Its late and I'm tired. I have been watching the models and their trends all day today and its looking good for a major east coast storm. Historic? Possibly, but this storm will be by no means a crippling snowstorm for a wide area.
Let me break down the snowfall map. The green area in southern Virginia is a plain rainstorm. Further north, the red area is the area of great concern for a fairly significant icestorm. Ice accumulations of 1/4" to 1/2" are possible here, but it would most likely be a sleet scenario. We now get into the pink area. This is the outlying area of snow around the heavier bands inland. Snowfall in this color will be light to moderate. I would expect a 3-6" snowfall in the southern areas of this color. In the north, northern New England, 2-4" is what I am thinking right now. This snow here would be a very fluffy type snow.
Now we start to get into the meat and potatoes. The dark pink/purple area is where moderate to heavy snowfall accumulations are probable. This area includes just north of DC, Baltimore, Philadelphia, New York City, Boston, and Portland, ME. Accumulations here look to be on the order of 6-12". Fluffiest snow with ratios of up to 20:1 will be away from the coast.
The next darker purple inside the other one is where a band of even heavier snow is likely. This is the jackpot area that will likely see the heaviest snow in this entire bonanza. A list of cities include York, PA, Allentown, PA, Hartford, Springfield, Worcester and Portsmouth, NH. A new are of this snow may occur in Downeast Maine. Accumulations here will range from 12-18" with isolated areas receiving up to 2 feet, especially in the white zone near York, PA.
Next Update tomorrow night.