Add a roadmap and implementation plan for rolling near-term forecast reports

docs/config.md

@@ -130,7 +130,9 @@ name the variable only; they should not contain the token value.
 - `sources`: optional map of source-specific overrides, using the same policy values.
 
 Hourly forecast data is required for generated reports. Optional sources use
-the missing-source policy.
+the missing-source policy. Source override keys include `observations`,
+`current`, `narrative`, `alerts`, `discussion`, `weather_story`, and
+`spc_convective_outlooks`.
 
 ### `scriptorium`
 
@@ -197,10 +199,13 @@ reports:
       - metadata
       - current_conditions
       - narrative_forecast
+      - alert_digest
+      - spc_convective_outlooks
       - id: area_forecast_discussion
         options:
           sections:
             - short_term
+      - spc_convective_discussion
       - hourly_forecast
 ```
 

docs/integrations/weatherapi.md

@@ -37,6 +37,10 @@ generation.
 means the endpoint was checked and there are no current active alerts. The
 adapter records a non-missing alerts source and an empty alert run.
 
+For `/outlooks/convective`, `data: null` means no latest run is available and
+follows missing-source policy. A non-null run with empty `outlooks` and
+`discussions` arrays is checked empty data, not a missing source.
+
 Malformed JSON envelopes, non-2xx statuses, and response read failures include
 endpoint context in returned errors. Decode errors include source context when
 they fail the fetch; optional malformed sources follow the missing-source policy.
@@ -49,11 +53,66 @@ The adapter sends these query parameters:
 - `units`: from `weather_api.units`
 - `precision`: from `weather_api.precision` on observations, current
   conditions, hourly forecast, and narrative forecast requests
-- `tz`: from `weather_api.timezone` on hourly forecast, narrative forecast, and
-  discussion requests
+- `tz`: from `weather_api.timezone` on hourly forecast, narrative forecast,
+  discussion, and SPC convective outlook requests
 
 Alerts do not receive `precision` or `tz`. Weather story requests receive only
-`format=json`.
+`format=json`. SPC convective outlook requests receive only `format=json` and
+`tz`; they do not receive `units` or `precision`.
+
+## SPC Convective Outlooks
+
+The adapter fetches SPC convective outlook data from:
+
+```text
+GET /outlooks/convective?format=json&tz=<weather_api.timezone>
+```
+
+The response uses the standard `data` envelope. `data: null` means no latest
+run is available and follows missing-source policy. A non-null object with
+empty `outlooks` and `discussions` arrays is accepted as checked empty data.
+
+Run fields consumed by weatherreporter:
+
+- `locationId`
+- `locationName`
+- `asOf`
+- `issuedAt`
+- `updatedAt`
+- `product`
+- `outlooks`
+- `discussions`
+
+Outlook fields consumed:
+
+- `id`
+- `provider`
+- `product`
+- `day`
+- `outlookType`
+- `label`
+- `labelText`
+- `forecaster`
+- `severityRank`
+- `validFrom`
+- `validTo`
+- `issuedAt`
+- `expiresAt`
+- `sourceUrl`
+- `imageUrl`
+- `containsLocation`
+- `geometry`
+
+Discussion fields consumed:
+
+- `day`
+- `headline`
+- `summary`
+- `discussion`
+- `updatedAt`
+
+GeoJSON `geometry` is decoded into collected weather facts and persisted in
+bundle/debug artifacts, but prompt-facing SPC module output omits geometry.
 
 ## Endpoints Used
 
@@ -66,6 +125,7 @@ The adapter fetches these endpoints once per bundle:
 - `/alerts/active`
 - `/discussion`
 - `/weatherstories/latest`
+- `/outlooks/convective`
 
 `weatherreporter` does not call day-slice forecast endpoints or discussion
 subsection endpoints. Report-period selection and daypart summarization happen
@@ -88,6 +148,7 @@ source-specific `missing_source.sources` policy:
 - `alerts` for `/alerts/active`
 - `discussion` for `/discussion`
 - `weather_story` for `/weatherstories/latest`
+- `spc_convective_outlooks` for `/outlooks/convective`
 
 Policy behavior:
 
@@ -99,6 +160,9 @@ For `/alerts/active`, an HTTP error or missing `data` field still fails or
 follows the relevant error path, but explicit `data: null` is not a
 missing-source condition.
 
+For `/outlooks/convective`, a non-null data object with empty outlook and
+discussion arrays is accepted as checked empty data.
+
 ## Source Identity
 
 For source payloads accepted into the bundle, including the explicit `null`
@@ -116,8 +180,8 @@ warnings list.
 
 ## Compatibility Assumptions
 
-The adapter expects payload fields compatible with the internal forecast bundle
-types in `internal/forecast/bundle.go`, including:
+The adapter expects payload fields compatible with the internal weather data
+bundle types in `internal/weatherdata/bundle.go`, including:
 
 - observation timestamps and observation values
 - current condition values
@@ -126,6 +190,8 @@ types in `internal/forecast/bundle.go`, including:
 - discussion metadata, key messages, and short/long-term section text
 - latest weather story title, description, timing, priority, order, alt text,
   and download URL
+- SPC convective outlook run metadata, outlooks, discussions, and GeoJSON
+  geometry
 
 The adapter intentionally keeps upstream transport and envelope details inside
 `internal/adapters/weatherapi`; downstream packages consume the normalized

docs/internal/briefing.md

@@ -28,7 +28,9 @@ Outputs:
   supported reports, fact requirements, missing-data behavior, and builder
 - `module.Output` values for source-oriented stanzas:
   `metadata`, `current_conditions`, `narrative_forecast`, `hourly_forecast`,
-  `alert_digest`, `area_forecast_discussion`, and `weather_story`
+  `alert_digest`, `spc_convective_outlooks`,
+  `area_forecast_discussion`, `spc_convective_discussion`, and
+  `weather_story`
 - `module.Output` values for derived stanzas:
   `derived_daily_summary`, `derived_daypart_summaries`, `precip_timing`,
   `outdoor_windows`, and `tomorrow_planning`
@@ -59,6 +61,22 @@ builders run. Configured `location` values are prompt context only; Weather API
 `area_forecast_discussion` uses optional `sections` configuration to include a
 subset of discussion fields.
 
+`spc_convective_outlooks` uses collected SPC run metadata and derived
+report-period outlooks. It emits `checked: true` for a successfully fetched
+empty run, reports `outlook_count`, and includes prompt-facing outlook fields
+such as risk label, `period_begins`, `period_ends`, image URL, and whether the
+outlook contains the configured location. It does not emit GeoJSON geometry,
+source URL, expiration time, or severity rank.
+
+Prompt-facing module intervals use friendly local `period_begins` and
+`period_ends` labels. Canonical report metadata, source provenance,
+`issued_at`, `updated_at`, and point-in-time fields remain separate.
+
+`spc_convective_discussion` uses the same derived report-period outlooks and
+discussion records. It is omitted unless at least one retained categorical
+outlook for the same SPC day has severity rank `3` or higher and matching
+discussion text exists.
+
 ## External Adapters Used
 
 None directly.
@@ -86,6 +104,11 @@ return an error for invalid required inputs.
   forecast discussion, and weather story stanzas.
 - Alert digest output distinguishes checked empty alert data from missing alert
   source data.
+- SPC convective outlook output distinguishes checked empty outlook data from
+  missing outlook source data and omits GeoJSON geometry from prompt-facing
+  fields.
+- SPC convective discussion output is omitted unless a retained outlook has
+  severity rank `3` or higher and matching discussion text is available.
 
 ## Tests
 

docs/internal/facts.md

@@ -20,14 +20,23 @@ Inputs:
 Outputs:
 
 - `facts.CollectedFacts` with normalized source facts plus separate source
-  provenance and warnings
+  provenance and warnings. SPC convective outlook source data is carried
+  through when present in the bundle, including upstream geometry and source
+  provenance.
 - `facts.DerivedFacts` with valid-period forecast slices, alert overlaps,
-  daily summaries, daypart summaries, and Storm Report window summary
+  report-period SPC convective outlooks and discussions, daily summaries,
+  daypart summaries, and Storm Report window summary
 
 ## Boundaries
 
 - This package owns fact assembly and reusable deterministic derivation for a
   report run.
+- SPC convective outlook derivation selects already-collected outlooks whose
+  half-open valid intervals overlap the resolved report period and retains
+  discussions for represented outlook days.
+- Derived SPC outlook records preserve the collected outlook fields, including
+  geometry, for downstream components that need source-level facts. Prompt
+  modules decide which fields are exposed to Scriptorium.
 - It does not fetch upstream data, build prompt wording, compare prior
   snapshots, write workflow state, invoke Scriptorium, or define modules.
 
@@ -55,6 +64,9 @@ and inspection.
   derivation error for reports that require daily summaries.
 - Missing optional narrative, alert, discussion, daily, or weather story data
   produces empty or nil derived fields.
+- Missing optional SPC convective outlook data produces a nil collected field.
+- A present SPC convective outlook source with no report-period matches
+  produces non-nil empty derived outlook and discussion slices.
 
 ## Tests
 
@@ -67,6 +79,8 @@ Inspect:
 
 - Collected facts are built once from a fetched bundle.
 - Derived facts are scoped to one resolved report.
+- SPC convective outlook selection uses the resolved report period and the
+  already-collected outlook run.
 - Source provenance and warnings stay separate from ordinary fact fields.
 - Prompt-specific wording and one-off presentation decisions stay outside this
   package.

docs/internal/module.md

@@ -37,7 +37,9 @@ The registry recognizes these IDs:
 - `derived_daypart_summaries`
 - `precip_timing`
 - `alert_digest`
+- `spc_convective_outlooks`
 - `area_forecast_discussion`
+- `spc_convective_discussion`
 - `weather_story`
 - `outdoor_windows`
 - `tomorrow_planning`
@@ -47,7 +49,9 @@ unknown or unimplemented module IDs fail validation instead of being skipped.
 
 ## Options
 
-Most modules use an empty options struct. `area_forecast_discussion` accepts:
+Most modules use an empty options struct, including
+`spc_convective_outlooks` and `spc_convective_discussion`.
+`area_forecast_discussion` accepts:
 
 ```yaml
 sections:
@@ -61,6 +65,31 @@ An omitted or empty `sections` list includes all available discussion sections.
 Invalid option shapes fail during config normalization or composition
 validation.
 
+## SPC Convective Module Outputs
+
+`spc_convective_outlooks` emits a prompt-facing risk-product stanza with:
+
+- `checked`
+- `as_of`
+- `issued_at`
+- `location_id`
+- `location_name`
+- `outlook_count`
+- `outlooks`
+
+Each outlook entry may include `day`, `outlook_type`, `label`, `label_text`,
+`period_begins`, `period_ends`, `issued_at`, `contains_location`, and
+`image_url`. It omits GeoJSON geometry, source URL, expiration time, and
+severity rank.
+
+`spc_convective_discussion` emits a narrative stanza only when a retained
+report-period categorical outlook has severity rank `3` or higher and matching
+discussion text is available. Its output includes `included_because` and
+`discussions`; each discussion may include `day`, `period_begins`,
+`period_ends`, `headline`, `summary`, `discussion`, and `updated_at`.
+Discussions are included only for SPC days whose retained categorical outlooks
+meet the severity threshold.
+
 ## Boundaries
 
 - This package owns module identifiers, config item envelopes, output

docs/internal/prompt-input.md

@@ -41,6 +41,7 @@ briefing:
   metadata: {}
   applicable_risk_products:
     alert_digest: {}
+    spc_convective_outlooks: {}
   derived_summaries:
     derived_daily_summary: {}
     derived_daypart_summaries: {}
@@ -49,6 +50,7 @@ briefing:
   narrative_products:
     narrative_forecast: {}
     area_forecast_discussion: {}
+    spc_convective_discussion: {}
     weather_story: {}
   raw_data:
     current_conditions: {}
@@ -62,13 +64,20 @@ weather module stanzas under prompt-facing categories. This grouping is a YAML
 presentation concern only: module snapshots remain flat, and loaded
 `promptinput.Package` values expose flat stanza names in `Briefing.Values`.
 Within each category, stanza order follows the module snapshot output order.
+Prompt-facing module intervals use local `period_begins` and `period_ends`
+labels; canonical report metadata and source timestamps remain structured
+timestamps where applicable.
 
 Current categories are:
 
 - `applicable_risk_products`: location-applicable alerts, warnings, outlooks,
-  discussions, and similar risk products.
+  and similar risk products. Current stanzas include `alert_digest` and
+  `spc_convective_outlooks`.
 - `derived_summaries`: deterministic summaries and calculated report facts.
 - `narrative_products`: official narrative text products and forecast stories.
+  Current stanzas include `narrative_forecast`,
+  `area_forecast_discussion`, `spc_convective_discussion`, and
+  `weather_story`.
 - `raw_data`: minimally transformed underlying weather data.
 
 ## Boundaries

docs/internal/weather-data.md

@@ -4,10 +4,10 @@ This document describes Weather API ingestion into `weatherdata.Bundle`.
 
 ## Purpose
 
-`internal/adapters/weatherapi` fetches normalized weather data from one
-configured Weather API endpoint and assembles the bundle consumed by forecast
-derivation and module builders. Module builders expose normalized current
-conditions and weather story context when those sources are available.
+`internal/adapters/weatherapi` fetches normalized weather data from the
+configured Weather API and assembles the bundle consumed by forecast derivation
+and module builders. Module builders expose normalized current conditions and
+weather story context when those sources are available.
 
 ## Inputs And Outputs
 
@@ -21,7 +21,8 @@ Outputs:
 
 - `weatherdata.Bundle` with observation, current conditions, hourly forecast,
   narrative forecast, active alerts, discussion, latest weather story, source
-  records, and source warnings
+  records, source warnings, and typed SPC convective outlook data when that
+  optional source is available
 - optional saved bundle JSON through app fetch helpers
 
 ## Boundaries
@@ -54,9 +55,19 @@ contract used by this project.
 The adapter records source name, endpoint, query, fetch time, source timestamps
 when available, SHA-256 hash over compact raw `data` JSON, missing status, and
 source warnings. Successful `data: null` responses from `/alerts/active`
-represent a checked empty active-alert list, not a missing source.
+represent a checked empty active-alert list, not a missing source. Successful
+non-null `/outlooks/convective` responses with empty outlook and discussion
+arrays represent checked empty outlook data.
 `app.FetchAndSaveBundle` can write bundle JSON atomically for inspection.
 
+SPC convective outlook data is stored on
+`weatherdata.Bundle.SPCConvectiveOutlooks`. The collected run keeps upstream
+run metadata, location identifiers, ordered outlook records, discussion
+records, and each outlook's raw GeoJSON geometry. Source provenance for this
+payload uses the `spc_convective_outlooks` source name, endpoint
+`/outlooks/convective`, the query sent by the adapter, timestamps, and a hash
+of the raw `data` object.
+
 ## Skip And Resume Behavior
 
 No resume behavior. Optional missing or malformed sources may be omitted,
@@ -72,6 +83,8 @@ data is required and cannot be skipped.
 - Optional sources follow missing-source policy.
 - Explicit `data: null` from `/alerts/active` produces an empty, non-missing
   alert run.
+- Explicit `data: null` from `/outlooks/convective` follows optional
+  missing-source policy.
 
 ## Tests
 

docs/roadmap/implementation.md

@@ -0,0 +1,498 @@
+# Near-Term Report Implementation Roadmap
+
+## Purpose
+
+This roadmap defines the concrete implementation sequence for
+`docs/roadmap/near-term.md`. It is written for an LLM coding agent that will
+implement each stage in order.
+
+This is a future-work roadmap. Until a stage is implemented, non-roadmap docs
+must not describe `near_term` behavior as available.
+
+## Source Feature Roadmap
+
+Use `docs/roadmap/near-term.md` as the authoritative feature roadmap for user
+intent, target behavior, and policy choices. This document is the implementation
+plan. If the target behavior changes, update `near-term.md` first, then update
+this roadmap.
+
+## Locked Implementation Decisions
+
+- Add report ID `near_term` and Go constant `report.NearTerm`.
+- Add CLI command `weatherreporter generate near-term`.
+- Do not add `--date`, `--start`, `--end`, or duration flags for this report.
+- Do not add `near_term` to morning or evening batches in the first
+  implementation.
+- Define the valid-period duration with a package-owned constant, initially
+  `6` hours.
+- Resolve the valid period as `[generation_time, generation_time + 6h)` in the
+  effective report timezone.
+- Use prompt ID `weather.near_term_report`.
+- Use artifact group `near-term` and batch output name `near-term.md`.
+- Add comparison strategy constant `CompareRollingWindow = "rolling_window"`.
+- Declare `CompatiblePriorIDs: []report.ID{report.NearTerm}`, but do not emit
+  Recent Changes for `near_term` in the first implementation.
+- Keep state prior lookup returning `nil` for rolling-window reports until a
+  future comparison algorithm is designed.
+- Default module order is:
+  1. `metadata`
+  2. `current_conditions`
+  3. `hourly_forecast`
+  4. `precip_timing`
+  5. `alert_digest`
+  6. `spc_convective_outlooks`
+  7. `area_forecast_discussion`
+  8. `spc_convective_discussion`
+  9. `weather_story`
+- Configure the near-term `area_forecast_discussion` module with only
+  `key_messages` and `short_term` sections.
+- Do not include daily/daypart modules in the default near-term composition.
+- Alert and SPC modules must use existing valid-period overlap behavior.
+- Preserve existing public behavior for all current report types.
+
+## Stage 1: Report Identity And Period Resolution
+
+Goal: add the `near_term` report definition, constants, registry entry, and
+rolling six-hour valid-period resolver.
+
+Files to inspect:
+
+- `internal/report/definition.go`
+- `internal/report/registry.go`
+- `internal/report/period.go`
+- `internal/report/daily_report.go`
+- `internal/report/period_test.go`
+- `internal/state/filesystem.go`
+
+Implementation:
+
+- Add `NearTerm ID = "near_term"` in `internal/report/definition.go`.
+- Add `CompareRollingWindow ComparisonStrategy = "rolling_window"`.
+- Add `internal/report/near_term_report.go`.
+- Define a package-local duration constant in that file, for example:
+
+  ```go
+  const nearTermHours = 6
+  ```
+
+- Add `nearTermDefinition()` returning:
+  - `ID: NearTerm`
+  - `Name: "Near-Term Report"`
+  - `PromptID: "weather.near_term_report"`
+  - `ComparisonStrategy: CompareRollingWindow`
+  - `ArtifactGroup: "near-term"`
+  - `BatchOutputName: "near-term.md"`
+  - `Generated: true`
+  - `CompatiblePriorIDs: []ID{NearTerm}`
+  - `Modules: nearTermModules()`
+  - no `Morning` or `Evening` membership
+  - `resolve: resolveNearTerm`
+- Implement `resolveNearTerm` as generation-time anchored:
+
+  ```go
+  localNow := req.Now.In(req.Location)
+  return timeutil.Period{
+      Start: localNow,
+      End:   localNow.Add(nearTermHours * time.Hour),
+  }, nil
+  ```
+
+- Add `nearTermDefinition()` to `DefaultRegistry()`.
+- Add `NearTerm` to `Registry.All()` in a stable order after
+  `DailyTomorrow` and before `ThreeDay`.
+- Do not change `BatchReports`.
+- Leave `state.FindPriorSnapshot` behavior unchanged for
+  `CompareRollingWindow`; it should return `nil` because it only supports
+  same-date and weekend lookup.
+
+Tests:
+
+- Add report period tests for:
+  - lookup succeeds for `NearTerm`;
+  - `Registry.All()` includes `NearTerm`;
+  - fixed generation time resolves to exactly six hours;
+  - timezone-aware start and end use the effective location;
+  - valid period is not civil-day truncated;
+  - metadata RunID includes `near_term`;
+  - batch membership remains unchanged.
+- Update registry metadata/path tests to include:
+  - artifact group `near-term`;
+  - batch output name `near-term.md`;
+  - generated `true`;
+  - compatible prior IDs `[]ID{NearTerm}`;
+  - comparison strategy `CompareRollingWindow`.
+
+Validation:
+
+```bash
+go test ./internal/report ./internal/state
+```
+
+This stage is small enough for one implementation prompt.
+
+## Stage 2: Module Compatibility And Default Composition
+
+Goal: make existing modules compatible with `near_term` where appropriate and
+declare the default module composition.
+
+Files to inspect:
+
+- `internal/report/near_term_report.go`
+- `internal/briefing/modules.go`
+- `internal/module/module.go`
+- `internal/briefing/modules_test.go`
+- `internal/briefing/base_modules_test.go`
+- `internal/briefing/derived_modules_test.go`
+
+Implementation:
+
+- Add `nearTermModules()` in `internal/report/near_term_report.go`.
+- Use explicit module items in this order:
+  - `module.Metadata`
+  - `module.CurrentConditions`
+  - `module.HourlyForecast`
+  - `module.PrecipTiming`
+  - `module.AlertDigest`
+  - `module.SPCConvectiveOutlooks`
+  - `module.AreaForecastDiscussion` with options:
+
+    ```go
+    module.AreaForecastDiscussionOptions{
+        Sections: []string{"key_messages", "short_term"},
+    }
+    ```
+
+  - `module.SPCConvectiveDiscussion`
+  - `module.WeatherStory`
+- Expand module `SupportedReports` in `internal/briefing/modules.go`:
+  - include `report.NearTerm` in `allReports`;
+  - include `report.NearTerm` for `HourlyForecast`;
+  - do not include `report.NearTerm` for `NarrativeForecast`;
+  - do not include `report.NearTerm` in `daypartReports`;
+  - do not include `report.NearTerm` for `DerivedDailySummary`,
+    `DerivedDaypartSummaries`, `OutdoorWindows`, or `TomorrowPlanning`.
+- Keep `PrecipTiming`, `AlertDigest`, `SPCConvectiveOutlooks`,
+  `AreaForecastDiscussion`, `SPCConvectiveDiscussion`, and `WeatherStory`
+  compatible through `allReports`.
+- Do not add a new module ID in this stage.
+
+Tests:
+
+- Add or update module registry tests proving:
+  - default near-term composition validates;
+  - all default near-term modules have builders;
+  - daily/daypart-only modules reject `report.NearTerm`;
+  - `HourlyForecast` builds for `report.NearTerm`;
+  - AFD options for the near-term default include only key messages and short
+    term.
+- Add a focused AFD module test that near-term options omit long term when the
+  source provides it.
+
+Validation:
+
+```bash
+go test ./internal/report ./internal/briefing ./internal/module
+```
+
+This stage is small enough for one implementation prompt.
+
+## Stage 3: Derived Facts For Rolling Windows
+
+Goal: teach `internal/facts` to build the facts needed by the near-term module
+set without requiring daily summaries or daypart summaries.
+
+Files to inspect:
+
+- `internal/facts/facts.go`
+- `internal/facts/facts_test.go`
+- `internal/forecast`
+- `internal/timeutil`
+- `internal/briefing/modules.go`
+
+Implementation:
+
+- Add `report.NearTerm` handling in `facts.BuildDerived`.
+- For near-term:
+  - populate `ValidPeriodHourlyPeriods` from the resolved six-hour valid
+    period;
+  - populate `ValidPeriodNarrativePeriods` if the existing generic selection
+    already does so, but do not require it for default near-term modules;
+  - build `PrecipTiming` from `ValidPeriodHourlyPeriods`;
+  - select alert overlaps using the near-term valid period;
+  - select SPC outlooks and discussions using the near-term valid period;
+  - do not build or require `DailySummaries`;
+  - do not build or require `DaypartSummaries`;
+  - do not build `StormWindowSummary`.
+- Preserve existing daily, tomorrow, three-day, weekend, and storm derivation.
+- If any existing helper assumes civil-day coverage, keep near-term on the
+  generic valid-period hourly path instead of reusing that helper.
+
+Tests:
+
+- Add facts tests for:
+  - valid-period hourly selection over a rolling six-hour window;
+  - precipitation timing based only on the near-term hourly slice;
+  - alert overlap inclusion/exclusion by near-term period;
+  - SPC outlook inclusion/exclusion by near-term period;
+  - SPC discussion records retained only for retained overlapping SPC days;
+  - no daily/daypart facts required.
+- Add a regression test that an unsupported future report still returns an
+  actionable derivation error.
+
+Validation:
+
+```bash
+go test ./internal/facts ./internal/forecast ./internal/timeutil
+```
+
+This stage is small enough for one implementation prompt.
+
+## Stage 4: App Report Mapping And CLI Command
+
+Goal: add explicit `generate near-term` support while preserving existing CLI
+syntax and app behavior.
+
+Files to inspect:
+
+- `internal/app/app.go`
+- `internal/app/app_test.go`
+- `internal/cli/root.go`
+- `internal/cli/root_test.go`
+- `cmd/weatherreporter/main.go`
+
+Implementation:
+
+- Add app report kind:
+
+  ```go
+  ReportNearTerm ReportKind = "near-term"
+  ```
+
+- Map `ReportNearTerm` to `report.NearTerm` in `reportIDForCommand`.
+- Add `near-term` to CLI generate report parsing.
+- Add help usage line:
+
+  ```text
+  weatherreporter generate near-term [--config PATH] [--units VALUE] [--tz NAME] [--out PATH]
+  ```
+
+- Reuse existing generate command flags:
+  - allow `--config`;
+  - allow `--units`;
+  - allow `--tz`;
+  - allow `--out`;
+  - do not allow or require `--date`;
+  - do not allow or require storm `--start` / `--end`.
+- Ensure the CLI returns an actionable error for unknown report names as today.
+- Do not change batch commands.
+
+Tests:
+
+- Add CLI parser tests for:
+  - `generate near-term`;
+  - `generate near-term --config PATH`;
+  - `generate near-term --units us --tz America/Chicago --out PATH`;
+  - rejected `generate near-term --date YYYY-MM-DD`;
+  - rejected storm-only `--start` / `--end` on near-term if current parser
+    behavior supports this distinction.
+- Add app resolution tests proving `ReportNearTerm` resolves `report.NearTerm`.
+- Update help tests to assert `generate near-term` appears.
+- Existing generate and run command tests must remain unchanged.
+
+Validation:
+
+```bash
+go test ./internal/app ./internal/cli
+go run ./cmd/weatherreporter --help
+```
+
+This stage is small enough for one implementation prompt.
+
+## Stage 5: End-To-End Generation And Artifact Behavior
+
+Goal: prove a near-term report can run through the app workflow and persist the
+expected artifacts.
+
+Files to inspect:
+
+- `internal/app/app_test.go`
+- `internal/state`
+- `internal/promptinput`
+- Weather API fixture server helpers in app tests
+- distributor notification tests if report paths are asserted
+
+Implementation:
+
+- Add an app-level test that generates `ReportNearTerm` with fixture weather
+  data and fake Scriptorium.
+- Assert:
+  - `ReportResult.Metadata.ReportID == report.NearTerm`;
+  - prompt ID is `weather.near_term_report`;
+  - managed report path uses artifact group `near-term`;
+  - data package path uses artifact group `near-term`;
+  - module snapshot contains the near-term module list in order;
+  - data package categories are unchanged;
+  - `hourly_forecast` contains only periods overlapping the six-hour window;
+  - `precip_timing` reflects only the six-hour window;
+  - `alert_digest` and SPC stanzas respect overlap behavior;
+  - AFD includes key messages and short term but not long term;
+  - `recent_changes.items` is empty when no rolling-window comparison exists.
+- Add an app-level case for distributor notification only if existing tests
+  assert report-specific path rendering. The expected distributor templates
+  should work through existing `{artifact_group}`, `{report_id}`,
+  `{valid_start_date}`, and `{valid_start_time}` values without special
+  near-term behavior.
+- Do not add `near_term` to scheduled batch tests.
+
+Tests:
+
+- Add stale-key checks if generated YAML is inspected:
+  - module intervals use `period_begins` / `period_ends`;
+  - top-level metadata keeps canonical `valid_period`.
+- Ensure optional output copy via `--out` continues to use existing app copy
+  behavior for generated reports.
+
+Validation:
+
+```bash
+go test ./internal/app ./internal/state ./internal/promptinput
+```
+
+This stage is small enough for one implementation prompt.
+
+## Stage 6: Config Overrides And Examples
+
+Goal: allow configured module overrides for `near_term` while keeping
+maintained examples valid.
+
+Files to inspect:
+
+- `internal/config/reports.go`
+- `internal/config/config_test.go`
+- `docs/config.md` after implementation
+- `examples/config.yml`
+
+Implementation:
+
+- Add report config key aliases:
+  - `near_term`
+  - `near-term`
+- Map both aliases to `report.NearTerm`.
+- Validate near-term module overrides through the existing module registry.
+- Ensure incompatible modules fail clearly, for example
+  `derived_daily_summary` should not be compatible with `near_term`.
+- Update config tests for:
+  - successful `reports.near_term.deterministic_modules`;
+  - successful `reports.near-term.deterministic_modules`;
+  - duplicate canonical near-term aliases rejected if both are present;
+  - incompatible daily-only module rejected.
+- Update `examples/config.yml` only if it enumerates all report module
+  overrides. If it does not need a near-term override, do not add one just to
+  demonstrate the feature.
+
+Validation:
+
+```bash
+go test ./internal/config ./internal/report ./internal/briefing
+```
+
+This stage is small enough for one implementation prompt.
+
+## Stage 7: Implemented Documentation
+
+Goal: update non-roadmap documentation after the feature exists.
+
+Files to inspect and update:
+
+- `docs/cli.md`
+- `docs/config.md`
+- `docs/operations.md`
+- `docs/internal/report-registry.md`
+- `docs/internal/module.md`
+- `docs/internal/facts.md`
+- `docs/internal/briefing.md`
+- `docs/internal/prompt-input.md`
+- `examples/config.yml`, only if changed in Stage 6
+
+Documentation requirements:
+
+- Describe `generate near-term` in CLI docs after implementation.
+- Document that the first version is explicit generation only and is not part
+  of scheduled batches.
+- Document the six-hour rolling valid period and that the duration is an
+  internal constant, not a config field.
+- Document near-term report identity, artifact group, batch output name, prompt
+  ID, and module composition in internal docs.
+- Document near-term config override keys only if Stage 6 implements them.
+- Keep deferred items under roadmap docs only:
+  - configurable duration;
+  - batch membership;
+  - dedicated `derived_near_term_summary`;
+  - near-term Recent Changes comparison output.
+
+Acceptance criteria:
+
+- Non-roadmap docs describe only implemented behavior.
+- Docs do not imply a duration config field or scheduled batch behavior.
+- Maintained examples load.
+
+Validation:
+
+```bash
+go test ./internal/config
+git diff --check
+```
+
+This stage is small enough for one implementation prompt.
+
+## Stage 8: Final Validation
+
+Goal: run the complete project validation after implementation and docs are
+updated.
+
+Commands:
+
+```bash
+go test ./...
+go run ./cmd/weatherreporter --help
+git diff --check
+```
+
+Manual checks:
+
+- `weatherreporter --help` lists `generate near-term`.
+- No existing command syntax changed.
+- `near_term` is absent from morning and evening batch membership.
+- No non-roadmap docs describe unimplemented deferred near-term work.
+- No config examples include secrets or invalid module IDs.
+- Distributor bundle path rendering remains template-driven and does not need
+  report-specific branching.
+
+This stage is small enough for one implementation prompt.
+
+## Deferred Work
+
+Do not include these in the first implementation:
+
+- user-configurable near-term duration;
+- scheduled near-term batch membership or a new high-frequency batch command;
+- dedicated `derived_near_term_summary`;
+- narrative forecast periods in the default near-term module list;
+- separate AFD section modules;
+- rolling-window Recent Changes comparison output;
+- custom CLI duration flags;
+- distributor-specific behavior for near-term reports.
+
+## Open Questions
+
+None block implementation.
+
+Recommendation: keep the first version explicit and narrow: `generate
+near-term`, six-hour constant, no batch membership, no Recent Changes output.
+This fits the existing registry/module architecture and lets prompt quality be
+tested before adding scheduler or comparison complexity.
+
+Viable alternative: implement rolling-window Recent Changes immediately by
+finding the most recent prior `near_term` report with an overlapping or adjacent
+window. That could be useful later, but it needs a well-defined comparison
+contract and should not block the first report implementation.

docs/roadmap/near-term.md

@@ -0,0 +1,363 @@
+# Near-Term Report Roadmap
+
+## Purpose
+
+This roadmap defines planned work to add a rolling `near_term` report focused
+on the next several hours. The feature is not implemented yet, so this document
+lives under `docs/roadmap/`.
+
+The goal is a frequently generated report that helps readers understand what
+matters in the immediate future: current conditions, hourly evolution,
+precipitation timing, applicable hazards, applicable SPC risk products, and the
+most relevant short-term narrative context.
+
+## Target Behavior
+
+Add a generated report with:
+
+- report ID: `near_term`
+- display name: `Near-Term Report`
+- prompt ID: `weather.near_term_report`
+- artifact group: `near-term`
+- batch output name: `near-term.md`
+- default valid-period length: 6 hours
+- valid period: `[generation_time, generation_time + nearTermHours)`
+
+The report should use a package-owned constant for the valid-period length, for
+example:
+
+```go
+const nearTermHours = 6
+```
+
+Do not make the duration configurable in the first implementation. The constant
+exists so the value can be changed later to 4 or 8 hours without changing
+valid-period logic in multiple places.
+
+## Locked Decisions
+
+- The report ID is `near_term`.
+- The report is rolling and generation-time anchored, not civil-day anchored.
+- The first implementation covers the next 6 hours through a constant.
+- The report should be generated explicitly by CLI command before deciding
+  whether it belongs in scheduled batches.
+- The first implementation should declare `rolling_window` comparison policy
+  but should not emit Recent Changes output for `near_term`.
+- Alert and SPC products should be included only when their valid periods
+  overlap the resolved near-term report period.
+- SPC discussion text should keep the existing categorical-risk threshold rule
+  and should still require overlap with the near-term report period.
+- The AFD stanza should include key messages and short term text by default.
+- Daily-only modules should not be forced into this report.
+
+## Report Definition
+
+Add a report definition under `internal/report`, preferably in a focused
+`near_term_report.go` file.
+
+Definition fields:
+
+- `ID`: `NearTerm`
+- `Name`: `Near-Term Report`
+- `PromptID`: `weather.near_term_report`
+- `ComparisonStrategy`: `rolling_window`
+- `ArtifactGroup`: `near-term`
+- `BatchOutputName`: `near-term.md`
+- `Generated`: `true`
+- `CompatiblePriorIDs`: `[]ID{NearTerm}`
+- `Modules`: near-term module list below
+- `resolve`: rolling near-term resolver
+
+Valid-period resolver:
+
+```go
+func resolveNearTerm(req ResolveRequest) (timeutil.Period, error) {
+    localNow := req.Now.In(req.Location)
+    return timeutil.Period{
+        Start: localNow,
+        End:   localNow.Add(nearTermHours * time.Hour),
+    }, nil
+}
+```
+
+The implementation should use idiomatic package-local constants and avoid
+duplicating duration literals in tests or app code.
+
+## Default Module Composition
+
+Default module order should be:
+
+1. `metadata`
+2. `current_conditions`
+3. `hourly_forecast`
+4. `precip_timing`
+5. `alert_digest`
+6. `spc_convective_outlooks`
+7. `area_forecast_discussion`
+8. `spc_convective_discussion`
+9. `weather_story`
+
+`area_forecast_discussion` should use options equivalent to:
+
+```yaml
+sections:
+  - key_messages
+  - short_term
+```
+
+Do not include these daily/daypart-oriented modules initially:
+
+- `derived_daily_summary`
+- `derived_daypart_summaries`
+- `outdoor_windows`
+- `tomorrow_planning`
+
+If the report needs deterministic summary facts later, add a purpose-built
+module such as `derived_near_term_summary` rather than stretching daily modules
+into a rolling sub-daily context.
+
+## Prompt Package Shape
+
+The existing prompt-input category layout should remain unchanged:
+
+- `applicable_risk_products`
+- `derived_summaries`
+- `narrative_products`
+- `raw_data`
+
+Near-term output is expected to emphasize:
+
+- `current_conditions` and `hourly_forecast` under `raw_data`
+- `precip_timing` under `derived_summaries`
+- `alert_digest` and `spc_convective_outlooks` under
+  `applicable_risk_products`
+- `area_forecast_discussion`, `spc_convective_discussion`, and
+  `weather_story` under `narrative_products`
+
+Module interval fields should use the existing prompt-facing
+`period_begins` / `period_ends` convention.
+
+## Overlap And Filtering Rules
+
+Hourly forecast:
+
+- use only hourly periods overlapping the near-term valid period;
+- preserve hourly period order;
+- do not include the full daily forecast.
+
+Narrative products:
+
+- AFD key messages and short term text may be included because the AFD is an
+  official short-term forecast discussion product;
+- narrative forecast periods are not included by default unless a later prompt
+  test shows they improve near-term output.
+
+Alerts:
+
+- include active alert overlaps only when the alert overlaps the near-term
+  valid period;
+- if alerts were checked successfully and no alerts overlap, emit checked empty
+  alert context through existing module behavior.
+
+SPC outlooks:
+
+- include only retained outlooks whose valid periods overlap the near-term
+  valid period;
+- do not include non-overlapping outlooks even if they are severe;
+- keep current prompt-facing field exclusions for geometry, severity rank,
+  expiration time, and source URL.
+
+SPC discussion:
+
+- include discussion only for SPC days where a retained overlapping categorical
+  outlook has severity rank at least `3`;
+- do not include discussion for low-risk, non-categorical-only, or
+  non-overlapping outlooks.
+
+Weather story:
+
+- include when available under current optional-source behavior;
+- do not require the story valid period to exactly match the near-term period
+  unless later testing shows stale stories are a problem.
+
+## Implementation Stages
+
+### Stage 1: Report Registry
+
+Goal: add the `near_term` report definition and valid-period resolver.
+
+Files to inspect or update:
+
+- `internal/report/definition.go`
+- `internal/report/registry.go`
+- `internal/report/period.go`
+- new `internal/report/near_term_report.go`
+- `internal/report/period_test.go`
+- `docs/internal/report-registry.md` after implementation
+
+Acceptance criteria:
+
+- `report.DefaultRegistry().Lookup(report.NearTerm)` succeeds.
+- `report.Registry.All()` includes the report in a stable order.
+- resolving the report at a fixed generation time produces a half-open
+  six-hour period.
+- report metadata and RunID include `near_term`.
+
+### Stage 2: Module Compatibility And Defaults
+
+Goal: allow existing relevant modules to build for `near_term` and define the
+default near-term composition.
+
+Files to inspect or update:
+
+- `internal/briefing/modules.go`
+- `internal/report/near_term_report.go`
+- `internal/briefing/*_module_test.go`
+- `internal/module/module_test.go`
+
+Acceptance criteria:
+
+- all default near-term modules validate and build from appropriate test facts;
+- daily-only modules remain incompatible unless intentionally expanded;
+- `area_forecast_discussion` defaults to key messages and short term only for
+  this report.
+
+### Stage 3: Derived Facts
+
+Goal: make `internal/facts` derive report-period facts for `near_term`.
+
+Files to inspect or update:
+
+- `internal/facts/facts.go`
+- `internal/facts/facts_test.go`
+- `internal/forecast` selection helpers, if needed
+
+Acceptance criteria:
+
+- valid-period hourly periods are sliced to the six-hour window;
+- precipitation timing is built from that six-hour hourly slice;
+- alert overlaps use the near-term valid period;
+- SPC outlook and discussion derivation use the near-term valid period;
+- no daily summaries or daypart summaries are required for the default
+  near-term module set.
+
+### Stage 4: CLI And App Wiring
+
+Goal: add explicit generation support without changing existing commands.
+
+Files to inspect or update:
+
+- `internal/app`
+- `internal/cli`
+- `cmd/weatherreporter/main.go`
+- `docs/cli.md` after implementation
+
+Expected command:
+
+```bash
+weatherreporter generate near-term [--config PATH] [--units VALUE] [--tz NAME] [--out PATH]
+```
+
+Acceptance criteria:
+
+- command maps to `report.NearTerm`;
+- no `--date`, `--start`, or `--end` flags are added for this report;
+- existing `generate daily`, `generate tomorrow`, `generate three-day`,
+  `generate weekend`, and `generate storm` behavior is unchanged;
+- CLI help lists the new command.
+
+### Stage 5: Prompt Input And State Coverage
+
+Goal: prove the managed module snapshot and data package contain the intended
+near-term stanzas.
+
+Files to inspect or update:
+
+- `internal/app/app_test.go`
+- `internal/promptinput`
+- `internal/state`
+
+Acceptance criteria:
+
+- generated module snapshot includes the near-term default module list in
+  order;
+- data package uses existing categories;
+- alert/SPC stanzas are omitted or checked-empty according to current module
+  behavior and valid-period overlap;
+- report metadata preserves canonical `valid_period`;
+- module interval labels use `period_begins` and `period_ends`.
+
+### Stage 6: Documentation And Examples
+
+Goal: document implemented behavior only after the code exists.
+
+Files to inspect or update after implementation:
+
+- `docs/cli.md`
+- `docs/internal/report-registry.md`
+- `docs/internal/module.md`
+- `docs/internal/facts.md`
+- `docs/internal/briefing.md`
+- `docs/config.md` only if report module overrides need an example update
+- `examples/config.yml` only if it lists report module overrides
+
+Acceptance criteria:
+
+- non-roadmap docs describe `near_term` only after implementation;
+- future or deferred near-term summary modules remain under roadmap docs;
+- examples, if updated, load through existing config tests.
+
+## Test Plan
+
+Focused tests:
+
+```bash
+go test ./internal/report ./internal/briefing ./internal/facts
+go test ./internal/app ./internal/cli ./internal/promptinput
+```
+
+Full validation:
+
+```bash
+go test ./...
+go run ./cmd/weatherreporter --help
+git diff --check
+```
+
+Important coverage:
+
+- six-hour valid-period resolution from a fixed generation time;
+- timezone-aware period start and end;
+- no civil-day truncation;
+- hourly periods selected by overlap with the rolling window;
+- alert overlap filtering;
+- SPC outlook filtering by overlap;
+- SPC discussion filtering by overlap plus categorical severity threshold;
+- AFD key messages and short term included;
+- daily-only modules rejected or absent from default near-term composition;
+- distributor bundle path templates render sensibly for a sub-daily report,
+  especially valid start time variables.
+
+## Deferred Work
+
+Do not include these in the first implementation:
+
+- user-configurable near-term duration;
+- adding `near_term` to scheduled morning or evening batches;
+- a dedicated `derived_near_term_summary` module;
+- narrative forecast periods by default;
+- separate AFD section modules;
+- near-term-specific Recent Changes comparison output;
+- CLI flags for custom near-term duration.
+
+## Open Questions
+
+None block the roadmap.
+
+Recommendation: implement the first version as explicit `generate near-term`
+only, with no scheduled batch membership. That keeps the user-visible behavior
+small while the prompt and generated report are tested.
+
+Viable alternative: add `near_term` to a frequent scheduled batch immediately.
+That may be useful operationally, but it should wait until the report cadence
+and downstream distributor behavior are clear.

examples/config.yml

@@ -21,7 +21,7 @@ notify:
     token_env: DISTRIBUTOR_UPLOAD_TOKEN
     timeout: 30s
     failure_policy: error
-    pipeline_id_template: "weatherreporter.{artifact_group}"
+    pipeline_id_template: "weatherreporter.{report_id}"
     bundle_id_template: "weatherreporter.{location_id}.{report_id}"
     idempotency_key_template: "{bundle_id}.{run_id}"
     report_path_templates:
@@ -77,6 +77,7 @@ reports:
       - derived_daypart_summaries
       - precip_timing
       - alert_digest
+      - spc_convective_outlooks
       - id: area_forecast_discussion
         options:
           sections:
@@ -84,6 +85,7 @@ reports:
             - key_messages
             - short_term
             - long_term
+      - spc_convective_discussion
       - weather_story
       - outdoor_windows
       - hourly_forecast

internal/adapters/weatherapi/client.go

@@ -21,6 +21,11 @@ import (
 	"gitea.maximumdirect.net/eric/weatherreporter/internal/weatherdata"
 )
 
+const (
+	convectiveOutlooksEndpoint  = "/outlooks/convective"
+	sourceSPCConvectiveOutlooks = "spc_convective_outlooks"
+)
+
 type Client struct {
 	baseURL       *url.URL
 	httpClient    *http.Client
@@ -112,6 +117,9 @@ func (c *Client) FetchBundle(ctx context.Context) (*weatherdata.Bundle, error) {
 	if err := builder.fetchWeatherStory(ctx); err != nil {
 		return nil, err
 	}
+	if err := builder.fetchSPCConvectiveOutlooks(ctx); err != nil {
+		return nil, err
+	}
 
 	return builder.bundle, nil
 }
@@ -264,6 +272,29 @@ func (b *bundleBuilder) fetchWeatherStory(ctx context.Context) error {
 	return nil
 }
 
+func (b *bundleBuilder) fetchSPCConvectiveOutlooks(ctx context.Context) error {
+	raw, source, err := b.client.fetch(ctx, sourceSPCConvectiveOutlooks, convectiveOutlooksEndpoint, queryOptions{timezone: true, omitUnits: true})
+	if err != nil {
+		return err
+	}
+	if raw == nil {
+		return b.handleMissing(&source, "SPC convective outlook data is missing", false)
+	}
+	var run weatherdata.ConvectiveOutlookRun
+	if err := decodeSource(raw, &run); err != nil {
+		return b.handleMalformed(&source, err, false)
+	}
+	if run.IssuedAt != nil {
+		source.IssuedAt = run.IssuedAt
+	} else {
+		source.IssuedAt = run.AsOf
+	}
+	source.UpdatedAt = run.UpdatedAt
+	b.bundle.SPCConvectiveOutlooks = &run
+	b.addSource(source)
+	return nil
+}
+
 func (b *bundleBuilder) handleMissing(source *weatherdata.Source, message string, required bool) error {
 	source.Missing = true
 	if required {

internal/adapters/weatherapi/client_test.go

@@ -55,8 +55,17 @@ func TestFetchBundleFromFixtures(t *testing.T) {
 	if bundle.WeatherStory.UpdatedAt == nil {
 		t.Fatalf("WeatherStory.UpdatedAt = nil, want update timestamp")
 	}
-	if len(bundle.Sources) != 7 {
-		t.Fatalf("Sources length = %d, want 7", len(bundle.Sources))
+	if bundle.SPCConvectiveOutlooks == nil || len(bundle.SPCConvectiveOutlooks.Outlooks) != 1 {
+		t.Fatalf("SPCConvectiveOutlooks = %#v, want one outlook", bundle.SPCConvectiveOutlooks)
+	}
+	if len(bundle.SPCConvectiveOutlooks.Outlooks[0].Geometry) == 0 {
+		t.Fatalf("SPCConvectiveOutlooks.Outlooks[0].Geometry is empty, want GeoJSON")
+	}
+	if len(bundle.SPCConvectiveOutlooks.Discussions) != 1 || bundle.SPCConvectiveOutlooks.Discussions[0].Headline != "Severe storms possible" {
+		t.Fatalf("SPCConvectiveOutlooks.Discussions = %#v, want one discussion", bundle.SPCConvectiveOutlooks.Discussions)
+	}
+	if len(bundle.Sources) != 8 {
+		t.Fatalf("Sources length = %d, want 8", len(bundle.Sources))
 	}
 	if len(bundle.Warnings) != 0 {
 		t.Fatalf("Warnings length = %d, want no warnings", len(bundle.Warnings))
@@ -70,6 +79,9 @@ func TestFetchBundleFromFixtures(t *testing.T) {
 	if !containsPath(requested, "/weatherstories/latest") {
 		t.Fatalf("requested paths = %v, want weather story endpoint", requested)
 	}
+	if !containsPath(requested, convectiveOutlooksEndpoint) {
+		t.Fatalf("requested paths = %v, want convective outlook endpoint", requested)
+	}
 }
 
 func TestFetchBundleBuildsExpectedQueries(t *testing.T) {
@@ -92,6 +104,12 @@ func TestFetchBundleBuildsExpectedQueries(t *testing.T) {
 			}
 			continue
 		}
+		if strings.HasPrefix(rawURL, convectiveOutlooksEndpoint) {
+			if strings.Contains(rawURL, "units=") || strings.Contains(rawURL, "precision=") || !strings.Contains(rawURL, "tz=America%2FChicago") {
+				t.Fatalf("convective outlook request %q should use format and tz only", rawURL)
+			}
+			continue
+		}
 		if !strings.Contains(rawURL, "units=us") {
 			t.Fatalf("request %q missing units=us", rawURL)
 		}
@@ -127,6 +145,25 @@ func TestFetchBundleRecordsSourceHash(t *testing.T) {
 	if story.IssuedAt == nil || story.UpdatedAt == nil {
 		t.Fatalf("weather story source timestamps = issued %#v updated %#v, want both", story.IssuedAt, story.UpdatedAt)
 	}
+	outlooks := sourceByName(t, bundle.Sources, sourceSPCConvectiveOutlooks)
+	if outlooks.Endpoint != convectiveOutlooksEndpoint {
+		t.Fatalf("convective outlook endpoint = %q, want %s", outlooks.Endpoint, convectiveOutlooksEndpoint)
+	}
+	if outlooks.Query["format"] != "json" || outlooks.Query["tz"] != "America/Chicago" || outlooks.Query["units"] != "" || outlooks.Query["precision"] != "" {
+		t.Fatalf("convective outlook query = %#v, want format and tz only", outlooks.Query)
+	}
+	if outlooks.DataSHA256 != hashFixtureData(t, "convective_outlooks.json") {
+		t.Fatalf("convective outlook DataSHA256 = %q, want fixture hash", outlooks.DataSHA256)
+	}
+	if outlooks.Missing {
+		t.Fatal("convective outlook source Missing = true, want false")
+	}
+	if outlooks.IssuedAt == nil || outlooks.IssuedAt.Format(time.RFC3339) != "2026-05-29T15:45:00Z" {
+		t.Fatalf("convective outlook IssuedAt = %#v, want run issuedAt", outlooks.IssuedAt)
+	}
+	if outlooks.UpdatedAt == nil || outlooks.UpdatedAt.Format(time.RFC3339) != "2026-05-29T16:05:00Z" {
+		t.Fatalf("convective outlook UpdatedAt = %#v, want run updatedAt", outlooks.UpdatedAt)
+	}
 }
 
 func TestHTTPErrorIsActionable(t *testing.T) {
@@ -189,6 +226,59 @@ func TestNullAlertsMeansNoActiveAlerts(t *testing.T) {
 	}
 }
 
+func TestMissingSPCConvectiveOutlooksUsesPolicy(t *testing.T) {
+	server := fixtureServer(t, map[string]handlerOverride{
+		convectiveOutlooksEndpoint: {status: http.StatusOK, body: `{"data": null}`},
+	}, nil)
+	client := newTestClient(t, server.URL+"/", map[string]config.MissingSourcePolicy{
+		sourceSPCConvectiveOutlooks: config.MissingSourceWarn,
+	})
+
+	bundle, err := client.FetchBundle(context.Background())
+	if err != nil {
+		t.Fatalf("FetchBundle() error = %v", err)
+	}
+	if bundle.SPCConvectiveOutlooks != nil {
+		t.Fatalf("SPCConvectiveOutlooks = %#v, want nil for missing source", bundle.SPCConvectiveOutlooks)
+	}
+	source := sourceByName(t, bundle.Sources, sourceSPCConvectiveOutlooks)
+	if !source.Missing || len(source.Warnings) != 1 {
+		t.Fatalf("convective outlook source = %#v, want missing source warning", source)
+	}
+}
+
+func TestEmptySPCConvectiveOutlooksAreCheckedData(t *testing.T) {
+	server := fixtureServer(t, map[string]handlerOverride{
+		convectiveOutlooksEndpoint: {status: http.StatusOK, body: `{"data":{"asOf":"2026-05-29T16:00:00Z","outlooks":[],"discussions":[]}}`},
+	}, nil)
+	client := newTestClient(t, server.URL+"/", map[string]config.MissingSourcePolicy{
+		sourceSPCConvectiveOutlooks: config.MissingSourceWarn,
+	})
+
+	bundle, err := client.FetchBundle(context.Background())
+	if err != nil {
+		t.Fatalf("FetchBundle() error = %v", err)
+	}
+	if bundle.SPCConvectiveOutlooks == nil {
+		t.Fatal("SPCConvectiveOutlooks = nil, want checked empty run")
+	}
+	if len(bundle.SPCConvectiveOutlooks.Outlooks) != 0 || len(bundle.SPCConvectiveOutlooks.Discussions) != 0 {
+		t.Fatalf("SPCConvectiveOutlooks = %#v, want empty arrays", bundle.SPCConvectiveOutlooks)
+	}
+	source := sourceByName(t, bundle.Sources, sourceSPCConvectiveOutlooks)
+	if source.Missing || len(source.Warnings) != 0 {
+		t.Fatalf("convective outlook source = %#v, want non-missing source without warnings", source)
+	}
+	if source.IssuedAt == nil || source.IssuedAt.Format(time.RFC3339) != "2026-05-29T16:00:00Z" {
+		t.Fatalf("convective outlook IssuedAt = %#v, want fallback to asOf", source.IssuedAt)
+	}
+	for _, warning := range bundle.Warnings {
+		if warning.Source == sourceSPCConvectiveOutlooks {
+			t.Fatalf("warnings = %#v, want no convective outlook warning", bundle.Warnings)
+		}
+	}
+}
+
 func TestMissingSourcePolicyWarnNoneError(t *testing.T) {
 	tests := []struct {
 		name       string
@@ -363,13 +453,14 @@ type handlerOverride struct {
 func fixtureServer(t *testing.T, overrides map[string]handlerOverride, requested *[]string) *httptest.Server {
 	t.Helper()
 	fixtures := map[string]string{
-		"/observations":          "observations.json",
-		"/conditions/current":    "current.json",
-		"/forecast/hourly":       "hourly.json",
-		"/forecast/narrative":    "narrative.json",
-		"/alerts/active":         "alerts.json",
-		"/discussion":            "discussion.json",
-		"/weatherstories/latest": "weather_story.json",
+		"/observations":            "observations.json",
+		"/conditions/current":      "current.json",
+		"/forecast/hourly":         "hourly.json",
+		"/forecast/narrative":      "narrative.json",
+		"/alerts/active":           "alerts.json",
+		"/discussion":              "discussion.json",
+		"/weatherstories/latest":   "weather_story.json",
+		convectiveOutlooksEndpoint: "convective_outlooks.json",
 	}
 	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		if requested != nil {

internal/adapters/weatherapi/testdata/convective_outlooks.json

@@ -0,0 +1,50 @@
+{
+  "data": {
+    "locationId": "nws-lsx-grid-90-74",
+    "locationName": "St. Louis, MO",
+    "asOf": "2026-05-29T16:00:00Z",
+    "issuedAt": "2026-05-29T15:45:00Z",
+    "updatedAt": "2026-05-29T16:05:00Z",
+    "product": "convective_outlook",
+    "outlooks": [
+      {
+        "id": "day1-categorical-slight",
+        "provider": "spc",
+        "product": "convective_outlook",
+        "day": 1,
+        "outlookType": "categorical",
+        "label": "SLGT",
+        "labelText": "Slight Risk",
+        "forecaster": "Smith",
+        "severityRank": 3,
+        "validFrom": "2026-05-29T13:00:00-05:00",
+        "validTo": "2026-05-30T07:00:00-05:00",
+        "issuedAt": "2026-05-29T15:45:00Z",
+        "expiresAt": "2026-05-30T07:00:00-05:00",
+        "sourceUrl": "https://www.spc.noaa.gov/products/outlook/day1otlk.html",
+        "imageUrl": "https://www.spc.noaa.gov/products/outlook/day1probotlk_2000_torn.gif",
+        "containsLocation": true,
+        "geometry": {
+          "type": "Polygon",
+          "coordinates": [
+            [
+              [-91.0, 38.0],
+              [-90.0, 38.5],
+              [-89.5, 37.8],
+              [-91.0, 38.0]
+            ]
+          ]
+        }
+      }
+    ],
+    "discussions": [
+      {
+        "day": 1,
+        "headline": "Severe storms possible",
+        "summary": "Scattered severe storms are possible.",
+        "discussion": "A few storms may become severe during the afternoon.",
+        "updatedAt": "2026-05-29T16:05:00Z"
+      }
+    ]
+  }
+}

internal/app/app_test.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"encoding/json"
 	"errors"
+	"fmt"
 	"net/http"
 	"net/http/httptest"
 	"os"
@@ -39,6 +40,8 @@ func TestFetchAndSaveBundle(t *testing.T) {
 			_, _ = w.Write([]byte(`{"data":{"product":"discussion","issuedAt":"2026-05-29T09:25:00-05:00","keyMessages":[],"shortTerm":{"qualifier":"(Short Term)","text":"Short-term AFD narrative for saved bundle."},"longTerm":{"qualifier":"(Long Term)","text":"Long-term AFD narrative for saved bundle."}}}`))
 		case "/weatherstories/latest":
 			_, _ = w.Write([]byte(`{"data":{"officeId":"LSX","startTime":"2026-05-30T08:46:00Z","endTime":"2026-05-31T11:00:00Z","updatedAt":"2026-05-30T09:00:34Z","title":"Several Chances for Rain Through Monday","description":"Scattered showers and thunderstorms remain possible.","altText":"Forecast weather story graphic.","priority":false,"order":1,"downloadUrl":"https://api.weather.gov/offices/LSX/weatherstories/download/test"}}`))
+		case "/outlooks/convective":
+			_, _ = w.Write([]byte(`{"data":{"asOf":"2026-05-29T16:00:00Z","outlooks":[],"discussions":[]}}`))
 		default:
 			http.NotFound(w, r)
 		}
@@ -167,9 +170,13 @@ func TestGenerateReportWritesReportAndPreflight(t *testing.T) {
 		!strings.Contains(string(data), "current_conditions:") ||
 		!strings.Contains(string(data), "narrative_forecast:") ||
 		!strings.Contains(string(data), "hourly_forecast:") ||
-		!strings.Contains(string(data), "area_forecast_discussion:") {
+		!strings.Contains(string(data), "area_forecast_discussion:") ||
+		!strings.Contains(string(data), "spc_convective_outlooks:") {
 		t.Fatalf("data package missing expected content:\n%s", string(data))
 	}
+	if strings.Contains(string(data), "spc_convective_discussion:") {
+		t.Fatalf("data package has SPC convective discussion, want omitted for empty checked source:\n%s", string(data))
+	}
 	if strings.Contains(string(data), "source_warnings:") {
 		t.Fatalf("data package has source warnings, want none for complete fetched sources:\n%s", string(data))
 	}
@@ -182,9 +189,10 @@ func TestGenerateReportWritesReportAndPreflight(t *testing.T) {
 	storyIndex := strings.Index(string(data), "    weather_story:")
 	currentIndex := strings.Index(string(data), "    current_conditions:")
 	hourlyIndex := strings.Index(string(data), "    hourly_forecast:")
-	if riskIndex < 0 || derivedIndex < 0 || narrativeIndex < 0 || rawIndex < 0 || alertIndex < 0 || summaryIndex < 0 || storyIndex < 0 || currentIndex < 0 || hourlyIndex < 0 ||
+	outlookIndex := strings.Index(string(data), "    spc_convective_outlooks:")
+	if riskIndex < 0 || derivedIndex < 0 || narrativeIndex < 0 || rawIndex < 0 || alertIndex < 0 || outlookIndex < 0 || summaryIndex < 0 || storyIndex < 0 || currentIndex < 0 || hourlyIndex < 0 ||
 		!(riskIndex < derivedIndex && derivedIndex < narrativeIndex && narrativeIndex < rawIndex) ||
-		!(riskIndex < alertIndex && derivedIndex < summaryIndex && narrativeIndex < storyIndex && rawIndex < currentIndex && currentIndex < hourlyIndex) {
+		!(riskIndex < alertIndex && alertIndex < outlookIndex && outlookIndex < derivedIndex && derivedIndex < summaryIndex && narrativeIndex < storyIndex && rawIndex < currentIndex && currentIndex < hourlyIndex) {
 		t.Fatalf("data package grouping is wrong, want categorized prompt stanzas:\n%s", string(data))
 	}
 	savedDataPackage, err := promptinput.LoadYAML(data)
@@ -197,6 +205,11 @@ func TestGenerateReportWritesReportAndPreflight(t *testing.T) {
 	if _, ok := savedDataPackage.Briefing.Values["metadata"]; !ok {
 		t.Fatal("data package metadata stanza missing")
 	}
+	assertNoStaleModuleIntervalKeys(t, savedDataPackage.Briefing.Values)
+	spcOutlooks, ok := savedDataPackage.Briefing.Values["spc_convective_outlooks"].(map[string]any)
+	if !ok || spcOutlooks["checked"] != true || spcOutlooks["outlook_count"] != 0 {
+		t.Fatalf("data package SPC convective outlooks = %#v, want checked empty source", savedDataPackage.Briefing.Values["spc_convective_outlooks"])
+	}
 	current, ok := savedDataPackage.Briefing.Values["current_conditions"].(map[string]any)
 	if !ok || current["condition_text"] != "Clear" {
 		t.Fatalf("data package current conditions = %#v, want current conditions", savedDataPackage.Briefing.Values["current_conditions"])
@@ -244,6 +257,98 @@ func TestGenerateReportWritesReportAndPreflight(t *testing.T) {
 	}
 }
 
+func TestGenerateReportIncludesSPCConvectivePromptStanzas(t *testing.T) {
+	server := dailyBundleServerWithConvectiveResponse(t, qualifyingConvectiveOutlooksResponse)
+	cfg := dailyTestConfig(t, server)
+
+	result := generateDailyReportForTest(t, cfg)
+	if _, ok := result.ModuleSnapshot.LookupStanza("spc_convective_outlooks"); !ok {
+		t.Fatal("module snapshot missing spc_convective_outlooks stanza")
+	}
+	if _, ok := result.ModuleSnapshot.LookupStanza("spc_convective_discussion"); !ok {
+		t.Fatal("module snapshot missing spc_convective_discussion stanza")
+	}
+	data := readDataPackageForTest(t, result)
+	text := string(data)
+	if strings.Contains(text, "geometry:") || strings.Contains(text, "coordinates:") || strings.Contains(text, "Polygon") {
+		t.Fatalf("data package contains geometry, want prompt-facing fields only:\n%s", text)
+	}
+	for _, want := range []string{
+		"    spc_convective_outlooks:",
+		"    spc_convective_discussion:",
+		"      included_because: categorical severity_rank >= 3",
+		"          label_text: Slight Risk",
+		"          period_begins:",
+		"          period_ends:",
+		"          discussion: Severe thunderstorms may produce damaging winds during the afternoon.",
+	} {
+		if !strings.Contains(text, want) {
+			t.Fatalf("data package missing %q:\n%s", want, text)
+		}
+	}
+	for _, omitted := range []string{"          severity_rank:", "          expires_at:", "          source_url:"} {
+		if strings.Contains(text, omitted) {
+			t.Fatalf("data package contains %q, want SPC prompt schema without it:\n%s", omitted, text)
+		}
+	}
+
+	riskIndex := strings.Index(text, "  applicable_risk_products:")
+	alertIndex := strings.Index(text, "    alert_digest:")
+	outlookIndex := strings.Index(text, "    spc_convective_outlooks:")
+	derivedIndex := strings.Index(text, "  derived_summaries:")
+	narrativeIndex := strings.Index(text, "  narrative_products:")
+	forecastIndex := strings.Index(text, "    narrative_forecast:")
+	afdIndex := strings.Index(text, "    area_forecast_discussion:")
+	discussionIndex := strings.Index(text, "    spc_convective_discussion:")
+	storyIndex := strings.Index(text, "    weather_story:")
+	rawIndex := strings.Index(text, "  raw_data:")
+	if riskIndex < 0 || alertIndex < 0 || outlookIndex < 0 || derivedIndex < 0 || narrativeIndex < 0 || forecastIndex < 0 || afdIndex < 0 || discussionIndex < 0 || storyIndex < 0 || rawIndex < 0 ||
+		!(riskIndex < alertIndex && alertIndex < outlookIndex && outlookIndex < derivedIndex) ||
+		!(narrativeIndex < forecastIndex && forecastIndex < afdIndex && afdIndex < discussionIndex && discussionIndex < storyIndex && storyIndex < rawIndex) {
+		t.Fatalf("data package category order is wrong:\n%s", text)
+	}
+
+	loaded, err := promptinput.LoadYAML(data)
+	if err != nil {
+		t.Fatalf("LoadYAML() error = %v", err)
+	}
+	assertNoStaleModuleIntervalKeys(t, loaded.Briefing.Values)
+	if _, ok := loaded.Briefing.Values["spc_convective_outlooks"]; !ok {
+		t.Fatal("loaded package missing spc_convective_outlooks stanza")
+	}
+	if _, ok := loaded.Briefing.Values["spc_convective_discussion"]; !ok {
+		t.Fatal("loaded package missing spc_convective_discussion stanza")
+	}
+}
+
+func TestGenerateReportOmitsSPCConvectiveDiscussionBelowThreshold(t *testing.T) {
+	server := dailyBundleServerWithConvectiveResponse(t, lowerRiskConvectiveOutlooksResponse)
+	cfg := dailyTestConfig(t, server)
+
+	result := generateDailyReportForTest(t, cfg)
+	if _, ok := result.ModuleSnapshot.LookupStanza("spc_convective_outlooks"); !ok {
+		t.Fatal("module snapshot missing spc_convective_outlooks stanza")
+	}
+	if _, ok := result.ModuleSnapshot.LookupStanza("spc_convective_discussion"); ok {
+		t.Fatal("module snapshot has spc_convective_discussion stanza, want omitted below threshold")
+	}
+	text := string(readDataPackageForTest(t, result))
+	if !strings.Contains(text, "    spc_convective_outlooks:") || !strings.Contains(text, "          label_text: Marginal Risk") {
+		t.Fatalf("data package missing lower-risk SPC outlook:\n%s", text)
+	}
+	for _, omitted := range []string{"          severity_rank:", "          expires_at:", "          source_url:"} {
+		if strings.Contains(text, omitted) {
+			t.Fatalf("data package contains %q, want SPC prompt schema without it:\n%s", omitted, text)
+		}
+	}
+	if strings.Contains(text, "spc_convective_discussion:") || strings.Contains(text, "Low-end severe threat discussion.") {
+		t.Fatalf("data package has SPC convective discussion, want omitted below threshold:\n%s", text)
+	}
+	if strings.Contains(text, "geometry:") || strings.Contains(text, "coordinates:") || strings.Contains(text, "Polygon") {
+		t.Fatalf("data package contains geometry, want prompt-facing fields only:\n%s", text)
+	}
+}
+
 func TestGenerateReportDisabledNotificationDoesNotCallNotifier(t *testing.T) {
 	server := dailyBundleServer(t)
 	cfg := dailyTestConfig(t, server)
@@ -1117,6 +1222,11 @@ func moduleIDsForTest(ids []module.ID) []string {
 }
 
 func dailyBundleServer(t *testing.T) *httptest.Server {
+	t.Helper()
+	return dailyBundleServerWithConvectiveResponse(t, emptyConvectiveOutlooksResponse)
+}
+
+func dailyBundleServerWithConvectiveResponse(t *testing.T, convectiveResponse string) *httptest.Server {
 	t.Helper()
 	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		switch r.URL.Path {
@@ -1134,6 +1244,8 @@ func dailyBundleServer(t *testing.T) *httptest.Server {
 			_, _ = w.Write([]byte(`{"data":{"product":"discussion","issuedAt":"2026-05-29T09:25:00-05:00","keyMessages":["Storms are most likely during the morning."],"shortTerm":{"qualifier":"(Short Term)","text":"Short-term AFD narrative for generated report."},"longTerm":{"qualifier":"(Long Term)","text":"Long-term AFD narrative for generated report."}}}`))
 		case "/weatherstories/latest":
 			_, _ = w.Write([]byte(`{"data":{"officeId":"LSX","startTime":"2026-05-30T08:46:00Z","endTime":"2026-05-31T11:00:00Z","updatedAt":"2026-05-30T09:00:34Z","title":"Several Chances for Rain Through Monday","description":"Scattered showers and thunderstorms remain possible.","altText":"Forecast weather story graphic.","priority":false,"order":1,"downloadUrl":"https://api.weather.gov/offices/LSX/weatherstories/download/test"}}`))
+		case "/outlooks/convective":
+			_, _ = w.Write([]byte(convectiveResponse))
 		default:
 			http.NotFound(w, r)
 		}
@@ -1142,6 +1254,12 @@ func dailyBundleServer(t *testing.T) *httptest.Server {
 	return server
 }
 
+const emptyConvectiveOutlooksResponse = `{"data":{"asOf":"2026-05-29T16:00:00Z","outlooks":[],"discussions":[]}}`
+
+const qualifyingConvectiveOutlooksResponse = `{"data":{"locationId":"home","locationName":"Brentwood","asOf":"2026-05-29T16:00:00Z","issuedAt":"2026-05-29T15:45:00Z","updatedAt":"2026-05-29T16:05:00Z","outlooks":[{"id":"day1-categorical","day":1,"outlookType":"categorical","label":"SLGT","labelText":"Slight Risk","severityRank":3,"validFrom":"2026-05-29T11:00:00-05:00","validTo":"2026-05-30T07:00:00-05:00","issuedAt":"2026-05-29T10:45:00-05:00","expiresAt":"2026-05-30T07:00:00-05:00","containsLocation":true,"sourceUrl":"https://www.spc.noaa.gov/products/outlook/day1otlk.html","imageUrl":"https://www.spc.noaa.gov/products/outlook/day1probotlk.gif","geometry":{"type":"Polygon","coordinates":[[[-91.0,38.0],[-90.0,38.0],[-90.0,39.0],[-91.0,39.0],[-91.0,38.0]]]}}],"discussions":[{"day":1,"headline":"Severe storms possible","summary":"Scattered severe storms are possible.","discussion":"Severe thunderstorms may produce damaging winds during the afternoon.","updatedAt":"2026-05-29T11:15:00-05:00"}]}}`
+
+const lowerRiskConvectiveOutlooksResponse = `{"data":{"locationId":"home","locationName":"Brentwood","asOf":"2026-05-29T16:00:00Z","issuedAt":"2026-05-29T15:45:00Z","outlooks":[{"id":"day1-categorical","day":1,"outlookType":"categorical","label":"MRGL","labelText":"Marginal Risk","severityRank":2,"validFrom":"2026-05-29T11:00:00-05:00","validTo":"2026-05-30T07:00:00-05:00","containsLocation":true,"geometry":{"type":"Polygon","coordinates":[[[-91.0,38.0],[-90.0,38.0],[-90.0,39.0],[-91.0,39.0],[-91.0,38.0]]]}}],"discussions":[{"day":1,"headline":"Low-end severe threat","summary":"An isolated severe storm cannot be ruled out.","discussion":"Low-end severe threat discussion.","updatedAt":"2026-05-29T11:15:00-05:00"}]}}`
+
 func TestResolveGenerateStorm(t *testing.T) {
 	cfg := config.Defaults()
 	cfg.WeatherAPI.Timezone = "America/Chicago"
@@ -1335,6 +1453,65 @@ func dailyTestConfig(t *testing.T, server *httptest.Server) config.Config {
 	return cfg
 }
 
+func generateDailyReportForTest(t *testing.T, cfg config.Config) *ReportResult {
+	t.Helper()
+	cfg.Workspace.Root = t.TempDir()
+	resolved, err := ResolveGenerate(GenerateRequest{
+		Config: cfg,
+		Report: ReportDaily,
+		Date:   mustParse("2026-05-29T12:00:00-05:00"),
+	}, mustParse("2026-05-29T05:00:00-05:00"))
+	if err != nil {
+		t.Fatalf("ResolveGenerate() error = %v", err)
+	}
+	result, err := GenerateReport(context.Background(), ReportRequest{
+		Config:   cfg,
+		Resolved: resolved,
+		Renderer: successfulRenderer("# Daily Report\n"),
+	})
+	if err != nil {
+		t.Fatalf("GenerateReport() error = %v", err)
+	}
+	return result
+}
+
+func readDataPackageForTest(t *testing.T, result *ReportResult) []byte {
+	t.Helper()
+	data, err := os.ReadFile(result.DataPackagePath)
+	if err != nil {
+		t.Fatalf("read data package: %v", err)
+	}
+	return data
+}
+
+func assertNoStaleModuleIntervalKeys(t *testing.T, values map[string]any) {
+	t.Helper()
+	for name, value := range values {
+		if name == "metadata" {
+			continue
+		}
+		assertNoStaleIntervalKeys(t, "briefing."+name, value)
+	}
+}
+
+func assertNoStaleIntervalKeys(t *testing.T, path string, value any) {
+	t.Helper()
+	switch typed := value.(type) {
+	case map[string]any:
+		for key, child := range typed {
+			switch key {
+			case "start_time", "end_time", "period", "start", "end":
+				t.Fatalf("%s has stale interval key %q in %#v", path, key, typed)
+			}
+			assertNoStaleIntervalKeys(t, path+"."+key, child)
+		}
+	case []any:
+		for i, child := range typed {
+			assertNoStaleIntervalKeys(t, fmt.Sprintf("%s[%d]", path, i), child)
+		}
+	}
+}
+
 func assertPathsExist(t *testing.T, paths ...string) {
 	t.Helper()
 	for _, path := range paths {
@@ -1380,9 +1557,10 @@ func priorDailyModuleSnapshot(t *testing.T, resolved report.Resolved) module.Sna
 		}},
 		{ID: module.DerivedDaypartSummaries, StanzaName: "derived_daypart_summaries", Value: map[string]any{
 			"morning": map[string]any{
-				"date":         resolved.ValidPeriod.Start.Format(timeutil.DateLayout),
-				"period":       resolved.ValidPeriod.Start.Add(6*time.Hour).Format("2006-01-02 at 3:04 PM") + " to " + resolved.ValidPeriod.Start.Add(10*time.Hour).Format("2006-01-02 at 3:04 PM"),
-				"temp_range_f": "50-58",
+				"date":          resolved.ValidPeriod.Start.Format(timeutil.DateLayout),
+				"period_begins": resolved.ValidPeriod.Start.Add(6 * time.Hour).Format("2006-01-02 at 3:04 PM"),
+				"period_ends":   resolved.ValidPeriod.Start.Add(10 * time.Hour).Format("2006-01-02 at 3:04 PM"),
+				"temp_range_f":  "50-58",
 			},
 		}},
 		{ID: module.PrecipTiming, StanzaName: "precip_timing", Value: map[string]any{
@@ -1404,7 +1582,8 @@ func priorOutlookModuleSnapshot(t *testing.T, date string) module.Snapshot {
 		{ID: module.DerivedDaypartSummaries, StanzaName: "derived_daypart_summaries", Value: map[string]any{
 			date + "_morning": map[string]any{
 				"date":            date,
-				"period":          date + " at 6:00 AM to " + date + " at 10:00 AM",
+				"period_begins":   date + " at 6:00 AM",
+				"period_ends":     date + " at 10:00 AM",
 				"temp_range_f":    "50-58",
 				"max_pop_percent": precip,
 				"max_pop_time":    "6 AM",

internal/briefing/base_modules_test.go

@@ -62,8 +62,8 @@ func TestHourlyForecastModuleUsesValidPeriodHourlyPeriods(t *testing.T) {
 	if period.TextDescription != "Showers likely." || period.TemperatureF == nil || *period.TemperatureF != 76 {
 		t.Fatalf("HourlyForecast period = %#v, want hourly period facts", period)
 	}
-	if period.StartTime != "2026-05-29 at 8:00 AM" || period.EndTime != "2026-05-29 at 9:00 AM" {
-		t.Fatalf("HourlyForecast period times = %q/%q, want friendly local time labels", period.StartTime, period.EndTime)
+	if period.PeriodBegins != "2026-05-29 at 8:00 AM" || period.PeriodEnds != "2026-05-29 at 9:00 AM" {
+		t.Fatalf("HourlyForecast period times = %q/%q, want friendly local time labels", period.PeriodBegins, period.PeriodEnds)
 	}
 	if period.WindDirection != "S" || period.ProbabilityOfPrecipitationPercent == nil || *period.ProbabilityOfPrecipitationPercent != 70 {
 		t.Fatalf("HourlyForecast period = %#v, want compass wind and precip chance", period)
@@ -73,7 +73,7 @@ func TestHourlyForecastModuleUsesValidPeriodHourlyPeriods(t *testing.T) {
 		t.Fatalf("Marshal hourly forecast: %v", err)
 	}
 	jsonText := string(data)
-	for _, field := range []string{"source_location_id", "text_description", "temperature_f", "wind_direction", "probability_of_precipitation_percent", "relative_humidity_percent"} {
+	for _, field := range []string{"source_location_id", "period_begins", "period_ends", "text_description", "temperature_f", "wind_direction", "probability_of_precipitation_percent", "relative_humidity_percent"} {
 		if !strings.Contains(jsonText, field) {
 			t.Fatalf("hourly json = %s, want field %s", jsonText, field)
 		}
@@ -81,8 +81,8 @@ func TestHourlyForecastModuleUsesValidPeriodHourlyPeriods(t *testing.T) {
 	if strings.Contains(jsonText, "wind_direction_degrees") || strings.Contains(jsonText, "Tomorrow") {
 		t.Fatalf("hourly json = %s, want valid-period prompt fields only", jsonText)
 	}
-	if strings.Contains(jsonText, `"start_time":"2026-05-29T`) || strings.Contains(jsonText, `"end_time":"2026-05-29T`) {
-		t.Fatalf("hourly json = %s, want friendly local start/end times", jsonText)
+	if strings.Contains(jsonText, `"start_time"`) || strings.Contains(jsonText, `"end_time"`) {
+		t.Fatalf("hourly json = %s, want period_begins/period_ends instead of start_time/end_time", jsonText)
 	}
 }
 
@@ -113,8 +113,8 @@ func TestNarrativeForecastModuleUsesValidPeriodNarrativePeriods(t *testing.T) {
 	if period.Name != "Today" || period.TextDescription != "Morning storms, then partly sunny." {
 		t.Fatalf("NarrativeForecast period = %#v, want Today narrative", period)
 	}
-	if period.StartTime != "2026-05-29 at 6:00 AM" || period.EndTime != "2026-05-29 at 6:00 PM" {
-		t.Fatalf("NarrativeForecast period times = %q/%q, want friendly local time labels", period.StartTime, period.EndTime)
+	if period.PeriodBegins != "2026-05-29 at 6:00 AM" || period.PeriodEnds != "2026-05-29 at 6:00 PM" {
+		t.Fatalf("NarrativeForecast period times = %q/%q, want friendly local time labels", period.PeriodBegins, period.PeriodEnds)
 	}
 	if period.IsDay == nil || !*period.IsDay || period.TemperatureF == nil || *period.TemperatureF != 81 || period.ProbabilityOfPrecipitationPercent == nil || *period.ProbabilityOfPrecipitationPercent != 60 {
 		t.Fatalf("NarrativeForecast period = %#v, want day, temperature, and precip values", period)
@@ -127,7 +127,7 @@ func TestNarrativeForecastModuleUsesValidPeriodNarrativePeriods(t *testing.T) {
 		t.Fatalf("Marshal narrative forecast: %v", err)
 	}
 	jsonText := string(data)
-	for _, field := range []string{"source_location_id", "text_description", "temperature_f", "wind_speed_mph", "wind_direction", "probability_of_precipitation_percent"} {
+	for _, field := range []string{"source_location_id", "period_begins", "period_ends", "text_description", "temperature_f", "wind_speed_mph", "wind_direction", "probability_of_precipitation_percent"} {
 		if !strings.Contains(jsonText, field) {
 			t.Fatalf("narrative json = %s, want field %s", jsonText, field)
 		}
@@ -135,8 +135,8 @@ func TestNarrativeForecastModuleUsesValidPeriodNarrativePeriods(t *testing.T) {
 	if strings.Contains(jsonText, "wind_direction_degrees") {
 		t.Fatalf("narrative json = %s, want compass wind_direction without degrees field", jsonText)
 	}
-	if strings.Contains(jsonText, `"start_time":"2026-05-29T`) || strings.Contains(jsonText, `"end_time":"2026-05-29T`) {
-		t.Fatalf("narrative json = %s, want friendly local start/end times", jsonText)
+	if strings.Contains(jsonText, `"start_time"`) || strings.Contains(jsonText, `"end_time"`) {
+		t.Fatalf("narrative json = %s, want period_begins/period_ends instead of start_time/end_time", jsonText)
 	}
 	if strings.Contains(jsonText, "Tomorrow night") {
 		t.Fatalf("narrative json = %s, want only valid-period narrative periods", jsonText)
@@ -285,13 +285,19 @@ func TestAreaForecastDiscussionAndWeatherStoryModules(t *testing.T) {
 	if !story.Available || story.Title != "Rain Chances" || story.Description != "Scattered showers are possible." {
 		t.Fatalf("WeatherStory = %#v, want structured story fields", story)
 	}
+	if story.PeriodBegins != "2026-05-29 at 6:00 AM" || story.PeriodEnds != "2026-05-29 at 6:00 PM" {
+		t.Fatalf("WeatherStory period = %q/%q, want friendly local period labels", story.PeriodBegins, story.PeriodEnds)
+	}
 	data, err := json.Marshal(storyOutput.Value)
 	if err != nil {
 		t.Fatalf("Marshal weather story: %v", err)
 	}
-	if !strings.Contains(string(data), "download_url") {
+	if !strings.Contains(string(data), "download_url") || !strings.Contains(string(data), "period_begins") || !strings.Contains(string(data), "period_ends") {
 		t.Fatalf("weather story json = %s, want snake_case download_url", string(data))
 	}
+	if strings.Contains(string(data), "start_time") || strings.Contains(string(data), "end_time") {
+		t.Fatalf("weather story json = %s, want period_begins/period_ends instead of start_time/end_time", string(data))
+	}
 }
 
 func TestAreaForecastDiscussionModuleCanSelectSections(t *testing.T) {

internal/briefing/derived_daypart_summaries_module.go

@@ -12,7 +12,8 @@ import (
 
 type DerivedDaypartSummaryModule struct {
 	Date               string   `json:"date,omitempty"`
-	Period             string   `json:"period,omitempty"`
+	PeriodBegins       string   `json:"period_begins,omitempty"`
+	PeriodEnds         string   `json:"period_ends,omitempty"`
 	TempRangeF         string   `json:"temp_range_f,omitempty"`
 	ApparentTempRangeF string   `json:"apparent_temp_range_f,omitempty"`
 	MaxPopPercent      *int     `json:"max_pop_percent,omitempty"`
@@ -46,7 +47,8 @@ func buildDerivedDaypartSummariesModule(ctx ModuleContext, _ any) (*module.Outpu
 func derivedDaypartSummaryValue(daypart forecast.DaypartSummary, timezone string) DerivedDaypartSummaryModule {
 	value := DerivedDaypartSummaryModule{
 		Date:               localDateLabel(daypart.Period.Start, timezone),
-		Period:             friendlyPeriodLabel(daypart.Period, timezone),
+		PeriodBegins:       friendlyPeriodBeginsLabel(daypart.Period, timezone),
+		PeriodEnds:         friendlyPeriodEndsLabel(daypart.Period, timezone),
 		TempRangeF:         rangeLabel(daypart.Temperature),
 		ApparentTempRangeF: daypartApparentRangeLabel(daypart.ApparentTemperature),
 		DominantCondition:  daypart.DominantCondition,

internal/briefing/derived_modules_test.go

@@ -102,10 +102,10 @@ func TestPrecipTimingModuleHandlesRainyAndDryForecasts(t *testing.T) {
 	if len(rainy.PrecipitationWindows) != 2 {
 		t.Fatalf("rainy precipitation windows = %#v, want two windows", rainy.PrecipitationWindows)
 	}
-	if rainy.PrecipitationWindows[0].Start != "8 AM" || rainy.PrecipitationWindows[0].End != "9 AM" || rainy.PrecipitationWindows[0].MaxPopPercent == nil || *rainy.PrecipitationWindows[0].MaxPopPercent != 60 {
+	if rainy.PrecipitationWindows[0].PeriodBegins != "2026-05-29 at 8:00 AM" || rainy.PrecipitationWindows[0].PeriodEnds != "2026-05-29 at 9:00 AM" || rainy.PrecipitationWindows[0].MaxPopPercent == nil || *rainy.PrecipitationWindows[0].MaxPopPercent != 60 {
 		t.Fatalf("first precipitation window = %#v, want 8-9 AM at 60%%", rainy.PrecipitationWindows[0])
 	}
-	if rainy.PrecipitationWindows[1].Start != "12 PM" || rainy.PrecipitationWindows[1].End != "2 PM" || rainy.PrecipitationWindows[1].MaxPopPercent == nil || *rainy.PrecipitationWindows[1].MaxPopPercent != 80 {
+	if rainy.PrecipitationWindows[1].PeriodBegins != "2026-05-29 at 12:00 PM" || rainy.PrecipitationWindows[1].PeriodEnds != "2026-05-29 at 2:00 PM" || rainy.PrecipitationWindows[1].MaxPopPercent == nil || *rainy.PrecipitationWindows[1].MaxPopPercent != 80 {
 		t.Fatalf("second precipitation window = %#v, want noon-2 PM at 80%%", rainy.PrecipitationWindows[1])
 	}
 	data, err := json.Marshal(output.Value)
@@ -115,6 +115,9 @@ func TestPrecipTimingModuleHandlesRainyAndDryForecasts(t *testing.T) {
 	if !strings.Contains(string(data), "precipitation_windows") || !strings.Contains(string(data), "probability_threshold") {
 		t.Fatalf("precip timing json = %s, want threshold and windows", string(data))
 	}
+	if strings.Contains(string(data), `"start"`) || strings.Contains(string(data), `"end"`) {
+		t.Fatalf("precip timing json = %s, want period_begins/period_ends instead of start/end", string(data))
+	}
 	if strings.Contains(string(data), "first_precip_hour") || strings.Contains(string(data), "last_precip_hour") {
 		t.Fatalf("precip timing json = %s, want no ambiguous first/last fields", string(data))
 	}
@@ -150,8 +153,8 @@ func TestDerivedDaypartSummariesExposeConfiguredKeysAndHazards(t *testing.T) {
 	if morning.TempRangeF != "58" || morning.MaxPopPercent == nil || *morning.MaxPopPercent != 60 {
 		t.Fatalf("morning = %#v, want temp range and precip peak", morning)
 	}
-	if morning.Date != "2026-05-29" || morning.Period != "2026-05-29 at 6:00 AM to 2026-05-29 at 12:00 PM" {
-		t.Fatalf("morning period = %q/%q, want friendly local date and period labels", morning.Date, morning.Period)
+	if morning.Date != "2026-05-29" || morning.PeriodBegins != "2026-05-29 at 6:00 AM" || morning.PeriodEnds != "2026-05-29 at 12:00 PM" {
+		t.Fatalf("morning period = %q/%q/%q, want friendly local date and period labels", morning.Date, morning.PeriodBegins, morning.PeriodEnds)
 	}
 	afternoon := value["afternoon"]
 	if !afternoon.Heat || !afternoon.Wind || afternoon.MaxWindGustMph == nil || *afternoon.MaxWindGustMph != 42 {
@@ -166,12 +169,12 @@ func TestDerivedDaypartSummariesExposeConfiguredKeysAndHazards(t *testing.T) {
 		t.Fatalf("marshal daypart summaries: %v", err)
 	}
 	jsonText := string(data)
-	for _, field := range []string{"date", "period", "temp_range_f", "max_pop_percent", "max_wind_gust_mph", "dominant_condition"} {
+	for _, field := range []string{"date", "period_begins", "period_ends", "temp_range_f", "max_pop_percent", "max_wind_gust_mph", "dominant_condition"} {
 		if !strings.Contains(jsonText, field) {
 			t.Fatalf("daypart json = %s, want field %s", jsonText, field)
 		}
 	}
-	if strings.Contains(jsonText, `"period":{"start"`) || strings.Contains(jsonText, `T06:00:00`) {
+	if strings.Contains(jsonText, `"period":`) || strings.Contains(jsonText, `T06:00:00`) {
 		t.Fatalf("daypart json = %s, want friendly period label instead of raw timestamps", jsonText)
 	}
 }
@@ -191,6 +194,12 @@ func TestOutdoorWindowsAndTomorrowPlanningModulesPreserveDailyContent(t *testing
 	if outdoor.Best.Daypart != "overnight" || outdoor.Worst.Daypart != "afternoon" {
 		t.Fatalf("outdoor windows = %#v, want quiet overnight and stormy afternoon", outdoor)
 	}
+	if outdoor.Best.PeriodBegins != "2026-05-29 at 12:00 AM" || outdoor.Best.PeriodEnds != "2026-05-29 at 6:00 AM" {
+		t.Fatalf("best outdoor period = %#v, want overnight period labels", outdoor.Best)
+	}
+	if outdoor.Worst.PeriodBegins != "2026-05-29 at 12:00 PM" || outdoor.Worst.PeriodEnds != "2026-05-29 at 6:00 PM" {
+		t.Fatalf("worst outdoor period = %#v, want afternoon period labels", outdoor.Worst)
+	}
 
 	planningOutput, err := registry.BuildModule(ctx, module.ConfigItem{ID: module.TomorrowPlanning})
 	if err != nil {

internal/briefing/hourly_forecast_module.go

@@ -4,6 +4,7 @@ import (
 	"time"
 
 	"gitea.maximumdirect.net/eric/weatherreporter/internal/module"
+	"gitea.maximumdirect.net/eric/weatherreporter/internal/timeutil"
 	"gitea.maximumdirect.net/eric/weatherreporter/internal/weatherdata"
 )
 
@@ -17,8 +18,8 @@ type HourlyForecastModule struct {
 }
 
 type HourlyForecastPeriod struct {
-	StartTime                         string   `json:"start_time,omitempty"`
-	EndTime                           string   `json:"end_time,omitempty"`
+	PeriodBegins                      string   `json:"period_begins,omitempty"`
+	PeriodEnds                        string   `json:"period_ends,omitempty"`
 	Name                              string   `json:"name,omitempty"`
 	IsDay                             *bool    `json:"is_day,omitempty"`
 	ConditionCode                     *int     `json:"condition_code,omitempty"`
@@ -74,9 +75,10 @@ func buildHourlyForecastModule(ctx ModuleContext, _ any) (*module.Output, error)
 func hourlyForecastPeriods(periods []weatherdata.ForecastPeriod, timezone string) []HourlyForecastPeriod {
 	out := make([]HourlyForecastPeriod, 0, len(periods))
 	for _, period := range periods {
+		validPeriod := timeutil.Period{Start: period.StartTime, End: period.EndTime}
 		out = append(out, HourlyForecastPeriod{
-			StartTime:                         friendlyDateTimeLabel(period.StartTime, timezone),
-			EndTime:                           friendlyDateTimeLabel(period.EndTime, timezone),
+			PeriodBegins:                      friendlyPeriodBeginsLabel(validPeriod, timezone),
+			PeriodEnds:                        friendlyPeriodEndsLabel(validPeriod, timezone),
 			Name:                              period.Name,
 			IsDay:                             copyBool(period.IsDay),
 			ConditionCode:                     copyInt(period.ConditionCode),

internal/briefing/module_format_helpers.go

@@ -67,18 +67,18 @@ func timedClockLabel(value *forecast.TimedValue, timezone string) string {
 	return clockLabel(value.Time, timezone)
 }
 
-func periodClockLabel(period timeutil.Period, timezone string) string {
+func friendlyPeriodBeginsLabel(period timeutil.Period, timezone string) string {
 	if !period.IsValid() {
 		return ""
 	}
-	return clockLabel(period.Start, timezone) + "-" + clockLabel(period.End, timezone)
+	return friendlyDateTimeLabel(period.Start, timezone)
 }
 
-func friendlyPeriodLabel(period timeutil.Period, timezone string) string {
+func friendlyPeriodEndsLabel(period timeutil.Period, timezone string) string {
 	if !period.IsValid() {
 		return ""
 	}
-	return friendlyDateTimeLabel(period.Start, timezone) + " to " + friendlyDateTimeLabel(period.End, timezone)
+	return friendlyDateTimeLabel(period.End, timezone)
 }
 
 func friendlyDateTimeLabel(value time.Time, timezone string) string {

internal/briefing/modules.go

@@ -162,6 +162,8 @@ func collectedFactAvailable(requirement module.FactRequirement, ctx ModuleContex
 		return ctx.Collected.Discussion != nil
 	case module.CollectedWeatherStory:
 		return ctx.Collected.WeatherStory != nil
+	case module.CollectedSPCConvectiveOutlooks:
+		return ctx.Collected.SPCConvectiveOutlooks != nil
 	case module.CollectedSourceMetadata:
 		return len(ctx.Collected.SourceProvenance) > 0 || len(ctx.Collected.SourceWarnings) > 0
 	default:
@@ -183,6 +185,8 @@ func derivedFactAvailable(requirement module.FactRequirement, ctx ModuleContext)
 		return len(ctx.Derived.DaypartSummaries) > 0
 	case module.RequiresDerivedPrecipTiming:
 		return true
+	case module.RequiresDerivedSPCConvectiveOutlooks:
+		return ctx.Derived.SPCConvectiveOutlooks != nil
 	default:
 		return false
 	}
@@ -323,6 +327,16 @@ func defaultModuleDefinitions() []ModuleDefinition {
 			MissingData:       module.MissingDataEmpty,
 			Builder:           buildAlertDigestModule,
 		},
+		{
+			ID:                module.SPCConvectiveOutlooks,
+			StanzaName:        string(module.SPCConvectiveOutlooks),
+			DefaultOptions:    module.SPCConvectiveOutlooksOptions{},
+			RequiredCollected: []module.FactRequirement{module.CollectedSPCConvectiveOutlooks},
+			RequiredDerived:   []module.FactRequirement{module.RequiresDerivedSPCConvectiveOutlooks},
+			SupportedReports:  allReports,
+			MissingData:       module.MissingDataEmpty,
+			Builder:           buildSPCConvectiveOutlooksModule,
+		},
 		{
 			ID:                module.AreaForecastDiscussion,
 			StanzaName:        "area_forecast_discussion",
@@ -332,6 +346,16 @@ func defaultModuleDefinitions() []ModuleDefinition {
 			MissingData:       module.MissingDataOmit,
 			Builder:           buildAreaForecastDiscussionModule,
 		},
+		{
+			ID:                module.SPCConvectiveDiscussion,
+			StanzaName:        string(module.SPCConvectiveDiscussion),
+			DefaultOptions:    module.SPCConvectiveDiscussionOptions{},
+			RequiredCollected: []module.FactRequirement{module.CollectedSPCConvectiveOutlooks},
+			RequiredDerived:   []module.FactRequirement{module.RequiresDerivedSPCConvectiveOutlooks},
+			SupportedReports:  allReports,
+			MissingData:       module.MissingDataOmit,
+			Builder:           buildSPCConvectiveDiscussionModule,
+		},
 		{
 			ID:                module.WeatherStory,
 			StanzaName:        "weather_story",

internal/briefing/modules_test.go

@@ -4,8 +4,10 @@ import (
 	"strings"
 	"testing"
 
+	"gitea.maximumdirect.net/eric/weatherreporter/internal/facts"
 	"gitea.maximumdirect.net/eric/weatherreporter/internal/module"
 	"gitea.maximumdirect.net/eric/weatherreporter/internal/report"
+	"gitea.maximumdirect.net/eric/weatherreporter/internal/weatherdata"
 )
 
 func TestDefaultModuleRegistryValidatesReportDefaults(t *testing.T) {
@@ -128,6 +130,30 @@ func TestModuleRegistryAcceptsTypedOptions(t *testing.T) {
 	}
 }
 
+func TestSPCConvectiveOutlookCollectedRequirementAvailability(t *testing.T) {
+	ctx := ModuleContext{}
+	if collectedFactAvailable(module.CollectedSPCConvectiveOutlooks, ctx) {
+		t.Fatal("collectedFactAvailable() = true, want false without source")
+	}
+
+	ctx.Collected = facts.CollectedFacts{SPCConvectiveOutlooks: &weatherdata.ConvectiveOutlookRun{}}
+	if !collectedFactAvailable(module.CollectedSPCConvectiveOutlooks, ctx) {
+		t.Fatal("collectedFactAvailable() = false, want true with checked source")
+	}
+}
+
+func TestSPCConvectiveOutlookDerivedRequirementAvailability(t *testing.T) {
+	ctx := ModuleContext{}
+	if derivedFactAvailable(module.RequiresDerivedSPCConvectiveOutlooks, ctx) {
+		t.Fatal("derivedFactAvailable() = true, want false without derived outlooks")
+	}
+
+	ctx.Derived = facts.DerivedFacts{SPCConvectiveOutlooks: []weatherdata.ConvectiveOutlook{}}
+	if !derivedFactAvailable(module.RequiresDerivedSPCConvectiveOutlooks, ctx) {
+		t.Fatal("derivedFactAvailable() = false, want true for checked empty derived outlooks")
+	}
+}
+
 func noopModuleBuilder(ModuleContext, any) (*module.Output, error) {
 	return &module.Output{ID: module.Metadata, StanzaName: "metadata", Value: struct{}{}}, nil
 }

internal/briefing/narrative_forecast_module.go

@@ -4,6 +4,7 @@ import (
 	"time"
 
 	"gitea.maximumdirect.net/eric/weatherreporter/internal/module"
+	"gitea.maximumdirect.net/eric/weatherreporter/internal/timeutil"
 	"gitea.maximumdirect.net/eric/weatherreporter/internal/weatherdata"
 )
 
@@ -18,8 +19,8 @@ type NarrativeForecastModule struct {
 
 type NarrativeForecastPeriod struct {
 	Name                              string   `json:"name,omitempty"`
-	StartTime                         string   `json:"start_time,omitempty"`
-	EndTime                           string   `json:"end_time,omitempty"`
+	PeriodBegins                      string   `json:"period_begins,omitempty"`
+	PeriodEnds                        string   `json:"period_ends,omitempty"`
 	IsDay                             *bool    `json:"is_day,omitempty"`
 	TextDescription                   string   `json:"text_description,omitempty"`
 	TemperatureC                      *float64 `json:"temperature_c,omitempty"`
@@ -58,10 +59,11 @@ func buildNarrativeForecastModule(ctx ModuleContext, _ any) (*module.Output, err
 func narrativeForecastPeriods(periods []weatherdata.ForecastPeriod, timezone string) []NarrativeForecastPeriod {
 	out := make([]NarrativeForecastPeriod, 0, len(periods))
 	for _, period := range periods {
+		validPeriod := timeutil.Period{Start: period.StartTime, End: period.EndTime}
 		out = append(out, NarrativeForecastPeriod{
 			Name:                              period.Name,
-			StartTime:                         friendlyDateTimeLabel(period.StartTime, timezone),
-			EndTime:                           friendlyDateTimeLabel(period.EndTime, timezone),
+			PeriodBegins:                      friendlyPeriodBeginsLabel(validPeriod, timezone),
+			PeriodEnds:                        friendlyPeriodEndsLabel(validPeriod, timezone),
 			IsDay:                             copyBool(period.IsDay),
 			TextDescription:                   period.TextDescription,
 			TemperatureC:                      copyFloat(period.TemperatureC),

internal/briefing/outdoor_windows_module.go

@@ -8,31 +8,31 @@ type OutdoorWindowsModule struct {
 }
 
 type OutdoorWindowModule struct {
-	Daypart string   `json:"daypart"`
-	Start   string   `json:"start"`
-	End     string   `json:"end"`
-	Reasons []string `json:"reasons,omitempty"`
-	Score   float64  `json:"score"`
+	Daypart      string   `json:"daypart"`
+	PeriodBegins string   `json:"period_begins,omitempty"`
+	PeriodEnds   string   `json:"period_ends,omitempty"`
+	Reasons      []string `json:"reasons,omitempty"`
+	Score        float64  `json:"score"`
 }
 
 func buildOutdoorWindowsModule(ctx ModuleContext, _ any) (*module.Output, error) {
 	windows := buildOutdoorWindows(ctx.Derived.DaypartSummaries)
 	value := OutdoorWindowsModule{
-		Best:  outdoorWindowValue(windows.Best),
-		Worst: outdoorWindowValue(windows.Worst),
+		Best:  outdoorWindowValue(windows.Best, ctx.Timezone),
+		Worst: outdoorWindowValue(windows.Worst, ctx.Timezone),
 	}
 	return &module.Output{ID: module.OutdoorWindows, StanzaName: "outdoor_windows", Value: value}, nil
 }
 
-func outdoorWindowValue(window *OutdoorWindow) *OutdoorWindowModule {
+func outdoorWindowValue(window *OutdoorWindow, timezone string) *OutdoorWindowModule {
 	if window == nil {
 		return nil
 	}
 	return &OutdoorWindowModule{
-		Daypart: window.Daypart,
-		Start:   window.Start,
-		End:     window.End,
-		Reasons: append([]string(nil), window.Reasons...),
-		Score:   window.Score,
+		Daypart:      window.Daypart,
+		PeriodBegins: friendlyPeriodBeginsLabel(window.Period, timezone),
+		PeriodEnds:   friendlyPeriodEndsLabel(window.Period, timezone),
+		Reasons:      append([]string(nil), window.Reasons...),
+		Score:        window.Score,
 	}
 }

internal/briefing/precip_timing_module.go

@@ -14,8 +14,8 @@ type PrecipTimingModule struct {
 }
 
 type PrecipitationWindowModule struct {
-	Start         string `json:"start"`
-	End           string `json:"end,omitempty"`
+	PeriodBegins  string `json:"period_begins"`
+	PeriodEnds    string `json:"period_ends,omitempty"`
 	MaxPopPercent *int   `json:"max_pop_percent,omitempty"`
 	MaxPopTime    string `json:"max_pop_time,omitempty"`
 }
@@ -36,10 +36,10 @@ func precipTimingValue(timing forecast.PrecipTiming, timezone string) PrecipTimi
 	}
 	for _, window := range timing.PrecipitationWindows {
 		item := PrecipitationWindowModule{
-			Start: clockLabel(window.Start, timezone),
+			PeriodBegins: friendlyDateTimeLabel(window.Start, timezone),
 		}
 		if window.End != nil {
-			item.End = clockLabel(*window.End, timezone)
+			item.PeriodEnds = friendlyDateTimeLabel(*window.End, timezone)
 		}
 		item.MaxPopPercent = roundedInt(&window.MaxPrecipitationProbability.Value)
 		item.MaxPopTime = clockLabel(window.MaxPrecipitationProbability.Time, timezone)

internal/briefing/spc_convective_discussion_module.go

@@ -0,0 +1,94 @@
+package briefing
+
+import (
+	"fmt"
+
+	"gitea.maximumdirect.net/eric/weatherreporter/internal/module"
+	"gitea.maximumdirect.net/eric/weatherreporter/internal/timeutil"
+	"gitea.maximumdirect.net/eric/weatherreporter/internal/weatherdata"
+)
+
+const defaultSPCConvectiveDiscussionMinimumSeverityRank = 3
+const spcCategoricalOutlookType = "categorical"
+
+type SPCConvectiveDiscussionModule struct {
+	IncludedBecause string                          `json:"included_because"`
+	Discussions     []SPCConvectiveDiscussionRecord `json:"discussions"`
+}
+
+type SPCConvectiveDiscussionRecord struct {
+	Day          int    `json:"day,omitempty"`
+	PeriodBegins string `json:"period_begins,omitempty"`
+	PeriodEnds   string `json:"period_ends,omitempty"`
+	Headline     string `json:"headline,omitempty"`
+	Summary      string `json:"summary,omitempty"`
+	Discussion   string `json:"discussion,omitempty"`
+	UpdatedAt    string `json:"updated_at,omitempty"`
+}
+
+func buildSPCConvectiveDiscussionModule(ctx ModuleContext, _ any) (*module.Output, error) {
+	qualifyingPeriods := spcConvectiveDiscussionQualifyingPeriods(ctx.Derived.SPCConvectiveOutlooks, ctx.Resolved.ValidPeriod)
+	if len(qualifyingPeriods) == 0 {
+		return nil, nil
+	}
+	records := spcConvectiveDiscussionRecords(qualifyingPeriods, ctx.Derived.SPCConvectiveDiscussions, ctx.Timezone)
+	if len(records) == 0 {
+		return nil, nil
+	}
+	value := SPCConvectiveDiscussionModule{
+		IncludedBecause: fmt.Sprintf("%s severity_rank >= %d", spcCategoricalOutlookType, defaultSPCConvectiveDiscussionMinimumSeverityRank),
+		Discussions:     records,
+	}
+	return &module.Output{ID: module.SPCConvectiveDiscussion, StanzaName: string(module.SPCConvectiveDiscussion), Value: value}, nil
+}
+
+func spcConvectiveDiscussionQualifyingPeriods(outlooks []weatherdata.ConvectiveOutlook, reportPeriod timeutil.Period) map[int]timeutil.Period {
+	periods := map[int]timeutil.Period{}
+	for _, outlook := range outlooks {
+		if outlook.OutlookType != spcCategoricalOutlookType {
+			continue
+		}
+		if outlook.SeverityRank == nil || *outlook.SeverityRank < defaultSPCConvectiveDiscussionMinimumSeverityRank {
+			continue
+		}
+		outlookPeriod := timeutil.Period{Start: outlook.ValidFrom, End: outlook.ValidTo}
+		if !outlookPeriod.IsValid() || !outlookPeriod.Overlaps(reportPeriod) {
+			continue
+		}
+		if existing, ok := periods[outlook.Day]; ok {
+			if outlookPeriod.Start.Before(existing.Start) {
+				existing.Start = outlookPeriod.Start
+			}
+			if outlookPeriod.End.After(existing.End) {
+				existing.End = outlookPeriod.End
+			}
+			periods[outlook.Day] = existing
+			continue
+		}
+		periods[outlook.Day] = outlookPeriod
+	}
+	return periods
+}
+
+func spcConvectiveDiscussionRecords(qualifyingPeriods map[int]timeutil.Period, discussions []weatherdata.ConvectiveOutlookDiscussion, timezone string) []SPCConvectiveDiscussionRecord {
+	records := make([]SPCConvectiveDiscussionRecord, 0, len(discussions))
+	for _, discussion := range discussions {
+		period, ok := qualifyingPeriods[discussion.Day]
+		if !ok {
+			continue
+		}
+		if discussion.Discussion == "" {
+			continue
+		}
+		records = append(records, SPCConvectiveDiscussionRecord{
+			Day:          discussion.Day,
+			PeriodBegins: friendlyPeriodBeginsLabel(period, timezone),
+			PeriodEnds:   friendlyPeriodEndsLabel(period, timezone),
+			Headline:     discussion.Headline,
+			Summary:      discussion.Summary,
+			Discussion:   discussion.Discussion,
+			UpdatedAt:    friendlyOptionalTime(discussion.UpdatedAt, timezone),
+		})
+	}
+	return records
+}

internal/briefing/spc_convective_discussion_module_test.go

@@ -0,0 +1,317 @@
+package briefing
+
+import (
+	"encoding/json"
+	"strings"
+	"testing"
+	"time"
+
+	"gitea.maximumdirect.net/eric/weatherreporter/internal/module"
+	"gitea.maximumdirect.net/eric/weatherreporter/internal/weatherdata"
+)
+
+func TestSPCConvectiveDiscussionModuleOmitsBelowThresholdButOutlookRemains(t *testing.T) {
+	registry := MustDefaultModuleRegistry()
+	ctx := spcConvectiveDiscussionContext(2, []weatherdata.ConvectiveOutlookDiscussion{
+		spcDiscussion(1, "Lower risk", "General thunderstorms.", "No organized severe weather is expected.", "2026-05-29T08:30:00-05:00"),
+	})
+
+	output, err := registry.BuildModule(ctx, module.ConfigItem{ID: module.SPCConvectiveDiscussion})
+	if err != nil {
+		t.Fatalf("BuildModule(discussion) error = %v", err)
+	}
+	if output != nil {
+		t.Fatalf("discussion output = %#v, want omitted below threshold", output)
+	}
+
+	outlookOutput, err := registry.BuildModule(ctx, module.ConfigItem{ID: module.SPCConvectiveOutlooks})
+	if err != nil {
+		t.Fatalf("BuildModule(outlooks) error = %v", err)
+	}
+	outlookValue := moduleValue[SPCConvectiveOutlooksModule](t, outlookOutput)
+	if !outlookValue.Checked || outlookValue.OutlookCount != 1 {
+		t.Fatalf("outlook value = %#v, want lower-risk outlook still emitted", outlookValue)
+	}
+}
+
+func TestSPCConvectiveDiscussionModuleIncludesEqualThresholdDiscussion(t *testing.T) {
+	registry := MustDefaultModuleRegistry()
+	ctx := spcConvectiveDiscussionContext(3, []weatherdata.ConvectiveOutlookDiscussion{
+		spcDiscussion(1, "Severe storms possible", "Scattered severe storms are possible.", "A few storms may become severe during the afternoon.", "2026-05-29T08:30:00-05:00"),
+	})
+
+	output, err := registry.BuildModule(ctx, module.ConfigItem{ID: module.SPCConvectiveDiscussion})
+	if err != nil {
+		t.Fatalf("BuildModule() error = %v", err)
+	}
+	if output == nil || output.ID != module.SPCConvectiveDiscussion || output.StanzaName != "spc_convective_discussion" {
+		t.Fatalf("output = %#v, want spc convective discussion stanza", output)
+	}
+	value := moduleValue[SPCConvectiveDiscussionModule](t, output)
+	if value.IncludedBecause != "categorical severity_rank >= 3" || len(value.Discussions) != 1 {
+		t.Fatalf("value = %#v, want threshold reason and one discussion", value)
+	}
+	discussion := value.Discussions[0]
+	if discussion.Day != 1 || discussion.Headline != "Severe storms possible" || discussion.Summary == "" || discussion.Discussion == "" {
+		t.Fatalf("discussion = %#v, want prompt-facing discussion fields", discussion)
+	}
+	if discussion.PeriodBegins != "2026-05-29 at 11:00 AM" || discussion.PeriodEnds != "2026-05-30 at 7:00 AM" {
+		t.Fatalf("Period = %q/%q, want qualifying outlook valid period", discussion.PeriodBegins, discussion.PeriodEnds)
+	}
+	if discussion.UpdatedAt != "2026-05-29 at 8:30 AM" {
+		t.Fatalf("UpdatedAt = %q, want friendly local time", discussion.UpdatedAt)
+	}
+	data, err := json.Marshal(output.Value)
+	if err != nil {
+		t.Fatalf("Marshal() error = %v", err)
+	}
+	text := string(data)
+	for _, field := range []string{"included_because", "discussions", "period_begins", "period_ends", "headline", "summary", "discussion", "updated_at"} {
+		if !strings.Contains(text, field) {
+			t.Fatalf("json = %s, want field %s", text, field)
+		}
+	}
+	if strings.Contains(text, `"period":`) {
+		t.Fatalf("json = %s, want period_begins/period_ends instead of period", text)
+	}
+}
+
+func TestSPCConvectiveDiscussionModuleIncludesAboveThresholdDiscussion(t *testing.T) {
+	registry := MustDefaultModuleRegistry()
+	ctx := spcConvectiveDiscussionContext(4, []weatherdata.ConvectiveOutlookDiscussion{
+		spcDiscussion(1, "Enhanced severe risk", "Numerous severe storms are possible.", "Severe storms may produce damaging winds.", "2026-05-29T09:15:00-05:00"),
+	})
+
+	output, err := registry.BuildModule(ctx, module.ConfigItem{ID: module.SPCConvectiveDiscussion})
+	if err != nil {
+		t.Fatalf("BuildModule() error = %v", err)
+	}
+	value := moduleValue[SPCConvectiveDiscussionModule](t, output)
+	if len(value.Discussions) != 1 || value.Discussions[0].Headline != "Enhanced severe risk" {
+		t.Fatalf("value = %#v, want above-threshold discussion", value)
+	}
+}
+
+func TestSPCConvectiveDiscussionModuleIgnoresHighRankNonCategoricalOutlook(t *testing.T) {
+	registry := MustDefaultModuleRegistry()
+	rank := 30
+	ctx := testModuleContext()
+	outlook := weatherdata.ConvectiveOutlook{
+		ID:           "day1-wind-30",
+		Day:          1,
+		OutlookType:  "wind",
+		Label:        "30%",
+		LabelText:    "30% Wind Risk",
+		SeverityRank: &rank,
+		ValidFrom:    mustParseModuleTime("2026-05-29T11:00:00-05:00"),
+		ValidTo:      mustParseModuleTime("2026-05-30T07:00:00-05:00"),
+	}
+	ctx.Collected.SPCConvectiveOutlooks = &weatherdata.ConvectiveOutlookRun{
+		Outlooks: []weatherdata.ConvectiveOutlook{outlook},
+	}
+	ctx.Derived.SPCConvectiveOutlooks = []weatherdata.ConvectiveOutlook{outlook}
+	ctx.Derived.SPCConvectiveDiscussions = []weatherdata.ConvectiveOutlookDiscussion{
+		spcDiscussion(1, "Wind risk discussion", "High wind probabilities.", "This discussion should not be emitted from wind severity rank.", "2026-05-29T08:30:00-05:00"),
+	}
+
+	output, err := registry.BuildModule(ctx, module.ConfigItem{ID: module.SPCConvectiveDiscussion})
+	if err != nil {
+		t.Fatalf("BuildModule() error = %v", err)
+	}
+	if output != nil {
+		t.Fatalf("output = %#v, want non-categorical outlook ignored for discussion threshold", output)
+	}
+}
+
+func TestSPCConvectiveDiscussionModuleRequiresCategoricalThresholdForMixedSameDayOutlooks(t *testing.T) {
+	registry := MustDefaultModuleRegistry()
+	rank2 := 2
+	rank30 := 30
+	ctx := testModuleContext()
+	categorical := weatherdata.ConvectiveOutlook{
+		ID:           "day1-marginal",
+		Day:          1,
+		OutlookType:  "categorical",
+		Label:        "MRGL",
+		LabelText:    "Marginal Risk",
+		SeverityRank: &rank2,
+		ValidFrom:    mustParseModuleTime("2026-05-29T11:00:00-05:00"),
+		ValidTo:      mustParseModuleTime("2026-05-30T07:00:00-05:00"),
+	}
+	wind := weatherdata.ConvectiveOutlook{
+		ID:           "day1-wind-30",
+		Day:          1,
+		OutlookType:  "wind",
+		Label:        "30%",
+		LabelText:    "30% Wind Risk",
+		SeverityRank: &rank30,
+		ValidFrom:    mustParseModuleTime("2026-05-29T11:00:00-05:00"),
+		ValidTo:      mustParseModuleTime("2026-05-30T07:00:00-05:00"),
+	}
+	ctx.Collected.SPCConvectiveOutlooks = &weatherdata.ConvectiveOutlookRun{
+		Outlooks: []weatherdata.ConvectiveOutlook{categorical, wind},
+	}
+	ctx.Derived.SPCConvectiveOutlooks = []weatherdata.ConvectiveOutlook{categorical, wind}
+	ctx.Derived.SPCConvectiveDiscussions = []weatherdata.ConvectiveOutlookDiscussion{
+		spcDiscussion(1, "Mixed risk discussion", "Only wind is high.", "This discussion should not be emitted without categorical threshold.", "2026-05-29T08:30:00-05:00"),
+	}
+
+	output, err := registry.BuildModule(ctx, module.ConfigItem{ID: module.SPCConvectiveDiscussion})
+	if err != nil {
+		t.Fatalf("BuildModule() error = %v", err)
+	}
+	if output != nil {
+		t.Fatalf("output = %#v, want mixed day omitted when categorical outlook is below threshold", output)
+	}
+}
+
+func TestSPCConvectiveDiscussionModuleIncludesOnlyQualifyingDays(t *testing.T) {
+	registry := MustDefaultModuleRegistry()
+	rank2 := 2
+	rank4 := 4
+	ctx := testModuleContext()
+	ctx.Resolved.ValidPeriod.Start = mustParseModuleTime("2026-05-30T00:00:00-05:00")
+	ctx.Resolved.ValidPeriod.End = mustParseModuleTime("2026-05-31T00:00:00-05:00")
+	day1Outlook := weatherdata.ConvectiveOutlook{
+		ID:           "day1-marginal",
+		Day:          1,
+		OutlookType:  "categorical",
+		Label:        "MRGL",
+		LabelText:    "Marginal Risk",
+		SeverityRank: &rank2,
+		ValidFrom:    mustParseModuleTime("2026-05-29T11:00:00-05:00"),
+		ValidTo:      mustParseModuleTime("2026-05-30T07:00:00-05:00"),
+	}
+	day2Outlook := weatherdata.ConvectiveOutlook{
+		ID:           "day2-enhanced",
+		Day:          2,
+		OutlookType:  "categorical",
+		Label:        "ENH",
+		LabelText:    "Enhanced Risk",
+		SeverityRank: &rank4,
+		ValidFrom:    mustParseModuleTime("2026-05-30T07:00:00-05:00"),
+		ValidTo:      mustParseModuleTime("2026-05-31T07:00:00-05:00"),
+	}
+	ctx.Collected.SPCConvectiveOutlooks = &weatherdata.ConvectiveOutlookRun{
+		Outlooks: []weatherdata.ConvectiveOutlook{day1Outlook, day2Outlook},
+	}
+	ctx.Derived.SPCConvectiveOutlooks = []weatherdata.ConvectiveOutlook{day1Outlook, day2Outlook}
+	ctx.Derived.SPCConvectiveDiscussions = []weatherdata.ConvectiveOutlookDiscussion{
+		spcDiscussion(1, "Day 1 regional discussion", "Marginal risk discussion.", "Day 1 text should not be emitted.", "2026-05-29T08:30:00-05:00"),
+		spcDiscussion(2, "Day 2 regional discussion", "Enhanced risk discussion.", "Day 2 text should be emitted.", "2026-05-30T08:30:00-05:00"),
+	}
+
+	output, err := registry.BuildModule(ctx, module.ConfigItem{ID: module.SPCConvectiveDiscussion})
+	if err != nil {
+		t.Fatalf("BuildModule() error = %v", err)
+	}
+	value := moduleValue[SPCConvectiveDiscussionModule](t, output)
+	if len(value.Discussions) != 1 {
+		t.Fatalf("Discussions = %#v, want only the qualifying day discussion", value.Discussions)
+	}
+	if value.Discussions[0].Day != 2 || value.Discussions[0].Headline != "Day 2 regional discussion" {
+		t.Fatalf("Discussions[0] = %#v, want day 2 discussion only", value.Discussions[0])
+	}
+	if value.Discussions[0].PeriodBegins != "2026-05-30 at 7:00 AM" || value.Discussions[0].PeriodEnds != "2026-05-31 at 7:00 AM" {
+		t.Fatalf("Period = %q/%q, want qualifying day 2 outlook period", value.Discussions[0].PeriodBegins, value.Discussions[0].PeriodEnds)
+	}
+}
+
+func TestSPCConvectiveDiscussionModuleOmitsNonOverlappingQualifyingOutlook(t *testing.T) {
+	registry := MustDefaultModuleRegistry()
+	rank := 5
+	ctx := testModuleContext()
+	outlook := weatherdata.ConvectiveOutlook{
+		ID:           "day2-enhanced",
+		Day:          2,
+		OutlookType:  "categorical",
+		Label:        "ENH",
+		LabelText:    "Enhanced Risk",
+		SeverityRank: &rank,
+		ValidFrom:    mustParseModuleTime("2026-05-30T07:00:00-05:00"),
+		ValidTo:      mustParseModuleTime("2026-05-31T07:00:00-05:00"),
+	}
+	ctx.Collected.SPCConvectiveOutlooks = &weatherdata.ConvectiveOutlookRun{
+		Outlooks: []weatherdata.ConvectiveOutlook{outlook},
+	}
+	ctx.Derived.SPCConvectiveOutlooks = []weatherdata.ConvectiveOutlook{outlook}
+	ctx.Derived.SPCConvectiveDiscussions = []weatherdata.ConvectiveOutlookDiscussion{
+		spcDiscussion(2, "Day 2 regional discussion", "Enhanced risk discussion.", "Day 2 text should not be emitted for today.", "2026-05-30T08:30:00-05:00"),
+	}
+
+	output, err := registry.BuildModule(ctx, module.ConfigItem{ID: module.SPCConvectiveDiscussion})
+	if err != nil {
+		t.Fatalf("BuildModule() error = %v", err)
+	}
+	if output != nil {
+		t.Fatalf("output = %#v, want non-overlapping discussion omitted", output)
+	}
+}
+
+func TestSPCConvectiveDiscussionModuleOmitsMissingDiscussionText(t *testing.T) {
+	registry := MustDefaultModuleRegistry()
+	ctx := spcConvectiveDiscussionContext(3, []weatherdata.ConvectiveOutlookDiscussion{
+		{Day: 1, Headline: "Severe storms possible", Summary: "Scattered severe storms are possible.", UpdatedAt: ptrModuleTime("2026-05-29T08:30:00-05:00")},
+	})
+
+	output, err := registry.BuildModule(ctx, module.ConfigItem{ID: module.SPCConvectiveDiscussion})
+	if err != nil {
+		t.Fatalf("BuildModule() error = %v", err)
+	}
+	if output != nil {
+		t.Fatalf("output = %#v, want omitted when discussion text is missing", output)
+	}
+}
+
+func TestSPCConvectiveDiscussionModuleOmitsMissingSource(t *testing.T) {
+	registry := MustDefaultModuleRegistry()
+	ctx := testModuleContext()
+	ctx.Collected.SPCConvectiveOutlooks = nil
+	ctx.Derived.SPCConvectiveOutlooks = nil
+	ctx.Derived.SPCConvectiveDiscussions = nil
+
+	output, err := registry.BuildModule(ctx, module.ConfigItem{ID: module.SPCConvectiveDiscussion})
+	if err != nil {
+		t.Fatalf("BuildModule() error = %v", err)
+	}
+	if output != nil {
+		t.Fatalf("output = %#v, want omitted for missing optional source", output)
+	}
+}
+
+func spcConvectiveDiscussionContext(rank int, discussions []weatherdata.ConvectiveOutlookDiscussion) ModuleContext {
+	ctx := testModuleContext()
+	outlook := weatherdata.ConvectiveOutlook{
+		ID:           "day1-categorical",
+		Day:          1,
+		OutlookType:  "categorical",
+		Label:        "SLGT",
+		LabelText:    "Slight Risk",
+		SeverityRank: &rank,
+		ValidFrom:    mustParseModuleTime("2026-05-29T11:00:00-05:00"),
+		ValidTo:      mustParseModuleTime("2026-05-30T07:00:00-05:00"),
+	}
+	ctx.Collected.SPCConvectiveOutlooks = &weatherdata.ConvectiveOutlookRun{
+		AsOf:     ptrModuleTime("2026-05-29T08:00:00-05:00"),
+		IssuedAt: ptrModuleTime("2026-05-29T07:45:00-05:00"),
+		Outlooks: []weatherdata.ConvectiveOutlook{outlook},
+	}
+	ctx.Derived.SPCConvectiveOutlooks = []weatherdata.ConvectiveOutlook{outlook}
+	ctx.Derived.SPCConvectiveDiscussions = discussions
+	return ctx
+}
+
+func spcDiscussion(day int, headline string, summary string, discussion string, updatedAt string) weatherdata.ConvectiveOutlookDiscussion {
+	return weatherdata.ConvectiveOutlookDiscussion{
+		Day:        day,
+		Headline:   headline,
+		Summary:    summary,
+		Discussion: discussion,
+		UpdatedAt:  ptrModuleTime(updatedAt),
+	}
+}
+
+func ptrModuleTime(value string) *time.Time {
+	parsed := mustParseModuleTime(value)
+	return &parsed
+}

internal/briefing/spc_convective_outlooks_module.go

@@ -0,0 +1,92 @@
+package briefing
+
+import (
+	"time"
+
+	"gitea.maximumdirect.net/eric/weatherreporter/internal/module"
+	"gitea.maximumdirect.net/eric/weatherreporter/internal/timeutil"
+	"gitea.maximumdirect.net/eric/weatherreporter/internal/weatherdata"
+)
+
+type SPCConvectiveOutlooksModule struct {
+	Checked      bool                         `json:"checked"`
+	AsOf         string                       `json:"as_of,omitempty"`
+	IssuedAt     string                       `json:"issued_at,omitempty"`
+	LocationID   string                       `json:"location_id,omitempty"`
+	LocationName string                       `json:"location_name,omitempty"`
+	OutlookCount int                          `json:"outlook_count"`
+	Outlooks     []SPCConvectiveOutlookRecord `json:"outlooks,omitempty"`
+}
+
+type SPCConvectiveOutlookRecord struct {
+	Day              int    `json:"day,omitempty"`
+	OutlookType      string `json:"outlook_type,omitempty"`
+	Label            string `json:"label,omitempty"`
+	LabelText        string `json:"label_text,omitempty"`
+	PeriodBegins     string `json:"period_begins,omitempty"`
+	PeriodEnds       string `json:"period_ends,omitempty"`
+	IssuedAt         string `json:"issued_at,omitempty"`
+	ContainsLocation bool   `json:"contains_location"`
+	ImageURL         string `json:"image_url,omitempty"`
+}
+
+func buildSPCConvectiveOutlooksModule(ctx ModuleContext, _ any) (*module.Output, error) {
+	value := SPCConvectiveOutlooksModule{}
+	run := ctx.Collected.SPCConvectiveOutlooks
+	if run != nil {
+		value.Checked = true
+		value.AsOf = friendlyOptionalTime(run.AsOf, ctx.Timezone)
+		value.IssuedAt = friendlyOptionalTime(run.IssuedAt, ctx.Timezone)
+		value.LocationID = run.LocationID
+		value.LocationName = run.LocationName
+	}
+	source, ok := sourceByName(ctx.Collected.SourceProvenance, string(module.SPCConvectiveOutlooks))
+	if value.Checked && value.AsOf == "" && ok && !source.FetchedAt.IsZero() {
+		value.AsOf = friendlyDateTimeLabel(source.FetchedAt, ctx.Timezone)
+	}
+	if value.Checked && value.IssuedAt == "" && ok {
+		value.IssuedAt = friendlyOptionalTime(source.IssuedAt, ctx.Timezone)
+	}
+
+	value.Outlooks = spcConvectiveOutlookRecords(ctx.Derived.SPCConvectiveOutlooks, ctx.Resolved.ValidPeriod, ctx.Timezone)
+	value.OutlookCount = len(value.Outlooks)
+	return &module.Output{ID: module.SPCConvectiveOutlooks, StanzaName: string(module.SPCConvectiveOutlooks), Value: value}, nil
+}
+
+func spcConvectiveOutlookRecords(outlooks []weatherdata.ConvectiveOutlook, reportPeriod timeutil.Period, timezone string) []SPCConvectiveOutlookRecord {
+	records := make([]SPCConvectiveOutlookRecord, 0, len(outlooks))
+	for _, outlook := range outlooks {
+		outlookPeriod := timeutil.Period{Start: outlook.ValidFrom, End: outlook.ValidTo}
+		if !outlookPeriod.IsValid() || !outlookPeriod.Overlaps(reportPeriod) {
+			continue
+		}
+		records = append(records, SPCConvectiveOutlookRecord{
+			Day:              outlook.Day,
+			OutlookType:      outlook.OutlookType,
+			Label:            outlook.Label,
+			LabelText:        outlook.LabelText,
+			PeriodBegins:     friendlyPeriodBeginsLabel(outlookPeriod, timezone),
+			PeriodEnds:       friendlyPeriodEndsLabel(outlookPeriod, timezone),
+			IssuedAt:         friendlyOptionalTime(outlook.IssuedAt, timezone),
+			ContainsLocation: outlook.ContainsLocation,
+			ImageURL:         outlook.ImageURL,
+		})
+	}
+	return records
+}
+
+func friendlyOptionalTime(value *time.Time, timezone string) string {
+	if value == nil {
+		return ""
+	}
+	return friendlyDateTimeLabel(*value, timezone)
+}
+
+func sourceByName(sources []weatherdata.Source, name string) (weatherdata.Source, bool) {
+	for _, source := range sources {
+		if source.Name == name {
+			return source, true
+		}
+	}
+	return weatherdata.Source{}, false
+}

internal/briefing/spc_convective_outlooks_module_test.go

@@ -0,0 +1,169 @@
+package briefing
+
+import (
+	"encoding/json"
+	"strings"
+	"testing"
+
+	"gitea.maximumdirect.net/eric/weatherreporter/internal/module"
+	"gitea.maximumdirect.net/eric/weatherreporter/internal/weatherdata"
+)
+
+func TestSPCConvectiveOutlooksModuleBuildsPromptSafeRiskProduct(t *testing.T) {
+	registry := MustDefaultModuleRegistry()
+	ctx := testModuleContext()
+	rank := 3
+	asOf := mustParseModuleTime("2026-05-29T14:00:00Z")
+	issuedAt := mustParseModuleTime("2026-05-29T13:45:00Z")
+	expiresAt := mustParseModuleTime("2026-05-30T07:00:00-05:00")
+	outlook := weatherdata.ConvectiveOutlook{
+		ID:               "day1-categorical-slight",
+		Provider:         "spc",
+		Product:          "convective_outlook",
+		Day:              1,
+		OutlookType:      "categorical",
+		Label:            "SLGT",
+		LabelText:        "Slight Risk",
+		Forecaster:       "Smith",
+		SeverityRank:     &rank,
+		ValidFrom:        mustParseModuleTime("2026-05-29T11:00:00-05:00"),
+		ValidTo:          mustParseModuleTime("2026-05-30T07:00:00-05:00"),
+		IssuedAt:         &issuedAt,
+		ExpiresAt:        &expiresAt,
+		SourceURL:        "https://www.spc.noaa.gov/products/outlook/day1otlk.html",
+		ImageURL:         "https://www.spc.noaa.gov/products/outlook/day1probotlk_2000_torn.gif",
+		ContainsLocation: true,
+		Geometry:         json.RawMessage(`{"type":"Polygon","coordinates":[]}`),
+	}
+	ctx.Collected.SPCConvectiveOutlooks = &weatherdata.ConvectiveOutlookRun{
+		LocationID:   "nws-lsx-grid-90-74",
+		LocationName: "St. Louis, MO",
+		AsOf:         &asOf,
+		IssuedAt:     &issuedAt,
+		Outlooks:     []weatherdata.ConvectiveOutlook{outlook},
+	}
+	ctx.Derived.SPCConvectiveOutlooks = []weatherdata.ConvectiveOutlook{outlook}
+
+	output, err := registry.BuildModule(ctx, module.ConfigItem{ID: module.SPCConvectiveOutlooks})
+	if err != nil {
+		t.Fatalf("BuildModule() error = %v", err)
+	}
+	if output == nil || output.ID != module.SPCConvectiveOutlooks || output.StanzaName != "spc_convective_outlooks" {
+		t.Fatalf("output = %#v, want spc convective outlook output", output)
+	}
+	value := moduleValue[SPCConvectiveOutlooksModule](t, output)
+	if !value.Checked || value.OutlookCount != 1 || value.AsOf != "2026-05-29 at 9:00 AM" || value.IssuedAt != "2026-05-29 at 8:45 AM" {
+		t.Fatalf("SPCConvectiveOutlooksModule = %#v, want checked source timing and one outlook", value)
+	}
+	if value.LocationID != "nws-lsx-grid-90-74" || value.LocationName != "St. Louis, MO" {
+		t.Fatalf("source location = %q/%q, want Weather API location", value.LocationID, value.LocationName)
+	}
+	if len(value.Outlooks) != 1 {
+		t.Fatalf("Outlooks length = %d, want 1", len(value.Outlooks))
+	}
+	got := value.Outlooks[0]
+	if got.Day != 1 || got.OutlookType != "categorical" || got.Label != "SLGT" || got.LabelText != "Slight Risk" {
+		t.Fatalf("outlook = %#v, want categorical slight risk fields", got)
+	}
+	if got.PeriodBegins != "2026-05-29 at 11:00 AM" || got.PeriodEnds != "2026-05-30 at 7:00 AM" || got.IssuedAt != "2026-05-29 at 8:45 AM" {
+		t.Fatalf("outlook times = %#v, want friendly local labels", got)
+	}
+	if !got.ContainsLocation || got.ImageURL == "" {
+		t.Fatalf("outlook = %#v, want location flag and image URL", got)
+	}
+	data, err := json.Marshal(output.Value)
+	if err != nil {
+		t.Fatalf("Marshal() error = %v", err)
+	}
+	text := string(data)
+	for _, field := range []string{"checked", "as_of", "issued_at", "location_id", "location_name", "outlook_count", "outlooks", "period_begins", "period_ends", "contains_location", "image_url"} {
+		if !strings.Contains(text, field) {
+			t.Fatalf("json = %s, want field %s", text, field)
+		}
+	}
+	for _, omitted := range []string{"geometry", "coordinates", "forecaster", "provider", "severity_rank", "expires_at", "source_url", "valid_start", "valid_end", `"period":`} {
+		if strings.Contains(text, omitted) {
+			t.Fatalf("json = %s, want prompt-safe outlook without %s", text, omitted)
+		}
+	}
+}
+
+func TestSPCConvectiveOutlooksModuleSkipsNonOverlappingOutlooks(t *testing.T) {
+	registry := MustDefaultModuleRegistry()
+	ctx := testModuleContext()
+	rank := 5
+	outlook := weatherdata.ConvectiveOutlook{
+		ID:               "tomorrow-enhanced",
+		Day:              2,
+		OutlookType:      "categorical",
+		Label:            "ENH",
+		LabelText:        "Enhanced Risk",
+		SeverityRank:     &rank,
+		ValidFrom:        mustParseModuleTime("2026-05-30T07:00:00-05:00"),
+		ValidTo:          mustParseModuleTime("2026-05-31T07:00:00-05:00"),
+		ContainsLocation: true,
+	}
+	ctx.Collected.SPCConvectiveOutlooks = &weatherdata.ConvectiveOutlookRun{
+		AsOf:     ptrModuleTime("2026-05-29T14:00:00Z"),
+		Outlooks: []weatherdata.ConvectiveOutlook{outlook},
+	}
+	ctx.Derived.SPCConvectiveOutlooks = []weatherdata.ConvectiveOutlook{outlook}
+
+	output, err := registry.BuildModule(ctx, module.ConfigItem{ID: module.SPCConvectiveOutlooks})
+	if err != nil {
+		t.Fatalf("BuildModule() error = %v", err)
+	}
+	value := moduleValue[SPCConvectiveOutlooksModule](t, output)
+	if value.OutlookCount != 0 || len(value.Outlooks) != 0 {
+		t.Fatalf("value = %#v, want non-overlapping outlook omitted", value)
+	}
+}
+
+func TestSPCConvectiveOutlooksModuleBuildsCheckedEmptyStanza(t *testing.T) {
+	registry := MustDefaultModuleRegistry()
+	ctx := testModuleContext()
+	asOf := mustParseModuleTime("2026-05-29T14:00:00Z")
+	ctx.Collected.SPCConvectiveOutlooks = &weatherdata.ConvectiveOutlookRun{
+		LocationID:   "nws-lsx-grid-90-74",
+		LocationName: "St. Louis, MO",
+		AsOf:         &asOf,
+		Outlooks:     []weatherdata.ConvectiveOutlook{},
+	}
+	ctx.Derived.SPCConvectiveOutlooks = []weatherdata.ConvectiveOutlook{}
+
+	output, err := registry.BuildModule(ctx, module.ConfigItem{ID: module.SPCConvectiveOutlooks})
+	if err != nil {
+		t.Fatalf("BuildModule() error = %v", err)
+	}
+	value := moduleValue[SPCConvectiveOutlooksModule](t, output)
+	if !value.Checked || value.OutlookCount != 0 || len(value.Outlooks) != 0 {
+		t.Fatalf("checked empty value = %#v, want checked source with no retained outlooks", value)
+	}
+	data, err := json.Marshal(output.Value)
+	if err != nil {
+		t.Fatalf("Marshal() error = %v", err)
+	}
+	if strings.Contains(string(data), "outlooks") {
+		t.Fatalf("json = %s, want empty outlook list omitted", string(data))
+	}
+}
+
+func TestSPCConvectiveOutlooksModuleBuildsUncheckedStanzaForMissingSource(t *testing.T) {
+	registry := MustDefaultModuleRegistry()
+	ctx := testModuleContext()
+	ctx.Collected.SPCConvectiveOutlooks = nil
+	ctx.Collected.SourceProvenance = []weatherdata.Source{{
+		Name:    string(module.SPCConvectiveOutlooks),
+		Missing: true,
+	}}
+	ctx.Derived.SPCConvectiveOutlooks = nil
+
+	output, err := registry.BuildModule(ctx, module.ConfigItem{ID: module.SPCConvectiveOutlooks})
+	if err != nil {
+		t.Fatalf("BuildModule() error = %v", err)
+	}
+	value := moduleValue[SPCConvectiveOutlooksModule](t, output)
+	if value.Checked || value.OutlookCount != 0 || value.AsOf != "" || value.IssuedAt != "" {
+		t.Fatalf("missing source value = %#v, want unchecked empty stanza", value)
+	}
+}

internal/briefing/summary_helpers.go

@@ -7,6 +7,7 @@ import (
 	"strings"
 
 	"gitea.maximumdirect.net/eric/weatherreporter/internal/forecast"
+	"gitea.maximumdirect.net/eric/weatherreporter/internal/timeutil"
 )
 
 type OutdoorWindows struct {
@@ -16,8 +17,7 @@ type OutdoorWindows struct {
 
 type OutdoorWindow struct {
 	Daypart string
-	Start   string
-	End     string
+	Period  timeutil.Period
 	Reasons []string
 	Score   float64
 }
@@ -190,8 +190,7 @@ func scoreOutdoorWindow(daypart forecast.DaypartSummary) OutdoorWindow {
 	}
 	return OutdoorWindow{
 		Daypart: daypart.Name,
-		Start:   daypart.Period.Start.Format("15:04"),
-		End:     daypart.Period.End.Format("15:04"),
+		Period:  daypart.Period,
 		Reasons: dedupe(reasons),
 		Score:   math.Round(score*10) / 10,
 	}

internal/briefing/weather_story_module.go

@@ -4,20 +4,21 @@ import (
 	"time"
 
 	"gitea.maximumdirect.net/eric/weatherreporter/internal/module"
+	"gitea.maximumdirect.net/eric/weatherreporter/internal/timeutil"
 )
 
 type WeatherStoryModule struct {
-	Available   bool       `json:"available"`
-	OfficeID    string     `json:"office_id,omitempty"`
-	StartTime   time.Time  `json:"start_time"`
-	EndTime     time.Time  `json:"end_time"`
-	UpdatedAt   *time.Time `json:"updated_at,omitempty"`
-	Title       string     `json:"title,omitempty"`
-	Description string     `json:"description,omitempty"`
-	AltText     string     `json:"alt_text,omitempty"`
-	Priority    bool       `json:"priority"`
-	Order       int        `json:"order"`
-	DownloadURL string     `json:"download_url,omitempty"`
+	Available    bool       `json:"available"`
+	OfficeID     string     `json:"office_id,omitempty"`
+	PeriodBegins string     `json:"period_begins,omitempty"`
+	PeriodEnds   string     `json:"period_ends,omitempty"`
+	UpdatedAt    *time.Time `json:"updated_at,omitempty"`
+	Title        string     `json:"title,omitempty"`
+	Description  string     `json:"description,omitempty"`
+	AltText      string     `json:"alt_text,omitempty"`
+	Priority     bool       `json:"priority"`
+	Order        int        `json:"order"`
+	DownloadURL  string     `json:"download_url,omitempty"`
 }
 
 func buildWeatherStoryModule(ctx ModuleContext, _ any) (*module.Output, error) {
@@ -25,18 +26,19 @@ func buildWeatherStoryModule(ctx ModuleContext, _ any) (*module.Output, error) {
 	if story == nil {
 		return nil, nil
 	}
+	period := timeutil.Period{Start: story.StartTime, End: story.EndTime}
 	value := WeatherStoryModule{
-		Available:   true,
-		OfficeID:    story.OfficeID,
-		StartTime:   story.StartTime,
-		EndTime:     story.EndTime,
-		UpdatedAt:   copyTime(story.UpdatedAt),
-		Title:       story.Title,
-		Description: story.Description,
-		AltText:     story.AltText,
-		Priority:    story.Priority,
-		Order:       story.Order,
-		DownloadURL: story.DownloadURL,
+		Available:    true,
+		OfficeID:     story.OfficeID,
+		PeriodBegins: friendlyPeriodBeginsLabel(period, ctx.Timezone),
+		PeriodEnds:   friendlyPeriodEndsLabel(period, ctx.Timezone),
+		UpdatedAt:    copyTime(story.UpdatedAt),
+		Title:        story.Title,
+		Description:  story.Description,
+		AltText:      story.AltText,
+		Priority:     story.Priority,
+		Order:        story.Order,
+		DownloadURL:  story.DownloadURL,
 	}
 	return &module.Output{ID: module.WeatherStory, StanzaName: "weather_story", Value: value}, nil
 }

internal/changes/daily.go

@@ -84,7 +84,8 @@ type dailySummaryStanza struct {
 
 type daypartSummaryStanza struct {
 	Date           string `json:"date,omitempty"`
-	Period         string `json:"period,omitempty"`
+	PeriodBegins   string `json:"period_begins,omitempty"`
+	PeriodEnds     string `json:"period_ends,omitempty"`
 	TempRangeF     string `json:"temp_range_f,omitempty"`
 	MaxPopPercent  *int   `json:"max_pop_percent,omitempty"`
 	MaxPopTime     string `json:"max_pop_time,omitempty"`

internal/changes/daily_test.go

@@ -96,7 +96,13 @@ func dailySnapshot(t *testing.T, low int, high int, precip int, precipTime strin
 			DailyPrecipitationProbability: &precip,
 		}},
 		module.Output{ID: module.DerivedDaypartSummaries, StanzaName: "derived_daypart_summaries", Value: map[string]daypartSummaryStanza{
-			"morning": {Date: "2026-05-29", Period: "2026-05-29 at 6:00 AM to 2026-05-29 at 10:00 AM", TempRangeF: "60-70", Snow: snow},
+			"morning": {
+				Date:         "2026-05-29",
+				PeriodBegins: "2026-05-29 at 6:00 AM",
+				PeriodEnds:   "2026-05-29 at 10:00 AM",
+				TempRangeF:   "60-70",
+				Snow:         snow,
+			},
 		}},
 		module.Output{ID: module.PrecipTiming, StanzaName: "precip_timing", Value: precipTimingStanza{MaxPopPercent: &precip, MaxPopTime: precipTime}},
 		module.Output{ID: module.AlertDigest, StanzaName: "alert_digest", Value: alertDigestStanza{Relevant: relevant}},

internal/changes/three_day_test.go

@@ -32,7 +32,8 @@ func outlookSnapshot(t *testing.T, date string, tempRange string, precip int, pr
 	return snapshot(t, module.Output{ID: module.DerivedDaypartSummaries, StanzaName: "derived_daypart_summaries", Value: map[string]daypartSummaryStanza{
 		date + "_morning": {
 			Date:          date,
-			Period:        date + " at 6:00 AM to " + date + " at 10:00 AM",
+			PeriodBegins:  date + " at 6:00 AM",
+			PeriodEnds:    date + " at 10:00 AM",
 			TempRangeF:    tempRange,
 			MaxPopPercent: &precip,
 			MaxPopTime:    precipTime,

internal/cli/root_test.go

@@ -996,6 +996,8 @@ func dailyServer(t *testing.T) *httptest.Server {
 			_, _ = w.Write([]byte(`{"data":{"product":"discussion","issuedAt":"2026-05-29T09:25:00-05:00","keyMessages":["Storms are most likely during the morning."]}}`))
 		case "/weatherstories/latest":
 			_, _ = w.Write([]byte(`{"data":{"officeId":"LSX","startTime":"2026-05-30T08:46:00Z","endTime":"2026-05-31T11:00:00Z","updatedAt":"2026-05-30T09:00:34Z","title":"Several Chances for Rain Through Monday","description":"Scattered showers and thunderstorms remain possible.","altText":"Forecast weather story graphic.","priority":false,"order":1,"downloadUrl":"https://api.weather.gov/offices/LSX/weatherstories/download/test"}}`))
+		case "/outlooks/convective":
+			_, _ = w.Write([]byte(`{"data":{"asOf":"2026-05-29T16:00:00Z","outlooks":[],"discussions":[]}}`))
 		default:
 			http.NotFound(w, r)
 		}

internal/config/config_test.go

@@ -85,7 +85,7 @@ func TestLoadExampleConfig(t *testing.T) {
 	if cfg.Location.ID != "home" || cfg.Location.Name != "Brentwood" || cfg.Location.Region != "St. Louis Metro" {
 		t.Fatalf("Location = %#v, want example location", cfg.Location)
 	}
-	if cfg.Notify.Distributor.PipelineIDTemplate != "weatherreporter.{artifact_group}" {
+	if cfg.Notify.Distributor.PipelineIDTemplate != "weatherreporter.{report_id}" {
 		t.Fatalf("PipelineIDTemplate = %q, want example pipeline template", cfg.Notify.Distributor.PipelineIDTemplate)
 	}
 	if len(cfg.Notify.Distributor.ReportPathTemplates) != 1 {
@@ -126,10 +126,13 @@ reports:
     deterministic_modules:
       - metadata
       - current_conditions
+      - alert_digest
+      - spc_convective_outlooks
       - id: area_forecast_discussion
         options:
           sections:
             - short_term
+      - spc_convective_discussion
 `)
 
 	cfg, err := LoadFile(path)
@@ -138,15 +141,20 @@ reports:
 	}
 	overrides := cfg.ReportModuleOverrides()
 	items := overrides[report.DailyToday]
-	if len(items) != 3 {
-		t.Fatalf("daily override length = %d, want 3", len(items))
+	if len(items) != 6 {
+		t.Fatalf("daily override length = %d, want 6", len(items))
 	}
-	if items[0].ID != module.Metadata || items[1].ID != module.CurrentConditions || items[2].ID != module.AreaForecastDiscussion {
+	if items[0].ID != module.Metadata ||
+		items[1].ID != module.CurrentConditions ||
+		items[2].ID != module.AlertDigest ||
+		items[3].ID != module.SPCConvectiveOutlooks ||
+		items[4].ID != module.AreaForecastDiscussion ||
+		items[5].ID != module.SPCConvectiveDiscussion {
 		t.Fatalf("daily override = %#v, want configured module order", items)
 	}
-	options, ok := items[2].Options.(module.AreaForecastDiscussionOptions)
+	options, ok := items[4].Options.(module.AreaForecastDiscussionOptions)
 	if !ok {
-		t.Fatalf("AFD options type = %T, want AreaForecastDiscussionOptions", items[2].Options)
+		t.Fatalf("AFD options type = %T, want AreaForecastDiscussionOptions", items[4].Options)
 	}
 	if strings.Join(options.Sections, ",") != "short_term" {
 		t.Fatalf("AFD sections = %#v, want short_term", options.Sections)
@@ -599,7 +607,7 @@ func TestLoadFileLoadsSecretsBeforeReturningNotifyConfig(t *testing.T) {
 		"notify:\n" +
 		"  distributor:\n" +
 		"    enabled: true\n" +
-		"    pipeline_id_template: weatherreporter.{artifact_group}\n"
+		"    pipeline_id_template: weatherreporter.{report_id}\n"
 	if err := os.WriteFile(path, []byte(configYAML), 0o600); err != nil {
 		t.Fatalf("write config fixture: %v", err)
 	}

internal/facts/facts.go

@@ -3,6 +3,7 @@ package facts
 
 import (
 	"fmt"
+	"sort"
 	"time"
 
 	"gitea.maximumdirect.net/eric/weatherreporter/internal/forecast"
@@ -12,15 +13,16 @@ import (
 )
 
 type CollectedFacts struct {
-	FetchedAt    time.Time
-	Observation  *weatherdata.Observation
-	Current      *weatherdata.Current
-	Hourly       *weatherdata.ForecastRun
-	Narrative    *weatherdata.ForecastRun
-	Alerts       *weatherdata.AlertRun
-	Discussion   *weatherdata.Discussion
-	Daily        *weatherdata.ForecastRun
-	WeatherStory *weatherdata.WeatherStory
+	FetchedAt             time.Time
+	Observation           *weatherdata.Observation
+	Current               *weatherdata.Current
+	Hourly                *weatherdata.ForecastRun
+	Narrative             *weatherdata.ForecastRun
+	Alerts                *weatherdata.AlertRun
+	Discussion            *weatherdata.Discussion
+	Daily                 *weatherdata.ForecastRun
+	WeatherStory          *weatherdata.WeatherStory
+	SPCConvectiveOutlooks *weatherdata.ConvectiveOutlookRun
 
 	SourceProvenance []weatherdata.Source
 	SourceWarnings   []weatherdata.SourceWarning
@@ -31,33 +33,35 @@ func BuildCollected(bundle *weatherdata.Bundle) CollectedFacts {
 		return CollectedFacts{}
 	}
 	return CollectedFacts{
-		FetchedAt:        bundle.FetchedAt,
-		Observation:      bundle.Observation,
-		Current:          bundle.Current,
-		Hourly:           bundle.Hourly,
-		Narrative:        bundle.Narrative,
-		Alerts:           bundle.Alerts,
-		Discussion:       bundle.Discussion,
-		Daily:            bundle.Daily,
-		WeatherStory:     bundle.WeatherStory,
-		SourceProvenance: append([]weatherdata.Source(nil), bundle.Sources...),
-		SourceWarnings:   append([]weatherdata.SourceWarning(nil), bundle.Warnings...),
+		FetchedAt:             bundle.FetchedAt,
+		Observation:           bundle.Observation,
+		Current:               bundle.Current,
+		Hourly:                bundle.Hourly,
+		Narrative:             bundle.Narrative,
+		Alerts:                bundle.Alerts,
+		Discussion:            bundle.Discussion,
+		Daily:                 bundle.Daily,
+		WeatherStory:          bundle.WeatherStory,
+		SPCConvectiveOutlooks: bundle.SPCConvectiveOutlooks,
+		SourceProvenance:      append([]weatherdata.Source(nil), bundle.Sources...),
+		SourceWarnings:        append([]weatherdata.SourceWarning(nil), bundle.Warnings...),
 	}
 }
 
 func (f CollectedFacts) Bundle() *weatherdata.Bundle {
 	return &weatherdata.Bundle{
-		FetchedAt:    f.FetchedAt,
-		Observation:  f.Observation,
-		Current:      f.Current,
-		Hourly:       f.Hourly,
-		Narrative:    f.Narrative,
-		Alerts:       f.Alerts,
-		Discussion:   f.Discussion,
-		Daily:        f.Daily,
-		WeatherStory: f.WeatherStory,
-		Sources:      append([]weatherdata.Source(nil), f.SourceProvenance...),
-		Warnings:     append([]weatherdata.SourceWarning(nil), f.SourceWarnings...),
+		FetchedAt:             f.FetchedAt,
+		Observation:           f.Observation,
+		Current:               f.Current,
+		Hourly:                f.Hourly,
+		Narrative:             f.Narrative,
+		Alerts:                f.Alerts,
+		Discussion:            f.Discussion,
+		Daily:                 f.Daily,
+		WeatherStory:          f.WeatherStory,
+		SPCConvectiveOutlooks: f.SPCConvectiveOutlooks,
+		Sources:               append([]weatherdata.Source(nil), f.SourceProvenance...),
+		Warnings:              append([]weatherdata.SourceWarning(nil), f.SourceWarnings...),
 	}
 }
 
@@ -73,6 +77,8 @@ type DerivedFacts struct {
 	ValidPeriodNarrativePeriods []weatherdata.ForecastPeriod
 	ValidPeriodDailyPeriods     []weatherdata.ForecastPeriod
 	AlertOverlaps               []forecast.AlertOverlap
+	SPCConvectiveOutlooks       []weatherdata.ConvectiveOutlook
+	SPCConvectiveDiscussions    []weatherdata.ConvectiveOutlookDiscussion
 	DailySummaries              []forecast.DailySummary
 	DaypartSummaries            []forecast.DaypartSummary
 	PrecipTiming                forecast.PrecipTiming
@@ -96,11 +102,14 @@ func BuildDerived(req BuildDerivedRequest) (DerivedFacts, error) {
 	}
 	bundle := req.Collected.Bundle()
 	period := req.Resolved.ValidPeriod
+	spcOutlooks, spcDiscussions := selectSPCConvectiveOutlooks(req.Collected.SPCConvectiveOutlooks, period)
 	derived := DerivedFacts{
 		ValidPeriodHourlyPeriods:    forecast.SelectHourlyPeriods(req.Collected.Hourly, period),
 		ValidPeriodNarrativePeriods: forecast.SelectHourlyPeriods(req.Collected.Narrative, period),
 		ValidPeriodDailyPeriods:     forecast.SelectHourlyPeriods(req.Collected.Daily, period),
 		AlertOverlaps:               forecast.AlertOverlaps(req.Collected.Alerts, period),
+		SPCConvectiveOutlooks:       spcOutlooks,
+		SPCConvectiveDiscussions:    spcDiscussions,
 	}
 	derived.PrecipTiming = forecast.BuildPrecipTiming(derived.ValidPeriodHourlyPeriods)
 
@@ -139,3 +148,81 @@ func collectDaypartSummaries(derived DerivedFacts) []forecast.DaypartSummary {
 	}
 	return out
 }
+
+func selectSPCConvectiveOutlooks(run *weatherdata.ConvectiveOutlookRun, period timeutil.Period) ([]weatherdata.ConvectiveOutlook, []weatherdata.ConvectiveOutlookDiscussion) {
+	if run == nil {
+		return nil, nil
+	}
+
+	outlooks := make([]weatherdata.ConvectiveOutlook, 0, len(run.Outlooks))
+	days := map[int]struct{}{}
+	for _, outlook := range run.Outlooks {
+		outlookPeriod := timeutil.Period{Start: outlook.ValidFrom, End: outlook.ValidTo}
+		if !outlookPeriod.IsValid() || !outlookPeriod.Overlaps(period) {
+			continue
+		}
+		outlooks = append(outlooks, outlook)
+		days[outlook.Day] = struct{}{}
+	}
+	sort.SliceStable(outlooks, func(i, j int) bool {
+		left := outlooks[i]
+		right := outlooks[j]
+		if left.Day != right.Day {
+			return left.Day < right.Day
+		}
+		if left.OutlookType != right.OutlookType {
+			return left.OutlookType < right.OutlookType
+		}
+		leftRank, leftRankOK := severityRank(left)
+		rightRank, rightRankOK := severityRank(right)
+		if leftRankOK != rightRankOK {
+			return leftRankOK
+		}
+		if leftRankOK && leftRank != rightRank {
+			return leftRank > rightRank
+		}
+		if !left.ValidFrom.Equal(right.ValidFrom) {
+			return left.ValidFrom.Before(right.ValidFrom)
+		}
+		if left.Label != right.Label {
+			return left.Label < right.Label
+		}
+		return left.ID < right.ID
+	})
+
+	discussions := make([]weatherdata.ConvectiveOutlookDiscussion, 0, len(run.Discussions))
+	for _, discussion := range run.Discussions {
+		if _, ok := days[discussion.Day]; ok {
+			discussions = append(discussions, discussion)
+		}
+	}
+	sort.SliceStable(discussions, func(i, j int) bool {
+		left := discussions[i]
+		right := discussions[j]
+		if left.Day != right.Day {
+			return left.Day < right.Day
+		}
+		if left.UpdatedAt != nil && right.UpdatedAt != nil && !left.UpdatedAt.Equal(*right.UpdatedAt) {
+			return left.UpdatedAt.Before(*right.UpdatedAt)
+		}
+		if (left.UpdatedAt != nil) != (right.UpdatedAt != nil) {
+			return left.UpdatedAt != nil
+		}
+		if left.Headline != right.Headline {
+			return left.Headline < right.Headline
+		}
+		if left.Summary != right.Summary {
+			return left.Summary < right.Summary
+		}
+		return left.Discussion < right.Discussion
+	})
+
+	return outlooks, discussions
+}
+
+func severityRank(outlook weatherdata.ConvectiveOutlook) (int, bool) {
+	if outlook.SeverityRank == nil {
+		return 0, false
+	}
+	return *outlook.SeverityRank, true
+}

internal/facts/facts_test.go

@@ -2,6 +2,7 @@ package facts
 
 import (
 	"encoding/json"
+	"strings"
 	"testing"
 	"time"
 
@@ -16,14 +17,24 @@ func TestBuildCollectedCopiesBundleFactsAndKeepsSourcesSeparate(t *testing.T) {
 		FetchedAt: fetchedAt,
 		Current:   &weatherdata.Current{ConditionText: "Clear"},
 		Hourly:    &weatherdata.ForecastRun{Product: "hourly"},
-		Sources:   []weatherdata.Source{{Name: "hourly"}},
-		Warnings:  []weatherdata.SourceWarning{{Source: "discussion", Code: "missing_source"}},
+		SPCConvectiveOutlooks: &weatherdata.ConvectiveOutlookRun{
+			Product: "convective_outlook",
+			Outlooks: []weatherdata.ConvectiveOutlook{{
+				ID:    "day1-categorical-slight",
+				Label: "SLGT",
+			}},
+		},
+		Sources:  []weatherdata.Source{{Name: "hourly"}},
+		Warnings: []weatherdata.SourceWarning{{Source: "discussion", Code: "missing_source"}},
 	}
 
 	collected := BuildCollected(bundle)
 	if collected.FetchedAt != fetchedAt || collected.Current.ConditionText != "Clear" || collected.Hourly.Product != "hourly" {
 		t.Fatalf("CollectedFacts = %#v, want source facts copied from bundle", collected)
 	}
+	if collected.SPCConvectiveOutlooks == nil || collected.SPCConvectiveOutlooks.Outlooks[0].Label != "SLGT" {
+		t.Fatalf("SPCConvectiveOutlooks = %#v, want source copied from bundle", collected.SPCConvectiveOutlooks)
+	}
 	if len(collected.SourceProvenance) != 1 || collected.SourceProvenance[0].Name != "hourly" {
 		t.Fatalf("SourceProvenance = %#v, want hourly source", collected.SourceProvenance)
 	}
@@ -36,6 +47,11 @@ func TestBuildCollectedCopiesBundleFactsAndKeepsSourcesSeparate(t *testing.T) {
 	if collected.SourceProvenance[0].Name != "hourly" || collected.SourceWarnings[0].Source != "discussion" {
 		t.Fatalf("collected source slices changed after bundle mutation: %#v %#v", collected.SourceProvenance, collected.SourceWarnings)
 	}
+
+	roundTrip := collected.Bundle()
+	if roundTrip.SPCConvectiveOutlooks == nil || roundTrip.SPCConvectiveOutlooks.Outlooks[0].ID != "day1-categorical-slight" {
+		t.Fatalf("Bundle().SPCConvectiveOutlooks = %#v, want collected source restored", roundTrip.SPCConvectiveOutlooks)
+	}
 }
 
 func TestBuildDerivedDailySlicesDaypartsAndAlerts(t *testing.T) {
@@ -166,6 +182,108 @@ func TestBuildDerivedStormBuildsWindowSummary(t *testing.T) {
 	}
 }
 
+func TestBuildDerivedSelectsSPCConvectiveOutlooksByValidPeriod(t *testing.T) {
+	location := testLocation()
+	now := mustParse("2026-05-29T08:00:00-05:00")
+	bundle := testBundle(location)
+	bundle.SPCConvectiveOutlooks = testConvectiveOutlookRun(location)
+
+	tests := []struct {
+		name           string
+		resolved       report.Resolved
+		wantOutlookIDs []string
+		wantDiscussion []string
+	}{
+		{
+			name:           "daily today",
+			resolved:       resolveForTest(t, report.DailyToday, now, location),
+			wantOutlookIDs: []string{"fri-high", "fri-storm", "fri-low", "fri-missing-rank", "fri-probabilistic"},
+			wantDiscussion: []string{"day1 early", "day1 late"},
+		},
+		{
+			name:           "daily tomorrow",
+			resolved:       resolveForTest(t, report.DailyTomorrow, now, location),
+			wantOutlookIDs: []string{"sat-enhanced"},
+			wantDiscussion: []string{"day2"},
+		},
+		{
+			name:           "three day",
+			resolved:       resolveForTest(t, report.ThreeDay, now, location),
+			wantOutlookIDs: []string{"fri-high", "fri-storm", "fri-low", "fri-missing-rank", "fri-probabilistic", "sat-enhanced", "sun-slight"},
+			wantDiscussion: []string{"day1 early", "day1 late", "day2", "day3"},
+		},
+		{
+			name:           "weekend",
+			resolved:       resolveForTest(t, report.Weekend, now, location),
+			wantOutlookIDs: []string{"sat-enhanced", "sun-slight"},
+			wantDiscussion: []string{"day2", "day3"},
+		},
+		{
+			name:           "storm",
+			resolved:       resolveStormForTest(t, location),
+			wantOutlookIDs: []string{"fri-storm", "fri-low"},
+			wantDiscussion: []string{"day1 early", "day1 late"},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			derived, err := BuildDerived(BuildDerivedRequest{
+				Resolved:  tt.resolved,
+				Timezone:  location.String(),
+				Dayparts:  testDayparts(),
+				Collected: BuildCollected(bundle),
+			})
+			if err != nil {
+				t.Fatalf("BuildDerived() error = %v", err)
+			}
+			if got := outlookIDs(derived.SPCConvectiveOutlooks); strings.Join(got, ",") != strings.Join(tt.wantOutlookIDs, ",") {
+				t.Fatalf("SPCConvectiveOutlooks IDs = %#v, want %#v", got, tt.wantOutlookIDs)
+			}
+			if got := discussionHeadlines(derived.SPCConvectiveDiscussions); strings.Join(got, ",") != strings.Join(tt.wantDiscussion, ",") {
+				t.Fatalf("SPCConvectiveDiscussions = %#v, want %#v", got, tt.wantDiscussion)
+			}
+		})
+	}
+}
+
+func TestBuildDerivedSPCConvectiveOutlooksDistinguishesMissingAndCheckedEmpty(t *testing.T) {
+	location := testLocation()
+	resolved := resolveForTest(t, report.DailyToday, mustParse("2026-05-29T08:00:00-05:00"), location)
+	bundle := testBundle(location)
+	bundle.SPCConvectiveOutlooks = nil
+
+	derived, err := BuildDerived(BuildDerivedRequest{
+		Resolved:  resolved,
+		Timezone:  location.String(),
+		Dayparts:  testDayparts(),
+		Collected: BuildCollected(bundle),
+	})
+	if err != nil {
+		t.Fatalf("BuildDerived(missing source) error = %v", err)
+	}
+	if derived.SPCConvectiveOutlooks != nil || derived.SPCConvectiveDiscussions != nil {
+		t.Fatalf("missing source derived outlooks=%#v discussions=%#v, want nil slices", derived.SPCConvectiveOutlooks, derived.SPCConvectiveDiscussions)
+	}
+
+	bundle.SPCConvectiveOutlooks = &weatherdata.ConvectiveOutlookRun{Outlooks: []weatherdata.ConvectiveOutlook{}, Discussions: []weatherdata.ConvectiveOutlookDiscussion{}}
+	derived, err = BuildDerived(BuildDerivedRequest{
+		Resolved:  resolved,
+		Timezone:  location.String(),
+		Dayparts:  testDayparts(),
+		Collected: BuildCollected(bundle),
+	})
+	if err != nil {
+		t.Fatalf("BuildDerived(checked empty source) error = %v", err)
+	}
+	if derived.SPCConvectiveOutlooks == nil || len(derived.SPCConvectiveOutlooks) != 0 {
+		t.Fatalf("checked empty outlooks = %#v, want non-nil empty slice", derived.SPCConvectiveOutlooks)
+	}
+	if derived.SPCConvectiveDiscussions == nil || len(derived.SPCConvectiveDiscussions) != 0 {
+		t.Fatalf("checked empty discussions = %#v, want non-nil empty slice", derived.SPCConvectiveDiscussions)
+	}
+}
+
 func testBundle(location *time.Location) *weatherdata.Bundle {
 	return &weatherdata.Bundle{
 		FetchedAt: mustParse("2026-05-29T10:00:00Z"),
@@ -193,6 +311,65 @@ func testBundle(location *time.Location) *weatherdata.Bundle {
 	}
 }
 
+func testConvectiveOutlookRun(location *time.Location) *weatherdata.ConvectiveOutlookRun {
+	rank1 := 1
+	rank2 := 2
+	rank3 := 3
+	rank4 := 4
+	rank5 := 5
+	return &weatherdata.ConvectiveOutlookRun{
+		Outlooks: []weatherdata.ConvectiveOutlook{
+			convectiveOutlook(location, "mon-outside", 4, "categorical", "MDT", &rank5, "2026-06-01T00:00:00-05:00", "2026-06-02T00:00:00-05:00"),
+			convectiveOutlook(location, "sun-slight", 3, "categorical", "SLGT", &rank3, "2026-05-31T06:00:00-05:00", "2026-06-01T00:00:00-05:00"),
+			convectiveOutlook(location, "fri-low", 1, "categorical", "MRGL", &rank1, "2026-05-29T06:00:00-05:00", "2026-05-29T12:00:00-05:00"),
+			convectiveOutlook(location, "fri-missing-rank", 1, "categorical", "GEN", nil, "2026-05-29T08:00:00-05:00", "2026-05-29T10:00:00-05:00"),
+			convectiveOutlook(location, "sat-enhanced", 2, "categorical", "ENH", &rank4, "2026-05-30T01:00:00-05:00", "2026-05-30T12:00:00-05:00"),
+			convectiveOutlook(location, "fri-high", 1, "categorical", "SLGT", &rank3, "2026-05-29T07:00:00-05:00", "2026-05-29T11:00:00-05:00"),
+			convectiveOutlook(location, "fri-probabilistic", 1, "probabilistic", "5%", &rank2, "2026-05-29T05:00:00-05:00", "2026-05-29T10:00:00-05:00"),
+			convectiveOutlook(location, "fri-storm", 1, "categorical", "SLGT", &rank2, "2026-05-29T12:00:00-05:00", "2026-05-29T13:00:00-05:00"),
+		},
+		Discussions: []weatherdata.ConvectiveOutlookDiscussion{
+			{Day: 4, Headline: "day4", UpdatedAt: ptrTime(mustParse("2026-05-31T10:00:00-05:00"))},
+			{Day: 1, Headline: "day1 late", UpdatedAt: ptrTime(mustParse("2026-05-29T09:00:00-05:00"))},
+			{Day: 3, Headline: "day3", UpdatedAt: ptrTime(mustParse("2026-05-31T08:00:00-05:00"))},
+			{Day: 1, Headline: "day1 early", UpdatedAt: ptrTime(mustParse("2026-05-29T08:00:00-05:00"))},
+			{Day: 2, Headline: "day2", UpdatedAt: ptrTime(mustParse("2026-05-30T08:00:00-05:00"))},
+		},
+	}
+}
+
+func convectiveOutlook(location *time.Location, id string, day int, outlookType string, label string, rank *int, validFrom string, validTo string) weatherdata.ConvectiveOutlook {
+	return weatherdata.ConvectiveOutlook{
+		ID:           id,
+		Day:          day,
+		OutlookType:  outlookType,
+		Label:        label,
+		SeverityRank: rank,
+		ValidFrom:    mustParse(validFrom).In(location),
+		ValidTo:      mustParse(validTo).In(location),
+	}
+}
+
+func outlookIDs(outlooks []weatherdata.ConvectiveOutlook) []string {
+	out := make([]string, 0, len(outlooks))
+	for _, outlook := range outlooks {
+		out = append(out, outlook.ID)
+	}
+	return out
+}
+
+func discussionHeadlines(discussions []weatherdata.ConvectiveOutlookDiscussion) []string {
+	out := make([]string, 0, len(discussions))
+	for _, discussion := range discussions {
+		out = append(out, discussion.Headline)
+	}
+	return out
+}
+
+func ptrTime(value time.Time) *time.Time {
+	return &value
+}
+
 func hour(location *time.Location, start string, end string, text string, precip float64, gust float64) weatherdata.ForecastPeriod {
 	temperature := 70.0
 	return weatherdata.ForecastPeriod{

internal/module/module.go

@@ -21,6 +21,8 @@ const (
 	AlertDigest             ID = "alert_digest"
 	AreaForecastDiscussion  ID = "area_forecast_discussion"
 	WeatherStory            ID = "weather_story"
+	SPCConvectiveOutlooks   ID = "spc_convective_outlooks"
+	SPCConvectiveDiscussion ID = "spc_convective_discussion"
 	OutdoorWindows          ID = "outdoor_windows"
 	TomorrowPlanning        ID = "tomorrow_planning"
 )
@@ -105,19 +107,21 @@ func StanzaValue[T any](s Snapshot, name string) (T, bool, error) {
 type FactRequirement string
 
 const (
-	CollectedCurrentConditions      FactRequirement = "collected.current_conditions"
-	CollectedNarrativeForecast      FactRequirement = "collected.narrative_forecast"
-	CollectedHourlyForecast         FactRequirement = "collected.hourly_forecast"
-	CollectedAlerts                 FactRequirement = "collected.alerts"
-	CollectedDiscussion             FactRequirement = "collected.discussion"
-	CollectedWeatherStory           FactRequirement = "collected.weather_story"
-	CollectedSourceMetadata         FactRequirement = "collected.source_metadata"
-	RequiresDerivedHourlyPeriods    FactRequirement = "derived.hourly_periods"
-	RequiresDerivedNarrativePeriods FactRequirement = "derived.narrative_periods"
-	RequiresDerivedAlertOverlaps    FactRequirement = "derived.alert_overlaps"
-	RequiresDerivedDailySummaries   FactRequirement = "derived.daily_summaries"
-	RequiresDerivedDaypartSummaries FactRequirement = "derived.daypart_summaries"
-	RequiresDerivedPrecipTiming     FactRequirement = "derived.precip_timing"
+	CollectedCurrentConditions           FactRequirement = "collected.current_conditions"
+	CollectedNarrativeForecast           FactRequirement = "collected.narrative_forecast"
+	CollectedHourlyForecast              FactRequirement = "collected.hourly_forecast"
+	CollectedAlerts                      FactRequirement = "collected.alerts"
+	CollectedDiscussion                  FactRequirement = "collected.discussion"
+	CollectedWeatherStory                FactRequirement = "collected.weather_story"
+	CollectedSPCConvectiveOutlooks       FactRequirement = "collected.spc_convective_outlooks"
+	CollectedSourceMetadata              FactRequirement = "collected.source_metadata"
+	RequiresDerivedHourlyPeriods         FactRequirement = "derived.hourly_periods"
+	RequiresDerivedNarrativePeriods      FactRequirement = "derived.narrative_periods"
+	RequiresDerivedAlertOverlaps         FactRequirement = "derived.alert_overlaps"
+	RequiresDerivedDailySummaries        FactRequirement = "derived.daily_summaries"
+	RequiresDerivedDaypartSummaries      FactRequirement = "derived.daypart_summaries"
+	RequiresDerivedPrecipTiming          FactRequirement = "derived.precip_timing"
+	RequiresDerivedSPCConvectiveOutlooks FactRequirement = "derived.spc_convective_outlooks"
 )
 
 type MissingDataBehavior string
@@ -141,5 +145,7 @@ type AreaForecastDiscussionOptions struct {
 	Sections []string `json:"sections,omitempty" yaml:"sections,omitempty"`
 }
 type WeatherStoryOptions struct{}
+type SPCConvectiveOutlooksOptions struct{}
+type SPCConvectiveDiscussionOptions struct{}
 type OutdoorWindowsOptions struct{}
 type TomorrowPlanningOptions struct{}

internal/module/module_test.go

@@ -82,3 +82,21 @@ func TestStanzaValueDecodesTypedOutput(t *testing.T) {
 		t.Fatal("StanzaValue(missing) found = true, want false")
 	}
 }
+
+func TestSPCConvectiveModuleContractsAreStable(t *testing.T) {
+	if SPCConvectiveOutlooks != ID("spc_convective_outlooks") {
+		t.Fatalf("SPCConvectiveOutlooks = %q, want stable source/module ID", SPCConvectiveOutlooks)
+	}
+	if SPCConvectiveDiscussion != ID("spc_convective_discussion") {
+		t.Fatalf("SPCConvectiveDiscussion = %q, want stable discussion module ID", SPCConvectiveDiscussion)
+	}
+	if CollectedSPCConvectiveOutlooks != FactRequirement("collected.spc_convective_outlooks") {
+		t.Fatalf("CollectedSPCConvectiveOutlooks = %q, want collected requirement", CollectedSPCConvectiveOutlooks)
+	}
+	if RequiresDerivedSPCConvectiveOutlooks != FactRequirement("derived.spc_convective_outlooks") {
+		t.Fatalf("RequiresDerivedSPCConvectiveOutlooks = %q, want derived requirement", RequiresDerivedSPCConvectiveOutlooks)
+	}
+
+	_ = SPCConvectiveOutlooksOptions{}
+	_ = SPCConvectiveDiscussionOptions{}
+}

internal/promptinput/package.go

@@ -35,6 +35,7 @@ var briefingCategoryOrder = []string{
 
 var briefingStanzaCategories = map[string]string{
 	string(module.AlertDigest):             categoryApplicableRiskProducts,
+	string(module.SPCConvectiveOutlooks):   categoryApplicableRiskProducts,
 	string(module.DerivedDailySummary):     categoryDerivedSummaries,
 	string(module.DerivedDaypartSummaries): categoryDerivedSummaries,
 	string(module.PrecipTiming):            categoryDerivedSummaries,
@@ -42,6 +43,7 @@ var briefingStanzaCategories = map[string]string{
 	string(module.TomorrowPlanning):        categoryDerivedSummaries,
 	string(module.NarrativeForecast):       categoryNarrativeProducts,
 	string(module.AreaForecastDiscussion):  categoryNarrativeProducts,
+	string(module.SPCConvectiveDiscussion): categoryNarrativeProducts,
 	string(module.WeatherStory):            categoryNarrativeProducts,
 	string(module.CurrentConditions):       categoryRawData,
 	string(module.HourlyForecast):          categoryRawData,

internal/promptinput/package_test.go

@@ -164,6 +164,50 @@ func TestMarshalYAMLIsDeterministicAndGroupsNamedStanzas(t *testing.T) {
 	}
 }
 
+func TestMarshalYAMLPlacesSPCConvectiveStanzasInPromptCategories(t *testing.T) {
+	req := validBuildRequest(t)
+	req.Modules = snapshotWithOutputs(t,
+		module.Output{ID: module.Metadata, StanzaName: "metadata", Value: map[string]string{"run_id": req.Metadata.RunID}},
+		module.Output{ID: module.SPCConvectiveDiscussion, StanzaName: string(module.SPCConvectiveDiscussion), Value: map[string]any{"discussions": []string{"day1"}}},
+		module.Output{ID: module.SPCConvectiveOutlooks, StanzaName: string(module.SPCConvectiveOutlooks), Value: map[string]any{"outlook_count": 1}},
+	)
+
+	pkg, err := Build(req)
+	if err != nil {
+		t.Fatalf("Build() error = %v", err)
+	}
+	data, err := MarshalYAML(pkg)
+	if err != nil {
+		t.Fatalf("MarshalYAML() error = %v", err)
+	}
+	text := string(data)
+
+	riskIndex := strings.Index(text, "  applicable_risk_products:\n")
+	outlookIndex := strings.Index(text, "    spc_convective_outlooks:\n")
+	narrativeIndex := strings.Index(text, "  narrative_products:\n")
+	discussionIndex := strings.Index(text, "    spc_convective_discussion:\n")
+	if riskIndex < 0 || outlookIndex < 0 || narrativeIndex < 0 || discussionIndex < 0 {
+		t.Fatalf("YAML output missing SPC convective category placement:\n%s", text)
+	}
+	if !(riskIndex < outlookIndex && outlookIndex < narrativeIndex && narrativeIndex < discussionIndex) {
+		t.Fatalf("YAML output placed SPC convective stanzas in wrong order:\n%s", text)
+	}
+	if strings.Contains(text, "  raw_data:\n    spc_convective") || strings.Contains(text, "  derived_summaries:\n    spc_convective") {
+		t.Fatalf("YAML output placed SPC convective stanzas in wrong category:\n%s", text)
+	}
+
+	loaded, err := LoadYAML(data)
+	if err != nil {
+		t.Fatalf("LoadYAML() error = %v", err)
+	}
+	if _, ok := loaded.Briefing.Values[string(module.SPCConvectiveOutlooks)]; !ok {
+		t.Fatal("loaded package missing spc_convective_outlooks stanza")
+	}
+	if _, ok := loaded.Briefing.Values[string(module.SPCConvectiveDiscussion)]; !ok {
+		t.Fatal("loaded package missing spc_convective_discussion stanza")
+	}
+}
+
 func TestLoadYAMLRoundTrip(t *testing.T) {
 	pkg, err := Build(validBuildRequest(t))
 	if err != nil {

internal/report/daily_report.go

@@ -46,7 +46,9 @@ func dailyTodayModules() []module.ConfigItem {
 		module.DerivedDaypartSummaries,
 		module.PrecipTiming,
 		module.AlertDigest,
+		module.SPCConvectiveOutlooks,
 		module.AreaForecastDiscussion,
+		module.SPCConvectiveDiscussion,
 		module.WeatherStory,
 		module.OutdoorWindows,
 		module.HourlyForecast,
@@ -62,7 +64,9 @@ func dailyTomorrowModules() []module.ConfigItem {
 		module.DerivedDaypartSummaries,
 		module.PrecipTiming,
 		module.AlertDigest,
+		module.SPCConvectiveOutlooks,
 		module.AreaForecastDiscussion,
+		module.SPCConvectiveDiscussion,
 		module.WeatherStory,
 		module.OutdoorWindows,
 		module.TomorrowPlanning,

internal/report/period_test.go

@@ -267,7 +267,9 @@ func TestRegistryDefinitionsDeclareDefaultModules(t *testing.T) {
 				module.DerivedDaypartSummaries,
 				module.PrecipTiming,
 				module.AlertDigest,
+				module.SPCConvectiveOutlooks,
 				module.AreaForecastDiscussion,
+				module.SPCConvectiveDiscussion,
 				module.WeatherStory,
 				module.OutdoorWindows,
 				module.HourlyForecast,
@@ -283,7 +285,9 @@ func TestRegistryDefinitionsDeclareDefaultModules(t *testing.T) {
 				module.DerivedDaypartSummaries,
 				module.PrecipTiming,
 				module.AlertDigest,
+				module.SPCConvectiveOutlooks,
 				module.AreaForecastDiscussion,
+				module.SPCConvectiveDiscussion,
 				module.WeatherStory,
 				module.OutdoorWindows,
 				module.TomorrowPlanning,
@@ -298,7 +302,9 @@ func TestRegistryDefinitionsDeclareDefaultModules(t *testing.T) {
 				module.DerivedDaypartSummaries,
 				module.PrecipTiming,
 				module.AlertDigest,
+				module.SPCConvectiveOutlooks,
 				module.AreaForecastDiscussion,
+				module.SPCConvectiveDiscussion,
 				module.WeatherStory,
 				module.OutdoorWindows,
 			},
@@ -311,7 +317,9 @@ func TestRegistryDefinitionsDeclareDefaultModules(t *testing.T) {
 				module.DerivedDaypartSummaries,
 				module.PrecipTiming,
 				module.AlertDigest,
+				module.SPCConvectiveOutlooks,
 				module.AreaForecastDiscussion,
+				module.SPCConvectiveDiscussion,
 				module.WeatherStory,
 				module.OutdoorWindows,
 			},
@@ -323,7 +331,9 @@ func TestRegistryDefinitionsDeclareDefaultModules(t *testing.T) {
 				module.CurrentConditions,
 				module.PrecipTiming,
 				module.AlertDigest,
+				module.SPCConvectiveOutlooks,
 				module.AreaForecastDiscussion,
+				module.SPCConvectiveDiscussion,
 				module.WeatherStory,
 			},
 		},

internal/report/storm_report.go

@@ -29,7 +29,9 @@ func stormModules() []module.ConfigItem {
 		module.CurrentConditions,
 		module.PrecipTiming,
 		module.AlertDigest,
+		module.SPCConvectiveOutlooks,
 		module.AreaForecastDiscussion,
+		module.SPCConvectiveDiscussion,
 		module.WeatherStory,
 	)
 }

internal/report/three_day_report.go

@@ -30,7 +30,9 @@ func threeDayModules() []module.ConfigItem {
 		module.DerivedDaypartSummaries,
 		module.PrecipTiming,
 		module.AlertDigest,
+		module.SPCConvectiveOutlooks,
 		module.AreaForecastDiscussion,
+		module.SPCConvectiveDiscussion,
 		module.WeatherStory,
 		module.OutdoorWindows,
 	)

internal/report/weekend_report.go

@@ -31,7 +31,9 @@ func weekendModules() []module.ConfigItem {
 		module.DerivedDaypartSummaries,
 		module.PrecipTiming,
 		module.AlertDigest,
+		module.SPCConvectiveOutlooks,
 		module.AreaForecastDiscussion,
+		module.SPCConvectiveDiscussion,
 		module.WeatherStory,
 		module.OutdoorWindows,
 	)

internal/weatherdata/bundle.go

@@ -7,17 +7,18 @@ import (
 )
 
 type Bundle struct {
-	FetchedAt    time.Time       `json:"fetchedAt"`
-	Observation  *Observation    `json:"observation,omitempty"`
-	Current      *Current        `json:"current,omitempty"`
-	Hourly       *ForecastRun    `json:"hourly,omitempty"`
-	Narrative    *ForecastRun    `json:"narrative,omitempty"`
-	Alerts       *AlertRun       `json:"alerts,omitempty"`
-	Discussion   *Discussion     `json:"discussion,omitempty"`
-	Daily        *ForecastRun    `json:"daily,omitempty"`
-	WeatherStory *WeatherStory   `json:"weatherStory,omitempty"`
-	Sources      []Source        `json:"sources"`
-	Warnings     []SourceWarning `json:"warnings,omitempty"`
+	FetchedAt             time.Time             `json:"fetchedAt"`
+	Observation           *Observation          `json:"observation,omitempty"`
+	Current               *Current              `json:"current,omitempty"`
+	Hourly                *ForecastRun          `json:"hourly,omitempty"`
+	Narrative             *ForecastRun          `json:"narrative,omitempty"`
+	Alerts                *AlertRun             `json:"alerts,omitempty"`
+	Discussion            *Discussion           `json:"discussion,omitempty"`
+	Daily                 *ForecastRun          `json:"daily,omitempty"`
+	WeatherStory          *WeatherStory         `json:"weatherStory,omitempty"`
+	SPCConvectiveOutlooks *ConvectiveOutlookRun `json:"spcConvectiveOutlooks,omitempty"`
+	Sources               []Source              `json:"sources"`
+	Warnings              []SourceWarning       `json:"warnings,omitempty"`
 }
 
 type Source struct {
@@ -166,3 +167,42 @@ type WeatherStory struct {
 	Order       int        `json:"order"`
 	DownloadURL string     `json:"downloadUrl,omitempty"`
 }
+
+type ConvectiveOutlookRun struct {
+	LocationID   string                        `json:"locationId,omitempty"`
+	LocationName string                        `json:"locationName,omitempty"`
+	AsOf         *time.Time                    `json:"asOf,omitempty"`
+	IssuedAt     *time.Time                    `json:"issuedAt,omitempty"`
+	UpdatedAt    *time.Time                    `json:"updatedAt,omitempty"`
+	Product      string                        `json:"product,omitempty"`
+	Outlooks     []ConvectiveOutlook           `json:"outlooks,omitempty"`
+	Discussions  []ConvectiveOutlookDiscussion `json:"discussions,omitempty"`
+}
+
+type ConvectiveOutlook struct {
+	ID               string          `json:"id,omitempty"`
+	Provider         string          `json:"provider,omitempty"`
+	Product          string          `json:"product,omitempty"`
+	Day              int             `json:"day,omitempty"`
+	OutlookType      string          `json:"outlookType,omitempty"`
+	Label            string          `json:"label,omitempty"`
+	LabelText        string          `json:"labelText,omitempty"`
+	Forecaster       string          `json:"forecaster,omitempty"`
+	SeverityRank     *int            `json:"severityRank,omitempty"`
+	ValidFrom        time.Time       `json:"validFrom"`
+	ValidTo          time.Time       `json:"validTo"`
+	IssuedAt         *time.Time      `json:"issuedAt,omitempty"`
+	ExpiresAt        *time.Time      `json:"expiresAt,omitempty"`
+	SourceURL        string          `json:"sourceUrl,omitempty"`
+	ImageURL         string          `json:"imageUrl,omitempty"`
+	ContainsLocation bool            `json:"containsLocation"`
+	Geometry         json.RawMessage `json:"geometry,omitempty"`
+}
+
+type ConvectiveOutlookDiscussion struct {
+	Day        int        `json:"day,omitempty"`
+	Headline   string     `json:"headline,omitempty"`
+	Summary    string     `json:"summary,omitempty"`
+	Discussion string     `json:"discussion,omitempty"`
+	UpdatedAt  *time.Time `json:"updatedAt,omitempty"`
+}

internal/weatherdata/bundle_test.go

@@ -0,0 +1,78 @@
+package weatherdata
+
+import (
+	"encoding/json"
+	"testing"
+	"time"
+)
+
+func TestConvectiveOutlookRunJSONPreservesGeometry(t *testing.T) {
+	severity := 3
+	validFrom := mustParseBundleTime("2026-06-12T13:00:00Z")
+	validTo := mustParseBundleTime("2026-06-13T12:00:00Z")
+	issuedAt := mustParseBundleTime("2026-06-12T12:30:00Z")
+	updatedAt := mustParseBundleTime("2026-06-12T12:45:00Z")
+	run := ConvectiveOutlookRun{
+		LocationID:   "test-grid",
+		LocationName: "Brentwood",
+		AsOf:         &updatedAt,
+		IssuedAt:     &issuedAt,
+		Product:      "convective_outlook",
+		Outlooks: []ConvectiveOutlook{{
+			ID:               "day1-categorical-slight",
+			Provider:         "spc",
+			Product:          "convective_outlook",
+			Day:              1,
+			OutlookType:      "categorical",
+			Label:            "SLGT",
+			LabelText:        "Slight Risk",
+			Forecaster:       "Smith",
+			SeverityRank:     &severity,
+			ValidFrom:        validFrom,
+			ValidTo:          validTo,
+			IssuedAt:         &issuedAt,
+			ExpiresAt:        &validTo,
+			SourceURL:        "https://example.test/source",
+			ImageURL:         "https://example.test/image.png",
+			ContainsLocation: true,
+			Geometry:         json.RawMessage(`{"type":"Polygon","coordinates":[[[-90.1,38.1],[-90.0,38.2],[-90.1,38.1]]]}`),
+		}},
+		Discussions: []ConvectiveOutlookDiscussion{{
+			Day:        1,
+			Headline:   "Severe storms possible",
+			Summary:    "Scattered severe storms are possible.",
+			Discussion: "Discussion text.",
+			UpdatedAt:  &updatedAt,
+		}},
+	}
+
+	data, err := json.Marshal(run)
+	if err != nil {
+		t.Fatalf("Marshal() error = %v", err)
+	}
+
+	var decoded ConvectiveOutlookRun
+	if err := json.Unmarshal(data, &decoded); err != nil {
+		t.Fatalf("Unmarshal() error = %v", err)
+	}
+	if len(decoded.Outlooks) != 1 || string(decoded.Outlooks[0].Geometry) == "" {
+		t.Fatalf("decoded outlooks = %#v, want preserved geometry", decoded.Outlooks)
+	}
+	if got := string(decoded.Outlooks[0].Geometry); got != `{"type":"Polygon","coordinates":[[[-90.1,38.1],[-90.0,38.2],[-90.1,38.1]]]}` {
+		t.Fatalf("Geometry = %s, want preserved GeoJSON coordinates", got)
+	}
+	if decoded.Outlooks[0].SeverityRank == nil || *decoded.Outlooks[0].SeverityRank != severity {
+		t.Fatalf("SeverityRank = %#v, want %d", decoded.Outlooks[0].SeverityRank, severity)
+	}
+	if len(decoded.Discussions) != 1 || decoded.Discussions[0].Headline != "Severe storms possible" {
+		t.Fatalf("Discussions = %#v, want decoded discussion", decoded.Discussions)
+	}
+}
+
+func mustParseBundleTime(value string) time.Time {
+	parsed, err := time.Parse(time.RFC3339, value)
+	if err != nil {
+		panic(err)
+	}
+	return parsed
+}