The storm is now racing north, causing as many as 3000 flights to be cancelled.
The cold also raised the risk that road salt would not work to melt ice, possibly leaving highway crews to shift over to sanding roads to improve traction, MA transportation officials said.
The National Weather Service has issued a winter-storm warning or advisory for 44 counties in central and eastern North Carolina, which is already in the grip of a bitter cold snap.
In tune, New England is likely to receive 6-12 inches of snow and conditions will not be much different in states like Maryland, Delaware, and Virginia.
The wintry weather has been blamed for at least 14 deaths in the past few days, including four in North Carolina traffic accidents and three in Texas because of the cold.
Passenger train operator Amtrak ran reduced service in the Northeast.
"In this case, with a nor'easter, the cold air from Canada combined with the warmer ocean waters of the Gulf Stream is what will trigger this explosive strengthening pattern", Dean said. CT and MA told non-essential state workers to stay home, and New Jersey shuttered state offices.
In Marshfield, also southeast of Boston, National Guard troops used a truck Thursday to take people out of homes surrounded by floodwaters.
"The pressure has dropped tremendously, 21 millibars in six hours, so it is really going to town off the Mid-Atlantic coast now", Oravec said. "It's not that cold, it'll just be snow".
"I want to emphasize to everyone these are a very, very unsafe conditions".
Snow covered the ground in Tallahassee, Florida, for the first time in almost 30 years Wednesday. Schools in Newark, New Jersey, opened two hours later than usual.
Dominion Energy reported more than 35,000 customers in southeastern Virginia without power Thursday morning.
But forecasters warned temperatures would drop sharply on Friday and into the weekend.
"Flights scheduled to resume at JFK Airport at 7 a.m. Friday, after today's suspension of operations due to exceedingly strong winds and blowing snow". It brought high winds and swift, heavy snowfall.
Meanwhile, New York City has been battered with heavy snow and gusty winds that have played havoc with commutes and shut down schools on Thursday.
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