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Flood Warning — Lake County, IL
Flood Warning
Issued
Expires
10:00 PM CDT · ven., sept. 25 2026
Issuing Office
NWS KLOT

Affected Areas

Lake County, IL

Official Bulletin

440
WGUS43 KLOT 211521
FLWLOT

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Chicago IL
1021 AM CDT Mon Sep 21 2026

...The National Weather Service in Chicago has issued a Flood Warning
for the following rivers in Illinois...

  Des Plaines River near Gurnee affecting Lake IL County.

For the Des Plaines River...including Russell, Gurnee...Minor
flooding is forecast.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

ILC097-220930-
/O.NEW.KLOT.FL.W.0076.260922T1200Z-260926T0600Z/
/GUNI2.1.ER.260922T1200Z.260924T0600Z.260926T0000Z.NO/
1021 AM CDT Mon Sep 21 2026

...FLOOD WARNING IN EFFECT FROM TUESDAY MORNING TO LATE FRIDAY
NIGHT...
...REPLACES RIVER FLOOD WATCH...

* WHAT...Minor flooding is forecast.

* WHERE...Des Plaines River from US-41 in Gurnee downstream to
  Townline Road in Vernon Hills, including the Gurnee gauge.

* WHEN...From Tuesday morning to late Friday night.

* IMPACTS...At 7.0 feet, Forest land inundated near the river in
  Gurnee.

* ADDITIONAL DETAILS...
  - At 9:30 AM CDT Monday the stage was 6.4 feet.
  - Forecast...The river is expected to rise above flood stage
    tomorrow morning to a crest of 8.0 feet early Thursday morning.
    It will then fall below flood stage Friday evening.
  - Flood stage is 7.0 feet.
  - http://www.weather.gov/safety/flood

&&

LAT...LON 4239 8796 4239 8787 4230 8791 4224 8788
      4224 8797 4230 8800

$$

- Izzi