Storm Sample

Storm hazards covering marine/coastal storm warnings, sourced from NWS and other agencies. Note: This type covers general storm warnings distinct from tropical cyclones, winter storms, and severe weather categories. These hazards aggregate multiple NWS alert products into a single consolidated hazard record.

Storm-Specific Properties

Incident Data

The incident.properties object for storm hazards follows the NWS alert format, containing metadata from the issuing weather service offices about the storm event and its expected conditions.

Key incident properties for storms (NWS alert format) include:

• senderName - Name of the issuing authority (e.g., "NWS Fairbanks AK and NWS Anchorage AK")

• headline - Brief summary of the alert (e.g., "Storm Warnings -- Very strong winds, very high seas...")

• description - Detailed description including individual alert text (may be very long for multi-alert events)

• severity - Severity classification (e.g., "WARNING")

• urgency - Urgency level (e.g., "Immediate")

• certainty - Certainty classification (e.g., "Observed")

• event - Event type descriptor ("Storm")

• messagePhenomena - NWS phenomena code ("SR" for Storm)

• messageSignificance - NWS significance code ("W" for Warning)

• officeId - Issuing NWS office identifier (e.g., "PAFC")

• eventId - NWS event identifier (e.g., "PAFC-SR-W-1054")

• locationName - Detailed description of affected geographic areas

• areaDescription - Human-readable area description matching locationName

• affectedZoneIds - List of NWS zone identifiers covered by the alert

• geocode - SAME and UGC zone code mappings for the alert area

Features

The features property is null for this storm hazard. When NWS alert features are available through the enrichment pipeline, this property may contain CAP_INFO features with alert polygon geometries representing individual alert areas.

Exposure Areas

Single level - source-provided alert area. The exposureAreas FeatureCollection contains one feature with an exposureLevel property (e.g., level 2 for STRONG) covering the combined geographic extent of all consolidated storm warning zones.

Sample Response

{
  "name": [
    {
      "locale": "en",
      "value": "Storm - Bering Sea and Alaska coastal waters, United States"
    }
  ],
  "description": [
    {
      "locale": "en",
      "value": "NWS Fairbanks AK and NWS Anchorage AK has issued a Storm warning for February 16, 2026 14:00:00 UTC through February 17, 2026 14:00:00 UTC...."
    }
  ],
  "severity": "WARNING",
  "category": "EVENT",
  "incident": {
    "uuid": "5d2cc257-c2dd-40e2-aaae-c7b772c1b32c",
    "type": "STORM",
    "sourceId": 1801,
    "sourceRecordId": "5e867d38-e8b3-42a3-bb82-2c1ad133ebe5",
    "properties": {
      "senderName": "NWS Fairbanks AK and NWS Anchorage AK",
      "headline": "Storm Warnings -- Very strong winds, very high seas, and snow/rain for Bering Sea and nearby Alaska coastal waters through Feb 16 (AKST)",
      "description": "...",
      "severity": "WARNING",
      "urgency": "Immediate",
      "certainty": "Observed",
      "event": "Storm",
      "messagePhenomena": "SR",
      "messageSignificance": "W",
      "officeId": "PAFC",
      "eventId": "PAFC-SR-W-1054",
      "locationName": "Saint Matthew Island Waters; Bering Sea Offshore West of 180 and East of the International Date Line; Bering Sea Offshore 171W to 180 and North of 56N; North and West of Nunivak Island; Southwest of Saint Lawrence Island from 15 to 100 NM",
      "areaDescription": "Saint Matthew Island Waters; Bering Sea Offshore West of 180 and East of the International Date Line; Bering Sea Offshore 171W to 180 and North of 56N; North and West of Nunivak Island; Southwest of Saint Lawrence Island from 15 to 100 NM",
      "affectedZoneIds": "[PKZ767, PKZ412, PKZ765, PKZ411, PKZ851]",
      "geocode": "{SAME=[058767, 058411, 058851, 058765, 058412], UGC=[PKZ767, PKZ412, PKZ765, PKZ411, PKZ851]}",
      "name": "Storm - Bering Sea and Alaska coastal waters, United States",
      "category": "Met",
      "status": "Actual",
      "messageType": "Alert",
      "messageAction": "NEW_EVENT",
      "effectiveAt": "2026-02-15T12:29:00Z",
      "endedAt": "2026-02-17T14:00:00Z",
      "sentAt": "2026-02-16T12:45:00Z",
      "response": "Avoid",
      "isExpired": false,
      "..."
    }
  },
  "uuid": "f6b749a0-c431-4a38-81cf-cdf37d6d6fcd",
  "comment": null,
  "createdAt": 1771248068,
  "relatedHazards": [],
  "longitude": -177.11661,
  "latitude": 57.74248,
  "version": 11,
  "alertGeometry": {
    "type": "FeatureCollection",
    "features": [
      {
        "type": "Feature",
        "geometry": {
          "type": "MultiPolygon",
          "coordinates": [...]
        },
        "properties": null
      }
    ]
  },
  "features": null,
  "exposureAreas": {
    "type": "FeatureCollection",
    "features": [
      {
        "type": "Feature",
        "geometry": {
          "type": "MultiPolygon",
          "coordinates": [...]
        },
        "properties": {
          "exposureLevel": 2
        }
      }
    ]
  },
  "exposureAssessment": {
    "population": 73933900.0,
    "capital": 6570214261100.0,
    "exposureLevels": [
      {
        "level": "2",
        "data": {
          "population": 73933900.0,
          "capital": 6570214261100.0,
          "foodNeedsUnit": "CAL",
          "foodNeeds": 19047000000.0,
          "waterNeedsUnit": "liter",
          "waterNeeds": 27210000.0,
          "wasteNeedsUnit": "100 liter",
          "wasteNeeds": 907000.0,
          "shelterNeedsUnit": "sq meters",
          "shelterNeeds": 31291500.0
        },
        "exposureDescription": "STRONG"
      }
    ],
    "hazardUuid": "",
    "hazardType": "",
    "version": "",
    "timestamp": "1771247751609",
    "exposureDescription": "",
    "foodNeedsUnit": "CAL",
    "foodNeeds": 19047000000.0,
    "waterNeedsUnit": "liter",
    "waterNeeds": 27210000.0,
    "wasteNeedsUnit": "100 liter",
    "wasteNeeds": 907000.0,
    "shelterNeedsUnit": "sq meters",
    "shelterNeeds": 31291500.0
  },
  "type": "STORM",
  "creator": "RICHTER",
  "source": null,
  "startedAt": 1771250400,
  "updatedAt": 1771247751,
  "endedAt": 1771336800
}

Note: Coordinate arrays have been replaced with [...] for brevity. In actual API responses, alertGeometry and exposureAreas contain complete GeoJSON coordinate arrays. The incident.properties.description field has been replaced with "..." as it contains the full text of all 11 consolidated NWS alert products. The features property is null for this hazard. The source field is null for NWS storm hazards.