Line of showers and thunderstorms expected to move through the Chicago area from the west after midnight

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Update 5AM CDT…

As of 5AM CDT the cold front is approaching and expected to pass through Chicago and move east out over Lake Michigan early this Sunday morning. Ahead of the front light southerly winds and scattered light showers along with patchy fog persist, while winds shift to the west and showers end behind the front.


Showers and embedded thunderstorms will occur along and ahead of a cold front as it moves through northern Illinois, passing through the Chicago area from west to east between midnight tonight and sunrise Sunday morning. Locally heavy downpours and gusty winds could accompany some of the stronger storms.

There will be a 10 to 40% chance of a thunderstorm within 12 miles of a given location overnight (see brown-shaded area on the highlighted map), as the frontal band of precipitation moves through.

Follow the progression of the cold front/associated band of showers/thunderstorms as shown on the current Regional weather mosaic below.

Central Great Lakes sector loop

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