The maps below provide the visuals of how tough this call is. Also, a very small change here or there may cause a significant change in the forecast.
So the conclusion is this:
1) Storm emerges off the VA Capes, and becomes a slow moving Nor'easter as it moves N-NE then NE by Tuesday afternoon.
2) Heavy rain will develop Monday morning and then mix/change to sleet as atmosphere cools. The heavy precipitation is key to cooling the atmosphere. If it does not become heavy then it will stay rain. If it stays heavy for longer than I think, it will change to sleet/wet snow.
3) Rain/Sleet may mix/change for wet snow at times overnight. This is highly dependent on steadiness of precipitation. If too light and spotty it will not change to snow.
4) Rain/wet snow ends Tuesday morning.
5) Strong gusty winds. Damaging along the coasts, not so much here, but with wet ground a power outage may be possible even here.
6) Heavy rain could cause some minor poor drainage flooding on Monday before any changeover.
7) Temperatures fall Monday from the mid 40s to the mid 30 by evening.
This is a big storm. Lots of wind. Lots of precipitation. Take it easy.