remember that clipper storm more then a decade ago that dove all the way to south carolina then rapidly intensified to a blizzard and produced close to 40 inches on eastern long island nyc only got about 10 inches we need that kind of clipper..
accuweather was wrong for days they predicted 4 to 8 for the city and said if the sleet is delayed we could get a foot for the city.. the sleet was not delayed any nyc reached over a foot..
many years ago in nyc like 15 at least we had a 12 hour sleet storm in nyc temps in low 20's and nothing but sleet covered the sidewalks and streets and everything was covered in ice and very slippery..
you do not want any significant sleet on top of a snow pack and cold temps that will take longer for the snow to eventually melt.in the cold that follows.