
CHICAGO (WLS) -- Rain and drizzle over the Chicago area will switch over to snow in the evening Friday and continue into Saturday.
Dense fog persisted throughout the afternoon, creating many areas of low visibility, and a wintry mix falling Friday morning created sloppy and slushy roads across the area.
A Dense Fog Advisory is in effect until 9 p.m. Friday for much of the Chicago area, including Cook, Will, DuPage, Lake and McHenry counties.

The low visibility is impacting operations at Chicago's airports. A ground stop is in place for arriving flights at Midway Airport and there are gate hold and taxi delays between 15 and 30 minutes for departing flights. Midway reported 109 flights canceled and delays averaging 42 minutes as of 4 p.m. At O'Hare Airport, 33 flights have been canceled and there are delays of less than 15 minutes. as of 4 p.m.
Precipitation is expected to transition back to snow in the evening Friday and will become heavy at times. A Winter Weather Advisory is scheduled to go into effect for the Chicago area at 6 p.m. and remain in effect through midnight Saturday.

Most of the snow will fall between 10 p.m. Friday and 8 a.m. Saturday. By the time the storm moves out, areas to the south are expected to have 1 inch of snow accumulation, with areas to the north and west getting as much as 6 inches of snow accumulation.
By 11 a.m. Friday, Aurora had received 2.5 inches of snow, Bourbonnais 2.3 inches of snow and Darien, Hawthorne Woods and La Grange Park each received 2 inches of snow.
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Last weekend, a major winter storm dumped several inches of snow on Chicago and forced the cancellation of hundreds of flights at the city's airports.
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The previous weekend, another storm system brought high winds that pounded the Chicago lakefront with waves and heavy rain.
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