A weak disturbance in the mid levels of the atmosphere is approaching the area this afternoon and evening, and touching off light to moderate precipitation across the Mid-Atlantic states. The weak surface low will continue to move north and east, to a position off the coast of Long Island tonight. Light snow will overspread the region between 7 and 9 pm, likely beginning as snow (albeit briefly) in most areas. Most locations near the coast and city should see a transition to rain, while areas farther inland could see a prolonged period of snow or sleet. Regardless, flakes will be flying in the NYC area this Christmas Eve, and will continue into the early morning hours of Christmas Morning.
Total snowfall accumulations are expected to be light, with the greatest amounts of an inch or so across the interior areas of Northwest New Jersey, Southeast New York, and non-coastal Connecticut. A trace or dusting is possible in the city and along the coast, but generally no accumulations are expected there. Clearing is expected by later Christmas morning, and the sun may even briefly return before high clouds start to build in, in advance of the next system.
More on that system tomorrow — have a wonderful and blessed Christmas Eve!