Areas along Interstate 80 and to its south should be on alert for storms until about 9 p.m., said the National Weather Service in Chicago.
A line of strong storms is expected Wednesday night. The main threat for storms will generally be along and south of I-80 in La Salle, Bureau, Putnam and Livingston counties. Isolated storms are possible elsewhere.
Winds strong enough to take down tree limbs, lightning strikes and downpours of rain are possible with these storms.