⚠️ Severe Thunderstorm Warning – Lyon, IA; Sioux, IA; Lincoln, SD; Union, SD – Wednesday, July 1, 2026

Severe Thunderstorm Warning issued July 1 at 2:42AM CDT until July 1 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…
Southwestern Lyon County in northwestern Iowa…
Northwestern Sioux County in northwestern Iowa…
Southern Lincoln County in southeastern South Dakota…
Northern Union County in southeastern South Dakota…

* Until 315 AM CDT.

* At 242 AM CDT, a severe thunderstorm was located over Hudson, or 10
miles north of Hawarden, moving north at 40 mph.

HAZARD…60 mph wind gusts.

SOURCE…Radar indicated.

IMPACT…Expect damage to roofs, siding, and trees.

* This severe thunderstorm will be near…
Canton, Inwood, Fairview, and Newton Hills State Park around 250
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.

Torrential rainfall is occurring with this storm, 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.