Headline:
Flood Warning issued August 1 at 2:44PM CDT until August 2 at 9:00AM CDT by NWS Chicago IL
Event:
Flood Warning
Urgency:
Expected
Effective:
August 1, 2026 - 12:44pm
Expires:
August 2, 2026 - 7:00am
Description:
...The National Weather Service in Chicago 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...Until Sunday morning.
* IMPACTS...At 9.0 feet, Water begins to be diverted through Thorn
Creek Diversion Tunnel.
* ADDITIONAL DETAILS...
- At 2:15 PM CDT Saturday the stage was 8.6 feet.
- Forecast...The river is expected to rise above flood stage late
this afternoon to a crest of 10.0 feet this evening. It will then
fall below flood stage late 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 Sunday morning at 900 AM CDT.
Area Description:
Cook, IL
Forcast Office:
NWS Chicago IL
Sender:
w-nws.webmaster@noaa.gov