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This service provides a GeoJSON representation of current Convective SIGMETs.
Changelog
- 2025-05-13: Added sts and ets parameters to filter SIGMETs by time, must be less than 32 days in duration. Specifies the period of issuance.
- 2025-05-13: Added at parameter to provide SIGMETs at a specific time.
- 2024-08-14: Documentation Update
Example Requests
Get the current Convective SIGMETs
https://mesonet.agron.iastate.edu/geojson/convective_sigmet.geojson
Get the SIGMETs valid at 6 UTC on 10 Aug 2024
https://mesonet.agron.iastate.edu/geojson/convective_sigmet.geojson?at=2024-08-10T06:00:00Z
Get the SIGMETs valid between 6 UTC and 12 UTC on 10 Aug 2024
CGI Arguments
The following table lists the CGI arguments that are accepted by this service. A HTTP GET request is required. Fields of type Multi-Params or CSV value can accept either a comma separated list or multiple parameter and value combinations. For example, ?foo=1&foo=2 is equivalent to ?foo=1,2.
| Field | Type | Description |
|---|---|---|
| callback | string | JSONP callback function |
| at | string | SIGMETs valid at given time, in ISO8601 format |
| ets | string | SIGMETs valid before time, in ISO8601 format |
| sts | string | SIGMETs valid after time, in ISO8601 format |