Hazard Report Provided By forecast.weather.gov

Coastal Hazard Message
National Weather Service Chicago IL
252 PM CDT Mon Jun 22 2026

ILZ006-103-230400-
/O.CON.KLOT.BH.S.0006.000000T0000Z-260623T0900Z/
Lake IL-Northern Cook-
252 PM CDT Mon Jun 22 2026

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH LATE
TONIGHT...

* WHAT...High wave action and dangerous currents expected at Lake
  Michigan beaches. Waves 3 to 6 feet expected.

* WHERE...Lake IL and Northern Cook Counties.

* WHEN...Through late tonight.

* IMPACTS...Swimming conditions will be life threatening,
  especially for inexperienced swimmers.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain out of the water to avoid dangerous swimming conditions
and do not venture out onto piers, jetties, breakwalls, or other
shoreline structures.

&&

$$

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
207 PM CDT Mon Jun 22 2026

ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-231915-
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
207 PM CDT Mon Jun 22 2026 /307 PM EDT Mon Jun 22 2026/

This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.

.DAY ONE...Tonight.

Weather hazards expected...

  High Swim Risk Lake Michigan Beaches.

DISCUSSION...

High waves will create dangerous swimming conditions at Lake
Michigan beaches.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Wednesday through Sunday...
  Limited Thunderstorm Risk.

DISCUSSION...

There will be periodic chances for thunderstorms Wednesday
through Sunday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be necessary through tonight.

$$

Flood Statement
National Weather Service Chicago IL
953 AM CDT Mon Jun 22 2026

...The Flood Warning is extended for the following rivers in
Illinois...

  Thorn Creek at Thornton affecting Cook County.

...The Flood Warning continues for the following rivers in Indiana...
Illinois...

  Little Calumet River at Munster (Hohman Avenue) affecting Lake IN
  and Cook Counties.

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.

&&

ILC031-INC089-230600-
/O.CON.KLOT.FL.W.0046.000000T0000Z-260623T0600Z/
/LCMI3.1.ER.260622T0316Z.260622T0730Z.260623T0000Z.NO/
953 AM CDT Mon Jun 22 2026

...FLOOD WARNING REMAINS IN EFFECT UNTIL JUST AFTER MIDNIGHT
TONIGHT...

* WHAT...Minor flooding is occurring and forecasted to continue.

* 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 just after midnight 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 Monday the stage was 12.8 feet.
  - Recent Activity...The maximum river stage in the 24 hours
    ending at 9:00 AM CDT Monday was 13.2 feet.
  - Forecast...The river is expected to fall below flood stage
    this evening.
  - Flood stage is 12.0 feet.
  - http://www.weather.gov/safety/flood

&&

LAT...LON 4163 8756 4159 8740 4153 8743 4157 8758


$$

Borchardt

Flood Statement
National Weather Service Chicago IL
953 AM CDT Mon Jun 22 2026

...The Flood Warning is extended for the following rivers in
Illinois...

  Thorn Creek at Thornton affecting Cook County.

...The Flood Warning continues for the following rivers in Indiana...
Illinois...

  Little Calumet River at Munster (Hohman Avenue) affecting Lake IN
  and Cook Counties.

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.

&&

ILC031-230900-
/O.EXT.KLOT.FL.W.0047.000000T0000Z-260623T1232Z/
/THNI2.1.ER.260622T0445Z.260622T1800Z.260623T0632Z.NO/
953 AM CDT Mon Jun 22 2026

...FLOOD WARNING NOW IN EFFECT UNTIL TOMORROW MORNING...

* WHAT...Minor flooding is occurring and forecasted to continue.

* WHERE...Thorn Creek from Near Glenwood downstream to confluence
  with Little Calumet River, including the Thornton gauge.

* WHEN...Until tomorrow morning.

* IMPACTS...At 12.0 feet, Structures threatened along Glenwood
  Thornton Road north of Glenwood.

* ADDITIONAL DETAILS...
  - At 9:30 AM CDT Monday the stage was 11.4 feet.
  - Forecast...The river is expected to rise to a crest of 12.0
    feet this afternoon before falling below flood stage tonight.
  - Flood stage is 9.0 feet.
  - http://www.weather.gov/safety/flood

&&

LAT...LON 4161 8760 4158 8754 4151 8760 4154 8767


$$

Hazard Report Provided By forecast.weather.gov