This article is no longer being updated. Go here for the latest forecast on Tuesday, Dec. 15.
Wednesday could bring the D.C. region the most significant snowfall in almost two years.
Monday offered a prelude for some areas. While the metro D.C. area just got cold rain, areas from the Blue Ridge Mountains west to the Interstate 81 corridor got a slushy, wet snow leading to some isolated slick spots.
A winter weather advisory went into effect at 6 a.m. Monday for areas including Winchester, Frederick County and Carroll County.
The National Weather Service has declared a winter storm watch for Wednesday for spots northwest of the metro area. Snow is likely to fall in and around the metro area.
Inside the Beltway, some snow may accumulate early before changing to a mainly rain only event with temperatures above freezing. A slushy inch or so is possible.
For Frederick County, western Loudoun County, the I-81 corridor and the Panhandle of West Virginia, this looks to be a snow only event with 8-to-12 inches plus in the forecast. In those areas, expect a winter wonderland to develop throughout the day.
Montgomery, Prince William, central and eastern Loudoun, and Fauquier counties will be on the rain-snow line. Snowfall totals in the northern and western locations of the counties likely will be 4-to-8 inches with totals much lower, between 1 and 4 inches, in the more southern areas.
Those living east of Interstate 95 could get a wintry mix that changes to a cold rain, and Southern Maryland will get almost entirely rain. It’s also important to note that with that deep cold air being pushed in, we could see freezing rain.
This system exits the area early Thursday morning with blustery winds and wind chills in the teens and 20s on Thursday. The weekend is looking dry and cold with highs in the 40s.
Stay with Storm Team4 for updates.