Flood Warning Illinois | Effective 04/04/2026 04:37
Public safety alert, emergency alert, and weather alert<br />
Description:<br />
...The National Weather Service in Chicago IL has issued a Flood<br />
Warning for the following rivers in Illinois...
Thorn Creek at Thornton affecting Cook County.
For the Thorn Creek...including Thornton...Minor flooding is<br />
forecast.
* WHAT...Minor flooding is occurring and minor flooding is forecast.
* WHERE...Thorn Creek from Near Glenwood downstream to confluence<br />
with Little Calumet River, including the Thornton gauge.