| Event | Severe Thunderstorm Warning |
| Severity | Severe |
| Urgency | Immediate |
| Certainty | Observed |
| Area | Haakon, SD; Pennington, SD |
| Effective | 7/27/2026, 4:14:00 PM CDT |
| Expires | 7/27/2026, 5:00:00 PM CDT |
Severe Thunderstorm Warning issued July 27 at 3:14PM MDT until July 27 at 4:00PM MDT by NWS Rapid City SD
Details
SVRUNR
The National Weather Service in Rapid City has issued a
* Severe Thunderstorm Warning for…
Southwestern Haakon County in west central South Dakota…
East Central Pennington County in west central South Dakota…
* Until 400 PM MDT.
* At 314 PM MDT, a severe thunderstorm was located 6 miles west of
Grindstone, or 23 miles west of Philip, moving east at 25 mph.
HAZARD…70 mph wind gusts and small hail.
SOURCE…Radar indicated.
IMPACT…Expect considerable tree damage. Damage is likely to
mobile homes, roofs, and outbuildings.
* Locations impacted include…
Grindstone and Grindstone Butte.
Instructions
Anyone outdoors should move to shelter inside a well-built structure
and stay away from windows. This storm is capable of producing
widespread damaging winds.
This alert was automatically posted by SkyGuard, MWSC’s severe weather alerting system. Source: National Weather Service.
More Stories
⚠️ Special Weather Statement – Cheyenne; Rawlins; Dundy; Hitchcock; Red Willow – Monday, July 27, 2026
⚠️ Special Weather Statement – Chase; Hayes – Monday, July 27, 2026
⚠️ Severe Thunderstorm Warning – Jones, SD; Stanley, SD – Monday, July 27, 2026