Flood Warning Illinois | Effective 04/04/2026 09:34
Public safety alert, emergency alert, and weather alert<br />
Description:<br />
...The Flood Warning is extended for the following rivers in<br />
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.
* WHEN...Until tomorrow afternoon.