Weather Alerts API

GET

Check active tornado, storm, flood and winter weather warnings for any US location.

Weather Alerts returns the severe weather warnings, watches and advisories in effect right now for any point or state in the United States, straight from the National Weather Service. Each alert names the event, how severe and urgent it is, the area covered, when it starts and ends, and what to do.

Try it — live request, no key required

Request
GETapi.apiverve.com/v1/weatheralerts
Verification
Format

No key required to try it. Get a key to use it in your app.

Example
{
  "status": "ok",
  "error": null,
  "data": {
    "location": {
      "state": "TX"
    },
    "count": 2,
    "highestSeverity": "Severe",
    "alerts": [
      {
        "id": "urn:oid:2.49.0.1.840.0.f9aca49ebcd46d4148ecadc4f42f00d6fee04ca6.001.1",
        "event": "Flood Warning",
        "headline": "Flood Warning issued October 2 at 1:51PM CDT until October 3 at 2:51AM CDT by NWS Fort Worth TX",
        "summary": "FLOOD WARNING NOW IN EFFECT UNTIL LATE TONIGHT",
        "severity": "Severe",
        "urgency": "Immediate",
        "certainty": "Observed",
        "response": "Avoid",
        "messageType": "Update",
        "area": "Dallas, TX",
        "issuedBy": "NWS Fort Worth TX",
        "sent": "2026-10-02T13:51:00-05:00",
        "onset": "2026-10-02T13:51:00-05:00",
        "expires": "2026-10-03T03:00:00-05:00",
        "ends": "2026-10-03T02:51:00-05:00",
        "description": "...The Flood Warning continues for the following rivers in Texas...\n\nTrinity River At Dallas affecting Dallas County.\n\n* WHAT...Minor flooding is occurring and minor flooding is forecast.\n\n* WHERE...Trinity River at Dallas.\n\n* WHEN...Until late tonight.\n\n* IMPACTS...At 30.0 feet, Minor lowland flooding will begin, and\ntrails along the river begin to flood.\n\n* ADDITIONAL DETAILS...\n- At 1:30 PM CDT Friday the stage was 30.9 feet.\n- Forecast...The river is expected to fall below flood stage this\nafternoon and continue falling to 12.7 feet early Wednesday\nafternoon.\n- Bankfull stage is 30.0 feet.\n- Flood stage is 30.0 feet.",
        "instruction": "Do not drive cars through flooded areas. Caution is urged when\nwalking near riverbanks.\n\nAdditional information is available at water.noaa.gov/wfo/fwd.",
        "geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -96.93,
                32.75
              ],
              [
                -96.93,
                32.81
              ],
              [
                -96.83,
                32.83
              ],
              [
                -96.71,
                32.75
              ],
              [
                -96.76,
                32.69
              ],
              [
                -96.87,
                32.78
              ],
              [
                -96.93,
                32.75
              ]
            ]
          ]
        }
      },
      {
        "id": "urn:oid:2.49.0.1.840.0.b7cdd851a493afa58b5cf5fc13948ba8a35d2b25.001.1",
        "event": "Flood Watch",
        "headline": "Flood Watch issued October 2 at 1:36AM CDT until October 2 at 7:00PM CDT by NWS Corpus Christi TX",
        "summary": "FLOOD WATCH REMAINS IN EFFECT THROUGH THIS EVENING",
        "severity": "Severe",
        "urgency": "Future",
        "certainty": "Possible",
        "response": "Prepare",
        "messageType": "Update",
        "area": "La Salle; McMullen; Live Oak; Bee; Goliad; Victoria; Webb; Duval; Jim Wells; Inland Kleberg; Inland Nueces; Inland San Patricio",
        "issuedBy": "NWS Corpus Christi TX",
        "sent": "2026-10-02T01:36:00-05:00",
        "onset": "2026-10-02T01:36:00-05:00",
        "expires": "2026-10-02T19:00:00-05:00",
        "ends": "2026-10-02T19:00:00-05:00",
        "description": "* WHAT...Flooding caused by excessive rainfall continues to be\npossible.\n\n* WHERE...A portion of south Texas, including the following areas,\nBee, Duval, Goliad, Inland Kleberg, Inland Nueces, Inland San\nPatricio, Jim Wells, La Salle, Live Oak, McMullen, Victoria and\nWebb.\n\n* WHEN...Through this evening.\n\n* IMPACTS...Excessive runoff may result in flooding of rivers,\ncreeks, streams, and other low-lying and flood-prone locations.\nFlooding may occur in poor drainage and urban areas.\n\n* ADDITIONAL DETAILS...\n- Flooding caused by excessive rainfall is possible. Additional\nrainfall totals of 1-3 inches with isolated higher amounts will\nfall over areas that have already seen 2-4\" of rain within the\nwatch area.\n- http://www.weather.gov/safety/flood",
        "instruction": "You should monitor later forecasts and be alert for possible Flood\nWarnings. Those living in areas prone to flooding should be prepared\nto take action should flooding develop.",
        "geometry": null
      }
    ]
  }
}

About the Weather Alerts API

Send a latitude and longitude for the alerts covering one place, or a two-letter state code for everything in effect across the state. Every plan gets the event, severity, urgency, area, timing and safety instructions. Paid plans add the full forecaster description and the warning polygon as GeoJSON, ready to draw on a map.

What people use it for

Field Crew Safety
Dispatch and workforce apps check each job site for active tornado, lightning and flood warnings before sending crews out, and pull workers back when a warning is issued for their location.
Event and Venue Operations
Outdoor venues and event organizers watch for severe thunderstorm and high wind warnings at their exact location to trigger shelter plans and delays early.
Logistics and Fleet Routing
Fleet software checks warnings along delivery stops and depots to reroute around winter storms, flooding and dust storms before drivers reach them.
Property and Home Monitoring
Smart home and property management apps notify owners when a freeze, flood or hurricane warning covers a home so they can act before damage happens.
Weather Apps and Widgets
Weather apps draw storm-based warning polygons on their maps and show the most severe alert first, with the forecaster's own instructions.

Ways to call it

One endpoint, many ways in — REST with JSON, XML, YAML and CSV, plus GraphQL and an MCP interface for AI agents.

JSON
Default REST response
XML
Markup format
YAML
Human-readable
CSV
Tabular export
Beta
GraphQL
Query language
New
MCP
For AI agents

Other ways to use Weather Alerts

Same data, same APIVerve account, same credit balance — one key works on all of them.

Questions.

Common questions about the Weather Alerts API.

Read the docs →
Which locations does Weather Alerts cover?
The United States and its territories, which is the National Weather Service's coverage. A point outside it returns a 400 that says so, rather than an empty list that looks like calm weather.
Does a point lookup return alerts for the whole county?
It returns the alerts whose area covers that exact point. Storm-based warnings such as tornado and severe thunderstorm warnings cover a polygon drawn around the storm, so a town on the edge of a county may correctly get no warning while its neighbor does.
How current are the alerts?
Responses are cached for at most two minutes. Only actual, current messages are returned: test messages and cancellations are dropped, and alerts update in place as the National Weather Service revises them.
How far does the Starter plan go for alert checks?
Each lookup costs 5 credits, so the Starter plan's 200,000 monthly credits cover 40,000 alert checks, about $0.00075 each. The Free plan's 200 credits cover 40 checks for evaluation.
What do paid plans add?
The full forecaster description of each alert and its warning polygon as GeoJSON. The event, severity, urgency, area, timing and safety instructions are included on every plan.
Can I show these alerts in a commercial app?
Yes, on any plan. The alerts are issued by the National Weather Service, a US government source, and you may display them in customer-facing products.

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