Illinois Severe Flood Warning | Effective 07/05/2026 13:34

Headline: 
Flood Warning issued July 5 at 3:34PM CDT until July 6 at 8:20PM CDT by NWS Chicago IL
Event: 
Flood Warning
Urgency: 
Immediate
Effective: 
July 5, 2026 - 1:34pm
Expires: 
July 6, 2026 - 7:45am
Description: 
...Forecast flooding changed to Minor severity and increased in duration for the following rivers in Indiana...Illinois... Little Calumet River at Munster (Hohman Avenue) affecting Cook and Lake IN Counties. ...The Flood Warning is extended for the following rivers in Illinois... Thorn Creek at Thornton affecting Cook County. For the Little Calumet River...including Munster (Hohman Avenue)... Minor flooding is forecast. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Thorn Creek from Near Glenwood downstream to confluence with Little Calumet River, including the Thornton gauge. * WHEN...Until tomorrow evening. * IMPACTS...At 13.0 feet, Parking lots threatened at Glenwood Academy. * ADDITIONAL DETAILS... - At 3:15 PM CDT Sunday the stage was 12.5 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 3:15 PM CDT Sunday was 12.5 feet. - Forecast...The river is expected to fall below flood stage tomorrow afternoon. - Flood stage is 9.0 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 Monday morning.
Area Description: 
Cook, IL
Forcast Office: 
NWS Chicago IL