Strong to severe thunderstorms developed Tuesday evening as a lake breeze front interacted with intensely hot, humid air inland. 

Heaviest rainfall totals through 9pm Tuesday

Strongest wind gusts 

Set up behind Tuesday’s developing storms. 

Tuesday’s storms formed on an inland moving lake breeze; a contrast between intense, near 100-degree heat and cooling from 70-degree lake waters off Lake Michigan

College of DuPage GOES-East Satellite/Radar animation depicts how the storms erupted in Tuesday’s late afternoon unstable atmosphere

Scattered thunderstorms are again possible Wednesday, most likely in areas south and east of Chicago where a level 1 of 5 (or marginal risk)  severe risk exists.