Hazard Report Provided By forecast.weather.gov

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
332 AM CDT Sun Jun 14 2026

ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-150845-
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-
332 AM CDT Sun Jun 14 2026 /432 AM EDT Sun Jun 14 2026/

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

.DAY ONE...Today and Tonight.

Weather hazards expected...

  Limited Thunderstorm Risk This Morning.
  High Swim Risk Indiana Lake Michigan Beaches.

DISCUSSION...

Isolated thunderstorms are possible this morning southeast of a
Pontiac to Valparaiso line. No severe weather is expected.

High waves will create dangerous swimming conditions at Indiana
Lake Michigan beaches through this evening.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Tuesday...
  Limited Thunderstorm Risk...with an associated:
     Level 1 of 5 Severe Thunderstorm Risk.
Wednesday...
  Elevated Flooding Risk.
  Elevated Thunderstorm Risk...with an associated:
     Level 2 of 5 Severe Thunderstorm Risk.
Thursday...
  Limited Thunderstorm Risk.
  High Swim Risk Indiana Lake Michigan Beaches.

DISCUSSION...

Scattered thunderstorms are possible Tuesday afternoon, a few
of these thunderstorms may become severe.

Severe thunderstorms are likely across the entire area on
Wednesday with all severe hazards possible. Torrential rain
and localized flash flooding will also be possible Wednesday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be necessary through tonight.

GENERAL STORM MOTION OF THE DAY:

Moving toward the east at 40 mph.

$$

Flood Warning
National Weather Service Chicago IL
918 AM CDT Sun Jun 14 2026

...The National Weather Service in Chicago IL has issued a Flood
Warning 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 Munster (Hohman Avenue)...
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.

&&

ILC031-INC089-150830-
/O.NEW.KLOT.FL.W.0043.260614T1511Z-260615T1200Z/
/LCMI3.1.ER.260614T1511Z.260615T0000Z.260615T0600Z.NO/
918 AM CDT Sun Jun 14 2026

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

* 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 tomorrow morning.

* 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 11.8 feet.
  - Forecast...The river is expected to rise above flood stage
    late this morning to a crest near 12.5 feet this evening. It
    is then forecast to fall tonight into tomorrow.
  - Flood stage is 12.0 feet.
  - http://www.weather.gov/safety/flood

&&

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


$$

Birk

Flood Warning
National Weather Service Chicago IL
913 AM CDT Sun Jun 14 2026

...The National Weather Service in Chicago IL 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.

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.

&&

ILC031-150815-
/O.NEW.KLOT.FL.W.0042.260614T1517Z-260615T1500Z/
/THNI2.1.ER.260614T1517Z.260615T0000Z.260615T0900Z.NO/
913 AM CDT Sun Jun 14 2026

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

* WHAT...Minor flooding is forecast.

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

* WHEN...Until late tomorrow morning.

* IMPACTS...At 11.0 feet, 187th Street threatened in Glenwood.

* ADDITIONAL DETAILS...
  - At 9:00 AM CDT Sunday the stage was 8.8 feet.
  - Forecast...The river is expected to rise above flood stage
    late this morning to a crest of 10.3 feet this evening. It
    will then fall below flood stage late tonight.
  - Flood stage is 9.0 feet.
  - http://www.weather.gov/safety/flood

&&

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


$$

Birk

Flood Warning
National Weather Service Chicago IL
857 AM CDT Sun Jun 14 2026

ILC031-197-INC089-142000-
/O.EXT.KLOT.FA.W.0004.000000T0000Z-260614T2000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cook IL-Will IL-Lake IN IN-
857 AM CDT Sun Jun 14 2026

...FLOOD WARNING NOW IN EFFECT UNTIL 3 PM CDT THIS AFTERNOON...

* WHAT...Flooding caused by excessive rainfall continues.

* WHERE...Portions of northeast Illinois, including the following
  counties, Cook and Will and northwest Indiana, including the
  following county, Lake IN.

* WHEN...Until 300 PM CDT Sunday.

* IMPACTS...Creeks and streams may rise out of their banks.
  Underpasses may be flooded. Roads and streets may be flooded.

* ADDITIONAL DETAILS...
  - At 850 AM CDT, Doppler radar indicated that the heavy rain
    has ended, however 2 to locally in excess of 3 inches of rain
    has fallen in the warning area. Water level gauges along Deer
    Creek, Lansing Ditch and Hart Ditch indicate high water
    levels, with flooding likely in and around these streams, as
    well as low lying and poor drainage areas. Expect water
    levels to gradually recede this afternoon.
  - Some locations that will experience flooding include...
    Merrillville, Chicago Heights, Schererville, Crown Point,
    Munster, Park Forest, Matteson, Steger, Dyer, St. John,
    Richton Park, Sauk Village, Flossmoor, Lynwood, Glenwood,
    Crete, University Park, Olympia Fields, Ford Heights and
    South Chicago Heights.
  - http://www.weather.gov/safety/flood

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flood Warning means flooding is imminent or may already be
occurring. Persons along rivers, creeks, and other waterways should
take immediate precautions to protect life and property.

&&

LAT...LON 4153 8767 4153 8753 4149 8742 4145 8733
      4143 8731 4139 8733 4140 8755 4141 8755
      4144 8760 4145 8771 4150 8771


$$

Birk

Hazard Report Provided By forecast.weather.gov