⚠️ Severe Thunderstorm Warning – Corson, SD; Dewey, SD – Monday, August 17, 2026

Severe Thunderstorm Warning issued August 17 at 6:10PM CDT until August 17 at 6:45PM CDT by NWS Aberdeen SD

Details

SVRABR

The National Weather Service in Aberdeen has issued a

* Severe Thunderstorm Warning for…
South Central Corson County in north central South Dakota…
Northwestern Dewey County in north central South Dakota…

* Until 545 PM MDT.

* At 510 PM MDT, a severe thunderstorm was located 9 miles northwest
of Isabel, or 23 miles west of Timber Lake, moving southeast at 45
mph.

HAZARD…60 mph wind gusts and quarter size hail.

SOURCE…Radar indicated.

IMPACT…Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.

* This severe thunderstorm will be near…
Isabel around 520 PM MDT.
Firesteel around 525 PM MDT.
Little Moreau Rec Area and Timber Lake around 540 PM MDT.

Instructions

Seek shelter inside a well-built structure and stay away from
windows. This storm is capable of producing damaging winds and large
hail.

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