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Documentation for /json/ibw_tags.py
This service returns a JSON representation of Impact Based Warning Tags (IBW) for a given year and WFO/State identifier.
Changelog
- 2026-03-03: Legacy gentime root attribute was removed. Use the generated_at parameter.
- 2025-08-14: Added support to query by state
Usage Examples
Provide all 2024 warnings from Omaha with the CONSIDERABLE damage tag.
https://mesonet.agron.iastate.edu/json/ibw_tags.py?year=2024&wfo=OAX&damagetag=CONSIDERABLE
Provide all 2024 warnings for Iowa with the destructive damage tag.
https://mesonet.agron.iastate.edu/json/ibw_tags.py?year=2024&state=IA&damagetag=DESTRUCTIVE
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 or null | Legacy JSON-P style callback. It is likely best to not depend on this usage. The IEM website has a permissive CORS. |
| damagetag | string or null | Damage Tag |
| state | string or null | Two letter (uppercase) United States code |
| wfo | string or null | WFO Identifier |
| year | integer (required) | Year to query |