The National Weather Service has issued a Winter Storm Warning for McHenry, Boone, Ogle and Winnebago counties from 3 a.m. until 9 p.m. Thursday, and for Lake County, Illinois, from 6 a.m. until 9 p.m. Thursday.
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A Winter Weather Advisory will be in effect for Cook, DeKalb, DuPage, Kane; Kendall, La Salle, Will and Lee counties from 3 a.m. until 9 p.m. Thursday. This includes the city of Chicago.
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ABC7 Meteorologist Larry Mowry said areas covered by the Winter Storm Warning could see between three to six inches of snow.
The city and areas to the west could see between one to three inches of snow, Mowry said.
Mowry expects precipitation to start well after midnight and initially be light. It will then intensify in the mid- to late morning.
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Mowry also said there could be periods of sleet and freezing rain in the central part of the area, including the city, before 1 p.m. Northern areas will see all snow, and southern areas will initially see rain. The precipitation will transition to all snow in the afternoon.
The system is expected to wind down in the evening, but some lake effect could linger for the lakefront and Northwest Indiana Thursday night into Friday.
The NWS warns of dangerous travel conditions, with winds gusting as high as 35 mph to go with a mix of rain, snow and sleet.
Stick with ABC7Chicago.com and the ABC7 AccuWeather Team for the latest updates on the winter storm.