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Thousands of Flights Grounded Ahead of Northeast Blizzard

iStockphoto/Thinkstock(NEW YORK) -- The 2013 winter storm expected to pound areas of the Northeast with as much as two feet of snow this weekend is snarling travel in the Northeast.

As of early Friday evening, 4,740 U.S. flights had been cancelled through Saturday, according to flight tracking service FlightAware. There are about 30,000 commercial flights per day nationwide.

That number may increase Saturday and into Sunday as the extent of the clean up is not yet known.

Operations have all but ceased at the three New York-area airports. The same is true for the New England airports, including Boston Logan. Flights may resume at the New York and New England airports by 3 p.m. Saturday.

Leading the way in cancellations is Newark airport, with 695 flight cancellations so far. United Airlines leads the way in cancellations by airline, with 475 flights scrapped for the storm.

Amtrak has announced it will suspend rail service in the Northeast as of Friday afternoon. Southbound service out of Boston will end at about 2 p.m. Northbound service from New York City will end at 1 p.m.

Greyhound has delayed and cancelled routes from as far south as New York City to as far north as Montreal, Canada. Popular discount bus company Bolt Bus has cancelled operations on Friday between Boston and New York and Boston and Philadelphia. Megabus has also cancelled many Northeast routes.

Copyright 2013 ABC News Radio

ABC News Radio