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This service does a number of different things with Local Storm Reports.
Changelog
- 2025-05-21: Added product_id to output attributes.
- 2024-12-22: Added hours parameter to allow for a set time window prior to the ets parameter, which defaults to now.
- 2024-10-24: Added crude spatial bounds based parameters of east, west, north, and south.
- 2024-09-23: Added qualifier to output attributes, this represents the Measured, Estimated, or Unknonw qualifier for the report.
Example Requests
Provide all Local Storm Reports valid within the past 72 hours for Illinois.
https://mesonet.agron.iastate.edu/geojson/lsr.geojson?states=IL&hours=72
Provide all Local Storm Reports for Wisconsin on 13 July 2024. Note that a UTC date period is specified that equates to the US Central date.
Provide the LSRs associated with Des Moines Tornado Warning 47 and include any coincident warnings with each LSR report.
Provide LSRs from NWS Des Moines and Davenport for 21 May 2024 UTC
Provide all 2024 LSRs for a bounding box approximately covering Iowa.
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. |
| inc_ap | boolean | Include any associated warnings in the output. |
| eventid | integer | If provided, use the given eventid to find LSRs for. |
| phenomena | string or null | Two character (uppercase) VTEC phenomena code. |
| significance | string | One character (uppercase) VTEC significance code. |
| states | array or null | If provided, use the given states to find LSRs for. |
| ets | string or null | End timestamp. |
| sts | string or null | Start Timestamp. |
| hours | integer or null | If provided, number of hours prior to ets (default now) to provide LSRs for. |
| wfo | string or null | If provided, use the given WFO to find LSRs for. |
| wfos | array or null | If provided, use the given WFOs to find LSRs for. |
| year | integer | Year between 1986 and the current year for which the IEM database may have VTEC records. |
| east | number or null | Longitude (decimal degrees) of point of interest |
| west | number or null | Longitude (decimal degrees) of point of interest |
| north | number or null | Latitude (decimal degrees) of point of interest |
| south | number or null | Latitude (decimal degrees) of point of interest |
| fmt | string | Output format (fixed to geojson). |