Unlike the storm from earlier this week which moved into the Ohio Valley, this low pressure system will end up just off the Mid-Atlantic coastline allowing for a colder environment in the region. Snow should break out in the early morning hours across DC and Philly and by the late morning hours in and around New York City. With some expected strong lifting action in the atmosphere, the snow can come down pretty hard for a few hours beginning shortly after its arrival time and this time period may actually turn out to be the best accumulating snowfall during this event in some locations along the I-95 corridor. There is a chance the precipitation slackens off a bit for a brief time later tomorrow, but it will re-develop tomorrow night primarily as a mix of snow and sleet although some freezing rain is possible on the southeastern side of the District of Columbia.
The low pressure system will tend to stall out for awhile just off the Mid-Atlantic coastline and this will allow for a rather long duration event. A wintry mix on Thursday night may end up lasting well into the day on Friday in the I-95 corridor and it can conceivably change back to all snow with some additional accumulations possible.
Snow arrival times and accumulation estimates for the metro regions along I-95 are listed below. The higher amounts in those snowfall ranges will be on the N/W side of the given metro region and there can be isolated higher amounts.
DC: 3-7AM; 3-6 inches
Philly: 4-8AM; 4-8 inches
NYC: 10AM-1PM; 4-8 inches
Meteorologist Paul Dorian
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