MORE snow is on the way! An arctic front will move across the Mid-Atlantic on Thursday. Cold air will be chasing the precipitation and we expect a wave of moisture along the cold front. Rain will change over to snow with falling temperatures and pavement and elevated surfaces becoming snowcovered and slick. The greatest potential for accumulation will be across Northern Virginia and Central Maryland (potentially very bad timing, right around the morning rush hour) with most model guidance showing 1 to 3 inches. As the front slowly slides to the south, the rain will change to snow across central and eastern Virginia by Thursday afternoon with up to 1 inch of snow possible.
Guidance is still “everyone” for the second storm system that could impact the Mid-Atlantic late Friday into Saturday. Much colder air will move into the region Thursday night into Friday. An area of low pressure is expected to develop along the southeast coast. How far north and west low pressure gets is yet to be determined. However, there is at least a 60 percent chance that locations along and EAST of I-95 will see at least some accumulating snow. This would also be an overrunning event with moisture overriding the colder air at the surface. The Mid-Atlantic Region always does well with overrunning events and they can be overachievers. Therefore, even if low-pressure tracks further to the east, coastal areas will likely see snow.
The European model shows low pressure along the coast. This would mean a wintry mix for much of Hampton Roads and heavy snow northwest. Accumulations would be significant IF this scenario happens. The GFS (American) and Canadian models are different and have low pressure further to the east, but give Eastern Virginia and Delmarva several inches of snow.