Wednesday, Jan. 17 is expected to be "very cold" with temps struggling to reach the freezing mark southeast of Washington DC in the afternoon, the NWS said.
Thursday, Jan. 18 will be another dry day but with increasing clouds, and not quite as cold. A cold front will come in on Thursday night into Friday, bringing an "opportunity for more accumulating snowfall later Thursday night and into the early half of the day on Friday," the weather service said.
"Most of the snow accumulation will take place Friday during the morning with only the higher elevations seeing any accumulation... All areas have an opportunity to see snow accumulation."
The newly-released projection map shows 1 to 2 inches in Hagerstown, Baltimore, Warrenton, VA, and Cumberland, while 2 to 3 inches could fall in Westminster, Elkton, Bel Air, Leesburg, VA, and Frederick, MD.
Fredericksburg, VA, La Plata, MD, and Annapolis, MD may only see about an inch.
"Southern Maryland and perhaps north toward the Annapolis and Chesapeake Bay Bridge could encounter a little rainfall mixing with snowfall as a slightly warmer wedge of air tries to push in from the southeast Friday morning and midday," the NWS said.
Temps will be on the lower side compared to the storm earlier in the week, forecasters said.
"Highs Friday look to remain below average with temperatures in the upper 20s and low 30s," the NWS said.
"Behind the strong front and wave of low pressure comes another blast of Arctic air Friday night. Lows Friday night will fall back into the single digits and teens with gusty northwesterly winds pushing wind chills into the single digits."
This is a developing news story. Check back for details.
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