Models have been trending toward the idea of a noreaster effect the Middle Atlantic and Northeast for late Sunday and lasting into Tuesday. This is probably going to be the strongest storm we have seen here since the Blizzard from almost a year ago to the day. The difference this time is that there is no real cold air except in areas to the north. Models attempt to bleed some cold air southward at low levels but at the moment it is not enough to make a real difference unless you are well north of Route 84 in New York State and in New England.
This is an impressive set up for the East Coast. A large blocking high is sitting to the north in Eastern Canada which forces the jet stream to lie south of its average position. This creates low pressure in the Southern states that moves east and then east northeast. The energy aloft with the southern system is substantial and will generate some very heavy rains up and down the East Coast that will make a serious dent in the drought...READ MORE AT http://www.meteorologistjoecioffi.com/index.php/2017/01/18/storm-threat-looms-sunday-tuesday/