Weather Forecast Office

Thunderstorms Likely Early Thursday Morning Strong to Severe Storms Possible Late Tonight Becoming Hot and Humid Thursday Very Hot and Humid Friday Dangerous Combination of Heat and Humidity
A complex of thunderstorms is expected to continue developing tonight over Iowa, and then track east southeast. These storms will likely reach parts of northern Illinois early Thursday morning, with strong to severe storms possible. Damaging winds and heavy rainfall w/ localized flooding are the main threats.

Data Courtesy of Chicago Weather Forecast Office