1) First will be an area of lift that pushes east out ahead of the main system late morning into the afternoon. Although the axis will be focused along the Mason Dixon Line, there will still be some light precipitation that breaks out across northern Virginia...likely in the form of sleet or snow with 850 temperatures still below freezing. This could lead to light accumulations with the better chance the farther north you go...maybe even an inch or two across the far northern Shenandoah Valley.
|12z nam: 850 mb relative humidity map showing isentropic lift axis out ahead of the main system...best area of lift circled in black|
|12z nam: Sunday 10pm surface map|