Illinois Severe Flood Warning | Effective 06/18/2026 08:24
...The Flood Warning is extended for the following rivers in
Illinois...
Thorn Creek at Thornton affecting Cook County.
* 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 just after midnight tonight.
* IMPACTS...At 11.0 feet, 187th Street threatened in Glenwood.
* ADDITIONAL DETAILS...
- At 10:00 AM CDT Thursday the stage was 11.0 feet.