Officials say several tornadoes have torn through parts of Illinois and Indiana, downing trees and power lines in an area south of Chicago and overwhelming the 911 center with emergency calls. The Kankakee County Sheriff’s Office says a tornado struck down near the Kankakee fairgrounds before traveling northeast into Aroma Park, where it caused extensive damage. In video shared on social media, the twister is seen ripping across a field of farmland near an airport while cars lined the road. The National Weather Service says severe storms were threatening to bring intense tornadoes, damaging winds and very large hail from the southern Plains to the southern Great Lakes.