While the storm is fairly far away, the weather world has been predicting this one for at least the last 3 days. That's 12 model runs. 12 opportunities for the storm to change. But it didn't. Based on that ALONE, it's a good idea to mention it. Besides, who wouldn't want a snowstorm on Christmas? (Other than travelers.)
So the GFS is printing out high totals. It has been exaggerated before, but the below image will change your mind. It is an image for the Christmas time period.
And there could be more. To find the amount of snow from a color, multiply the number on the legend by 10 for your average snow amount.
Yes, I have decided that the time has come to issue a SnowMAP for tomorrow nights-Tuesday's storm. This is preliminary, and will be edited tonight. This is your Short-Range Forecaster for The Weather Centre here to give you some updates on this storm. Right now, the NAM is printing out amoutns that have been changing every run. The GFS became unstable last night, so there's not much to rely on. But at the current thinking, a general consensus is at least a couple inches for areas in the 3-6'' area. People in the 6'' area are nearly secured that spot, but a couple more model runs will assure it.