Immediate

Responsive action SHOULD be taken immediately

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 Severe Severe Thunderstorm Warning | Effective 08/11/2026 08:59

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

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

Indiana Severe Severe Thunderstorm Warning | Effective 08/11/2026 08:34

SVRIWX The National Weather Service in Northern Indiana has issued a * Severe Thunderstorm Warning for... Southern Wabash County in north central Indiana... Grant County in central Indiana... Southern Huntington County in northeastern Indiana... Western Blackford County in east central Indiana... Southwestern Wells County in northeastern Indiana... Southeastern Cass County in north central Indiana... Southern Miami County in north central Indiana... * Until 1215 PM EDT.

Ohio Severe Flash Flood Warning | Effective 08/11/2026 08:35

At 1135 AM EDT, the public reported thunderstorms producing heavy rain across the warned area. Between 1.5 and 4 inches of rain have fallen. Additional rainfall amounts up to 1 inch are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Public reported. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas.

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.

North Dakota Severe Severe Thunderstorm Warning | Effective 08/11/2026 08:38

SVRFGF The National Weather Service in Grand Forks has issued a * Severe Thunderstorm Warning for... Western Ransom County in southeastern North Dakota... South central Barnes County in southeastern North Dakota... * Until 1145 AM CDT. * At 1038 AM CDT, a severe thunderstorm was located over Litchville, or 18 miles southwest of Valley City, moving southeast at 25 mph. HAZARD...Golf ball size hail and 60 mph wind gusts. SOURCE...Radar indicated. IMPACT...People and animals outdoors will be injured. Expect hail

Ohio, West Virginia Severe Severe Thunderstorm Warning | Effective 08/11/2026 08:38

SVRRLX The National Weather Service in Charleston West Virginia has issued a * Severe Thunderstorm Warning for... East central Meigs County in southeastern Ohio... Eastern Washington County in southeastern Ohio... Pleasants County in northwestern West Virginia... Northwestern Calhoun County in north central West Virginia... Ritchie County in northwestern West Virginia... Wirt County in northwestern West Virginia... Tyler County in northern West Virginia...

Ohio Severe Flash Flood Warning | Effective 08/11/2026 08:38

FFWPBZ The National Weather Service in Pittsburgh has extended the * Flash Flood Warning for... Southwestern Guernsey County in east central Ohio... Monroe County in east central Ohio... Noble County in east central Ohio... * Until 245 PM EDT. * At 1138 AM EDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Up to 1 inch of rain has fallen. Additional rainfall amounts up to 2 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly.
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