⚠️ Severe Thunderstorm Warning – Hancock, IL; Henderson, IL; McDonough, IL; Warren, IL; Lee, IA – Wednesday, August 12, 2026

Severe Thunderstorm Warning issued August 12 at 8:20AM CDT until August 12 at 9:15AM CDT by NWS Quad Cities IA IL

Details

SVRDVN

The National Weather Service in the Quad Cities has issued a

* Severe Thunderstorm Warning for…
Northern Hancock County in west central Illinois…
Southern Henderson County in west central Illinois…
Southern Warren County in west central Illinois…
McDonough County in west central Illinois…
Central Lee County in southeastern Iowa…

* Until 915 AM CDT.

* At 820 AM CDT, severe thunderstorms were located along a line
extending from near Montrose to Disco to near Smithshire, moving
east at 40 mph.

HAZARD…60 mph wind gusts.

SOURCE…Trained weather spotters. At 809 AM the Burlington
Airport measured a 58 mph wind gust.

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

* Locations impacted include…
Macomb, Fort Madison, Keokuk, Carthage, Nauvoo, Bushnell, Hamilton,
Colchester, La Harpe, Roseville, Dallas City, Montrose,
Stronghurst, Avon, Blandinsville, Good Hope, Prairie City, Carman,
Biggsville, and Terre Haute.

This also includes Argyle Lake State Park and Nauvoo State Park.

Instructions

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

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.