The National Weather Service in Chicago has issued a winter weather advisory for much of the Chicago metro area, including DuPage, Cook and Kane counties.
McHenry County is NOT listed in the advisory, yet.
As of 11 a.m. Tuesday, the forecast was calling for snow showers for Crystal Lake and Cary, beginning tonight and into Wednesday morning. Accumulation could be 1 to 2 inches. Check back to Patch for updates on new weather advisories, alerts and warnings.
However, those traveling southward tonight or tomorrow morning for work or other reasons, should brace for heavier snow accumulation.
Winter Weather Advisory for Kane, Cook and DuPage Counties:
The advisory for southern and western Chicagoland counties is in effect from midnight Tuesday, Dec. 10, through 10 a.m. Wednesday, Dec. 11, according to the NWS.
In those areas, 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 17 on Tuesday, steady temperatures between 14 and 17 Tuesday into Wednesday, with lows bottoming out to 3 below zero Wednesday night after the snowstorm.