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Winter Weather Advisory: Heavy Snow, More Bitter Cold Coming Our Way

Heavy snow beginning overnight Tuesday could make for a treacherous Wednesday morning commute, according to the National Weather Service.

The National Weather Service in Chicago has issued a winter weather advisory for much of the Chicago area, including Cook and Lake counties.

The advisory is in effect from midnight Tuesday, Dec. 10, through 10 a.m. Wednesday, Dec. 11, according to the NWS. Snow will begin spreading east across the area between midnight and 4 a.m., peaking in intensity over the Chicago area between 5 and 8 a.m. Wednesday and affecting morning commuters. Up to 4 inches of snow accumulation can be expected, according to the advisory.

"Snow will result in treacherous traveling conditions for the Wednesday morning rush hour, with snowfall rates of up to a half-inch per hour possible with the most intense snow," according to the advisory.

Extreme cold temperatures will complicate the situation, causing immediate accumulation and reduced effectiveness of road salt, according to the advisory. 

The temperature overnight Monday reached 2 degrees below zero, with a windchill of 14 below. Expect a high of only 18 on Tuesday, steady temperatures between 14 and 17 Tuesday into Wednesday, with lows bottoming out to 3 below zero Wednesday night after the snowstorm. Temperatures could reach 30 by Friday. 

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