⚠️ Severe Thunderstorm Warning – Bureau, IL; Henry, IL; Rock Island, IL; Whiteside, IL; Scott, IA – Friday, August 21, 2026

Severe Thunderstorm Warning issued August 21 at 8:13PM CDT until August 21 at 9:00PM CDT by NWS Quad Cities IA IL

Details

SVRDVN

The National Weather Service in the Quad Cities has issued a

* Severe Thunderstorm Warning for…
East central Rock Island County in northwestern Illinois…
Southwestern Whiteside County in northwestern Illinois…
Northern Henry County in northwestern Illinois…
Northwestern Bureau County in north central Illinois…
East central Scott County in east central Iowa…

* Until 900 PM CDT.

* At 812 PM CDT, severe thunderstorms were located along a line
extending from near Erie to Le Claire, moving southeast at 25 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.

* Locations impacted include…
Bettendorf, East Moline, Silvis, Geneseo, Colona, Le Claire,
Prophetstown, Hampton, Port Byron, Erie, Rapids City, Princeton,
Cordova, Hooppole, Cleveland, Osborn, Dayton, Carbon Cliff,
Hillsdale, and Yorktown.

This includes the following highways…
Interstate 80 in Iowa between mile markers 301 and 306.
Interstate 80 in Illinois between mile markers 1 and 9, and between
mile markers 11 and 20.
Interstate 88 between mile markers 1 and 23.

This also includes Big Bend Fish and Wildlife Area.

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.