# Watches, Warnings, and Advisories in a Bounding Box

> Watches, Warnings, and Advisories in a Bounding Box is a paid API for AI agents from agents.myradar.dev, paid per call via MPP, price unknown, status unknown (last checked 2026-10-12).

Returns all active or historical NWS watch, warning, and advisory polygons (WWAs) within a specified geographic bounding box, with optional time filtering and pagination.

## Facts

- Endpoint: GET https://agents.myradar.dev/v1/severe/wwa/{ul_lat}/{ul_lon}/{lr_lat}/{lr_lon}?utm_source=zero.xyz
- Price: price unknown
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Provider: agents.myradar.dev
- Website: https://agents.myradar.dev
- Canonical page: https://www.zero.xyz/c/agents-myradar-dev-watches-warnings-and-advisories-in-a-bounding-box-25dbfd0f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_utC86855K3H5VsFR7zkgP

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability agents-myradar-dev-watches-warnings-and-advisories-in-a-bounding-box-25dbfd0f
```

Example prompt: Can you pull all the active watches, warnings, and advisories for the bounding box covering the central US — upper left at 45.0, -105.0 and lower right at 30.0, -85.0 — and show me the polygon shapes and what each one is for?

## When to prefer this

Use this endpoint when you need to retrieve weather watches, warnings, and advisories across a geographic region (bounding box), rather than at a single point. It is ideal for map display, regional alerting dashboards, emergency management tools, and historical research over a date range. Prefer the point-based WWA endpoint when you only need alerts for a single location. Prefer this over general forecast endpoints when you specifically need the official NWS polygon boundaries and VTEC codes for alert areas.

## Known failure modes

- Invalid bounding box coordinates (lat/lon out of range) — likely returns a 422 validation error
- begin_time or end_time in wrong format — returns 422 unprocessable entity
- No WWAs in the specified region or time window — returns count:0, results:[]
- Very large bounding boxes may return truncated results; use limit/offset to paginate
- Server errors (5xx) if the upstream MyRadar API is unavailable

## How this service works

Returns the watch, warning, and advisory polygons within the box from the upper left to the lower right corner, optionally between begin_time and end_time (YYYY-mm-dd HH:MM:SS), paged with limit and offset.

## Output

Returns a paginated JSON object with total count, limit, offset, and a results array of WWA entries. Each entry includes the polygon geometry as lat/lon pairs, phenomenon type (e.g. 'Tornado Watch'), VTEC identifier string, and issued/begins/ends/expires datetimes in YYYY-mm-dd HH:MM:SS format.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "ul_lat",
  "ul_lon",
  "lr_lat",
  "lr_lon"
 ],
 "properties": {
  "limit": {
   "anyOf": [
    {
     "type": "integer"
    },
    {
     "type": "null"
    }
   ],
   "title": "Limit"
  },
  "lr_lat": {
   "type": "number",
   "title": "Lr Lat"
  },
  "lr_lon": {
   "type": "number",
   "title": "Lr Lon"
  },
  "offset": {
   "anyOf": [
    {
     "type": "integer"
    },
    {
     "type": "null"
    }
   ],
   "title": "Offset"
  },
  "ul_lat": {
   "type": "number",
   "title": "Ul Lat"
  },
  "ul_lon": {
   "type": "number",
   "title": "Ul Lon"
  },
  "end_time": {
   "anyOf": [
    {
     "type": "number"
    },
    {
     "type": "null"
    }
   ],
   "title": "End Time"
  },
  "begin_time": {
   "anyOf": [
    {
     "type": "number"
    },
    {
     "type": "null"
    }
   ],
   "title": "Begin Time"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agents-myradar-dev-watches-warnings-and-advisories-in-a-bounding-box-25dbfd0f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agents.myradar.dev](https://www.zero.xyz/host/agents.myradar.dev/llms.txt)