⚠️ Severe Thunderstorm Warning – Custer, SD; Fall River, SD; Weston, WY – Saturday, June 20, 2026

Severe Thunderstorm Warning issued June 20 at 6:48PM MDT until June 20 at 7:30PM MDT by NWS Rapid City SD

Details

SVRUNR

The National Weather Service in Rapid City has issued a

* Severe Thunderstorm Warning for…
Custer County in southwestern South Dakota…
Fall River County in southwestern South Dakota…
Southeastern Weston County in northeastern Wyoming…

* Until 730 PM MDT.

* At 648 PM MDT, severe thunderstorms were located along a line from
9 miles southwest of Jewel Cave National Monument to 6 miles south
of Ardmore, or along a line from 19 miles southwest of Custer to 26
miles south of Edgemont, moving east at 30 mph.

HAZARD…60 mph wind gusts and small hail.

SOURCE…Radar indicated.

IMPACT…Expect damage to roofs, siding, and trees.

* Locations impacted include…
Hot Springs, Custer, Edgemont, Dewey, Oral, Buffalo Gap, Oelrichs,
Pringle, Fairburn, Smithwick, Provo, Argyle, Rumford, Ardmore,
Cottonwood Springs Dam, Cold Brook Reservoir, Cascade Falls,
Maverick Junction, Angostura Reservoir and Wind Cave National Park.

Instructions

Seek shelter inside a well-built structure and stay away from
windows. These storms are capable of producing damaging winds.

This alert was automatically posted by SkyGuard, MWSC’s severe weather alerting system. Source: National Weather Service.