A storm could bring blizzard conditions to New York and large parts of the U.S. Northeast while dropping more than 1 foot (30 cm) of snow across New Jersey and Long Island and as much as 2 feet through eastern New England, including Boston, threatening travel delays, school cancellations and blackouts.

Snow and rain will begin Sunday night in Mid-Atlantic states, where Baltimore and Washington may get as much as 6 inches, according to the National Weather Service. The storm will then strengthen rapidly and bring its heaviest amounts from New York into New England.

"The system will deepen rapidly Monday through Tuesday," said Brian Hurley, a meteorologist with the U.S. Weather Prediction Center in College Park, Maryland. "There are some blizzard watches on Long Island and eastern Massachusetts; that is because not only is heavy snow forecast but the wind is going to pick up."