# NWS active weather alerts US

Active watches, warnings and advisories from the U.S. Takes area, point, zone and more, all optional. Served by National Weather Service.

Active watches, warnings and advisories from the U.S. National Weather Service for a state or marine area, a point or a forecast zone: event, severity, urgency, certainty, headline, description, instructions, onset and expiry, affected areas. Filter further by event (e.g. 'Winter Storm Warning') or severity. United States and its waters only; an empty list means no active alert.

- Tool ID: `nws/active-alerts`
- Name in the catalog: NWS active weather alerts (US)
- Provider: [National Weather Service](/providers/nws.md)
- Capability: [Weather forecast & history](/tools/weather/forecast.md)
- Price: no charge per call
- Authentication: an authorised Agentik workspace is required for execution, including zero-price tools.

## Pricing contract

No charge per call. A workspace is still needed so your agent can call it.


```json
{
  "model": "per_call",
  "amountUsd": 0
}
```

## Complete input schema


```json
{
  "type": "object",
  "properties": {
    "area": {
      "type": "string",
      "pattern": "^[A-Z]{2}$",
      "description": "US state, territory or marine area code, e.g. 'TX'"
    },
    "point": {
      "type": "string",
      "pattern": "^-?[0-9]{1,2}(\\.[0-9]{1,4})?,-?[0-9]{1,3}(\\.[0-9]{1,4})?$",
      "description": "'latitude,longitude', up to 4 decimals, e.g. '29.7604,-95.3698'"
    },
    "zone": {
      "type": "string",
      "pattern": "^[A-Z]{2}[CZ][0-9]{3}$",
      "description": "Forecast or county zone id, e.g. 'TXZ213'"
    },
    "event": {
      "type": "string",
      "minLength": 3,
      "maxLength": 80,
      "description": "Event name, e.g. 'Flood Warning'"
    },
    "severity": {
      "type": "string",
      "enum": [
        "Extreme",
        "Severe",
        "Moderate",
        "Minor",
        "Unknown"
      ],
      "description": "Severity, e.g. 'Severe'"
    },
    "urgency": {
      "type": "string",
      "enum": [
        "Immediate",
        "Expected",
        "Future",
        "Past",
        "Unknown"
      ],
      "description": "Urgency, e.g. 'Immediate'"
    }
  },
  "anyOf": [
    {
      "required": [
        "area"
      ]
    },
    {
      "required": [
        "point"
      ]
    },
    {
      "required": [
        "zone"
      ]
    }
  ],
  "additionalProperties": false
}
```

## Published example

This is the provider tool’s published example. Replace example values with the user’s requested inputs, respecting the schema; do not execute an example merely to test a connection.


```json
{
  "tool_id": "nws/active-alerts",
  "input": {
    "area": "AK"
  }
}
```

## Execute and retrieve

Inspect again before execution, explain the price and obtain the required authority. Use MCP run_tool or POST /v1/run with this tool ID, valid input and an idempotency key. Save the returned run ID and follow the actual state. If Agentik answers that the tool is temporarily unavailable, do not retry it blindly; use discovery to propose an alternative.

A partial or uncertain result can still have consumed provider resources. Consult [billing](/docs/billing.md), [idempotency](/docs/idempotency.md) and [asynchronous results](/docs/async.md).

Licence: US Government public data (public domain).

Attribution: Data from the U.S. National Weather Service (weather.gov).

[Provider documentation](https://www.weather.gov/documentation/services-web-api)

[REST inspection](https://api.agentik.cc/v1/tools/nws/active-alerts) · [OpenAPI](/openapi.json) · [Connection guide](/connect.md)

---

[HTML page](/providers/nws/active-alerts) · [Agent index](/llms.txt)