This report from the AP Wire:

NEW YORK (AP) — Airlines canceled 300 flights Sunday as a hard-blowing nor’easter gathered strength along the East Coast and threatened to deliver some of the worst flooding to coastal Long Island in 14 years.
The cancellations at the New York area’s three major airports affected most carriers, said Steve Coleman, a spokesman for the Port Authority of New York and New Jersey. More cancellations were expected throughout the day.
Forecasters expected sustained wind of 40 mph and a storm surge of 3 to 5 feet, a combination that could cause as much coastal damage as a winter storm that wreaked havoc on the island in late 1992, Gov. Eliot Spitzer said.
Heavy rain and thunderstorms extended from Florida up the coast to southern New England on Sunday morning.
Spitzer said some low-lying areas of Long Island may need to be evacuated, and he deployed 3,200 members of the National Guard to potential flood areas.
The weather system was forecast to strengthen along the East Coast and form a nor’easter, a storm that follows the coast northward with northeasterly wind driving waves and heavy rain.
The National Weather Service posted storm warnings and watches all along the East Coast, with tornado warnings in South Carolina and flood warnings extending from Virginia north to the New York area. Winter storm warnings were in effect for parts of New England.
Two to 4 inches of rain was forecast for the New York City region with wind gusting to 50 mph. Snow and sleet were possible inland, the weather service said.