Iowa lightning map
Iowa is squarely in the upper-Midwest severe-weather belt, with frequent summer thunderstorm complexes and occasional damaging derechos.
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Detected from NOAA GOES-19 GLM satellite data. Aggregate count for Iowa — your exact location and alerts live in the app.
About lightning in Iowa
Iowa sits in the northern severe-weather corridor, where spring supercells and large overnight storm complexes (MCSs) deliver intense lightning across the open plains. The flat terrain lets these systems move and intensify rapidly. The active window runs April through September. With storms that can build after dark and travel fast, the live distance and trend to the nearest strike are the numbers that give you warning.
- Thunderstorm days/yr
- 45
- US rank
- #16 of 50
- Peak season
- April–September
State thunderstorm-day normals are provisional (NOAA/NWS); per-city climate data is shown where a station normal is published.
Cities in Iowa
Lightning safety in Iowa
When storms build across Iowa, the distance to the nearest strike matters more than a statewide count. Follow the 30-30 rule: if thunder follows lightning by 30 seconds or less, get indoors, and wait 30 minutes after the last thunder before heading back out. If you can hear thunder, you are already close enough to be struck. StrikeCast surfaces the live distance and trend so you can act before the storm reaches you.
StrikeCast app
Distance, trend & alerts — in your pocket.
GPS-precise distance to the nearest strike, live approaching/moving-away trend, and push alerts for every place that matters across Iowa — home, work, the kids' school.
Your exact location stays on your device. Never shared. Never tracked.
Frequently asked
How many thunderstorm days does Iowa get?
Iowa averages about 45 thunderstorm days a year, versus a US average near 25 — roughly 1.8× the national norm. Activity peaks April–September.
Where does Iowa rank for lightning in the US?
By mean annual thunderstorm days, Iowa ranks #16 of 50 states. Rankings use NOAA/NWS climate normals; the live distance and trend on this page come from NOAA GOES-19 satellite data.
When is thunderstorm season in Iowa?
Lightning is most frequent April–September in Iowa.
How does StrikeCast track lightning in Iowa?
StrikeCast reads NOAA GOES-19 GLM (Geostationary Lightning Mapper) satellite data, updated continuously, to show how far away the nearest strike is and whether it is approaching or moving away. Save any place in Iowa in the free app to get a push alert when lightning closes in.