South Dakota lightning map
South Dakota sits along the northern Plains storm track, with frequent summer thunderstorms and occasional severe, hail-producing supercells.
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Detected from NOAA GOES-19 GLM satellite data. Aggregate count for South Dakota — your exact location and alerts live in the app.
About lightning in South Dakota
South Dakota sits on the northern plains, where summer storm complexes sweep the prairie and the Black Hills lift air into frequent afternoon storms. These systems can build fast and travel far across open country. The active window runs May through August. With storms that strike from miles out, the live distance to the nearest flash and whether it is approaching give you the lead time the flat horizon hides.
- Thunderstorm days/yr
- 40
- US rank
- #25 of 50
- Peak season
- May–August
State thunderstorm-day normals are provisional (NOAA/NWS); per-city climate data is shown where a station normal is published.
Cities in South Dakota
Lightning safety in South Dakota
The safest call in South Dakotaisn’t how many storm days it averages a year — it’s how close the nearest strike is right now. Keep to the 30-30 rule: indoors within 30 seconds of thunder, back outside only 30 minutes after the last. StrikeCast shows that live distance and whether the storm is closing in, so you can move early.
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 South Dakota — home, work, the kids' school.
Your exact location stays on your device. Never shared. Never tracked.
Lightning guides
Frequently asked
How many thunderstorm days does South Dakota get?
South Dakota averages about 40 thunderstorm days a year, versus a US average near 25 — roughly 1.6× the national norm. Activity peaks May–August.
Where does South Dakota rank for lightning in the US?
By mean annual thunderstorm days, South Dakota ranks #25 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 South Dakota?
Lightning is most frequent May–August in South Dakota.
How does StrikeCast track lightning in South Dakota?
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 South Dakota in the free app to get a push alert when lightning closes in.