5-9 inches of snow has already fallen across parts of eastern PA, northern NJ, and across the NYC Metro Area, with the highest totals reported from the Staten Island area. However, the precipitation has already begun changing over to sleet and freezing rain as an area of warm air just above the surface advects northward. The regional radar image from 16z show below as well as surface obs show the freezing line still off-shore the NYC Metro area, suggesting that ice accumulations will be a problem as the snow changes over to freezing rain.


A mesoscale discussion has been issued by the Storm Prediction Center for the likelihood of hourly ice accumulation rates approaching 0.10" per hour from eastern PA across the NYC Metro Area this afternoon. With up to 9 inches of snow already on the ground, the travel situation in this area could be ugly for the evening rush hour.