Illinois Flash Flood Warning - Severe | Effective 06/11/2026 16:24

Headline: 
Flash Flood Warning issued June 11 at 6:24PM CDT until June 11 at 9:30PM CDT by NWS Chicago IL
Event: 
Flash Flood Warning
Urgency: 
Immediate
Effective: 
June 11, 2026 - 4:24pm
Expires: 
June 11, 2026 - 7:30pm
Description: 
At 624 PM CDT, Doppler radar indicated thunderstorms producing heavy rain have begun to move east of the warned area. Up to 2 inches of rain have fallen. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding. SOURCE...Radar. IMPACT...Rapid-onset flooding of creeks, streams, drainage ditches, streets, underpasses, low-lying areas, and other poor drainage areas. Some locations that will experience flash flooding include... Rockford, Loves Park, Machesney Park, Roscoe, South Beloit, Rockton, Rockford Airport, Cherry Valley, Winnebago, Davis Junction, Pecatonica, Lake Summerset, Durand, New Milford, Seward, Harrison and Shirland. This includes the following streams and drainages... Keith and Kent Creek.
Instruction: 
A Flash Flood Warning means rapid-onset flooding is imminent or may already be occurring. Persons along creeks, drainage ditches, and other waterways should take immediate precautions to protect life and property.
Area Description: 
Winnebago, IL
Forcast Office: 
NWS Chicago IL
Sender: 
w-nws.webmaster@noaa.gov