The future-cast radar image above from the latest High-Resolution-Rapid-Refresh (HRRR) model depicts snow (blue) holding on strong across the PA-MD state border and sinking a bit south over the interstate 70 corridor this evening where additional snowfall accumulations of 1 to 4″ are possible.
Additional Snowfall Accumulations through 2am Tuesday:
More Freezing Rain will fall this evening through Tuesday Morning
The image below shows the latest future-cast radar simulation from the North American Model (NAM) from 3am through 9pm Tuesday.
Freezing Rain will likely impact northern Maryland, parts of Northern Virginia (Loudoun county), the panhandle of West Virginia and the Shenandoah Valley. Most of these locations should change to rain between 7am and Noon as temperatures creep above freezing.
Potential Freezing Rain Accumulations through Noon Tuesday
The sheltered valleys may pick up between a trace and a quarter-inch of ice (those of you in northern Maryland, the WV panhandle and the Shenandoah Valley).
A cold front will finally clear the area Tuesday evening accompanied by a line of heavy showers; winds will increase Tuesday night through Wednesday behind the departing cold front.