The National Weather Service in Chicago has issued a * Severe Thunderstorm Warning for... Will County in northeastern Illinois... Southern DuPage County in northeastern Illinois... Southeastern Cook County in northeastern Illinois... * Until 1215 AM CDT. * At 1055 PM CDT, severe thunderstorms were located along a line extending from near Warrenville to Sheridan, moving east at 35 mph. Aurora Airport in Sugar Grove gusted to 60 mph with these storms. 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, Aurora, Joliet, Naperville, Cicero, Hammond, Bolingbrook, Orland Park, Tinley Park, Oak Lawn, Berwyn, Wheaton, Downers Grove, Lombard, Romeoville, Plainfield, Calumet City, Woodridge, Chicago Heights and Englewood.