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Severe Thunderstorm Warning 0226
Issued by the Chicago Forecast Office

Action Issued Starts Expiration
New 2026-08-09 15:14:53 2026-08-09 15:14:00 2026-08-09 16:30:00
Continued 2026-08-09 15:17:23 2026-08-09 16:30:00
Continued 2026-08-09 15:41:24 2026-08-09 16:30:00
Continued 2026-08-09 16:00:25 2026-08-09 16:30:00
Cancelled 2026-08-09 16:00:25 2026-08-09 16:30:00
Continued 2026-08-09 16:14:55 2026-08-09 16:30:00
Expired 2026-08-09 16:22:56 2026-08-09 16:30:00


Action: New
Issued At: 2026-08-09 15:14:53

613 
WUUS53 KLOT 092014
SVRLOT
ILC031-197-INC089-127-092130-
/O.NEW.KLOT.SV.W.0226.260809T2014Z-260809T2130Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Chicago/Romeoville
314 PM CDT Sun Aug 9 2026

The National Weather Service in Chicago has issued a

* Severe Thunderstorm Warning for...
  Central Will County in northeastern Illinois...
  Southeastern Cook County in northeastern Illinois...
  Porter County in northwestern Indiana...
  Central Lake County in northwestern Indiana...

* Until 430 PM CDT.

* At 314 PM CDT, a severe thunderstorm was located over Dixmoor, or
  over Harvey, moving east at 60 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  Hammond, Gary, Orland Park, Tinley Park, Oak Lawn, Calumet City,
  Portage, Merrillville, Valparaiso, Chicago Heights, Roseland, East
  Chicago, Schererville, Hobart, Burbank, Lansing, Oak Forest, Crown
  Point, Harvey, New Lenox, Homer Glen, Highland, Blue Island,
  Munster, and Dolton.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4146 8803 4174 8782 4173 8752 4171 8753
      4167 8748 4167 8744 4168 8743 4167 8742
      4165 8744 4164 8743 4162 8729 4163 8716
      4165 8715 4165 8712 4170 8697 4170 8693
      4132 8693
TIME...MOT...LOC 2014Z 275DEG 50KT 4163 8766 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Carlaw


Action: Continued
Issued At: 2026-08-09 15:17:23

652 
WWUS53 KLOT 092016
SVSLOT

Severe Weather Statement
National Weather Service Chicago/Romeoville
316 PM CDT Sun Aug 9 2026

ILC031-197-INC089-127-092130-
/O.CON.KLOT.SV.W.0226.000000T0000Z-260809T2130Z/
Will IL-Cook IL-Porter IN-Lake IN-
316 PM CDT Sun Aug 9 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM CDT
FOR CENTRAL WILL...SOUTHEASTERN COOK...PORTER AND CENTRAL LAKE
COUNTIES...

At 316 PM CDT, a severe thunderstorm was located over Phoenix, or
over Dolton, moving east at 60 mph.

HAZARD...70 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect considerable tree damage. Damage is likely to mobile 
         homes, roofs, and outbuildings.

Locations impacted include...
Hammond, Gary, Orland Park, Tinley Park, Oak Lawn, Calumet City,
Portage, Merrillville, Valparaiso, Chicago Heights, Roseland, East
Chicago, Schererville, Hobart, Burbank, Lansing, Oak Forest, Crown
Point, Harvey, New Lenox, Homer Glen, Highland, Blue Island, Munster,
and Dolton.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4146 8803 4174 8782 4173 8752 4171 8753
      4167 8748 4167 8744 4168 8743 4167 8742
      4165 8744 4164 8743 4162 8729 4163 8716
      4165 8715 4165 8712 4170 8697 4170 8693
      4132 8693
TIME...MOT...LOC 2016Z 275DEG 50KT 4163 8763 

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH

$$

Carlaw


Action: Continued
Issued At: 2026-08-09 15:41:24

176 
WWUS53 KLOT 092040
SVSLOT

Severe Weather Statement
National Weather Service Chicago/Romeoville
340 PM CDT Sun Aug 9 2026

ILC031-197-INC089-127-092130-
/O.CON.KLOT.SV.W.0226.000000T0000Z-260809T2130Z/
Will IL-Cook IL-Porter IN-Lake IN-
340 PM CDT Sun Aug 9 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM CDT
FOR EAST CENTRAL WILL...SOUTHEASTERN COOK...PORTER AND CENTRAL LAKE
COUNTIES...

At 340 PM CDT, severe thunderstorms were located along a line
extending from Lake Station to near Winfield to near Crete, moving
east at 50 mph.

HAZARD...70 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect considerable tree damage. Damage is likely to mobile 
         homes, roofs, and outbuildings.

Locations impacted include...
Hammond, Gary, Portage, Merrillville, Valparaiso, East Chicago,
Schererville, Hobart, Crown Point, Highland, Munster, Chesterton,
Cedar Lake, Steger, Griffith, Dyer, St. John, Lake Station, Sauk
Village, Lynwood, Crete, Lakes of the Four Seasons, South Haven,
Porter, and Winfield.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4141 8766 4164 8743 4164 8739 4162 8729
      4163 8716 4165 8715 4165 8712 4170 8697
      4170 8693 4132 8693
TIME...MOT...LOC 2040Z 290DEG 43KT 4159 8723 4143 8729 4144 8758 

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH

$$

Kluber


Action: Continued
Issued At: 2026-08-09 16:00:25

794 
WWUS53 KLOT 092059
SVSLOT

Severe Weather Statement
National Weather Service Chicago/Romeoville
359 PM CDT Sun Aug 9 2026

ILC031-197-092109-
/O.CAN.KLOT.SV.W.0226.000000T0000Z-260809T2130Z/
Will IL-Cook IL-
359 PM CDT Sun Aug 9 2026

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL WILL AND
SOUTHEASTERN COOK COUNTIES IS CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

&&

LAT...LON 4139 8753 4147 8749 4152 8725 4159 8715
      4165 8712 4170 8696 4170 8693 4132 8693
TIME...MOT...LOC 2059Z 282DEG 43KT 4157 8698 4141 8704 4142 8740 

$$

INC089-127-092130-
/O.CON.KLOT.SV.W.0226.000000T0000Z-260809T2130Z/
Porter IN-Lake IN-
359 PM CDT Sun Aug 9 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM CDT
FOR PORTER AND CENTRAL LAKE COUNTIES...

At 359 PM CDT, severe thunderstorms were located along a line
extending from near Chesterton to near Valparaiso to near Crown
Point, moving east at 50 mph.

HAZARD...70 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect considerable tree damage. Damage is likely to mobile 
         homes, roofs, and outbuildings.

Locations impacted include...
Portage, Merrillville, Valparaiso, Schererville, Hobart, Crown Point,
Chesterton, Cedar Lake, St. John, Lakes of the Four Seasons, South
Haven, Porter, Winfield, Burns Harbor, Town of Pines, Beverly Shores,
Wheeler, Dune Acres, Boone Grove, and Malden.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4139 8753 4147 8749 4152 8725 4159 8715
      4165 8712 4170 8696 4170 8693 4132 8693
TIME...MOT...LOC 2059Z 282DEG 43KT 4157 8698 4141 8704 4142 8740 

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH

$$

Kluber


Action: Cancelled
Issued At: 2026-08-09 16:00:25

794 
WWUS53 KLOT 092059
SVSLOT

Severe Weather Statement
National Weather Service Chicago/Romeoville
359 PM CDT Sun Aug 9 2026

ILC031-197-092109-
/O.CAN.KLOT.SV.W.0226.000000T0000Z-260809T2130Z/
Will IL-Cook IL-
359 PM CDT Sun Aug 9 2026

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL WILL AND
SOUTHEASTERN COOK COUNTIES IS CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

&&

LAT...LON 4139 8753 4147 8749 4152 8725 4159 8715
      4165 8712 4170 8696 4170 8693 4132 8693
TIME...MOT...LOC 2059Z 282DEG 43KT 4157 8698 4141 8704 4142 8740 

$$

INC089-127-092130-
/O.CON.KLOT.SV.W.0226.000000T0000Z-260809T2130Z/
Porter IN-Lake IN-
359 PM CDT Sun Aug 9 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM CDT
FOR PORTER AND CENTRAL LAKE COUNTIES...

At 359 PM CDT, severe thunderstorms were located along a line
extending from near Chesterton to near Valparaiso to near Crown
Point, moving east at 50 mph.

HAZARD...70 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect considerable tree damage. Damage is likely to mobile 
         homes, roofs, and outbuildings.

Locations impacted include...
Portage, Merrillville, Valparaiso, Schererville, Hobart, Crown Point,
Chesterton, Cedar Lake, St. John, Lakes of the Four Seasons, South
Haven, Porter, Winfield, Burns Harbor, Town of Pines, Beverly Shores,
Wheeler, Dune Acres, Boone Grove, and Malden.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4139 8753 4147 8749 4152 8725 4159 8715
      4165 8712 4170 8696 4170 8693 4132 8693
TIME...MOT...LOC 2059Z 282DEG 43KT 4157 8698 4141 8704 4142 8740 

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH

$$

Kluber


Action: Continued
Issued At: 2026-08-09 16:14:55

334 
WWUS53 KLOT 092114
SVSLOT

Severe Weather Statement
National Weather Service Chicago/Romeoville
414 PM CDT Sun Aug 9 2026

INC089-127-092130-
/O.CON.KLOT.SV.W.0226.000000T0000Z-260809T2130Z/
Porter IN-Lake IN-
414 PM CDT Sun Aug 9 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM CDT
FOR SOUTHERN PORTER AND EAST CENTRAL LAKE COUNTIES...

At 414 PM CDT, severe thunderstorms were located along a line
extending from near Westville to near La Crosse to near Hebron,
moving east at 50 mph.

HAZARD...70 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect considerable tree damage. Damage is likely to mobile 
         homes, roofs, and outbuildings.

Locations impacted include...
Lakes of the Four Seasons, Malden, and Boone Grove.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4136 8730 4144 8723 4144 8703 4148 8697
      4151 8693 4132 8693
TIME...MOT...LOC 2114Z 284DEG 41KT 4151 8681 4135 8688 4136 8723 

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH

$$

Kluber


Action: Expired
Issued At: 2026-08-09 16:22:56

450 
WWUS53 KLOT 092122
SVSLOT

Severe Weather Statement
National Weather Service Chicago/Romeoville
422 PM CDT Sun Aug 9 2026

INC089-127-092132-
/O.EXP.KLOT.SV.W.0226.000000T0000Z-260809T2130Z/
Porter IN-Lake IN-
422 PM CDT Sun Aug 9 2026

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN PORTER AND EAST
CENTRAL LAKE COUNTIES WILL EXPIRE AT 430 PM CDT...

The storms which prompted the warning have moved out of the area.
Therefore, the warning will be allowed to expire.  However, heavy
rain is still possible with these thunderstorms.

&&

LAT...LON 4136 8730 4144 8723 4144 8703 4148 8697
      4151 8693 4132 8693
TIME...MOT...LOC 2122Z 275DEG 50KT 4150 8668 4134 8675 4135 8710 

$$

Kluber



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