diff --git a/API.md b/API.md
index c2b204e..c8c5d98 100644
--- a/API.md
+++ b/API.md
@@ -80,34 +80,18 @@ A `WeatherObservation` represents a point-in-time observation for a station/loca
 | `stationName` | string | no | Human station name |
 | `timestamp` | timestamp string | yes | Observation timestamp |
 | `conditionCode` | int | yes | WMO code (`-1` unknown) |
-| `conditionText` | string | no | Canonical short condition text |
 | `isDay` | bool | no | Day/night hint |
-| `providerRawDescription` | string | no | Provider-specific evidence text |
-| `textDescription` | string | no | Legacy/transitional text description |
-| `iconUrl` | string | no | Legacy/transitional icon URL |
+| `textDescription` | string | no | Human-facing short description |
 | `temperatureC` | number | no | Celsius |
 | `dewpointC` | number | no | Celsius |
 | `windDirectionDegrees` | number | no | Degrees |
 | `windSpeedKmh` | number | no | km/h |
 | `windGustKmh` | number | no | km/h |
 | `barometricPressurePa` | number | no | Pascals |
-| `seaLevelPressurePa` | number | no | Pascals |
 | `visibilityMeters` | number | no | Meters |
 | `relativeHumidityPercent` | number | no | Percent |
 | `apparentTemperatureC` | number | no | Celsius |
-| `elevationMeters` | number | no | Meters |
-| `rawMessage` | string | no | Provider raw message (for example METAR) |
 | `presentWeather` | array | no | Provider-specific structured weather fragments |
-| `cloudLayers` | array | no | Cloud layer details |
-
-### Nested: `cloudLayers[]`
-
-Each `cloudLayers[]` element:
-
-| Field | Type | Required | Notes |
-|---|---:|:---:|---|
-| `baseMeters` | number | no | Cloud base altitude in meters |
-| `amount` | string | no | Provider string (e.g. FEW/SCT/BKN/OVC) |
 
 ### Nested: `presentWeather[]`
 
@@ -241,7 +225,7 @@ A run may contain zero, one, or many alerts.
 
 - Consumers **must** ignore unknown fields.
 - Producers (weatherfeeder) prefer **additive changes** within a schema version.
-- Renames/removals/semantic breaks require a **schema version bump** (`weather.*.v2`).
+- Renames/removals/semantic breaks normally require a **schema version bump** (`weather.*.v2`); pre-1.0 projects may choose in-place changes.
 
 ---
 
@@ -259,7 +243,7 @@ A run may contain zero, one, or many alerts.
     "stationId": "KSTL",
     "timestamp": "2026-01-17T14:00:00Z",
     "conditionCode": 1,
-    "conditionText": "Mainly Sunny",
+    "textDescription": "Mainly Sunny",
     "temperatureC": 3.25,
     "windSpeedKmh": 18.5
   }
diff --git a/internal/normalizers/nws/observation.go b/internal/normalizers/nws/observation.go
index 19ddd25..9324df9 100644
--- a/internal/normalizers/nws/observation.go
+++ b/internal/normalizers/nws/observation.go
@@ -54,14 +54,6 @@ func buildObservation(parsed nwsObservationResponse) (model.WeatherObservation,
 		ts = t.UTC()
 	}
 
-	cloudLayers := make([]model.CloudLayer, 0, len(parsed.Properties.CloudLayers))
-	for _, cl := range parsed.Properties.CloudLayers {
-		cloudLayers = append(cloudLayers, model.CloudLayer{
-			BaseMeters: cl.Base.Value,
-			Amount:     cl.Amount,
-		})
-	}
-
 	// Preserve raw presentWeather objects (for troubleshooting / drift analysis).
 	present := make([]model.PresentWeather, 0, len(parsed.Properties.PresentWeather))
 	for _, pw := range parsed.Properties.PresentWeather {
@@ -70,6 +62,7 @@ func buildObservation(parsed nwsObservationResponse) (model.WeatherObservation,
 
 	// Decode presentWeather into typed METAR phenomena for mapping.
 	phenomena := decodeMetarPhenomena(parsed.Properties.PresentWeather)
+	cloudLayers := parsed.Properties.CloudLayers
 
 	providerDesc := strings.TrimSpace(parsed.Properties.TextDescription)
 
@@ -81,9 +74,6 @@ func buildObservation(parsed nwsObservationResponse) (model.WeatherObservation,
 		isDay = isDayFromLatLonTime(*lat, *lon, ts)
 	}
 
-	// Canonical condition text comes from our WMO table.
-	canonicalText := standards.WMOText(wmo, isDay)
-
 	// Apparent temperature: prefer wind chill when both are supplied.
 	var apparentC *float64
 	if parsed.Properties.WindChill.Value != nil {
@@ -98,15 +88,9 @@ func buildObservation(parsed nwsObservationResponse) (model.WeatherObservation,
 		Timestamp:   ts,
 
 		ConditionCode: wmo,
-		ConditionText: canonicalText,
 		IsDay:         isDay,
 
-		ProviderRawDescription: providerDesc,
-
-		// Transitional / human-facing:
-		// keep output consistent by populating TextDescription from canonical text.
-		TextDescription: canonicalText,
-		IconURL:         parsed.Properties.Icon,
+		TextDescription: providerDesc,
 
 		TemperatureC: parsed.Properties.Temperature.Value,
 		DewpointC:    parsed.Properties.Dewpoint.Value,
@@ -115,19 +99,21 @@ func buildObservation(parsed nwsObservationResponse) (model.WeatherObservation,
 		WindSpeedKmh:         parsed.Properties.WindSpeed.Value,
 		WindGustKmh:          parsed.Properties.WindGust.Value,
 
-		BarometricPressurePa: parsed.Properties.BarometricPressure.Value,
-		SeaLevelPressurePa:   parsed.Properties.SeaLevelPressure.Value,
+		BarometricPressurePa: pressurePrecedenceNWS(parsed.Properties.SeaLevelPressure.Value, parsed.Properties.BarometricPressure.Value),
 		VisibilityMeters:     parsed.Properties.Visibility.Value,
 
 		RelativeHumidityPercent: parsed.Properties.RelativeHumidity.Value,
 		ApparentTemperatureC:    apparentC,
 
-		ElevationMeters: parsed.Properties.Elevation.Value,
-		RawMessage:      parsed.Properties.RawMessage,
-
 		PresentWeather: present,
-		CloudLayers:    cloudLayers,
 	}
 
 	return obs, ts, nil
 }
+
+func pressurePrecedenceNWS(seaLevelPa, barometricPa *float64) *float64 {
+	if seaLevelPa != nil {
+		return seaLevelPa
+	}
+	return barometricPa
+}
diff --git a/internal/normalizers/nws/observation_test.go b/internal/normalizers/nws/observation_test.go
new file mode 100644
index 0000000..c14bd73
--- /dev/null
+++ b/internal/normalizers/nws/observation_test.go
@@ -0,0 +1,51 @@
+package nws
+
+import "testing"
+
+func TestBuildObservationTextDescriptionAndPressurePrecedence(t *testing.T) {
+	barometric := 100200.0
+	seaLevel := 101400.0
+
+	parsed := nwsObservationResponse{}
+	parsed.Properties.Timestamp = "2026-03-16T19:00:00Z"
+	parsed.Properties.TextDescription = "  Overcast  "
+	parsed.Properties.BarometricPressure.Value = &barometric
+	parsed.Properties.SeaLevelPressure.Value = &seaLevel
+
+	obs, _, err := buildObservation(parsed)
+	if err != nil {
+		t.Fatalf("buildObservation() error = %v", err)
+	}
+
+	if got, want := obs.TextDescription, "Overcast"; got != want {
+		t.Fatalf("TextDescription = %q, want %q", got, want)
+	}
+
+	if obs.BarometricPressurePa == nil {
+		t.Fatalf("BarometricPressurePa = nil, want non-nil")
+	}
+	if got, want := *obs.BarometricPressurePa, seaLevel; got != want {
+		t.Fatalf("BarometricPressurePa = %v, want %v", got, want)
+	}
+}
+
+func TestBuildObservationPressureFallbackToBarometric(t *testing.T) {
+	barometric := 99900.0
+
+	parsed := nwsObservationResponse{}
+	parsed.Properties.Timestamp = "2026-03-16T19:00:00Z"
+	parsed.Properties.TextDescription = "Cloudy"
+	parsed.Properties.BarometricPressure.Value = &barometric
+
+	obs, _, err := buildObservation(parsed)
+	if err != nil {
+		t.Fatalf("buildObservation() error = %v", err)
+	}
+
+	if obs.BarometricPressurePa == nil {
+		t.Fatalf("BarometricPressurePa = nil, want non-nil")
+	}
+	if got, want := *obs.BarometricPressurePa, barometric; got != want {
+		t.Fatalf("BarometricPressurePa = %v, want %v", got, want)
+	}
+}
diff --git a/internal/normalizers/nws/types.go b/internal/normalizers/nws/types.go
index dc5327f..8719642 100644
--- a/internal/normalizers/nws/types.go
+++ b/internal/normalizers/nws/types.go
@@ -86,16 +86,18 @@ type nwsObservationResponse struct {
 		// We decode these as generic maps, then optionally interpret them in metar.go.
 		PresentWeather []map[string]any `json:"presentWeather"`
 
-		CloudLayers []struct {
-			Base struct {
-				UnitCode string   `json:"unitCode"`
-				Value    *float64 `json:"value"`
-			} `json:"base"`
-			Amount string `json:"amount"`
-		} `json:"cloudLayers"`
+		CloudLayers []nwsCloudLayer `json:"cloudLayers"`
 	} `json:"properties"`
 }
 
+type nwsCloudLayer struct {
+	Base struct {
+		UnitCode string   `json:"unitCode"`
+		Value    *float64 `json:"value"`
+	} `json:"base"`
+	Amount string `json:"amount"`
+}
+
 // nwsForecastResponse is a minimal-but-sufficient representation of the NWS
 // gridpoint forecast GeoJSON payload needed for mapping into model.WeatherForecastRun.
 //
diff --git a/internal/normalizers/nws/wmo_map.go b/internal/normalizers/nws/wmo_map.go
index 701cafe..72d127f 100644
--- a/internal/normalizers/nws/wmo_map.go
+++ b/internal/normalizers/nws/wmo_map.go
@@ -14,7 +14,7 @@ import (
 //  1. METAR phenomena (presentWeather) — most reliable for precip/hazards
 //  2. textDescription keywords — weaker, but reusable across providers
 //  3. cloud layers fallback — only for sky-only conditions
-func mapNWSToWMO(providerDesc string, cloudLayers []model.CloudLayer, phenomena []metarPhenomenon) model.WMOCode {
+func mapNWSToWMO(providerDesc string, cloudLayers []nwsCloudLayer, phenomena []metarPhenomenon) model.WMOCode {
 	// 1) Prefer METAR phenomena if present.
 	if code := wmoFromPhenomena(phenomena); code != model.WMOUnknown {
 		return code
@@ -167,7 +167,7 @@ func wmoFromPhenomena(phenomena []metarPhenomenon) model.WMOCode {
 	return model.WMOUnknown
 }
 
-func wmoFromCloudLayers(cloudLayers []model.CloudLayer) model.WMOCode {
+func wmoFromCloudLayers(cloudLayers []nwsCloudLayer) model.WMOCode {
 	// NWS cloud layer amount values commonly include:
 	// OVC, BKN, SCT, FEW, SKC, CLR, VV (vertical visibility / obscured sky)
 	//
diff --git a/internal/normalizers/openmeteo/observation.go b/internal/normalizers/openmeteo/observation.go
index 99ee403..5e0709d 100644
--- a/internal/normalizers/openmeteo/observation.go
+++ b/internal/normalizers/openmeteo/observation.go
@@ -86,20 +86,9 @@ func buildObservation(parsed omResponse) (model.WeatherObservation, time.Time, e
 		StationName: "Open-Meteo",
 		Timestamp:   ts,
 
-		ConditionCode: wmo,
-		ConditionText: canonicalText,
-		IsDay:         isDay,
-
-		// Open-Meteo does not provide a separate human text description for "current"
-		// when using weather_code; we leave provider evidence empty.
-		ProviderRawDescription: "",
-
-		// Transitional / human-facing:
-		// keep output consistent by populating TextDescription from canonical text.
+		ConditionCode:   wmo,
+		IsDay:           isDay,
 		TextDescription: canonicalText,
-
-		// IconURL: Open-Meteo does not provide an icon URL in this endpoint.
-		IconURL: "",
 	}
 
 	// Measurements (all optional; only set when present).
@@ -132,20 +121,13 @@ func buildObservation(parsed omResponse) (model.WeatherObservation, time.Time, e
 		obs.WindGustKmh = &v
 	}
 
-	if parsed.Current.SurfacePressure != nil {
+	if parsed.Current.PressureMSL != nil {
+		v := normcommon.PressurePaFromHPa(*parsed.Current.PressureMSL)
+		obs.BarometricPressurePa = &v
+	} else if parsed.Current.SurfacePressure != nil {
 		v := normcommon.PressurePaFromHPa(*parsed.Current.SurfacePressure)
 		obs.BarometricPressurePa = &v
 	}
 
-	if parsed.Current.PressureMSL != nil {
-		v := normcommon.PressurePaFromHPa(*parsed.Current.PressureMSL)
-		obs.SeaLevelPressurePa = &v
-	}
-
-	if parsed.Elevation != nil {
-		v := *parsed.Elevation
-		obs.ElevationMeters = &v
-	}
-
 	return obs, ts, nil
 }
diff --git a/internal/normalizers/openmeteo/observation_test.go b/internal/normalizers/openmeteo/observation_test.go
new file mode 100644
index 0000000..ce97b5a
--- /dev/null
+++ b/internal/normalizers/openmeteo/observation_test.go
@@ -0,0 +1,61 @@
+package openmeteo
+
+import "testing"
+
+func TestBuildObservationTextDescriptionAndPressurePrecedence(t *testing.T) {
+	weatherCode := 2
+	pressureMSL := 1016.0
+	surfacePressure := 1009.0
+
+	parsed := omResponse{
+		Timezone:         "UTC",
+		UTCOffsetSeconds: 0,
+		Current: omCurrent{
+			Time:            "2026-03-16T19:00",
+			WeatherCode:     &weatherCode,
+			PressureMSL:     &pressureMSL,
+			SurfacePressure: &surfacePressure,
+		},
+	}
+
+	obs, _, err := buildObservation(parsed)
+	if err != nil {
+		t.Fatalf("buildObservation() error = %v", err)
+	}
+
+	if got, want := obs.TextDescription, "Partly Cloudy"; got != want {
+		t.Fatalf("TextDescription = %q, want %q", got, want)
+	}
+
+	if obs.BarometricPressurePa == nil {
+		t.Fatalf("BarometricPressurePa = nil, want non-nil")
+	}
+	if got, want := *obs.BarometricPressurePa, 101600.0; got != want {
+		t.Fatalf("BarometricPressurePa = %v, want %v", got, want)
+	}
+}
+
+func TestBuildObservationPressureFallbackToSurface(t *testing.T) {
+	surfacePressure := 1008.0
+
+	parsed := omResponse{
+		Timezone:         "UTC",
+		UTCOffsetSeconds: 0,
+		Current: omCurrent{
+			Time:            "2026-03-16T19:00",
+			SurfacePressure: &surfacePressure,
+		},
+	}
+
+	obs, _, err := buildObservation(parsed)
+	if err != nil {
+		t.Fatalf("buildObservation() error = %v", err)
+	}
+
+	if obs.BarometricPressurePa == nil {
+		t.Fatalf("BarometricPressurePa = nil, want non-nil")
+	}
+	if got, want := *obs.BarometricPressurePa, 100800.0; got != want {
+		t.Fatalf("BarometricPressurePa = %v, want %v", got, want)
+	}
+}
diff --git a/internal/normalizers/openweather/common.go b/internal/normalizers/openweather/common.go
index 70270bc..d785f0f 100644
--- a/internal/normalizers/openweather/common.go
+++ b/internal/normalizers/openweather/common.go
@@ -53,15 +53,6 @@ func inferIsDay(icon string, dt, sunrise, sunset int64) *bool {
 	return nil
 }
 
-// openWeatherIconURL builds the standard OpenWeather icon URL for the given icon code.
-func openWeatherIconURL(icon string) string {
-	icon = strings.TrimSpace(icon)
-	if icon == "" {
-		return ""
-	}
-	return fmt.Sprintf("https://openweathermap.org/img/wn/%s@2x.png", icon)
-}
-
 // openWeatherStationID returns a stable station identifier for the given response.
 // Prefer the OpenWeather city ID when present; otherwise, fall back to coordinates.
 func openWeatherStationID(parsed owmResponse) string {
diff --git a/internal/normalizers/openweather/observation.go b/internal/normalizers/openweather/observation.go
index 68ecb40..98ce40c 100644
--- a/internal/normalizers/openweather/observation.go
+++ b/internal/normalizers/openweather/observation.go
@@ -75,10 +75,10 @@ func buildObservation(parsed owmResponse) (model.WeatherObservation, time.Time,
 	}
 
 	surfacePa := normcommon.PressurePaFromHPa(parsed.Main.Pressure)
-	var seaLevelPa *float64
+	barometricPa := &surfacePa
 	if parsed.Main.SeaLevel != nil {
 		v := normcommon.PressurePaFromHPa(*parsed.Main.SeaLevel)
-		seaLevelPa = &v
+		barometricPa = &v
 	}
 
 	wsKmh := normcommon.SpeedKmhFromMps(parsed.Wind.Speed)
@@ -96,9 +96,6 @@ func buildObservation(parsed owmResponse) (model.WeatherObservation, time.Time,
 
 	// Condition mapping: OpenWeather condition IDs -> canonical WMO code vocabulary.
 	wmo := mapOpenWeatherToWMO(owmID)
-	canonicalText := standards.WMOText(wmo, isDay)
-
-	iconURL := openWeatherIconURL(icon)
 
 	stationID := openWeatherStationID(parsed)
 	stationName := strings.TrimSpace(parsed.Name)
@@ -111,15 +108,9 @@ func buildObservation(parsed owmResponse) (model.WeatherObservation, time.Time,
 		StationName: stationName,
 		Timestamp:   ts,
 
-		ConditionCode: wmo,
-		ConditionText: canonicalText,
-		IsDay:         isDay,
-
-		ProviderRawDescription: rawDesc,
-
-		// Human-facing legacy fields: populate with canonical text for consistency.
-		TextDescription: canonicalText,
-		IconURL:         iconURL,
+		ConditionCode:   wmo,
+		IsDay:           isDay,
+		TextDescription: rawDesc,
 
 		TemperatureC:         &tempC,
 		ApparentTemperatureC: apparentC,
@@ -128,8 +119,7 @@ func buildObservation(parsed owmResponse) (model.WeatherObservation, time.Time,
 		WindSpeedKmh:         &wsKmh,
 		WindGustKmh:          wgKmh,
 
-		BarometricPressurePa: &surfacePa,
-		SeaLevelPressurePa:   seaLevelPa,
+		BarometricPressurePa: barometricPa,
 		VisibilityMeters:     visM,
 
 		RelativeHumidityPercent: &rh,
diff --git a/internal/normalizers/openweather/observation_test.go b/internal/normalizers/openweather/observation_test.go
new file mode 100644
index 0000000..93e5f7d
--- /dev/null
+++ b/internal/normalizers/openweather/observation_test.go
@@ -0,0 +1,58 @@
+package openweather
+
+import "testing"
+
+func TestBuildObservationTextDescriptionAndPressurePrecedence(t *testing.T) {
+	seaLevel := 1018.0
+
+	parsed := owmResponse{}
+	parsed.Dt = 1710000000
+	parsed.Main.Temp = 20.0
+	parsed.Main.Humidity = 45.0
+	parsed.Main.Pressure = 1000.0
+	parsed.Main.SeaLevel = &seaLevel
+	parsed.Wind.Speed = 3.0
+	parsed.Weather = []owmWeather{
+		{ID: 801, Main: "Clouds", Description: "few clouds", Icon: "02d"},
+	}
+
+	obs, _, err := buildObservation(parsed)
+	if err != nil {
+		t.Fatalf("buildObservation() error = %v", err)
+	}
+
+	if obs.TextDescription != "few clouds" {
+		t.Fatalf("TextDescription = %q, want %q", obs.TextDescription, "few clouds")
+	}
+
+	if obs.BarometricPressurePa == nil {
+		t.Fatalf("BarometricPressurePa = nil, want non-nil")
+	}
+	if got, want := *obs.BarometricPressurePa, 101800.0; got != want {
+		t.Fatalf("BarometricPressurePa = %v, want %v", got, want)
+	}
+}
+
+func TestBuildObservationPressureFallbackToSurface(t *testing.T) {
+	parsed := owmResponse{}
+	parsed.Dt = 1710000000
+	parsed.Main.Temp = 20.0
+	parsed.Main.Humidity = 45.0
+	parsed.Main.Pressure = 1001.0
+	parsed.Wind.Speed = 3.0
+	parsed.Weather = []owmWeather{
+		{ID: 800, Description: "clear sky", Icon: "01d"},
+	}
+
+	obs, _, err := buildObservation(parsed)
+	if err != nil {
+		t.Fatalf("buildObservation() error = %v", err)
+	}
+
+	if obs.BarometricPressurePa == nil {
+		t.Fatalf("BarometricPressurePa = nil, want non-nil")
+	}
+	if got, want := *obs.BarometricPressurePa, 100100.0; got != want {
+		t.Fatalf("BarometricPressurePa = %v, want %v", got, want)
+	}
+}
diff --git a/internal/sinks/postgres/doc.go b/internal/sinks/postgres/doc.go
index a1603a5..324bbc2 100644
--- a/internal/sinks/postgres/doc.go
+++ b/internal/sinks/postgres/doc.go
@@ -11,7 +11,6 @@
 //   - weather.alert.v1       -> model.WeatherAlertRun
 //
 // Parent/child relationships:
-//   - observations.event_id -> observation_cloud_layers.event_id
 //   - observations.event_id -> observation_present_weather.event_id
 //   - forecasts.event_id    -> forecast_periods.run_event_id
 //   - alert_runs.event_id   -> alerts.run_event_id
@@ -22,7 +21,6 @@
 //   - Child primary keys use positional indexes to preserve payload order.
 //   - Prune columns:
 //   - observations.observed_at
-//   - observation_cloud_layers.observed_at
 //   - observation_present_weather.observed_at
 //   - forecasts.issued_at
 //   - forecast_periods.issued_at
@@ -54,33 +52,19 @@
 //     - station_name TEXT NULL -> payload.stationName
 //     - observed_at TIMESTAMPTZ -> payload.timestamp
 //     - condition_code INTEGER -> payload.conditionCode
-//     - condition_text TEXT NULL -> payload.conditionText
 //     - is_day BOOLEAN NULL -> payload.isDay
-//     - provider_raw_description TEXT NULL -> payload.providerRawDescription
 //     - text_description TEXT NULL -> payload.textDescription
-//     - icon_url TEXT NULL -> payload.iconUrl
 //     - temperature_c DOUBLE PRECISION NULL -> payload.temperatureC
 //     - dewpoint_c DOUBLE PRECISION NULL -> payload.dewpointC
 //     - wind_direction_degrees DOUBLE PRECISION NULL -> payload.windDirectionDegrees
 //     - wind_speed_kmh DOUBLE PRECISION NULL -> payload.windSpeedKmh
 //     - wind_gust_kmh DOUBLE PRECISION NULL -> payload.windGustKmh
 //     - barometric_pressure_pa DOUBLE PRECISION NULL -> payload.barometricPressurePa
-//     - sea_level_pressure_pa DOUBLE PRECISION NULL -> payload.seaLevelPressurePa
 //     - visibility_meters DOUBLE PRECISION NULL -> payload.visibilityMeters
 //     - relative_humidity_percent DOUBLE PRECISION NULL -> payload.relativeHumidityPercent
 //     - apparent_temperature_c DOUBLE PRECISION NULL -> payload.apparentTemperatureC
-//     - elevation_meters DOUBLE PRECISION NULL -> payload.elevationMeters
-//     - raw_message TEXT NULL -> payload.rawMessage
 //
-//  2. observation_cloud_layers (PK: event_id, layer_index)
-//
-//     - event_id TEXT -> observations.event_id / payload.cloudLayers[i]
-//     - layer_index INTEGER -> i (array position in payload.cloudLayers)
-//     - observed_at TIMESTAMPTZ -> payload.timestamp
-//     - base_meters DOUBLE PRECISION NULL -> payload.cloudLayers[i].baseMeters
-//     - amount TEXT NULL -> payload.cloudLayers[i].amount
-//
-//  3. observation_present_weather (PK: event_id, weather_index)
+//  2. observation_present_weather (PK: event_id, weather_index)
 //
 //     - event_id TEXT -> observations.event_id / payload.presentWeather[i]
 //     - weather_index INTEGER -> i (array position in payload.presentWeather)
@@ -90,7 +74,7 @@
 // Note: raw_text stores compact JSON text. Consumers that need the original
 // object should parse raw_text as JSON.
 //
-//  4. forecasts (PK: event_id)
+//  3. forecasts (PK: event_id)
 //
 //     - event_id TEXT -> event.id
 //     - event_kind TEXT -> event.kind
@@ -108,7 +92,7 @@
 //     - elevation_meters DOUBLE PRECISION NULL -> payload.elevationMeters
 //     - period_count INTEGER -> len(payload.periods)
 //
-//  5. forecast_periods (PK: run_event_id, period_index)
+//  4. forecast_periods (PK: run_event_id, period_index)
 //
 //     - run_event_id TEXT -> forecasts.event_id / payload.periods[i]
 //     - period_index INTEGER -> i (array position in payload.periods)
@@ -140,7 +124,7 @@
 //     - snowfall_depth_mm DOUBLE PRECISION NULL -> payload.periods[i].snowfallDepthMm
 //     - uv_index DOUBLE PRECISION NULL -> payload.periods[i].uvIndex
 //
-//  6. alert_runs (PK: event_id)
+//  5. alert_runs (PK: event_id)
 //
 //     - event_id TEXT -> event.id
 //     - event_kind TEXT -> event.kind
@@ -155,7 +139,7 @@
 //     - longitude DOUBLE PRECISION NULL -> payload.longitude
 //     - alert_count INTEGER -> len(payload.alerts)
 //
-//  7. alerts (PK: run_event_id, alert_index)
+//  6. alerts (PK: run_event_id, alert_index)
 //
 //     - run_event_id TEXT -> alert_runs.event_id / payload.alerts[i]
 //     - alert_index INTEGER -> i (array position in payload.alerts)
@@ -180,7 +164,7 @@
 //     - sender_name TEXT NULL -> payload.alerts[i].senderName
 //     - reference_count INTEGER -> len(payload.alerts[i].references)
 //
-//  8. alert_references (PK: run_event_id, alert_index, reference_index)
+//  7. alert_references (PK: run_event_id, alert_index, reference_index)
 //
 //     - run_event_id TEXT -> alert_runs.event_id / payload.alerts[i].references[j]
 //     - alert_index INTEGER -> i (array position in payload.alerts)
@@ -195,7 +179,7 @@
 //
 //   - WeatherObservation:
 //     read one row from observations, then join child rows by event_id ordered by
-//     layer_index / weather_index to rebuild cloudLayers and presentWeather arrays.
+//     weather_index to rebuild presentWeather arrays.
 //
 //   - WeatherForecastRun:
 //     read one row from forecasts, then join forecast_periods by run_event_id
diff --git a/internal/sinks/postgres/map.go b/internal/sinks/postgres/map.go
index 4365fb5..49311cb 100644
--- a/internal/sinks/postgres/map.go
+++ b/internal/sinks/postgres/map.go
@@ -37,7 +37,7 @@ func mapObservationEvent(e fkevent.Event) ([]fksinks.PostgresWrite, error) {
 	}
 
 	observedAt := obs.Timestamp.UTC()
-	writes := make([]fksinks.PostgresWrite, 0, 1+len(obs.CloudLayers)+len(obs.PresentWeather))
+	writes := make([]fksinks.PostgresWrite, 0, 1+len(obs.PresentWeather))
 
 	writes = append(writes, fksinks.PostgresWrite{
 		Table: tableObservations,
@@ -52,39 +52,20 @@ func mapObservationEvent(e fkevent.Event) ([]fksinks.PostgresWrite, error) {
 			"station_name":              nullableString(obs.StationName),
 			"observed_at":               observedAt,
 			"condition_code":            int(obs.ConditionCode),
-			"condition_text":            nullableString(obs.ConditionText),
 			"is_day":                    nullableBool(obs.IsDay),
-			"provider_raw_description":  nullableString(obs.ProviderRawDescription),
 			"text_description":          nullableString(obs.TextDescription),
-			"icon_url":                  nullableString(obs.IconURL),
 			"temperature_c":             nullableFloat64(obs.TemperatureC),
 			"dewpoint_c":                nullableFloat64(obs.DewpointC),
 			"wind_direction_degrees":    nullableFloat64(obs.WindDirectionDegrees),
 			"wind_speed_kmh":            nullableFloat64(obs.WindSpeedKmh),
 			"wind_gust_kmh":             nullableFloat64(obs.WindGustKmh),
 			"barometric_pressure_pa":    nullableFloat64(obs.BarometricPressurePa),
-			"sea_level_pressure_pa":     nullableFloat64(obs.SeaLevelPressurePa),
 			"visibility_meters":         nullableFloat64(obs.VisibilityMeters),
 			"relative_humidity_percent": nullableFloat64(obs.RelativeHumidityPercent),
 			"apparent_temperature_c":    nullableFloat64(obs.ApparentTemperatureC),
-			"elevation_meters":          nullableFloat64(obs.ElevationMeters),
-			"raw_message":               nullableString(obs.RawMessage),
 		},
 	})
 
-	for i, cl := range obs.CloudLayers {
-		writes = append(writes, fksinks.PostgresWrite{
-			Table: tableObservationCloudLayers,
-			Values: map[string]any{
-				"event_id":    e.ID,
-				"layer_index": i,
-				"observed_at": observedAt,
-				"base_meters": nullableFloat64(cl.BaseMeters),
-				"amount":      nullableString(cl.Amount),
-			},
-		})
-	}
-
 	for i, pw := range obs.PresentWeather {
 		rawText, err := compactJSONText(pw.Raw)
 		if err != nil {
diff --git a/internal/sinks/postgres/map_test.go b/internal/sinks/postgres/map_test.go
index dad0fd9..cdacf7e 100644
--- a/internal/sinks/postgres/map_test.go
+++ b/internal/sinks/postgres/map_test.go
@@ -16,28 +16,23 @@ import (
 func TestMapPostgresEventObservationStructPayload(t *testing.T) {
 	isDay := true
 	temp := 21.5
-	base := 1200.0
 	obs := model.WeatherObservation{
-		StationID:              "KSTL",
-		StationName:            "St. Louis",
-		Timestamp:              time.Date(2026, 3, 16, 19, 0, 0, 0, time.UTC),
-		ConditionCode:          model.WMOCode(1),
-		ConditionText:          "Mainly Sunny",
-		IsDay:                  &isDay,
-		ProviderRawDescription: "few clouds",
-		TextDescription:        "Mainly Sunny",
-		IconURL:                "https://example/icon.png",
-		TemperatureC:           &temp,
-		CloudLayers:            []model.CloudLayer{{BaseMeters: &base, Amount: "FEW"}},
-		PresentWeather:         []model.PresentWeather{{Raw: map[string]any{"a": 1, "b": "x"}}},
+		StationID:       "KSTL",
+		StationName:     "St. Louis",
+		Timestamp:       time.Date(2026, 3, 16, 19, 0, 0, 0, time.UTC),
+		ConditionCode:   model.WMOCode(1),
+		IsDay:           &isDay,
+		TextDescription: "few clouds",
+		TemperatureC:    &temp,
+		PresentWeather:  []model.PresentWeather{{Raw: map[string]any{"a": 1, "b": "x"}}},
 	}
 
 	writes, err := mapPostgresEvent(context.Background(), testEvent(standards.SchemaWeatherObservationV1, "observation", obs))
 	if err != nil {
 		t.Fatalf("mapPostgresEvent() error = %v", err)
 	}
-	if len(writes) != 3 {
-		t.Fatalf("mapPostgresEvent() writes len = %d, want 3", len(writes))
+	if len(writes) != 2 {
+		t.Fatalf("mapPostgresEvent() writes len = %d, want 2", len(writes))
 	}
 	if writes[0].Table != tableObservations {
 		t.Fatalf("writes[0].Table = %q, want %q", writes[0].Table, tableObservations)
@@ -45,13 +40,10 @@ func TestMapPostgresEventObservationStructPayload(t *testing.T) {
 	if got := writes[0].Values["station_id"]; got != "KSTL" {
 		t.Fatalf("observations station_id = %#v, want KSTL", got)
 	}
-	if writes[1].Table != tableObservationCloudLayers {
-		t.Fatalf("writes[1].Table = %q, want %q", writes[1].Table, tableObservationCloudLayers)
+	if writes[1].Table != tableObservationPresentWeather {
+		t.Fatalf("writes[1].Table = %q, want %q", writes[1].Table, tableObservationPresentWeather)
 	}
-	if writes[2].Table != tableObservationPresentWeather {
-		t.Fatalf("writes[2].Table = %q, want %q", writes[2].Table, tableObservationPresentWeather)
-	}
-	if got := writes[2].Values["raw_text"]; got != `{"a":1,"b":"x"}` {
+	if got := writes[1].Values["raw_text"]; got != `{"a":1,"b":"x"}` {
 		t.Fatalf("present_weather raw_text = %#v, want compact JSON", got)
 	}
 
diff --git a/internal/sinks/postgres/schema.go b/internal/sinks/postgres/schema.go
index 3c18ce7..2927213 100644
--- a/internal/sinks/postgres/schema.go
+++ b/internal/sinks/postgres/schema.go
@@ -10,7 +10,6 @@ import (
 
 const (
 	tableObservations              = "observations"
-	tableObservationCloudLayers    = "observation_cloud_layers"
 	tableObservationPresentWeather = "observation_present_weather"
 	tableForecasts                 = "forecasts"
 	tableForecastPeriods           = "forecast_periods"
@@ -59,23 +58,17 @@ func weatherPostgresSchema() fksinks.PostgresSchema {
 					{Name: "station_name", Type: "TEXT", Nullable: true},
 					{Name: "observed_at", Type: "TIMESTAMPTZ", Nullable: false},
 					{Name: "condition_code", Type: "INTEGER", Nullable: false},
-					{Name: "condition_text", Type: "TEXT", Nullable: true},
 					{Name: "is_day", Type: "BOOLEAN", Nullable: true},
-					{Name: "provider_raw_description", Type: "TEXT", Nullable: true},
 					{Name: "text_description", Type: "TEXT", Nullable: true},
-					{Name: "icon_url", Type: "TEXT", Nullable: true},
 					{Name: "temperature_c", Type: "DOUBLE PRECISION", Nullable: true},
 					{Name: "dewpoint_c", Type: "DOUBLE PRECISION", Nullable: true},
 					{Name: "wind_direction_degrees", Type: "DOUBLE PRECISION", Nullable: true},
 					{Name: "wind_speed_kmh", Type: "DOUBLE PRECISION", Nullable: true},
 					{Name: "wind_gust_kmh", Type: "DOUBLE PRECISION", Nullable: true},
 					{Name: "barometric_pressure_pa", Type: "DOUBLE PRECISION", Nullable: true},
-					{Name: "sea_level_pressure_pa", Type: "DOUBLE PRECISION", Nullable: true},
 					{Name: "visibility_meters", Type: "DOUBLE PRECISION", Nullable: true},
 					{Name: "relative_humidity_percent", Type: "DOUBLE PRECISION", Nullable: true},
 					{Name: "apparent_temperature_c", Type: "DOUBLE PRECISION", Nullable: true},
-					{Name: "elevation_meters", Type: "DOUBLE PRECISION", Nullable: true},
-					{Name: "raw_message", Type: "TEXT", Nullable: true},
 				},
 				PrimaryKey:  []string{"event_id"},
 				PruneColumn: "observed_at",
@@ -85,21 +78,6 @@ func weatherPostgresSchema() fksinks.PostgresSchema {
 					{Name: "idx_wf_obs_condition_code", Columns: []string{"condition_code"}},
 				},
 			},
-			{
-				Name: tableObservationCloudLayers,
-				Columns: []fksinks.PostgresColumn{
-					{Name: "event_id", Type: "TEXT REFERENCES observations(event_id) ON DELETE CASCADE", Nullable: false},
-					{Name: "layer_index", Type: "INTEGER", Nullable: false},
-					{Name: "observed_at", Type: "TIMESTAMPTZ", Nullable: false},
-					{Name: "base_meters", Type: "DOUBLE PRECISION", Nullable: true},
-					{Name: "amount", Type: "TEXT", Nullable: true},
-				},
-				PrimaryKey:  []string{"event_id", "layer_index"},
-				PruneColumn: "observed_at",
-				Indexes: []fksinks.PostgresIndex{
-					{Name: "idx_wf_obs_cloud_observed_at", Columns: []string{"observed_at"}},
-				},
-			},
 			{
 				Name: tableObservationPresentWeather,
 				Columns: []fksinks.PostgresColumn{
diff --git a/internal/sinks/postgres/schema_test.go b/internal/sinks/postgres/schema_test.go
index 719875a..cfad385 100644
--- a/internal/sinks/postgres/schema_test.go
+++ b/internal/sinks/postgres/schema_test.go
@@ -61,7 +61,6 @@ func TestWeatherPostgresSchemaShape(t *testing.T) {
 
 	wantTables := map[string]bool{
 		tableObservations:              true,
-		tableObservationCloudLayers:    true,
 		tableObservationPresentWeather: true,
 		tableForecasts:                 true,
 		tableForecastPeriods:           true,
diff --git a/model/observation.go b/model/observation.go
index f61a1de..57672ac 100644
--- a/model/observation.go
+++ b/model/observation.go
@@ -10,18 +10,9 @@ type WeatherObservation struct {
 	Timestamp   time.Time `json:"timestamp"`
 
 	// Canonical internal representation (provider-independent).
-	ConditionCode WMOCode `json:"conditionCode"`
-	ConditionText string  `json:"conditionText,omitempty"`
-	IsDay         *bool   `json:"isDay,omitempty"`
-
-	// Provider-specific “evidence” for troubleshooting mapping and drift.
-	ProviderRawDescription string `json:"providerRawDescription,omitempty"`
-
-	// Human-facing (legacy / transitional)
-	TextDescription string `json:"textDescription,omitempty"`
-
-	// Provider-specific (legacy / transitional)
-	IconURL string `json:"iconUrl,omitempty"`
+	ConditionCode   WMOCode `json:"conditionCode"`
+	IsDay           *bool   `json:"isDay,omitempty"`
+	TextDescription string  `json:"textDescription,omitempty"`
 
 	// Core measurements (nullable)
 	TemperatureC *float64 `json:"temperatureC,omitempty"`
@@ -32,22 +23,12 @@ type WeatherObservation struct {
 	WindGustKmh          *float64 `json:"windGustKmh,omitempty"`
 
 	BarometricPressurePa *float64 `json:"barometricPressurePa,omitempty"`
-	SeaLevelPressurePa   *float64 `json:"seaLevelPressurePa,omitempty"`
 	VisibilityMeters     *float64 `json:"visibilityMeters,omitempty"`
 
 	RelativeHumidityPercent *float64 `json:"relativeHumidityPercent,omitempty"`
 	ApparentTemperatureC    *float64 `json:"apparentTemperatureC,omitempty"`
 
-	ElevationMeters *float64 `json:"elevationMeters,omitempty"`
-	RawMessage      string   `json:"rawMessage,omitempty"`
-
 	PresentWeather []PresentWeather `json:"presentWeather,omitempty"`
-	CloudLayers    []CloudLayer     `json:"cloudLayers,omitempty"`
-}
-
-type CloudLayer struct {
-	BaseMeters *float64 `json:"baseMeters,omitempty"`
-	Amount     string   `json:"amount,omitempty"`
 }
 
 type PresentWeather struct {
diff --git a/standards/wmo.go b/standards/wmo.go
index b4f4232..caa6c4d 100644
--- a/standards/wmo.go
+++ b/standards/wmo.go
@@ -21,7 +21,7 @@ type WMODescription struct {
 }
 
 // WMODescriptions is the canonical internal mapping of WMO code -> day/night text.
-// These are used to populate model.WeatherObservation.ConditionText.
+// These are used to populate canonical text fields derived from WMO codes.
 var WMODescriptions = map[model.WMOCode]WMODescription{
 	0:  {Day: "Sunny", Night: "Clear"},
 	1:  {Day: "Mainly Sunny", Night: "Mainly Clear"},
@@ -56,7 +56,8 @@ var WMODescriptions = map[model.WMOCode]WMODescription{
 // WMOText returns the canonical text description for a WMO code.
 // If isDay is nil, it prefers the Day description (if present).
 //
-// This is intended to be used by drivers after they set ConditionCode.
+// This is intended to be used by drivers after they set ConditionCode when they
+// need a human-readable description.
 func WMOText(code model.WMOCode, isDay *bool) string {
 	if code == model.WMOUnknown {
 		return "Unknown"