⚠️ Severe Thunderstorm Warning – Lyon, IA; Sioux, IA; Lincoln, SD – Tuesday, August 11, 2026

Severe Thunderstorm Warning issued August 11 at 4:15AM CDT until August 11 at 5:00AM 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…
Central Lincoln County in southeastern South Dakota…

* Until 500 AM CDT.

* At 415 AM CDT, a severe thunderstorm was located near Newton Hills
State Park, or near Canton, moving north at 10 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…
Canton and Worthing around 420 AM CDT.
Inwood around 435 AM CDT.

Instructions

For your protection move to an interior room on the lowest floor of a
building.

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