Illinois Flood Warning | Effective 04/21/2026 18:53

Headline: 
Flood Warning issued April 21 at 8:53PM CDT until April 24 at 7:00AM CDT by NWS Chicago IL
Event: 
Flood Warning
Urgency: 
Immediate
Effective: 
April 21, 2026 - 6:53pm
Expires: 
April 22, 2026 - 1:00pm
Description: 
...The Flood Warning continues for the following rivers in Illinois... Illinois River at La Salle affecting Bureau, Putnam and La Salle Counties. * WHAT...Minor flooding is occurring and forecasted to continue. * WHERE...Illinois River from Starved Rock Lock and Dam downstream to confluence with Big Bureau Creek, including the La Salle gauge. * WHEN...Until Friday morning. * IMPACTS...At 20.0 feet, Agricultural areas in La Salle, Spring Valley, and Peru are inundated. * ADDITIONAL DETAILS... - At 8:45 PM CDT Tuesday the stage was 20.8 feet. - Forecast...The river is expected to fall below flood stage late this week. - Flood stage is 20.0 feet. - http://www.weather.gov/safety/flood
Instruction: 
These forecasts are based almost entirely on observed precipitation as little to no additional precipitation is currently expected over the next 24 to 48 hours. 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. Additional information is available at www.weather.gov. The next statement will be issued by Wednesday afternoon.
Area Description: 
Bureau, IL; La Salle, IL; Putnam, IL
Forcast Office: 
NWS Chicago IL
Sender: 
w-nws.webmaster@noaa.gov