Severe Thunderstorm Warning issued August 24 at 10:43PM CDT until August 24 at 11:15PM CDT by NWS Rapid City SD

Mellette, SD

Urgency: Immediate

Certainty: Observed

Onset: 8/25/2026, 3:43:00 AM

Expires: 8/25/2026, 4:15:00 AM

Details

At 1043 PM CDT, severe thunderstorms were located along a line from near White River to 6 miles west of Swift Bear, or along a line from near White River to 6 miles west of White River, moving southeast at 25 mph. HAZARD...70 mph wind gusts and ping pong ball size hail. SOURCE...Radar indicated. IMPACT...People and animals outdoors will be injured. Expect hail damage to roofs, siding, windows, and vehicles. Expect considerable tree damage. Wind damage is also likely to mobile homes, roofs, and outbuildings. Locations impacted include... White River, Wood, Butte Creek, Horse Creek and Swift Bear.

What To Do

Anyone outdoors should move to shelter inside a well-built structure and stay away from windows. These storms are capable of producing widespread damaging winds and large hail.

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Source: National Weather Service.