VIRGINIA -- The Virginia Department of Transportation (VDOT) warned drivers to avoid unnecessary travel in the state as a winter storm hits the area.

Southern, central and western parts of Virginia can expect heavy snow, with some areas accumulating over a foot.

VDOT says they have crews plowing and treating roads in affected areas, but warn drivers to take it slow and be careful around the slow-moving equipment. Until the storm is over, VDOT is not recommending travel.

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Anyone who must travel is encouraged to check 511 for road conditions or their local weather forecast.

Additionally, as temperatures drop over night, VDOT warns that some areas may refreeze for the Monday morning commute.

In the District, D.C.’s snow crews prepared for freezing temperatures by pre-treating roads – although snow is not expected to affect the area.

A state of emergency has been declared in Virginia.

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