| Event | Severe Thunderstorm Warning |
| Severity | Severe |
| Urgency | Immediate |
| Certainty | Observed |
| Area | Custer, SD; Fall River, SD |
| Effective | 8/21/2026, 4:13:00 PM CDT |
| Expires | 8/21/2026, 5:15:00 PM CDT |
Severe Thunderstorm Warning issued August 21 at 3:13PM MDT until August 21 at 4:15PM MDT by NWS Rapid City SD
Details
SVRUNR
The National Weather Service in Rapid City has issued a
* Severe Thunderstorm Warning for…
South Central Custer County in southwestern South Dakota…
Northeastern Fall River County in southwestern South Dakota…
* Until 415 PM MDT.
* At 313 PM MDT, a severe thunderstorm was located near Cold Brook
Reservoir, or 6 miles north of Hot Springs, moving southeast at 25
mph.
HAZARD…60 mph wind gusts and quarter size hail.
SOURCE…Radar indicated.
IMPACT…Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
* Locations impacted include…
Hot Springs, Oral, Buffalo Gap, Smithwick, Maverick Junction,
Angostura Reservoir, Hay Canyon Butte, Cold Brook Reservoir and
southern Wind Cave National Park.
Instructions
Seek shelter inside a well-built structure and stay away from
windows. This storm is capable of producing damaging winds and large
hail.
This alert was automatically posted by SkyGuard, MWSC’s severe weather alerting system. Source: National Weather Service.
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