Headline:
Flood Warning issued June 17 at 6:06PM CDT until June 19 at 1:00AM CDT by NWS Chicago IL
Event:
Flood Warning
Urgency:
Expected
Effective:
June 17, 2026 - 4:06pm
Expires:
June 18, 2026 - 10:15am
Description:
...The National Weather Service in Chicago IL has issued a Flood
Warning for the following rivers in Illinois...
Thorn Creek at Thornton affecting Cook County.
For the Thorn Creek...including Thornton...Minor flooding is
forecast.
* WHAT...Minor flooding is forecast.
* WHERE...Thorn Creek from Near Glenwood downstream to confluence
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
Creek Diversion Tunnel.
At 11.0 feet, 187th Street threatened in Glenwood.
* ADDITIONAL DETAILS...
- At 5:45 PM CDT Wednesday the stage was 6.7 feet and rising
rapidly.
- Forecast...The river is expected to crest near 10.5 feet just
after midnight tonight.
- Flood stage is 9.0 feet.
- http://www.weather.gov/safety/flood
Instruction:
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 Thursday afternoon.
Area Description:
Cook, IL
Forcast Office:
NWS Chicago IL
Sender: