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

Severe Thunderstorm Warning issued June 20 at 6:12PM MDT until June 20 at 7:15PM MDT by NWS Rapid City SD

Details

SVRUNR

The National Weather Service in Rapid City has issued a

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

* Until 715 PM MDT.

* At 612 PM MDT, severe thunderstorms were located along a line from
12 miles south of Osage to 26 miles south of Morrisey, or along a
line from 14 miles west of Newcastle to 25 miles west of Edgemont,
moving east at 25 mph.

HAZARD…60 mph wind gusts and small hail.

SOURCE…Radar indicated.

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

* Locations impacted include…
Newcastle, Edgemont, Dewey, Osage, Provo, Morrisey, Clareton,
Rumford, Ardmore, Elk Mountain Lookout, Burdock and Jewel Cave
National Monument.

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.