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Home Return to list Tornado Warning 0073 Issued by the Chicago Forecast Office
Action: New Issued At: 2026-08-11 10:36:45
759
WFUS53 KLOT 111536
TORLOT
ILC031-197-111615-
/O.NEW.KLOT.TO.W.0073.260811T1536Z-260811T1615Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Chicago/Romeoville
1036 AM CDT Tue Aug 11 2026
The National Weather Service in Chicago has issued a
* Tornado Warning for...
Central Will County in northeastern Illinois...
Southeastern Cook County in northeastern Illinois...
* Until 1115 AM CDT.
* At 1036 AM CDT, severe thunderstorms capable of producing both
tornadoes and extensive straight line wind damage were located over
Lockport, moving east at 55 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed.
Damage to roofs, windows, and vehicles will occur. Tree
damage is likely.
* These dangerous storms will be near...
Orland Park and Homer Glen around 1040 AM CDT.
Tinley Park, Mokena, and Frankfort around 1045 AM CDT.
Oak Forest, Matteson, Country Club Hills, and Frankfort Square
around 1050 AM CDT.
Chicago Heights, Park Forest, Homewood, Hazel Crest, Richton Park,
Markham, Flossmoor, Glenwood, and Olympia Fields around 1055 AM
CDT.
Other locations in the path of this tornadic thunderstorm include
Lansing, Harvey, Steger, Sauk Village, Lynwood, Ford Heights and
Thornton.
OEMC zones...TORNADO WARNING.
8...9...10...11...and 12.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
This cluster of thunderstorms is capable of producing tornadoes and
widespread significant wind damage. Do not wait to see or hear the
tornado. For your protection move to an interior room on the lowest
floor of a building.
&&
LAT...LON 4147 8753 4147 8778 4149 8791 4172 8792
4172 8791 4178 8791 4176 8754 4175 8754
4175 8753 4174 8754 4174 8752 4173 8752
TIME...MOT...LOC 1536Z 283DEG 48KT 4160 8808
TORNADO...RADAR INDICATED
MAX HAIL SIZE...0.00 IN
$$
Borchardt
Action: Continued Issued At: 2026-08-11 10:48:15
137
WWUS53 KLOT 111547 RRA
SVSLOT
Severe Weather Statement
National Weather Service Chicago/Romeoville
1047 AM CDT Tue Aug 11 2026
ILC031-197-111615-
/O.CON.KLOT.TO.W.0073.000000T0000Z-260811T1615Z/
Will IL-Cook IL-
1047 AM CDT Tue Aug 11 2026
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1115 AM CDT FOR CENTRAL
WILL AND SOUTHEASTERN COOK COUNTIES...
At 1047 AM CDT, a severe squall line capable of producing both
tornadoes and extensive straight line wind damage was located over
Frankfort Square, or over Matteson, moving east at 55 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
These dangerous storms will be near...
Chicago Heights, Lansing, Park Forest, Homewood, Steger, Sauk
Village, Flossmoor, Lynwood, Glenwood, and Olympia Fields around
1055 AM CDT.
OEMC zones...TORNADO WARNING.
8...9...10...11...and 12.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
This cluster of thunderstorms is capable of producing tornadoes and
widespread significant wind damage. Do not wait to see or hear the
tornado. For your protection move to an interior room on the lowest
floor of a building.
&&
LAT...LON 4147 8753 4147 8778 4149 8791 4172 8792
4172 8791 4178 8791 4176 8754 4175 8754
4175 8753 4174 8754 4174 8752 4173 8752
TIME...MOT...LOC 1547Z 283DEG 59KT 4153 8779
TORNADO...RADAR INDICATED
MAX HAIL SIZE...0.00 IN
$$
Borchardt
Action: Continued Issued At: 2026-08-11 10:54:15
216
WWUS53 KLOT 111553
SVSLOT
Severe Weather Statement
National Weather Service Chicago/Romeoville
1053 AM CDT Tue Aug 11 2026
ILC197-111603-
/O.CAN.KLOT.TO.W.0073.000000T0000Z-260811T1615Z/
Will IL-
1053 AM CDT Tue Aug 11 2026
...THE TORNADO WARNING FOR CENTRAL WILL COUNTY IS CANCELLED...
The tornadic thunderstorm which prompted the warning has moved out
of the warned area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 200 PM CDT for
northeastern Illinois...and northwestern Indiana.
&&
LAT...LON 4147 8753 4147 8778 4149 8779 4177 8776
4176 8754 4175 8754 4175 8753 4174 8754
4174 8752 4173 8752
TIME...MOT...LOC 1553Z 276DEG 61KT 4154 8766
$$
ILC031-111615-
/O.CON.KLOT.TO.W.0073.000000T0000Z-260811T1615Z/
Cook IL-
1053 AM CDT Tue Aug 11 2026
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1115 AM CDT FOR
SOUTHEASTERN COOK COUNTY...
At 1053 AM CDT, a confirmed tornado was located over Flossmoor, or
over Homewood, moving east at 70 mph.
HAZARD...Damaging tornado.
SOURCE...Radar confirmed tornado.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This tornado will be near...
Calumet City, Lansing, Steger, South Holland, Sauk Village,
Lynwood, and Ford Heights around 1100 AM CDT.
OEMC zones...TORNADO WARNING.
8...9...10...11...and 12.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
To repeat, a tornado is on the ground. TAKE COVER NOW! Move to a
basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.
This cluster of thunderstorms is capable of producing tornadoes and
widespread significant wind damage. Do not wait to see or hear the
tornado. For your protection move to an interior room on the lowest
floor of a building.
&&
LAT...LON 4147 8753 4147 8778 4149 8779 4177 8776
4176 8754 4175 8754 4175 8753 4174 8754
4174 8752 4173 8752
TIME...MOT...LOC 1553Z 276DEG 61KT 4154 8766
TORNADO...OBSERVED
MAX HAIL SIZE...0.00 IN
$$
Borchardt
Action: Cancelled Issued At: 2026-08-11 10:54:15
216
WWUS53 KLOT 111553
SVSLOT
Severe Weather Statement
National Weather Service Chicago/Romeoville
1053 AM CDT Tue Aug 11 2026
ILC197-111603-
/O.CAN.KLOT.TO.W.0073.000000T0000Z-260811T1615Z/
Will IL-
1053 AM CDT Tue Aug 11 2026
...THE TORNADO WARNING FOR CENTRAL WILL COUNTY IS CANCELLED...
The tornadic thunderstorm which prompted the warning has moved out
of the warned area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 200 PM CDT for
northeastern Illinois...and northwestern Indiana.
&&
LAT...LON 4147 8753 4147 8778 4149 8779 4177 8776
4176 8754 4175 8754 4175 8753 4174 8754
4174 8752 4173 8752
TIME...MOT...LOC 1553Z 276DEG 61KT 4154 8766
$$
ILC031-111615-
/O.CON.KLOT.TO.W.0073.000000T0000Z-260811T1615Z/
Cook IL-
1053 AM CDT Tue Aug 11 2026
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1115 AM CDT FOR
SOUTHEASTERN COOK COUNTY...
At 1053 AM CDT, a confirmed tornado was located over Flossmoor, or
over Homewood, moving east at 70 mph.
HAZARD...Damaging tornado.
SOURCE...Radar confirmed tornado.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This tornado will be near...
Calumet City, Lansing, Steger, South Holland, Sauk Village,
Lynwood, and Ford Heights around 1100 AM CDT.
OEMC zones...TORNADO WARNING.
8...9...10...11...and 12.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
To repeat, a tornado is on the ground. TAKE COVER NOW! Move to a
basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.
This cluster of thunderstorms is capable of producing tornadoes and
widespread significant wind damage. Do not wait to see or hear the
tornado. For your protection move to an interior room on the lowest
floor of a building.
&&
LAT...LON 4147 8753 4147 8778 4149 8779 4177 8776
4176 8754 4175 8754 4175 8753 4174 8754
4174 8752 4173 8752
TIME...MOT...LOC 1553Z 276DEG 61KT 4154 8766
TORNADO...OBSERVED
MAX HAIL SIZE...0.00 IN
$$
Borchardt
Action: Cancelled Issued At: 2026-08-11 11:05:30
560
WWUS53 KLOT 111604 RRA
SVSLOT
Severe Weather Statement
National Weather Service Chicago/Romeoville
1104 AM CDT Tue Aug 11 2026
ILC031-111614-
/O.CAN.KLOT.TO.W.0073.000000T0000Z-260811T1615Z/
Cook IL-
1104 AM CDT Tue Aug 11 2026
...THE TORNADO WARNING FOR SOUTHEASTERN COOK COUNTY IS CANCELLED...
The portion of the storm which prompted the Tornado Warning has
moved out of the area. Therefore, the warning has been cancelled.
However, a Severe Thunderstorm Warning remains in effect until 1115
AM.
&&
LAT...LON 4147 8753 4147 8778 4149 8779 4177 8776
4176 8754 4175 8754 4175 8753 4174 8754
4174 8752 4173 8752
TIME...MOT...LOC 1602Z 283DEG 48KT 4150 8746
$$
Borchardt
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