Illinois, Indiana Severe Flood Warning | Effective 07/04/2026 17:50

Headline: 
Flood Warning issued July 4 at 7:50PM CDT until July 5 at 3:35PM CDT by NWS Chicago IL
Event: 
Flood Warning
Urgency: 
Expected
Effective: 
July 4, 2026 - 5:50pm
Expires: 
July 5, 2026 - 12:00pm
Description: 
...The National Weather Service in Chicago IL has issued a Flood Warning for the following rivers in Illinois...Indiana... Little Calumet River at Munster (Hohman Avenue) affecting Lake IN and Cook Counties. For the Little Calumet River...including Munster (Hohman Avenue)... Minor flooding is forecast. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Little Calumet River from IN-912 in Hammond downstream to confluence with Thorn Creek in South Holland, including the Munster (Hohman Avenue) gauge. * WHEN...From this evening to Sunday afternoon. * IMPACTS...At 12.5 feet, Most areas outside of the levee-protected area are inundated in Hammond and Munster. * ADDITIONAL DETAILS... - At 7:00 PM CDT Saturday the stage was 12.2 feet. - Recent Activity...The river has rapidly rose above flood stage. - Forecast...The river is expected to rise to a crest of 12.9 feet just after midnight tonight. It is then expected to fall below flood stage late Sunday morning. - Flood stage is 12.0 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 Sunday afternoon.
Area Description: 
Cook, IL; Lake, IN
Forcast Office: 
NWS Chicago IL