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Home Return to list Severe Thunderstorm Warning 0244 Issued by the Chicago Forecast Office
Action: New Issued At: 2026-08-11 10:49:15
160
WUUS53 KLOT 111549
SVRLOT
ILC091-197-INC089-111-111645-
/O.NEW.KLOT.SV.W.0244.260811T1549Z-260811T1645Z/
BULLETIN - EAS ACTIVATION REQUESTED
Severe Thunderstorm Warning
National Weather Service Chicago/Romeoville
1049 AM CDT Tue Aug 11 2026
The National Weather Service in Chicago has issued a
* Severe Thunderstorm Warning for...
Southeastern Will County in northeastern Illinois...
Northeastern Kankakee County in northeastern Illinois...
Northern Newton County in northwestern Indiana...
Lake County in northwestern Indiana...
* Until 1145 AM CDT.
* At 1048 AM CDT, severe thunderstorms were located along a line
extending from Western Springs to Frankfort to near Lakewood
Shores, moving east at 50 mph.
THESE ARE DESTRUCTIVE STORMS producing measured winds gusts of 80
to over 90 mph.
HAZARD...90 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...You are in a life-threatening situation. Flying debris
may be deadly to those caught without shelter. Mobile
homes will be heavily damaged or destroyed. Homes and
businesses will have substantial roof and window damage.
Expect extensive tree damage and power outages.
* Severe thunderstorms will be near...
Bourbonnais, Manteno, and Peotone around 1055 AM CDT.
Bradley around 1100 AM CDT.
Hammond, Schererville, Lansing, Munster, Dyer, St. John, Lynwood,
and Beecher around 1105 AM CDT.
Gary, East Chicago, Highland, Cedar Lake, Momence, Griffith,
Whiting, and Grant Park around 1110 AM CDT.
Merrillville, Crown Point, and Lake Dalecarlia around 1115 AM CDT.
Hobart, Lowell, Lake Station, Winfield, and New Chicago around
1120 AM CDT.
Portage, Lake Village, and Lakes of the Four Seasons around 1125
AM CDT.
Roselawn and Shelby around 1130 AM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.
This is an EXTREMELY DANGEROUS SITUATION with tornado like wind
speeds expected. Mobile homes and high profile vehicles are
especially susceptible to winds of this magnitude and may be
overturned. For your protection move to an interior room on the
lowest floor of a building. These storms have the potential to cause
serious injury and significant property damage.
&&
LAT...LON 4122 8728 4095 8728 4122 8798 4142 8788
4132 8754 4147 8753 4171 8752 4167 8747
4167 8744 4168 8743 4167 8742 4165 8744
4164 8742 4162 8729 4162 8722 4124 8722
TIME...MOT...LOC 1548Z 275DEG 42KT 4181 8790 4151 8786 4121 8808
TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...DESTRUCTIVE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...90 MPH
$$
Izzi
Action: Continued Issued At: 2026-08-11 10:55:15
231
WWUS53 KLOT 111554
SVSLOT
Severe Weather Statement
National Weather Service Chicago/Romeoville
1054 AM CDT Tue Aug 11 2026
ILC091-197-INC089-111-111645-
/O.CON.KLOT.SV.W.0244.000000T0000Z-260811T1645Z/
Will IL-Kankakee IL-Newton IN-Lake IN-
1054 AM CDT Tue Aug 11 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1145 AM CDT
FOR SOUTHEASTERN WILL...NORTHEASTERN KANKAKEE...NORTHERN NEWTON AND
LAKE COUNTIES...
At 1054 AM CDT, severe thunderstorms were located along a line
extending from Markham to near Crete to near Bradley, moving east at
75 mph.
THESE ARE DESTRUCTIVE STORMS producing measured winds gusts of 90 to
over 100 mph.
HAZARD...100 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...You are in a life-threatening situation. Flying debris may
be deadly to those caught without shelter. Mobile homes
will be destroyed. Expect considerable damage to homes and
businesses. Expect extensive tree damage and power outages.
These severe storms will be near...
Hammond, Gary, Merrillville, East Chicago, Schererville, Lansing,
Crown Point, Highland, Munster, and Cedar Lake around 1100 AM CDT.
Hobart, Lake Village, Lake Station, and Winfield around 1105 AM
CDT.
Other locations in the path of these severe thunderstorms include
Lakes of the Four Seasons, Roselawn, New Chicago and Shelby.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.
This is an EXTREMELY DANGEROUS SITUATION with tornado like wind
speeds expected. Mobile homes and high profile vehicles are
especially susceptible to winds of this magnitude and may be
overturned. For your protection move to an interior room on the
lowest floor of a building. These storms have the potential to cause
serious injury and significant property damage.
&&
LAT...LON 4122 8728 4095 8728 4122 8798 4142 8788
4132 8754 4147 8753 4171 8752 4167 8747
4167 8744 4168 8743 4167 8742 4165 8744
4164 8742 4162 8729 4162 8722 4124 8722
TIME...MOT...LOC 1554Z 283DEG 65KT 4161 8768 4142 8762 4117 8781
TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...DESTRUCTIVE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...100 MPH
$$
Birk
Action: Continued Issued At: 2026-08-11 11:10:16
631
WWUS53 KLOT 111609
SVSLOT
Severe Weather Statement
National Weather Service Chicago/Romeoville
1109 AM CDT Tue Aug 11 2026
ILC091-197-INC089-111-111645-
/O.CON.KLOT.SV.W.0244.000000T0000Z-260811T1645Z/
Will IL-Kankakee IL-Newton IN-Lake IN-
1109 AM CDT Tue Aug 11 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1145 AM CDT
FOR SOUTHEASTERN WILL...NORTHEASTERN KANKAKEE...NORTHERN NEWTON AND
LAKE COUNTIES...
At 1109 AM CDT, severe thunderstorms were located along a line
extending from Gary to Winfield to near Lake Village, moving east at
80 mph.
THESE ARE DESTRUCTIVE STORMS producing measured winds gusts of 90
to over 100 mph.
HAZARD...100 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...You are in a life-threatening situation. Flying debris may
be deadly to those caught without shelter. Mobile homes
will be destroyed. Expect considerable damage to homes and
businesses. Expect extensive tree damage and power outages.
Locations impacted include...
Hammond, Gary, Portage, Merrillville, East Chicago, Schererville,
Hobart, Lansing, Crown Point, Highland, Munster, Cedar Lake, Lowell,
Momence, Lake Village, Griffith, Dyer, St. John, Lake Station,
Lynwood, Lakes of the Four Seasons, Whiting, Winfield, Beecher, and
Roselawn.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.
This is an EXTREMELY DANGEROUS SITUATION with tornado like wind
speeds expected. Mobile homes and high profile vehicles are
especially susceptible to winds of this magnitude and may be
overturned. For your protection move to an interior room on the
lowest floor of a building. These storms have the potential to cause
serious injury and significant property damage.
&&
LAT...LON 4122 8728 4095 8728 4115 8775 4136 8770
4132 8754 4147 8753 4171 8752 4167 8747
4167 8744 4168 8743 4167 8742 4165 8744
4164 8742 4162 8729 4162 8722 4124 8722
TIME...MOT...LOC 1609Z 277DEG 69KT 4158 8734 4139 8728 4114 8747
TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...DESTRUCTIVE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...100 MPH
$$
Birk
Action: Continued Issued At: 2026-08-11 11:25:46
121
WWUS53 KLOT 111625
SVSLOT
Severe Weather Statement
National Weather Service Chicago/Romeoville
1125 AM CDT Tue Aug 11 2026
ILC091-197-111634-
/O.CAN.KLOT.SV.W.0244.000000T0000Z-260811T1645Z/
Will IL-Kankakee IL-
1125 AM CDT Tue Aug 11 2026
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN WILL AND
NORTHEASTERN KANKAKEE COUNTIES IS CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 200 PM CDT for
northwestern Indiana.
&&
LAT...LON 4124 8722 4122 8728 4095 8728 4105 8751
4121 8745 4130 8743 4143 8742 4165 8744
4166 8744 4164 8742 4163 8736 4162 8729
4162 8722
TIME...MOT...LOC 1624Z 275DEG 42KT 4157 8712 4138 8706 4113 8726
$$
INC089-111-111645-
/O.CON.KLOT.SV.W.0244.000000T0000Z-260811T1645Z/
Newton IN-Lake IN-
1125 AM CDT Tue Aug 11 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1145 AM CDT
FOR NORTHERN NEWTON AND LAKE COUNTIES...
At 1124 AM CDT, severe thunderstorms were located along a line
extending from South Haven to near Kouts to near Roselawn, moving
east at 50 mph.
THESE ARE DESTRUCTIVE STORMS producing measured winds gusts over 80
mph.
HAZARD...80 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be heavily damaged. Expect
considerable damage to roofs, windows, and vehicles.
Extensive tree damage and power outages are likely.
Locations impacted include...
Hammond, Gary, Portage, Merrillville, East Chicago, Schererville,
Hobart, Crown Point, Cedar Lake, Lowell, Lake Village, Griffith, Lake
Station, Lakes of the Four Seasons, Winfield, Roselawn, New Chicago,
Lake Dalecarlia, Shelby, Schneider, Thayer, and Sumava Resorts.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.
This is an EXTREMELY DANGEROUS SITUATION with tornado like wind
speeds expected. Mobile homes and high profile vehicles are
especially susceptible to winds of this magnitude and may be
overturned. For your protection move to an interior room on the
lowest floor of a building. These storms have the potential to cause
serious injury and significant property damage.
&&
LAT...LON 4124 8722 4122 8728 4095 8728 4105 8751
4121 8745 4130 8743 4143 8742 4165 8744
4166 8744 4164 8742 4163 8736 4162 8729
4162 8722
TIME...MOT...LOC 1624Z 275DEG 42KT 4157 8712 4138 8706 4113 8726
TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...DESTRUCTIVE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...80 MPH
$$
Birk
Action: Cancelled Issued At: 2026-08-11 11:25:46
121
WWUS53 KLOT 111625
SVSLOT
Severe Weather Statement
National Weather Service Chicago/Romeoville
1125 AM CDT Tue Aug 11 2026
ILC091-197-111634-
/O.CAN.KLOT.SV.W.0244.000000T0000Z-260811T1645Z/
Will IL-Kankakee IL-
1125 AM CDT Tue Aug 11 2026
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN WILL AND
NORTHEASTERN KANKAKEE COUNTIES IS CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 200 PM CDT for
northwestern Indiana.
&&
LAT...LON 4124 8722 4122 8728 4095 8728 4105 8751
4121 8745 4130 8743 4143 8742 4165 8744
4166 8744 4164 8742 4163 8736 4162 8729
4162 8722
TIME...MOT...LOC 1624Z 275DEG 42KT 4157 8712 4138 8706 4113 8726
$$
INC089-111-111645-
/O.CON.KLOT.SV.W.0244.000000T0000Z-260811T1645Z/
Newton IN-Lake IN-
1125 AM CDT Tue Aug 11 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1145 AM CDT
FOR NORTHERN NEWTON AND LAKE COUNTIES...
At 1124 AM CDT, severe thunderstorms were located along a line
extending from South Haven to near Kouts to near Roselawn, moving
east at 50 mph.
THESE ARE DESTRUCTIVE STORMS producing measured winds gusts over 80
mph.
HAZARD...80 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be heavily damaged. Expect
considerable damage to roofs, windows, and vehicles.
Extensive tree damage and power outages are likely.
Locations impacted include...
Hammond, Gary, Portage, Merrillville, East Chicago, Schererville,
Hobart, Crown Point, Cedar Lake, Lowell, Lake Village, Griffith, Lake
Station, Lakes of the Four Seasons, Winfield, Roselawn, New Chicago,
Lake Dalecarlia, Shelby, Schneider, Thayer, and Sumava Resorts.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.
This is an EXTREMELY DANGEROUS SITUATION with tornado like wind
speeds expected. Mobile homes and high profile vehicles are
especially susceptible to winds of this magnitude and may be
overturned. For your protection move to an interior room on the
lowest floor of a building. These storms have the potential to cause
serious injury and significant property damage.
&&
LAT...LON 4124 8722 4122 8728 4095 8728 4105 8751
4121 8745 4130 8743 4143 8742 4165 8744
4166 8744 4164 8742 4163 8736 4162 8729
4162 8722
TIME...MOT...LOC 1624Z 275DEG 42KT 4157 8712 4138 8706 4113 8726
TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...DESTRUCTIVE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...80 MPH
$$
Birk
Action: Expired Issued At: 2026-08-11 11:37:16
500
WWUS53 KLOT 111636 RRA
SVSLOT
Severe Weather Statement
National Weather Service Chicago/Romeoville
1136 AM CDT Tue Aug 11 2026
INC089-111-111646-
/O.EXP.KLOT.SV.W.0244.000000T0000Z-260811T1645Z/
Newton IN-Lake IN-
1136 AM CDT Tue Aug 11 2026
...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN NEWTON AND LAKE
COUNTIES WILL EXPIRE AT 1145 AM CDT...
The storms which prompted the warning have weakened below severe
limits, and have exited the warned area. Therefore, the warning will
be allowed to expire.
A Severe Thunderstorm Watch remains in effect until 200 PM CDT for
northwestern Indiana.
&&
LAT...LON 4124 8722 4122 8728 4095 8728 4105 8751
4121 8745 4130 8743 4143 8742 4165 8744
4166 8744 4164 8742 4163 8736 4162 8729
4162 8722
TIME...MOT...LOC 1636Z 275DEG 42KT 4156 8698 4137 8692 4112 8712
$$
Birk
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