NWS Active Alerts (Current Weather Warnings for a U.S. Coordinate)

nws/active-alerts

The weather watches, warnings and advisories the National Weather Service currently has in effect for a coordinate: event name, severity, urgency, headline, description, instructions, affected areas and when each starts and ends. An empty list means nothing is in effect there. US only: coordinates outside the United States and its territories return a clear error. National Weather Service data as served by Omnial, not an official NWS product.

activeper callv1

Price

$0.00273 per call

You pay the price shown. If a call turns out to cost more than its quote, you pay the actual price, capped at twice the quote. No monthly minimum. Top-ups start at $5.

Data source

National Weather Service

Data from the U.S. National Weather Service (NOAA), public domain per weather.gov/disclaimer. Served by Omnial; not an official NWS product and not endorsed by NOAA or NWS.

Use it

Five steps: search, inspect, learn, run, settle. No per-tool setup; your agent reaches this tool through the meta-tools it already has.

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agent

// 1. search: find the tool
omnial_search({ query: "what you need" })

// 2. inspect: price and input schema
omnial_inspect({ tool: "nws/active-alerts" })

// 3. learn: read the usage guide at runtime
omnial_learn({ tool: "nws/active-alerts" })

// 4. run: price the exact call first, then run it
omnial_execute({ tool: "nws/active-alerts", input: { /* see input_schema */ }, dry_run: true })
omnial_execute({ tool: "nws/active-alerts", input: { /* ... */ } })

// 5. settle: the call is charged when it finishes, nothing to do

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Pricing

Every charge this tool can incur.

Charge	Price
Per call	$0.00273

Updated: Oct 18, 2026

Input and output schemas

Input schema

input_schema.json

{
  "type": "object",
  "required": [
    "latitude",
    "longitude"
  ],
  "properties": {
    "latitude": {
      "type": "number",
      "maximum": 90,
      "minimum": -90,
      "description": "Latitude in decimal degrees, north positive."
    },
    "longitude": {
      "type": "number",
      "maximum": 180,
      "minimum": -180,
      "description": "Longitude in decimal degrees, west negative."
    }
  },
  "additionalProperties": false
}

Output schema

output_schema.json

{
  "type": "object",
  "required": [
    "features"
  ],
  "properties": {
    "title": {
      "type": "string",
      "description": "NWS's own description of the query."
    },
    "updated": {
      "type": "string",
      "description": "When NWS last refreshed the alert list, ISO 8601."
    },
    "features": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "properties": {
            "type": "object",
            "description": "The alert itself: event, severity, urgency, headline, description, instruction, areaDesc, onset, ends and more.",
            "additionalProperties": true
          }
        },
        "additionalProperties": true
      },
      "description": "One entry per active alert; empty when none is in effect."
    }
  },
  "description": "A GeoJSON FeatureCollection of the alerts in effect at the coordinate.",
  "additionalProperties": true
}