⚠️ Severe Thunderstorm Warning – Plymouth, IA; Sioux, IA; Union, SD – Thursday, October 8, 2026

Severe Thunderstorm Warning issued October 8 at 10:37PM CDT until October 8 at 11:15PM CDT by NWS Sioux Falls SD

Details

SVRFSD

The National Weather Service in Sioux Falls has issued a

* Severe Thunderstorm Warning for…
Northwestern Plymouth County in northwestern Iowa…
Southwestern Sioux County in northwestern Iowa…
Northern Union County in southeastern South Dakota…

* Until 1115 PM CDT.

* At 1037 PM CDT, a severe thunderstorm was located 5 miles east of
Union Grove State Park, or 12 miles southwest of Hawarden, moving
east at 25 mph.

HAZARD…Ping pong ball size hail.

SOURCE…Radar indicated.

IMPACT…People and animals outdoors will be injured. Expect damage
to roofs, siding, windows, and vehicles.

* This severe thunderstorm will be near…
Union Grove State Park around 1040 PM CDT.
Akron around 1055 PM CDT.

Other locations impacted by the severe thunderstorm include
Chatsworth.

Instructions

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

Report severe weather to your nearest law enforcement agency or the
National Weather Service office in Sioux Falls SD.

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