⚠️ Severe Thunderstorm Warning – Plymouth, IA; Sioux, IA; Clay, SD; Lincoln, SD; Union, SD – Sunday, June 28, 2026

Severe Thunderstorm Warning issued June 28 at 4:37AM CDT until June 28 at 5:30AM CDT by NWS Sioux Falls SD

Details

SVRFSD

The National Weather Service in Sioux Falls has issued a

* Severe Thunderstorm Warning for…
Western Sioux County in northwestern Iowa…
Northwestern Plymouth County in northwestern Iowa…
Clay County in southeastern South Dakota…
Southern Lincoln County in southeastern South Dakota…
Northern Union County in southeastern South Dakota…

* Until 530 AM CDT.

* At 436 AM CDT, severe thunderstorms were located along a line
extending from 7 miles east of Davis to near Centerville to 7 miles
southeast of Wakonda, moving east at 40 mph.

HAZARD…70 mph wind gusts and nickel size hail.

SOURCE…Mesonet.

IMPACT…Expect considerable tree damage. Damage is likely to
mobile homes, roofs, and outbuildings.

* Severe thunderstorms will be near…
Beresford around 440 AM CDT.
Union Grove State Park around 445 AM CDT.
Alcester and Newton Hills State Park around 450 AM CDT.
Fairview around 455 AM CDT.

Other locations in the path of these severe thunderstorms include
Hudson, Hawarden, Rock Valley and Ireton.

Instructions

Prepare immediately for large hail and damaging winds. People outside
should move immediately to shelter inside a strong building. Stay
away from windows.

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

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