Illinois, Iowa Severe Thunderstorm Warning - Severe | Effective 06/11/2026 07:20

Headline: 
Severe Thunderstorm Warning issued June 11 at 9:20AM CDT until June 11 at 10:30AM CDT by NWS Quad Cities IA IL
Event: 
Severe Thunderstorm Warning
Urgency: 
Immediate
Effective: 
June 11, 2026 - 7:20am
Expires: 
June 11, 2026 - 8:30am
Description: 
SVRDVN The National Weather Service in the Quad Cities has issued a * Severe Thunderstorm Warning for... Northern Henderson County in west central Illinois... Northwestern Warren County in west central Illinois... Mercer County in northwestern Illinois... Henry County in southeastern Iowa... Des Moines County in southeastern Iowa... Louisa County in southeastern Iowa... * Until 1030 AM CDT. * At 920 AM CDT, severe thunderstorms were located along a line extending from near Marr Park to near Swedesburg to Salem, moving east at 45 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * Locations impacted include... Burlington, Monmouth, Mount Pleasant, Aledo, Wapello, Columbus Junction, Oquawka, West Burlington, Burgess, New London, Mediapolis, Winfield, Wayland, Viola, Danville, Morning Sun, Millersburg, Matherville, Kirkwood, and New Boston. This also includes Big River State Forest, Delabar State Park, and Henderson County Conservation Area.
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 300 PM CDT for northwestern and west central Illinois...and southeastern Iowa.
Area Description: 
Henderson, IL; Mercer, IL; Warren, IL; Des Moines, IA; Henry, IA; Louisa, IA
Forcast Office: 
NWS Quad Cities IA IL
Sender: 
w-nws.webmaster@noaa.gov