Update the alert digest wording

docs/templates.md

@@ -349,6 +349,10 @@ YAML.
 | `.Modules.AlertDigest.Relevant[].Event` | string | Alert event name. |
 | `.Modules.AlertDigest.Relevant[].Headline` | string | Alert headline. |
 | `.Modules.AlertDigest.Relevant[].Severity` | string | Alert severity. |
+| `.Modules.AlertDigest.Relevant[].PeriodBegins` | string | Friendly local alert applicability start. |
+| `.Modules.AlertDigest.Relevant[].PeriodEnds` | string | Friendly local alert applicability end. |
+| `.Modules.AlertDigest.Relevant[].Instruction` | string | Alert instruction text, when provided. |
+| `.Modules.AlertDigest.Relevant[].Description` | string | Alert description text, when provided. |
 
 ### SPC Outlooks And Discussion
 

internal/app/app_test.go

@@ -567,7 +567,7 @@ func TestGenerateHourlyReportUsesGeneratedTextTemplateWorkflow(t *testing.T) {
 		"# Hourly Report",
 		"Storm chances increase through late morning.",
 		"## Active Alerts",
-		"- **Flood Watch**: Flooding possible",
+		"- **Flood Watch**: Flood Watch in effect from May 29 at 11:00 AM to May 29 at 3:00 PM. Avoid low-water crossings.",
 		"## Precipitation Timing",
 		"A cold front is moving into the region.",
 		"A front will keep the region unsettled.",
@@ -2046,7 +2046,7 @@ func hourlyBundleServer(t *testing.T) *httptest.Server {
 		case "/forecast/narrative":
 			_, _ = w.Write([]byte(`{"data":{"issuedAt":"2026-05-29T08:00:00-05:00","product":"narrative","periods":[{"startTime":"2026-05-29T06:00:00-05:00","endTime":"2026-05-29T18:00:00-05:00","textDescription":"Storms are possible today."}]}}`))
 		case "/alerts/active":
-			_, _ = w.Write([]byte(`{"data":{"alerts":[{"event":"Expired Advisory","headline":"Ends at valid start","severity":"Minor","effective":"2026-05-29T06:00:00-05:00","expires":"2026-05-29T08:30:00-05:00"},{"event":"Flood Watch","headline":"Flooding possible","severity":"Moderate","effective":"2026-05-29T11:00:00-05:00","expires":"2026-05-29T15:00:00-05:00"},{"event":"Evening Advisory","headline":"Starts at valid end","severity":"Minor","effective":"2026-05-29T14:30:00-05:00","expires":"2026-05-29T18:00:00-05:00"}]}}`))
+			_, _ = w.Write([]byte(`{"data":{"alerts":[{"event":"Expired Advisory","headline":"Ends at valid start","severity":"Minor","effective":"2026-05-29T06:00:00-05:00","expires":"2026-05-29T08:30:00-05:00"},{"event":"Flood Watch","headline":"Flooding possible","severity":"Moderate","instruction":"Avoid low-water crossings.","effective":"2026-05-29T11:00:00-05:00","expires":"2026-05-29T15:00:00-05:00"},{"event":"Evening Advisory","headline":"Starts at valid end","severity":"Minor","effective":"2026-05-29T14:30:00-05:00","expires":"2026-05-29T18:00:00-05:00"}]}}`))
 		case "/discussion":
 			_, _ = w.Write([]byte(`{"data":{"product":"discussion","issuedAt":"2026-05-29T08:05:00-05:00","keyMessages":["Storms are most likely late this morning."],"shortTerm":{"qualifier":"(Short Term)","text":"Short-term AFD narrative for hourly report."},"longTerm":{"qualifier":"(Long Term)","text":"Long-term AFD narrative for hourly report."}}}`))
 		case "/weatherstories/latest":

internal/briefing/alert_digest_module.go

@@ -19,17 +19,21 @@ type AlertSummary struct {
 	Event        string `json:"event,omitempty"`
 	Headline     string `json:"headline,omitempty"`
 	Severity     string `json:"severity,omitempty"`
+	PeriodBegins string `json:"period_begins,omitempty"`
+	PeriodEnds   string `json:"period_ends,omitempty"`
+	Instruction  string `json:"instruction,omitempty"`
+	Description  string `json:"description,omitempty"`
 }
 
 func buildAlertDigestModule(ctx ModuleContext, _ any) (*module.Output, error) {
-	value := alertDigest(ctx.Collected, ctx.Derived.AlertOverlaps)
+	value := alertDigest(ctx.Collected, ctx.Derived.AlertOverlaps, ctx.Timezone)
 	if value == nil {
 		value = &AlertDigestModule{}
 	}
 	return &module.Output{ID: module.AlertDigest, StanzaName: "alert_digest", Value: *value}, nil
 }
 
-func alertDigest(collected facts.CollectedFacts, overlaps []forecast.AlertOverlap) *AlertDigestModule {
+func alertDigest(collected facts.CollectedFacts, overlaps []forecast.AlertOverlap, timezone string) *AlertDigestModule {
 	missing := sourceMissing(collected.SourceProvenance, "alerts")
 	if collected.Alerts == nil && !missing {
 		return nil
@@ -45,6 +49,10 @@ func alertDigest(collected facts.CollectedFacts, overlaps []forecast.AlertOverla
 			Event:        overlap.Event,
 			Headline:     overlap.Headline,
 			Severity:     overlap.Severity,
+			PeriodBegins: friendlyMonthDayTimeLabel(overlap.Period.Start, timezone),
+			PeriodEnds:   friendlyMonthDayTimeLabel(overlap.Period.End, timezone),
+			Instruction:  overlap.Instruction,
+			Description:  overlap.Description,
 		})
 	}
 	return value

internal/briefing/base_modules_test.go

@@ -367,6 +367,39 @@ func TestAlertDigestDistinguishesCheckedEmptyAndMissing(t *testing.T) {
 	}
 }
 
+func TestAlertDigestIncludesPeriodAndGuidance(t *testing.T) {
+	registry := MustDefaultModuleRegistry()
+	ctx := testModuleContext()
+	ctx.Collected.Alerts = &weatherdata.AlertRun{Alerts: []json.RawMessage{json.RawMessage(`{"event":"Wind Advisory"}`)}}
+	ctx.Derived.AlertOverlaps = []forecast.AlertOverlap{{
+		Event:       "Wind Advisory",
+		Headline:    "Wind Advisory until 8 PM",
+		Severity:    "Moderate",
+		Period:      timeutil.Period{Start: mustParseModuleTime("2026-06-17T18:00:00Z"), End: mustParseModuleTime("2026-06-18T01:00:00Z")},
+		Instruction: "Secure outdoor objects.",
+		Description: "Gusty winds may blow around unsecured objects.",
+	}}
+
+	output, err := registry.BuildModule(ctx, module.ConfigItem{ID: module.AlertDigest})
+	if err != nil {
+		t.Fatalf("BuildModule(alert digest) error = %v", err)
+	}
+	value := moduleValue[AlertDigestModule](t, output)
+	if len(value.Relevant) != 1 {
+		t.Fatalf("Relevant length = %d, want 1", len(value.Relevant))
+	}
+	alert := value.Relevant[0]
+	if alert.Event != "Wind Advisory" || alert.Headline != "Wind Advisory until 8 PM" || alert.Severity != "Moderate" {
+		t.Fatalf("alert identity = %#v, want preserved event/headline/severity", alert)
+	}
+	if alert.PeriodBegins != "June 17 at 1:00 PM" || alert.PeriodEnds != "June 17 at 8:00 PM" {
+		t.Fatalf("alert period = %q/%q, want friendly local labels", alert.PeriodBegins, alert.PeriodEnds)
+	}
+	if alert.Instruction != "Secure outdoor objects." || alert.Description != "Gusty winds may blow around unsecured objects." {
+		t.Fatalf("alert guidance = %#v, want instruction and description preserved", alert)
+	}
+}
+
 func TestBaseModulesOmitMissingOptionalOutputs(t *testing.T) {
 	registry := MustDefaultModuleRegistry()
 	ctx := testModuleContext()

internal/briefing/metadata_module.go

@@ -44,7 +44,7 @@ func buildMetadataModule(ctx ModuleContext, _ any) (*module.Output, error) {
 		ValidPeriod:    metadata.ValidPeriod,
 		Location:       copyLocation(ctx.Location),
 		SourceWarnings: sourceWarningSummaries(ctx.Collected.SourceWarnings),
-		Alerts:         alertDigest(ctx.Collected, ctx.Derived.AlertOverlaps),
+		Alerts:         alertDigest(ctx.Collected, ctx.Derived.AlertOverlaps, ctx.Timezone),
 	}
 	return &module.Output{ID: module.Metadata, StanzaName: "metadata", Value: value}, nil
 }

internal/briefing/module_format_helpers.go

@@ -122,6 +122,17 @@ func friendlyDateTimeLabel(value time.Time, timezone string) string {
 	return value.In(location).Format("2006-01-02 at 3:04 PM")
 }
 
+func friendlyMonthDayTimeLabel(value time.Time, timezone string) string {
+	if value.IsZero() {
+		return ""
+	}
+	location, err := timeutil.LoadLocation(timezone)
+	if err != nil {
+		location = time.UTC
+	}
+	return value.In(location).Format("January 2 at 3:04 PM")
+}
+
 func friendlyDateLabel(date string, timezone string) string {
 	location, err := timeutil.LoadLocation(timezone)
 	if err != nil {

internal/forecast/derive.go

@@ -65,6 +65,7 @@ type AlertOverlap struct {
 	Period      timeutil.Period `json:"period"`
 	Overlap     timeutil.Period `json:"overlap"`
 	Description string          `json:"description,omitempty"`
+	Instruction string          `json:"instruction,omitempty"`
 }
 
 type PrecipTiming struct {
@@ -463,6 +464,7 @@ func AlertOverlaps(alertRun *weatherdata.AlertRun, period timeutil.Period) []Ale
 			Period:      alert.Period,
 			Overlap:     intersect(alert.Period, period),
 			Description: alert.Description,
+			Instruction: alert.Instruction,
 		})
 	}
 	sort.SliceStable(overlaps, func(i int, j int) bool {
@@ -476,6 +478,7 @@ type parsedAlert struct {
 	Headline    string
 	Severity    string
 	Description string
+	Instruction string
 	Period      timeutil.Period
 }
 
@@ -488,7 +491,8 @@ func parseAlert(raw json.RawMessage) (parsedAlert, bool) {
 		Event:       stringField(fields, "event"),
 		Headline:    firstStringField(fields, "headline", "title"),
 		Severity:    stringField(fields, "severity"),
-		Description: firstStringField(fields, "description", "instruction"),
+		Description: stringField(fields, "description"),
+		Instruction: stringField(fields, "instruction"),
 	}
 	start, startOK := firstTimeField(fields, "onset", "startsAt", "startTime", "effective", "sent")
 	end, endOK := firstTimeField(fields, "ends", "endsAt", "endTime", "expires")

internal/forecast/derive_test.go

@@ -211,7 +211,7 @@ func TestAlertOverlap(t *testing.T) {
 }
 
 func TestAlertOverlapUsesOnsetAndEnds(t *testing.T) {
-	raw := json.RawMessage(`{"event":"Wind Advisory","headline":"Wind Advisory issued June 16 at 12:39PM CDT until June 17 at 8:00PM CDT by NWS St Louis MO","severity":"Moderate","effective":"2026-06-16T17:39:00Z","onset":"2026-06-17T18:00:00Z","ends":"2026-06-18T01:00:00Z","expires":"2026-06-17T08:45:00Z"}`)
+	raw := json.RawMessage(`{"event":"Wind Advisory","headline":"Wind Advisory issued June 16 at 12:39PM CDT until June 17 at 8:00PM CDT by NWS St Louis MO","severity":"Moderate","description":"Southwest winds 20 to 30 mph with gusts up to 45 mph expected.","instruction":"Secure outdoor objects.","effective":"2026-06-16T17:39:00Z","onset":"2026-06-17T18:00:00Z","ends":"2026-06-18T01:00:00Z","expires":"2026-06-17T08:45:00Z"}`)
 	alertRun := &weatherdata.AlertRun{Alerts: []json.RawMessage{raw}}
 	period := timeutil.Period{
 		Start: mustParse("2026-06-17T12:00:00-05:00"),
@@ -234,6 +234,12 @@ func TestAlertOverlapUsesOnsetAndEnds(t *testing.T) {
 	if overlaps[0].Overlap.End.Format(time.RFC3339) != "2026-06-18T01:00:00Z" {
 		t.Fatalf("overlap end = %s, want alert ends", overlaps[0].Overlap.End.Format(time.RFC3339))
 	}
+	if overlaps[0].Description != "Southwest winds 20 to 30 mph with gusts up to 45 mph expected." {
+		t.Fatalf("Description = %q, want preserved description", overlaps[0].Description)
+	}
+	if overlaps[0].Instruction != "Secure outdoor objects." {
+		t.Fatalf("Instruction = %q, want preserved instruction", overlaps[0].Instruction)
+	}
 }
 
 func TestAlertOverlapUsesOnsetAndEndsForLocalDateRelevance(t *testing.T) {

internal/generatedtext/render_context_test.go

@@ -91,7 +91,7 @@ func TestBuildHourlyRenderContext(t *testing.T) {
 		"**Updated:** Friday, May 29, 2026 at 8:30 AM",
 		"Storm chances increase through late morning.",
 		"- **10:00 AM:** 75°F and showers. Probability of precipitation is 70%.",
-		"- **Flood Watch**: Flood Watch until early afternoon",
+		"- **Flood Watch**: Flood Watch in effect from May 29 at 10:00 AM to May 29 at 2:30 PM. Avoid low-water crossings.",
 		"A cold front is moving into the region.",
 		"A front will keep the region unsettled.",
 	} {
@@ -1190,7 +1190,7 @@ func testSnapshot(t *testing.T) module.Snapshot {
 				ActiveCount:   1,
 				RelevantCount: 1,
 				Relevant: []briefing.AlertSummary{
-					{Event: "Flood Watch", Headline: "Flood Watch until early afternoon", Severity: "Moderate"},
+					{Event: "Flood Watch", Headline: "Flood Watch until early afternoon", Severity: "Moderate", PeriodBegins: "May 29 at 10:00 AM", PeriodEnds: "May 29 at 2:30 PM", Instruction: "Avoid low-water crossings."},
 				},
 			},
 		},

internal/reporttemplate/reporttemplate_test.go

@@ -240,7 +240,7 @@ func TestRenderHourly(t *testing.T) {
 				},
 			},
 			AlertDigest: &testAlertDigest{
-				Relevant: []testAlert{{Event: "Flood Watch", Headline: "Flood Watch until 2:30 PM", Severity: "Moderate"}},
+				Relevant: []testAlert{{Event: "Flood Watch", Headline: "Flood Watch until 2:30 PM", Severity: "Moderate", PeriodBegins: "May 29 at 10:00 AM", PeriodEnds: "May 29 at 2:30 PM", Instruction: "Avoid low-water crossings."}},
 			},
 			SPCConvectiveOutlooks: &testSPCOutlooks{
 				Outlooks: []testSPCOutlook{{LabelText: "Slight Risk", PeriodBegins: "8 AM", PeriodEnds: "2 PM"}},
@@ -269,7 +269,7 @@ func TestRenderHourly(t *testing.T) {
 		"Storm chances increase through late morning.",
 		"Currently, it is 74°F and partly cloudy. It feels like 76°F, with a relative humidity of 71% and winds from the south at 8 mph.",
 		"## Active Alerts",
-		"- **Flood Watch**: Flood Watch until 2:30 PM",
+		"- **Flood Watch**: Flood Watch in effect from May 29 at 10:00 AM to May 29 at 2:30 PM. Avoid low-water crossings.",
 		"- **9:00 AM:** 74°F and cloudy.",
 		"- **10:00 AM:** 75°F and showers. Probability of precipitation is 70%.",
 		"- **10:00 AM** to **12:00 PM**: Expect showers. The peak precipitation chance is 70% at 10:00 AM.",
@@ -352,7 +352,7 @@ func TestRenderTomorrow(t *testing.T) {
 				},
 			},
 			AlertDigest: &testAlertDigest{
-				Relevant: []testAlert{{Event: "Wind Advisory", Headline: "Wind Advisory until 8:00 PM", Severity: "Moderate"}},
+				Relevant: []testAlert{{Event: "Wind Advisory", Headline: "Wind Advisory until 8:00 PM", Severity: "Moderate", PeriodBegins: "June 15 at 1:00 PM", PeriodEnds: "June 15 at 8:00 PM", Instruction: "Secure outdoor objects."}},
 			},
 		},
 	})
@@ -366,7 +366,7 @@ func TestRenderTomorrow(t *testing.T) {
 		"**Updated:** Sunday, June 14, 2026 at 9:14 AM",
 		"Tomorrow starts dry before showers return later in the day.",
 		"## Active Alerts",
-		"- **Wind Advisory**: Wind Advisory until 8:00 PM",
+		"- **Wind Advisory**: Wind Advisory in effect from June 15 at 1:00 PM to June 15 at 8:00 PM. Secure outdoor objects.",
 		"- **Overnight:** Partly cloudy, with temperatures falling from the mid 60s to the upper 50s.",
 		"- **Morning:** Sunny, with temperatures rising from the upper 50s to the upper 60s.",
 		"- **Afternoon:** Sunny, with temperatures in the upper 70s. Chance of precipitation is 70%.",
@@ -450,7 +450,7 @@ func TestRenderDaily(t *testing.T) {
 				},
 			},
 			AlertDigest: &testAlertDigest{
-				Relevant: []testAlert{{Event: "Flood Watch", Headline: "Flood Watch until 6:00 PM", Severity: "Moderate"}},
+				Relevant: []testAlert{{Event: "Flood Watch", Headline: "Flood Watch until 6:00 PM", Severity: "Moderate", PeriodBegins: "June 15 at 3:00 PM", PeriodEnds: "June 15 at 6:00 PM", Description: "Monitor creek levels."}},
 			},
 		},
 	})
@@ -464,7 +464,7 @@ func TestRenderDaily(t *testing.T) {
 		"**Updated:** Sunday, June 14, 2026 at 9:14 AM",
 		"The selected day starts dry before showers return later in the day.",
 		"## Active Alerts",
-		"- **Flood Watch**: Flood Watch until 6:00 PM",
+		"- **Flood Watch**: Flood Watch in effect from June 15 at 3:00 PM to June 15 at 6:00 PM. Monitor creek levels.",
 		"- **Morning:** Sunny, with temperatures rising from the upper 50s to the upper 60s.",
 		"- **Afternoon:** Showers, with temperatures in the upper 70s. Chance of precipitation is 70%.",
 		"- **3:00 PM** to **6:00 PM**: Expect showers. The peak precipitation chance is 70% at 3:00 PM.",
@@ -550,7 +550,7 @@ func TestRenderToday(t *testing.T) {
 				},
 			},
 			AlertDigest: &testAlertDigest{
-				Relevant: []testAlert{{Event: "Wind Advisory", Headline: "Wind Advisory until 8:00 PM", Severity: "Moderate"}},
+				Relevant: []testAlert{{Event: "Wind Advisory", Headline: "Wind Advisory until 8:00 PM", Severity: "Moderate", PeriodBegins: "June 15 at 1:00 PM", PeriodEnds: "June 15 at 8:00 PM", Instruction: "Secure outdoor objects."}},
 			},
 			TodayPlanning: &testTodayPlanning{
 				MorningReadiness:   []string{"Morning weather looks routine."},
@@ -568,7 +568,7 @@ func TestRenderToday(t *testing.T) {
 		"**Updated:** Monday, June 15, 2026 at 7:14 AM",
 		"Today starts dry before showers return later in the day.",
 		"## Active Alerts",
-		"- **Wind Advisory**: Wind Advisory until 8:00 PM",
+		"- **Wind Advisory**: Wind Advisory in effect from June 15 at 1:00 PM to June 15 at 8:00 PM. Secure outdoor objects.",
 		"Currently, it is 58°F and clear. It feels like 57°F, with a relative humidity of 61% and winds from the northwest at 9 mph.",
 		"- **Morning:** Sunny, with temperatures rising from the upper 50s to the upper 60s.",
 		"- **Afternoon:** Showers, with temperatures in the upper 70s. Chance of precipitation is 70%.",
@@ -1039,6 +1039,10 @@ type testAlert struct {
 	Event        string
 	Headline     string
 	Severity     string
+	PeriodBegins string
+	PeriodEnds   string
+	Instruction  string
+	Description  string
 }
 
 type testSPCOutlooks struct {

internal/reporttemplate/templates/partials/alert_digest.md.tmpl

@@ -1,6 +1,6 @@
 {{ define "alert_digest" }}{{ if and .Modules.AlertDigest .Modules.AlertDigest.Relevant }}## Active Alerts
 {{ range .Modules.AlertDigest.Relevant -}}
-- **{{ if .Event }}{{ .Event }}{{ else }}{{ .Headline }}{{ end }}**{{ with .Headline }}: {{ . }}{{ end }}
+- **{{ if .Event }}{{ .Event }}{{ else }}{{ .Headline }}{{ end }}**: {{ if .Event }}{{ .Event }}{{ else }}{{ .Headline }}{{ end }} in effect{{ with .PeriodBegins }} from {{ . }}{{ end }}{{ with .PeriodEnds }} to {{ . }}{{ end }}.{{ with .Instruction }} {{ . }}{{ else }}{{ with .Description }} {{ . }}{{ end }}{{ end }}
 {{ end }}
 
 {{ end }}{{ end }}