As a warm front advances through north central and northeast Illinois, the Chicago area faces a significant threat of severe thunderstorms and hail. The National Weather Service has issued warnings for numerous counties across Illinois and Indiana, highlighting the potential for damaging winds and large hail. The affected counties in Illinois include Winnebago, Boone, McHenry, Lake, Ogle, Lee, DeKalb, Kane, DuPage, LaSalle, Kendall, Grundy, Kankakee, Livingston, Iroquois, Ford, and parts of Cook and Will counties. In Indiana, warnings are in effect for Lake, Porter, Newton, Jasper, and Benton counties.