Residents in southern and western parts of the Chicago area are at the highest risk of severe weather, including damaging winds, hail, and localized flooding. Communities in Kankakee, Iroquois, Newton, and Jasper counties are under a severe thunderstorm watch, with a slight risk of tornadoes in southern areas. The heavy rainfall could exacerbate existing flood conditions, particularly in areas already under flood watches and river flood warnings. Commuters should prepare for delays due to heavy rain during peak travel times, especially in southern suburbs.