Following late day rains, as the air cools on the back edge of the frontal boundary drapped over the East Coast, some moderate snow is breaking out as expectected this evening with one band stretched out from eastern Tennessee and the Carolinas up into West Virginia, the other around the Washington-Baltimore area with heavier bands now extending from northern Maryland up through eastern PA into New York state. This snow band will eventually spread into the Big Cities overnight tonight with 1-2″ accumulating by Sat morning from Baltimore up through Philadelphia and New York while Boston sees the snow Sat night.

Here’s the latest radar off weather.com

During Saturday, the developing offshore low will not only add moisture to the Eastern Seaboard but it will pull in the cold air out of the Midwest, this will allow an appreciable 1-2, 2-4 inch snow from the Carolinas up through Virginia, Maryland, Del, New Jersey and eventually New England.

Like we saw with Nemo, the system will be intensifying as it passes Cape Cod and so moisture will increase, allowing for a potentially 3-6, locally 12″ snowstorm for Rhode Island, eastern Mass up into southern New Hampshire and Maine, lesser amounts further inland.

Here’s the latest GFS snow charts for the next 24-48 hours.

Next 24 hrs

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48 hours

We’re now expecting strong winds to go along with the heavy snows from Providence up through Boston into southern Maine as the system cranks offshore. Some models have this storm bombing out to the south of Nova Scotia late Saturday into Sunday with a blizzard likely for Atlantic Canada.

Here’s is latest GFS pressure chart by at 51 hours which shows the system down into the 965-968mb range. This will bring quite the blizzard to Nova Scotia, New Brunswick, PEI as well as Newfoundland during Sunday/Sunday night.

Bitter Cold Follows

As for temperatures. Expect the coldest night of winter Saturday night into Sunday across the South and South Atlantic states. Frigid air will flow over freshly layed snow over the Carolinas and Virginia and I wouldn’t be surprised to see lows drop below zero all the way to the Tennessee, possibly North Georgia mountains. Widespread upper teens/low 20s across the Carolinas, upper teens perhaps all the way down to Atlanta and interior North Florida, low 20s may get all the way to Savannah, Charleston, Virginia Beach. Orlando may get near to freezing with this arctic shot. Low teens for the Big Cities from DC up to New York, Boston’s coldest will come Sunday night into Monday.

Latest ECMWF upper chart/850s

Here’s the latest GFS forecasted low temperatures.

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