Severe thunderstorms may develop over a large section of northern Illinois and northwestern Indiana Sunday evening.
The National Weather Service’s Chicago office has identified a zone extending from west of Dixon to east of Valparaiso, Ind., as a likely area for severe weather. The zone is situated south of Rockford and Elgin and much of the city of Chicago, but takes in Ottawa and Kankakee to the south.
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Damaging winds, hail and even flash flooding may occur from 7 p.m. to midnight. Additional storms may arrive from the west after midnight, according to the NWS.