Illinois, Iowa Severe Thunderstorm Warning | Effective 04/17/2026 16:37

Headline: 
Severe Thunderstorm Warning issued April 17 at 6:37PM CDT until April 17 at 7:45PM CDT by NWS Quad Cities IA IL
Event: 
Severe Thunderstorm Warning
Urgency: 
Immediate
Effective: 
April 17, 2026 - 4:37pm
Expires: 
April 17, 2026 - 5:45pm
Description: 
SVRDVN The National Weather Service in the Quad Cities has issued a * Severe Thunderstorm Warning for... Northeastern Rock Island County in northwestern Illinois... Whiteside County in northwestern Illinois... Northern Henry County in northwestern Illinois... Southeastern Carroll County in northwestern Illinois... Northwestern Bureau County in north central Illinois... Eastern Clinton County in east central Iowa... * Until 745 PM CDT. * At 637 PM CDT, severe thunderstorms were located along a line extending from Thomson Causeway to Lynn Center, moving east at 45 mph. HAZARD...70 mph wind gusts and penny size hail. SOURCE...Radar indicated. IMPACT...Expect considerable tree damage. Damage is likely to mobile homes, roofs, and outbuildings. * Locations impacted include... Clinton, Sterling, Rock Falls, Morrison, Geneseo, Colona, Camanche, Le Claire, Fulton, Prophetstown, Port Byron, Erie, Garden Plain, Milledgeville, Rapids City, Fairhaven, Albany, Tampico, Cordova, and Lyndon. This includes the following highways... Interstate 80 in Illinois between mile markers 2 and 9. Interstate 88 between mile markers 1 and 44.
Instruction: 
Remain alert for a possible tornado! Tornadoes can develop quickly from severe thunderstorms. If you spot a tornado go at once into the basement or small central room in a sturdy structure. For your protection move to an interior room on the lowest floor of a sturdy building. A Tornado Watch remains in effect until 800 PM CDT for north central and northwestern Illinois...and east central Iowa.
Area Description: 
Bureau, IL; Carroll, IL; Henry, IL; Rock Island, IL; Whiteside, IL; Clinton, IA
Forcast Office: 
NWS Quad Cities IA IL
Sender: 
w-nws.webmaster@noaa.gov