Get ready for a messy commute.
A winter weather advisory will be in effect today from noon until 9 p.m., with 3 to 6 inches of snow expected to fall. Some areas could see totals greater than 6 inches should thundersnow occur. Thundersnow, which indicates that there is greater instability in the atmosphere, typically results in heavier snowfall, according to National Geographic,
The following counties are included in the advisory: Boone, Cook, DuPage, Grundy, Kane, Kendall, Lake, Lee, McHenry, Ogle, Will and Winnebago.
The National Weather Service in Chicago says that "there remains a high degree of uncertainty with respect to snow accumulation," with the precipitation starting as rain or wet snow, possibly mixed with sleet, during the early afternoon hours.
As of 9:30 a.m., a tenth of an inch of freezing rain had fallen in Kankakee. Moderate snow started in Morris, located in Grundy County, at 8:28 a.m., according to the National Weather Service.
The roads could definitely get messy.
"Nasty travel is in store along much of the I-90 and I-94 corridors from northern Illinois to Michigan Tuesday into Wednesday," Alex Sosnowski, meteorologist for Accuweather.com, wrote in his weather update. "The storm will pack a several-hour period with windswept heavy snow and low visibility in this area. Road conditions most of the time will be snow-covered to slushy with icy spots."
The National Weather Service warns that the type of heavy, wet snow that's expected is "sometimes referred to as heart attack snow.
"Due to the weight of the snow, caution should be exercised to not overexert yourself when shoveling," said National Weather Service officials.
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