Winter Storm Watches have been issued for Central Illinois ahead of accumulating snowfall Tuesday and Tuesday night. Totals there could exceed over half a foot of snow, while totals closer to home will be on the lighter side.
Low pressure moving out of the Southwest will track Northeast through the Plains later today and Tuesday and into the Ohio River Valley by Wednesday morning. With the current expected track of the system, the heaviest band of snow will fall from Nebraska and Kansas through Missouri and Iowa, Central Illinois and into Indiana where 6" to even 9" of snow is expected. The snow will fall in Northern Illinois and Southern Wisconsin, but totals will more than likely range closer to 2" to 4", maybe 5" along I-88, with lighter amounts falling in Southern Wisconsin. Should the track of the low move a little further north, then those totals may be bumped up but at this point it doesn't look like it should. So, not a big snow event but enough that you'll need to get the shovels and snow blowers out.
The morning hours of Tuesday will be dry, but cloudy. Light snow will move in from southwest to the northeast during the mid to late afternoon, likely after 3pm, with the heaviest of the snow falling after 10pm. There will be just enough lift in the upper levels of the atmosphere to support a period of more moderate snowfall, but that should mainly be overnight. The snow will then taper off from west to east Wednesday morning as the low pulls away. Winds will increase a bit from the Northeast which may cause what snow has fallen to blow around a little through Wednesday afternoon. After that, winter's cold grip doesn't look to ease as temperatures stay in the teens through the weekend.
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