Hazard Report Provided By forecast.weather.gov

Flood Advisory
National Weather Service Chicago IL
751 PM CDT Wed Jun 24 2026

ILC031-INC089-250400-
/O.NEW.KLOT.FA.Y.0048.260625T0051Z-260625T0400Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cook IL-Lake IN IN-
751 PM CDT Wed Jun 24 2026

...FLOOD ADVISORY IN EFFECT UNTIL 11 PM CDT THIS EVENING...

* WHAT...Flooding caused by excessive rainfall is expected.

* WHERE...Southern Cook County in northeast Illinois and northern
  Lake County in northwest Indiana.

* WHEN...Until 1100 PM CDT.

* IMPACTS...Flooding may occur in poor drainage and urban areas.
  Underpasses may be flooded. Roads and streets may be flooded.

* ADDITIONAL DETAILS...
  - At 749 PM CDT, Doppler radar indicated heavy rain due to
    thunderstorms with rain rates of 1 to 2 inches per hour.
    Roadway flooding may begin shortly after the onset of heavy
    rainfall.
  - Some locations that will experience flooding include...
    Chicago, Hammond, Gary, Orland Park, Tinley Park, Calumet
    City, Portage, Merrillville, Chicago Heights, East Chicago,
    Schererville, Hobart, Lansing, Oak Forest, Harvey, Homer
    Glen, Highland, Blue Island, Munster and Dolton.
  - http://www.weather.gov/safety/flood

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flood Advisory means minor flooding along waterways and other poor
drainage areas is imminent or may already be occurring. Persons in
the advisory area should use caution and avoid flood waters.

&&

LAT...LON 4172 8750 4169 8746 4170 8743 4169 8741
      4168 8739 4166 8740 4165 8737 4163 8728
      4164 8722 4147 8723 4147 8779 4156 8779
      4156 8791 4164 8791 4164 8752 4171 8753


$$

WSL

Flood Advisory
National Weather Service Chicago IL
732 PM CDT Wed Jun 24 2026

ILC031-089-250230-
/O.CON.KLOT.FA.Y.0046.000000T0000Z-260625T0230Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cook IL-Kane IL-
732 PM CDT Wed Jun 24 2026

...FLOOD ADVISORY REMAINS IN EFFECT UNTIL 930 PM CDT THIS EVENING...

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

* WHERE...A portion of northeast Illinois, including the following
  counties, Cook and Kane.

* WHEN...Until 930 PM CDT.

* IMPACTS...Flooding may occur in poor drainage and urban areas.
  Roads and streets may be flooded.

* ADDITIONAL DETAILS...
  - At 730 PM CDT, Doppler radar indicated that heavy rainfall
    had moved out of the area. Up to 2 inches of rain fell near
    Algonquin and Carpentersville from earlier storms. Standing
    water may be slow to recede and some streams may continue to
    rise for the next few hours.
  - Some locations that will experience flooding include...
    Chicago, Elgin, Arlington Heights, Schaumburg, Palatine, Des
    Plaines, Mount Prospect, Hoffman Estates, Bartlett,
    Streamwood, Hanover Park, Carpentersville, Elk Grove Village,
    Algonquin, Huntley, Barrington, Rolling Meadows, Roselle,
    South Elgin and Bensenville.
  - http://www.weather.gov/safety/flood

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flood Advisory means minor flooding along waterways and other poor
drainage areas is imminent or may already be occurring. Persons in
the advisory area should use caution and avoid flood waters.

&&

LAT...LON 4215 8823 4215 8810 4208 8793 4199 8792
      4199 8842 4206 8846 4214 8844


$$

WSL

Flood Advisory
National Weather Service Chicago IL
726 PM CDT Wed Jun 24 2026

ILC031-043-197-250330-
/O.NEW.KLOT.FA.Y.0047.260625T0026Z-260625T0330Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cook IL-DuPage IL-Will IL-
726 PM CDT Wed Jun 24 2026

...FLOOD ADVISORY IN EFFECT UNTIL 1030 PM CDT THIS EVENING...

* WHAT...Flooding caused by excessive rainfall is expected.

* WHERE...A portion of northeast Illinois, including the following
  counties, Cook, DuPage and Will.

* WHEN...Until 1030 PM CDT.

* IMPACTS...Flooding may occur in poor drainage and urban areas.
  Roads and streets may be flooded.

* ADDITIONAL DETAILS...
  - At 725 PM CDT, Doppler radar indicated heavy rain due to
    thunderstorms with rain rates of 1 to 2 inches per hour. Up
    to 1 inch of rain has fallen so far near Naperville. Street
    flooding may begin shortly after the onset of rainfall.
  - Some locations that will experience flooding include...
    Chicago, Aurora, Naperville, Cicero, Hammond, Bolingbrook,
    Orland Park, Oak Lawn, Berwyn, Wheaton, Downers Grove,
    Lombard, Romeoville, Plainfield, Calumet City, Woodridge,
    Midway Airport, Chicago Lawn, South Lawndale and Englewood.
  - http://www.weather.gov/safety/flood

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flood Advisory means minor flooding along waterways and other poor
drainage areas is imminent or may already be occurring. Persons in
the advisory area should use caution and avoid flood waters.

&&

LAT...LON 4184 8759 4181 8757 4179 8756 4179 8755
      4177 8755 4177 8754 4176 8752 4164 8752
      4164 8791 4164 8826 4186 8826


$$

WSL

WATCH COUNTY NOTIFICATION FOR WATCH 387
NATIONAL WEATHER SERVICE CHICAGO IL
727 PM CDT WED JUN 24 2026

ILC007-031-037-043-063-089-091-093-097-099-103-105-111-141-197-
201-250300-
/O.CON.KLOT.SV.A.0387.000000T0000Z-260625T0300Z/

SEVERE THUNDERSTORM WATCH 387 REMAINS VALID UNTIL 10 PM CDT THIS
EVENING FOR THE FOLLOWING AREAS

IN ILLINOIS THIS WATCH INCLUDES 16 COUNTIES

IN CENTRAL ILLINOIS

LIVINGSTON

IN NORTH CENTRAL ILLINOIS

BOONE                 DE KALB               LA SALLE
LEE                   OGLE                  WINNEBAGO

IN NORTHEAST ILLINOIS

COOK                  DUPAGE                GRUNDY
KANE                  KANKAKEE              KENDALL
LAKE IL               MCHENRY               WILL

THIS INCLUDES THE CITIES OF ALGONQUIN, AURORA, BELVIDERE,
BOLINGBROOK, BOURBONNAIS, BUFFALO GROVE, BYRON, CAROL STREAM,
CHICAGO, COAL CITY, CRYSTAL LAKE, DEKALB, DIXON, DOWNERS GROVE,
DWIGHT, ELGIN, EVANSTON, FAIRBURY, GURNEE, JOLIET, KANKAKEE,
LA SALLE, LEMONT, LOMBARD, MARSEILLES, MCHENRY, MENDOTA, MINOOKA,
MORRIS, MUNDELEIN, NAPERVILLE, OAK LAWN, OREGON, ORLAND PARK,
OSWEGO, OTTAWA, PARK FOREST, PLANO, PONTIAC, ROCHELLE, ROCKFORD,
SCHAUMBURG, STREATOR, SYCAMORE, WAUKEGAN, WHEATON, WILMINGTON,
WOODSTOCK, AND YORKVILLE.

$$

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
217 PM CDT Wed Jun 24 2026

ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-251930-
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-
217 PM CDT Wed Jun 24 2026 /317 PM EDT Wed Jun 24 2026/

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

.DAY ONE...Tonight.

Weather hazards expected...

  Elevated Thunderstorm Risk...with an associated:
     Level 2 of 5 Damaging Wind Risk...up to 60 mph.
     Level 2 of 5 Large Hail Risk...up to ping pong ball size.

DISCUSSION...

Scattered thunderstorms are expected this afternoon and evening.
A couple of the storms could become severe with large hail and
damaging winds the primary threat.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

Friday...
  Limited Thunderstorm Risk south of I-80.
Saturday night and Sunday morning...
  Limited Thunderstorm Risk.
Monday...
  Elevated Excessive Heat Risk.
Tuesday...
  Limited Thunderstorm Risk.
  Elevated Excessive Heat Risk.

.SPOTTER INFORMATION STATEMENT...

  Spotters may be needed through this evening.

GENERAL STORM MOTION OF THE DAY:

  Moving toward the southeast 30 mph, isolated storms may move
  northeast up to 40 mph.

$$

Hazard Report Provided By forecast.weather.gov