Winter storm Fern snarls US travel, forces mass flight cancellations

>> 3,800 flights cancelled >>> 1,000 delayed due to storm >>> American Airlines leads in flight disruptions >>> FAA warns of potential ground stops at major airports

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A person walks amid a major winter storm spreading across a large swath of the United States, in Brooklyn, New York City, on Sunday.

(REUTERS)

A powerful winter storm sweeping across much of the United States forced airlines to cancel thousands of flights and delay hundreds on Monday, as freezing rain and heavy snowfall disrupted travel and snarled transportation networks.

About 3,800 flights were cancelled and over 1,000 were delayed as of early Monday, according to flight-tracking website FlightAware, following more than 11,000 cancellations reported on Sunday.

The number of cancellations and delays was expected to rise as the day progressed.

Low pressure south of New England is expected to move east over the Atlantic on Monday, bringing heavy snow to parts of the Northeast and freezing rain across sections of the Mid-Atlantic, the US National Weather Service said.