Headline:
Flood Warning issued June 11 at 9:47PM CDT until June 13 at 1:00AM CDT by NWS Chicago IL
Event:
Flood Warning
Urgency:
Expected
Effective:
June 11, 2026 - 7:47pm
Expires:
June 12, 2026 - 2:00pm
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 late tonight to early Saturday morning.
* IMPACTS...At 8.0 feet, Athletic fields are inundated at Glenwood
Academy.
At 9.0 feet, Water begins to be diverted through Thorn Creek
Diversion Tunnel.
* ADDITIONAL DETAILS...
- At 9:30 PM CDT Thursday the stage was 8.3 feet.
- Forecast...The river is expected to rise above flood stage
around midnight tonight and crest near 9.5 feet tomorrow
morning.
- 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.
Additional information is available at www.weather.gov.
The next statement will be issued by Friday afternoon.
Area Description:
Cook, IL
Forcast Office:
NWS Chicago IL
Sender:
w-nws.webmaster@noaa.gov