Headline:
Flood Warning issued September 20 at 9:45AM CDT until September 21 at 1:00AM CDT by NWS Chicago IL
Event:
Flood Warning
Urgency:
Immediate
Effective:
September 20, 2026 - 7:45am
Expires:
September 20, 2026 - 11:00pm
Description:
...The Flood Warning continues for the following rivers in
Illinois...Indiana...
Little Calumet River at Munster (Hohman Avenue) affecting Lake IN
and Cook Counties.
For the Little Calumet River...including South Holland, Munster
(Hohman Avenue)...Minor flooding is forecast.
* WHAT...Minor flooding is forecast.
* WHERE...Little Calumet River from IN-912 in Hammond downstream to
confluence with Thorn Creek in South Holland, including the Munster
(Hohman Avenue) gauge.
* WHEN...Until late tonight.
* IMPACTS...At 12.5 feet, Most areas outside of the levee-protected
area are inundated in Hammond and Munster.
* ADDITIONAL DETAILS...
- At 9:00 AM CDT Sunday the stage was 9.3 feet.
- Forecast...The river is expected to briefly rise and crest to
around flood stage of 12.0 feet late this afternoon into early
evening. It will then fall below flood stage late this evening.
- Flood stage is 12.0 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 late tonight.
Area Description:
Cook, IL; Lake, IN
Forcast Office:
NWS Chicago IL
Sender:
w-nws.webmaster@noaa.gov