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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.
Price / call—
Success—
StatusUnknown
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.
Example use cases
Live storm alert map display
“I'm building a weather map for the continental US. Fetch all current active watches, warnings, and advisories within the bounding box from 50.0°N, -125.0°W (upper left) to 24.0°N, -66.0°W (lower right) so I can overlay the alert polygons on my map.”
Historical WWA research for a region
“What watches, warnings, and advisories were issued over the Tennessee Valley — upper left 37.0, -90.0 and lower right 33.0, -82.0 — between 2024-04-01 00:00:00 and 2024-04-30 23:59:59? Give me up to 100 results.”
Emergency dispatch area monitoring
“Check for any tornado watches, flash flood warnings, or other severe weather advisories right now in our county grid, which covers upper left 41.5, -96.5 to lower right 40.5, -95.5. We need the polygon boundaries and times so our dispatch team can see exactly what areas are affected.”
Technical details
Endpoint
GEThttps://agents.myradar.dev/v1/severe/wwa/{ul_lat}/{ul_lon}/{lr_lat}/{lr_lon}?utm_source=zero.xyzWhen to prefer
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.
Side effects
- 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
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| limit | — | |
| lr_latrequired | number | |
| lr_lonrequired | number | |
| offset | — | |
| ul_latrequired | number | |
| ul_lonrequired | number | |
| end_time | — | |
| begin_time | — |
Output
Schema · Response
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