Illinois Severe Flood Warning | Effective 09/21/2026 09:03

Headline: 
Flood Warning issued September 21 at 11:03AM CDT until September 21 at 7:00PM CDT by NWS Chicago IL
Event: 
Flood Warning
Urgency: 
Expected
Effective: 
September 21, 2026 - 9:03am
Expires: 
September 21, 2026 - 5:00pm
Description: 
* WHAT...Flooding caused by excessive rainfall on the Green River and nearby tributaries continues. * WHERE...Portions of Lee County in north central Illinois... * WHEN...Until 700 PM CDT Monday. * IMPACTS...Creeks and streams have risen out of their banks. Roads and streets are flooded. Flooding of structures is occurring. High water may be slow to recede from flooded areas. * ADDITIONAL DETAILS... - At 1101 AM CDT, Doppler radar indicated heavy rain due to thunderstorms. Flooding is ongoing or expected to begin shortly in the warned area. - Lee County Emergency Management reports that flooding continues along the Green River in Lee County. - Some locations that will experience flooding include... Amboy. - http://www.weather.gov/safety/flood
Instruction: 
A Flood Warning means flooding is imminent or may already be occurring. Persons along rivers, creeks, and other waterways should take immediate precautions to protect life and property.
Area Description: 
Lee, IL
Forcast Office: 
NWS Chicago IL
Sender: 
w-nws.webmaster@noaa.gov