Winter Weather Watch 2014-2015: Northeast Storm, More Sierra Snow

Computer model guidance continues to show uncertainties for the winter weather system that could produce a significant snow from the eastern Great Lakes through Interior New England Tuesday into Thursday. Cold air (to keep precipitation all snow) is at a premium with this storm, more like an early November or late March scenario. Cold air is normally not much of a problem in December!
East Coast cities will see rain. Interior cities in the Northeast at lower elevations (PA/NY/western New England) will see snow mixing with or changing to rain at times Tuesday to Wednesday. Rain/mix turn back to all snow by late Wednesday and continuing Wednesday night into Thursday but a big question is how much snow can fall after this occurs? This is a tricky situation with marginal cold air, some dynamics, exact track, slow movement. So, it won't be snowing continuously and heavier precipitation could come in intermittent "spurts". For cities in the interior Northeast snow will fall with temps in the low to mid 30s and could mix with rain at times (especially Tuesday) so getting around shouldn't be too difficult.
 The impacts from this system will occur in the early Tuesday through Thursday time frame.
 http://www.weather.com/storms/winter/news/winter-weather-watch-2014-2015-20140930