Illinois Severe Flood Warning | Effective 09/21/2026 08:21

Headline: 
Flood Warning issued September 21 at 10:21AM CDT until September 26 at 1:00AM CDT by NWS Chicago IL
Event: 
Flood Warning
Urgency: 
Expected
Effective: 
September 21, 2026 - 8:21am
Expires: 
September 22, 2026 - 2:30am
Description: 
...The National Weather Service in Chicago has issued a Flood Warning for the following rivers in Illinois... Des Plaines River near Gurnee affecting Lake IL County. For the Des Plaines River...including Russell, Gurnee...Minor flooding is forecast. * WHAT...Minor flooding is forecast. * WHERE...Des Plaines River from US-41 in Gurnee downstream to Townline Road in Vernon Hills, including the Gurnee gauge. * WHEN...From Tuesday morning to late Friday night. * IMPACTS...At 7.0 feet, Forest land inundated near the river in Gurnee. * ADDITIONAL DETAILS... - At 9:30 AM CDT Monday the stage was 6.4 feet. - Forecast...The river is expected to rise above flood stage tomorrow morning to a crest of 8.0 feet early Thursday morning. It will then fall below flood stage Friday evening. - Flood stage is 7.0 feet. - http://www.weather.gov/safety/flood
Instruction: 
A Flood Warning means water levels above flood stage are imminent or may already be occurring. Persons along rivers and streams in the warned area should take immediate precautions to protect life and property. These forecasts are based on observed precipitation as well as forecast precipitation 24 hours into the future. Changes to the rainfall forecast, or any additional rainfall after 24 hours, may cause changes to these river forecasts. Additional information is available at www.weather.gov. The next statement will be issued by late tonight.
Area Description: 
Lake, IL
Forcast Office: 
NWS Chicago IL
Sender: 
w-nws.webmaster@noaa.gov