This page allows you to generate a GIS shapefile of NWS issued Local Storm Reports for a time period of your choice. Please be sure to read the archive status and dbf schema below. The IEM's archive is certainly not complete or official.
If you are looking for a real-time source of lsrs, you can find with the following files generated every 5 minutes: ESRI Shapefile, Comma Delimited, GeoJSON.
Looking to automate the downloading of LSRs?
You can use the following URI form to get the most recent number of seconds
worth of LSRs. Note that these times are based on the valid time of the LSR and
not the issuance of the text product itself that contained the LSR.
https://mesonet.agron.iastate.edu/cgi-bin/request/gis/lsr.py?wfo=ALL&recent=86400&fmt=csv
https://mesonet.agron.iastate.edu/cgi-bin/request/gis/lsr.py?wfo=DMX,DVN&recent=86400&fmt=csv
https://mesonet.agron.iastate.edu/cgi-bin/request/gis/lsr.py?state=IA&recent=86400&fmt=csv
Omit the fmt=csv
portion to return the zipped shapefile.
Example to fetch a month's worth of data
https://mesonet.agron.iastate.edu/cgi-bin/request/gis/lsr.py?wfo=JAN&sts=2020-08-01T00:00Z&ets=2020-09-01T00:00Z&fmt=csv
Backend documentation exists for those wishing to script against this service.
Shapefile DBF schema:
VALID Timestamp of LSR in GMT/UTC time MAG Magnitude value of the LSR WFO Weather Forecast Office originating the LSR TYPECODE 1 character identifier of the report type, IEM specific TYPETEXT Textual value of LSR type used in report CITY Location used for the LSR COUNTY County/Parish of the LSR city STATE Two character state abbreviation SOURCE Who reported the LSR REMARK Text summary with the LSR LAT Latitude LON Longitude UGC IEM computed NWS UGC code (6 character), sometimes null UGCNAME IEM computed NWS UGC name (128 character), sometimes null QUALIFY 1 char describing if the MAG is Estimated, Measured, or Unknown
Archive notes:
- Before 1 Dec 2006, there was no differentiation between Snow and Sleet reports.
- 18 July 2022: Added output fields that attempt to cross reference NWS UGC County/Zones database to the referenced county/state found in the LSR text. This all is sub-optimal, but works in 99% of cases.
Publications Citing IEM Data (View All)
These are the most recent 10 publications that have cited the usage of data from this page. This list is not exhaustive, so please let us know if you have a publication that should be added.
- Bower, E., M. Erickson, et al. 2024, Objective Verification of the Weather Prediction Center’s Mesoscale Precipitation Discussions. Weather and Forecasting. Volume 39, Issue 6. https://doi.org/10.1175/WAF-D-23-0199.1
- Hill, A., C. Weiss, et al. 2021, Influence of a Portable Near-Surface Observing Network on Experimental Ensemble Forecasts of Deep Convection Hazards during VORTEX-SE. Weather and Forecasting. Volume 36, Issue 4. https://doi.org/10.1175/WAF-D-20-0237.1