⚠️ Severe Thunderstorm Warning – Brule, SD; Charles Mix, SD; Gregory, SD – Tuesday, August 18, 2026

Severe Thunderstorm Warning issued August 18 at 2:24AM CDT until August 18 at 3:15AM CDT by NWS Sioux Falls SD

Details

SVRFSD

The National Weather Service in Sioux Falls has issued a

* Severe Thunderstorm Warning for…
Northwestern Charles Mix County in south central South Dakota…
Northwestern Gregory County in south central South Dakota…
Southwestern Brule County in south central South Dakota…

* Until 315 AM CDT.

* At 224 AM CDT, a severe thunderstorm was located 7 miles southwest
of Dude Ranch, or 9 miles southwest of Oacoma, moving southeast at
45 mph.

HAZARD…Quarter size hail.

SOURCE…Radar indicated.

IMPACT…Damage to vehicles is expected.

* This severe thunderstorm will be near…
Lake Francis Case around 230 AM CDT.

Instructions

For your protection move to an interior room on the lowest floor of a
building.

To report severe weather, contact your nearest law enforcement
agency. They will send your report to the National Weather Service
office in Sioux Falls.

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