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.