Chicago is located in Cook County, Illinois. This page shows active weather alerts affecting Chicago issued by the National Weather Service.
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Chicago sits on the southwestern shore of Lake Michigan in Cook County, Illinois, where lake-effect snow, blizzards, and bitter Arctic cold dominate winter weather. Spring and summer bring severe thunderstorms with damaging wind and hail, occasional tornadoes, and lakeshore flooding during strong northeast wind events.
Common alert types for this area:
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