Headline:
Flood Warning issued April 18 at 1:32AM CDT by NWS Chicago IL
Event:
Flood Warning
Urgency:
Expected
Effective:
April 17, 2026 - 11:32pm
Expires:
April 18, 2026 - 5:45pm
Description:
...Forecast flooding changed from Moderate to Major severity for the
following rivers in Illinois...
Des Plaines River at Lincolnshire affecting Lake IL and Cook
Counties.
For the Des Plaines River...including Lincolnshire...Major flooding
is forecast.
* WHAT...Moderate flooding is occurring and major flooding is
forecast.
* WHERE...Des Plaines River from Townline Road in Libertyville
downstream to Palatine Road in Prospect Heights, including the
Lincolnshire gauge.
* WHEN...Until further notice.
* IMPACTS...At 15.0 feet, Structures threatened along IL-22
(Half-Day Road) just east of the river. Multiple structures
threatened near and west of US-45 (Milwaukee Avenue) and Deerfield
Road. Deerfield Road threatened near the river. Multiple trails
inundated in Half-Day Forest Preserve.
* ADDITIONAL DETAILS...
- At 12:45 AM CDT Saturday the stage was 14.1 feet.
- Recent Activity...Recent rainfall caused the river level to
rise quickly from 13.6 feet this afternoon to now over 14
feet.
- Forecast...The river is expected to rise to a crest near 15.5
feet late Saturday. It will then gradually fall through the
early part of next week.
- Flood stage is 12.5 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 this evening.
Area Description:
Cook, IL; Lake, IL
Forcast Office:
NWS Chicago IL
Sender: