Isolated thunderstorms developed Wednesday south of I-80 while rain fell to the north.
Another round of storms hit the Chicago area just two days after strong Labor Day storms caused damage and flooding for many.
Scattered thunderstorms are expected to continue as a cold front moves across northern Illinois during the afternoon and evening hours, bringing the threat for heavy rain in areas that have already seen flooding this week. Some storms could become strong-to-severe with gusty winds with rain most likely during the evening hours.
Highs Wednesday ranged from the low-80s to near 90 degrees across the area, but it felt like 90s due to high humidity. Temperatures dropped into the low-60s heading into the evening hours, however, and will only rise into the upper-60s and low-70s Thursday.
The storms are expected to taper off to scattered to showers overnight, but a few isolated storms will still be possible heading into Thursday morning. Scattered showers and storms will likely stay south of I-88, moving sotuh of I-80 and into northwest Indiana before ending mid-day Thursday.
Large waves and strong rip currently are expected to make for dangerous swimming conditions along the shores of Lake Michigan.
The chance for scattered showers and storms will continue Friday and through the weekend as temperature highs stay in the low-70s.