Thunderstorms possible this evening/overnight across Chicago area

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated.

CHICAGO — As a cold front approaches from the northwest, a band of showers and thunderstorms is expected to develop along and ahead of the frontal boundary during peak-heating hours this afternoon in the very unstable air from central Wisconsin into northwest Illinois. There could be a few very strong/severe storms in this band during the late afternoon/evening hours, as it moves into western portions of our area (generally west of Interstate-39. The National Storm Prediction Center has outlooked our westernmost portion for a Marginal Risk of Severe storms – see dark-green-shaded area on the headlined map above).

As the evening progresses into the overnight hours, the band of showers/thunderstorms will likely weaken and eventually dissipate, perhaps barely reaching the city or northwest Indiana.