Cold and generally dry conditions are expected to end the week for the northern Mid Atlantic, but a major winter storm is brewing for the Northern Mid Atlantic that will have the capability to produce significant snowfall throughout the region Sunday evening on through Tuesday.
High pressure will be in control today on through Saturday with scattered cloud cover expected. A few flurries will be possible throughout the period, however no snowfall accumulation is expected. Winds will be from the northwest at 10 to 20 mph with gusts over 35 mph. Temperatures today will rise into the upper 20's to lower 30's for afternoon highs. Temperatures on Friday will range from the single digits to lower 10's for lows and upper 10's to lower 20's for highs. Temperatures on Saturday will range from the lower to mid 10's for lows and mid to upper 30's for highs.
An Arctic cold front will drop south through the region on Sunday with periods of snow showers developing in the afternoon. Temperatures will fall through the day with an early high in the mid to upper 30's falling through the lower to mid 30's by the afternoon hours on Sunday.
An area of low pressure will develop along the stalling Arctic cold front boundary producing periods of moderate to heavy snowfall, sleet and freezing rain, and rain Sunday night on through Tuesday afternoon. This long duration event will lead to significant snowfall totals, significant icing, and heavy rainfall leading to flash flooding. The exact track of this low pressure system and the location of the snow, ice, and rain lines are still uncertain. Temperatures through the period will range from the upper 10's to lower 20's for lows and mid 20's to mid 30's for highs.