Flood Warning

Locations Affected

Holbrook, IL ∙ Glenwood, IL ∙ South Holland, IL ∙ Thornton, IL

Headline

...The Flood Warning continues for the following rivers in Illinois...
Thorn Creek at Thornton affecting Cook County.
For the Thorn Creek...including Thornton...Minor flooding is forecast.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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.
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Full Alert Message

Flood Statement National Weather Service Chicago IL 903 PM CDT Sat Apr 4 2026 ...The Flood Warning continues for the following rivers in Illinois... Thorn Creek at Thornton affecting Cook County. For the Thorn Creek...including Thornton...Minor flooding is forecast. PRECAUTIONARY/PREPAREDNESS ACTIONS... 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. && ...FLOOD WARNING NOW IN EFFECT UNTIL EARLY SUNDAY AFTERNOON... * 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 early Sunday afternoon. * IMPACTS...At 11.0 feet, 187th Street threatened in Glenwood. * ADDITIONAL DETAILS... - At 8:45 PM CDT Saturday the stage was 10.1 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 8:45 PM CDT Saturday was 10.6 feet. - Forecast...The river is expected to fall below flood stage Sunday morning and continue falling. - Flood stage is 9.0 feet. - http://www.weather.gov/safety/flood && LAT...LON 4161 8760 4158 8754 4151 8760 4154 8767

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