Illinois Severe Flood Warning | Effective 06/17/2026 16:06
...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 forecast.
* WHERE...Thorn Creek from Near Glenwood downstream to confluence<br />
with Little Calumet River, including the Thornton gauge.
* WHEN...From this evening to early Friday morning.
* IMPACTS...At 9.0 feet, Water begins to be diverted through Thorn<br />
Creek Diversion Tunnel.<br />