Severe Thunderstorm Warning — Custer County, South Dakota
A thunderstorm capable of producing damaging winds of 58+ mph and/or 1-inch hail has been detected.
Current Status
⛈️ Active: Severe Thunderstorm Warning
Severe Thunderstorm Warning issued August 10 at 5:20PM MDT until August 10 at 5:45PM MDT by NWS Rapid City SD
At 520 PM MDT, a severe thunderstorm was located over Rockerville, or 9 miles southwest of Rapid City, moving east at 30 mph. HAZARD...Quarter size hail. SOURCE...Radar indicated. IMPACT...Damage to vehicles is expected. This severe thunderstorm will be near... Rockerville, Sheridan Lake, Hisega, Keystone Wye, Keystone and Mount Rushmore National Memorial around 520 PM MDT. Bear Country and Rapid City around 525 PM MDT.
Effective August 10, 2026 at 7:20 PM ET · Expires August 10, 2026 at 7:45 PM ET
Event Details
Event Type
Severe Thunderstorm Warning
Severity
severe
Issued By
NWS Rapid City SD
Expires
August 10, 2026 at 7:45 PM ET
Last Checked
2 hours ago
What To Do
📋 Official NWS Guidance
This storm is producing large quantities of hail. Driving through deep hail is like driving on slushy roads. Slow down and do not brake suddenly.
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Get Severe Thunderstorm Warning Alerts for Custer County
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Frequently Asked Questions
What does a Severe Thunderstorm Warning mean for Custer County, South Dakota?
A thunderstorm capable of producing damaging winds of 58+ mph and/or 1-inch hail has been detected.
Is this Severe Thunderstorm Warning currently active?
Yes — this alert is active as of our last check (2 hours ago). It's set to expire August 10, 2026 at 7:45 PM ET.
How do I get notified about Severe Thunderstorm Warning alerts for Custer County?
Download StormCast free on Google Play and set Custer County, South Dakota as one of your monitored locations. StormCast checks the NWS feed continuously and pushes alerts like this directly to your phone — even with the screen off.