Extreme

Extraordinary threat to life or property

Indiana Extreme Tornado Warning | Effective 08/11/2026 08:59

TORLOT The National Weather Service in Chicago has issued a * Tornado Warning for... Porter County in northwestern Indiana... East central Lake County in northwestern Indiana... * Until 1145 AM CDT. * At 1059 AM CDT, severe thunderstorms capable of producing both tornadoes and extensive straight line wind gusts in excess of 100 mph were located over St. John, or over Schererville, moving east at 70 mph. HAZARD...Tornado and wind gusts in excess of 100 mph. SOURCE...Radar indicated rotation.

Illinois Extreme Tornado Warning | Effective 08-11-2026 08:36

TORLOT 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

Illinois Extreme Tornado Warning | Effective 08/11/2026 08:36

TORLOT 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

Illinois Extreme Tornado Warning | Effective 08/11/2026 08:37

At 1036 AM CDT, a severe squall line capable of producing both tornadoes and extensive straight line wind damage was located near Elwood, or near Wilmington, moving east at 60 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... Wilmington and Elwood around 1040 AM CDT.

Illinois Extreme Tornado Warning | Effective 08/11/2026 08:38

At 1037 AM CDT, a severe squall line capable of producing both tornadoes and extensive straight line wind damage was located over Oak Brook, moving east at 55 mph. HAZARD...Tornadoes. One tornado may be developing over Downers Grove with another over Glendale Heights. 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.

Illinois Extreme Tornado Warning | Effective 08/11/2026 08:40

At 1040 AM CDT, a severe squall line capable of producing both tornadoes and extensive straight line wind damage was located over Homer Glen, 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. Locations impacted include... Joliet, Naperville, Bolingbrook, Downers Grove, Romeoville,

Illinois Extreme Tornado Warning | Effective 08-11-2026 08:27

TORLOT The National Weather Service in Chicago has issued a * Tornado Warning for... Southeastern Kendall County in northeastern Illinois... Will County in northeastern Illinois... Northeastern Grundy County in northeastern Illinois... Northeastern Kankakee County in northeastern Illinois... * Until 1130 AM CDT. * At 1027 AM CDT, severe thunderstorms capable of producing both tornadoes and extensive straight line wind damage were located near Minooka, moving east at 55 mph. HAZARD...Tornado.

Illinois Extreme Tornado Warning | Effective 08-11-2026 08:29

TORLOT The National Weather Service in Chicago has issued a * Tornado Warning for... DuPage County in northeastern Illinois... East central Cook County in northeastern Illinois... * Until 1115 AM CDT. * At 1029 AM CDT, severe thunderstorms capable of producing both tornadoes and extensive straight line wind damage were located over Warrenville, or near Wheaton, moving east at 55 mph. HAZARD...Tornado. SOURCE...Radar indicated rotation. IMPACT...Flying debris will be dangerous to those caught without

Illinois Extreme Tornado Warning | Effective 08/11/2026 08:22

At 1022 AM CDT, a severe squall line capable of producing both tornadoes and extensive straight line wind damage was located near Oswego, 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. Locations impacted include... Aurora, Joliet, Naperville, Bolingbrook, Downers Grove, Romeoville,

Illinois Extreme Tornado Warning | Effective 08/11/2026 08:27

TORLOT The National Weather Service in Chicago has issued a * Tornado Warning for... Southeastern Kendall County in northeastern Illinois... Will County in northeastern Illinois... Northeastern Grundy County in northeastern Illinois... Northeastern Kankakee County in northeastern Illinois... * Until 1130 AM CDT. * At 1027 AM CDT, severe thunderstorms capable of producing both tornadoes and extensive straight line wind damage were located near Minooka, moving east at 55 mph. HAZARD...Tornado.
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