⚠️ Severe Thunderstorm Warning – Lyon, IA; Plymouth, IA; Sioux, IA; Clay, SD; Lincoln, SD; Union, SD – Tuesday, September 1, 2026

Severe Thunderstorm Warning issued September 1 at 9:24PM CDT until September 1 at 10:15PM CDT by NWS Sioux Falls SD

Details

SVRFSD

The National Weather Service in Sioux Falls has issued a

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

* Until 1015 PM CDT.

* At 923 PM CDT, severe thunderstorms were located along a line
extending from Beresford to 7 miles south of Union Grove State
Park, moving east at 50 mph.

HAZARD…70 mph wind gusts and half dollar size hail.

SOURCE…Public. At 909 PM CDT, a 59 mph wind gust was reported 1
mile southeast of Vermillion.

IMPACT…Hail damage to vehicles is expected. Expect considerable
tree damage. Wind damage is also likely to mobile homes,
roofs, and outbuildings.

* Severe thunderstorms will be near…
Akron and Alcester around 935 PM CDT.
Hawarden around 940 PM CDT.
Hudson around 945 PM CDT.

Other locations in the path of these severe thunderstorms include
Ireton, Craig, Rock Valley, Maurice, Struble, Sioux Center, Orange
City and Hull.

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.