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Home Return to list Severe Thunderstorm Warning 0243 Issued by the Chicago Forecast Office
Action: New Issued At: 2026-08-11 10:20:44
363
WUUS53 KLOT 111520
SVRLOT
ILC031-043-091-197-111615-
/O.NEW.KLOT.SV.W.0243.260811T1520Z-260811T1615Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Chicago/Romeoville
1020 AM CDT Tue Aug 11 2026
The National Weather Service in Chicago has issued a
* Severe Thunderstorm Warning for...
Will County in northeastern Illinois...
Kankakee County in northeastern Illinois...
DuPage County in northeastern Illinois...
Cook County in northeastern Illinois...
* Until 1115 AM CDT.
* At 1019 AM CDT, severe thunderstorms were located along a line
extending from Huntley to near Oswego to near Seneca, 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.
* Severe thunderstorms will be near...
Aurora, Joliet, Naperville, Elgin, Bolingbrook, Hoffman Estates,
Bartlett, Streamwood, Romeoville, and Plainfield around 1025 AM
CDT.
Schaumburg, Wheaton, Carol Stream, Hanover Park, Glendale Heights,
Woodridge, Lockport, Barrington, Braidwood, and Coal City around
1030 AM CDT.
Palatine, Downers Grove, Lombard, Addison, Elk Grove Village, Glen
Ellyn, New Lenox, Homer Glen, Lemont, and Wilmington around 1035
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 a DANGEROUS SITUATION. These storms are producing widespread
wind damage across. SEEK SHELTER NOW inside a sturdy structure and
stay away from windows!
&&
LAT...LON 4206 8767 4189 8761 4190 8760 4185 8761
4173 8752 4101 8753 4099 8825 4207 8826
4207 8824 4215 8824 4215 8776
TIME...MOT...LOC 1519Z 279DEG 46KT 4214 8842 4166 8835 4132 8852
TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH
$$
Izzi
Action: Continued Issued At: 2026-08-11 10:42:45
849
WWUS53 KLOT 111542
SVSLOT
Severe Weather Statement
National Weather Service Chicago/Romeoville
1042 AM CDT Tue Aug 11 2026
ILC031-043-091-197-111615-
/O.CON.KLOT.SV.W.0243.000000T0000Z-260811T1615Z/
Will IL-Kankakee IL-DuPage IL-Cook IL-
1042 AM CDT Tue Aug 11 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1115 AM CDT
FOR WILL...KANKAKEE...DUPAGE AND COOK COUNTIES...
At 1042 AM CDT, severe thunderstorms were located along a line
extending from Schaumburg to near New Lenox to near Lakewood Shores,
moving east at 60 mph. This line of storms has a history of
producing extensive wind damage.
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...
Chicago, Arlington Heights, Schaumburg, Des Plaines, Orland Park,
Tinley Park, Mount Prospect, Hoffman Estates, Downers Grove,
Elmhurst, Cicero, Oak Lawn, Berwyn, Oak Park, Park Ridge, Niles,
Midway Airport, Austin, Burbank, Kankakee, Skokie, Chicago
Heights, Irving Park, West Town, South Lawndale, Roseland, Chicago
Lawn, Englewood, Harvey, Blue Island, Hammond, Evanston, Calumet
City, West Ridge, Bridgeport, Lake View, Chicago Loop, Lincoln
Park, South Shore, Lansing and Hopkins Park.
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 a DANGEROUS SITUATION. These storms are producing widespread
wind damage across the Chicago metro. SEEK SHELTER NOW inside a
sturdy structure and stay away from windows.
&&
LAT...LON 4206 8767 4189 8761 4190 8760 4185 8761
4173 8752 4101 8753 4099 8825 4207 8826
4207 8824 4215 8824 4215 8776
TIME...MOT...LOC 1542Z 284DEG 53KT 4204 8809 4156 8794 4122 8811
TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...OBSERVED
MAX WIND GUST...70 MPH
$$
Birk
Action: Continued Issued At: 2026-08-11 10:59:45
436
WWUS53 KLOT 111559
SVSLOT
Severe Weather Statement
National Weather Service Chicago/Romeoville
1059 AM CDT Tue Aug 11 2026
ILC031-043-091-197-111615-
/O.CON.KLOT.SV.W.0243.000000T0000Z-260811T1615Z/
Will IL-Kankakee IL-DuPage IL-Cook IL-
1059 AM CDT Tue Aug 11 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1115 AM CDT
FOR WILL...KANKAKEE...SOUTHEASTERN DUPAGE AND COOK COUNTIES...
At 1058 AM CDT, severe thunderstorms were located along a line
extending from Lake View to near St. John to near Momence, moving
east at 70 mph. This line has a history of producing extensive wind
damage.
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...
Chicago, Joliet, Cicero, Hammond, Bolingbrook, Orland Park, Tinley
Park, Oak Lawn, Berwyn, Oak Park, Downers Grove, Elmhurst, Lombard,
Romeoville, Calumet City, Addison, Woodridge, Chicago Heights, West
Town, Chicago Lawn, Englewood, Austin, South Shore, Roseland, and
Midway Airport.
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 a DANGEROUS SITUATION. These storms are producing widespread
wind damage across the southern Chicago metro. SEEK SHELTER NOW
inside a sturdy structure and stay away from windows.
&&
LAT...LON 4189 8761 4190 8760 4185 8761 4173 8752
4101 8753 4099 8825 4151 8808 4193 8799
4196 8772 4197 8764
TIME...MOT...LOC 1558Z 287DEG 62KT 4194 8767 4140 8752 4112 8769
TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...OBSERVED
MAX WIND GUST...70 MPH
$$
Birk
Action: Expired Issued At: 2026-08-11 11:14:46
956
WWUS53 KLOT 111614
SVSLOT
Severe Weather Statement
National Weather Service Chicago/Romeoville
1114 AM CDT Tue Aug 11 2026
ILC031-043-091-197-111624-
/O.EXP.KLOT.SV.W.0243.000000T0000Z-260811T1615Z/
Will IL-Kankakee IL-DuPage IL-Cook IL-
1114 AM CDT Tue Aug 11 2026
...THE SEVERE THUNDERSTORM WARNING FOR WILL...KANKAKEE...SOUTHEASTERN
DUPAGE AND COOK COUNTIES WILL EXPIRE AT 1115 AM CDT...
The storms which prompted the warning have moved out of the area.
Therefore, the warning will be allowed to expire. However, gusty
winds and heavy rain are still possible with these thunderstorms.
A Severe Thunderstorm Watch remains in effect until 200 PM CDT for
central, northeastern and east central Illinois...and northwestern
Indiana.
&&
LAT...LON 4189 8761 4190 8760 4185 8761 4173 8752
4101 8753 4099 8825 4151 8808 4193 8799
4196 8772 4197 8764
TIME...MOT...LOC 1614Z 279DEG 46KT 4191 8742 4137 8727 4109 8745
$$
Birk
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