I have been hesitant to put out any snow accumulation numbers in my discussions this week simply due to the fact that I had a good feeling that most mountain locations would see various other types of precip mixing in throughout the Saturday and Saturday night time periods. That will indeed be the case for most spots, and this is not a true snowstorm at all.
At this time, it looks like precip will spread in Saturday. The precip during the day will probably be pretty light and will likely be a mix of rain, freezing rain, and some sleet in North Carolina and the Virginias. Up in Maryland, any precip during the day Saturday will probably be just snow.
Saturday night, things get tricky. As a big coastal low pressure develops, the atmosphere aloft will begin to warm. Any snow will end (except possibly in Maryland), and freezing rain will probably be the main precipitation type, although some sleet will be possible from time to time. Some damaging accumulations of ice will be possible, especially in the Virginias.
Sunday, the temperatures aloft will plummet and the precip will switch to snow. This will likely occur sometime Sunday morning in most spots. The snow will probably end Sunday night in the North Carolina mountains and Monday morning in the Virginias and Maryland.
In terms of snow amounts, tough call. The favored upslope locations will do the best. Overall, a couple of inches will probably fall in the favored North Carolina locales (possibly more given perfect conditions). For the Virginias, the moisture looks the best there at this time, so heavier accumulations of snow will likely occur.
I need to point out that it will be extremely windy Sunday. I would expect some gusts of wind over 60 or 70mph at times. This could cause some big problems in areas that got a significant ice accumulation.
Good news here is that lots of cold air is on the way for the first few days of next week, so lots of snow-making temps will occur. Next week will be MUCH better for the ski industry than this week was.