Illinois Severe Severe Thunderstorm Warning | Effective 08/11/2026 07:29

Headline: 
Severe Thunderstorm Warning issued August 11 at 9:29AM CDT until August 11 at 10:15AM CDT by NWS Chicago IL
Event: 
Severe Thunderstorm Warning
Urgency: 
Immediate
Effective: 
August 11, 2026 - 7:29am
Expires: 
August 11, 2026 - 8:15am
Description: 
At 928 AM CDT, severe thunderstorms were located along a line extending from near Durand to Davis Junction to near Sublette, moving east at 55 mph. This line of storms has a history of producing wind damage. HAZARD...70 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect considerable tree damage. Damage is likely to mobile homes, roofs, and outbuildings. Locations impacted include... Rockford, Beloit, Loves Park, Machesney Park, Dixon, Roscoe, Rochelle, South Beloit, Rockton, Byron, Oregon, Mount Morris, Amboy, Polo, Rockford Airport, Cherry Valley, Winnebago, Davis Junction, Pecatonica, Forreston, Durand, Hillcrest, Stillman Valley, Franklin Grove, and Ashton.
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. Prepare immediately for damaging winds and deadly cloud to ground lightning. Seek shelter inside a well-built structure. Stay away from windows.
Area Description: 
Lee, IL; Ogle, IL; Winnebago, IL
Forcast Office: 
NWS Chicago IL
Sender: 
w-nws.webmaster@noaa.gov