Illinois, Indiana Severe Severe Thunderstorm Warning | Effective 08/11/2026 09:09

Headline: 
Severe Thunderstorm Warning issued August 11 at 11:09AM CDT until August 11 at 11:45AM CDT by NWS Chicago IL
Event: 
Severe Thunderstorm Warning
Urgency: 
Immediate
Effective: 
August 11, 2026 - 9:09am
Expires: 
August 11, 2026 - 9:45am
Description: 
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.
Instruction: 
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.
Area Description: 
Kankakee, IL; Will, IL; Lake, IN; Newton, IN
Forcast Office: 
NWS Chicago IL
Sender: 
w-nws.webmaster@noaa.gov