Illinois, Indiana Severe Thunderstorm Warning | Effective 05/04/2026 15:50

Headline: 
Severe Thunderstorm Warning issued May 4 at 5:50PM CDT until May 4 at 6:30PM CDT by NWS Chicago IL
Event: 
Severe Thunderstorm Warning
Urgency: 
Immediate
Effective: 
May 4, 2026 - 3:50pm
Expires: 
May 4, 2026 - 4:30pm
Description: 
At 550 PM CDT, a severe thunderstorm was located over Thornton, or over Homewood, moving east at 40 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. Locations impacted include... Hammond, Gary, Tinley Park, Calumet City, Portage, Merrillville, Chicago Heights, East Chicago, Schererville, Hobart, Lansing, Oak Forest, Harvey, Highland, Munster, Dolton, Homewood, Matteson, South Holland, Griffith, Country Club Hills, Dyer, South Deering, Hazel Crest, and Lake Station.
Instruction: 
For your protection move to an interior room on the lowest floor of a building.
Area Description: 
Cook, IL; Lake, IN
Forcast Office: 
NWS Chicago IL
Sender: 
w-nws.webmaster@noaa.gov