A band of frigid weather was making its way up the U.S. East Coast on Sunday, promising blizzards and a foot (30 centimeters) of snow to New York City and the New England states, while several states to the South made emergency declarations as the storm caused crashes on slick roads, according to AP. Airlines grounded hundreds of flights Sunday along the Northeast corridor in anticipation of the storm, affecting major airports including the New York-area's John F. Kennedy and Newark. Airlines said more cancellations were likely as the storm progressed. In Washington, D.C., transportation officials pretreated roads and readied 200 salt trucks, plows and other pieces of equipment to fight the 6 inches (15 centimeters) or more expected to fall in the Mid-Atlantic region. The Northeast is expected to get the brunt of the storm. Forecasters issued a blizzard warning for New York City for Sunday and Monday, with a forecast of 11 to 16 inches (28 to 41 centimeters) of snow and strong winds that will reduce visibility to near zero at times. A blizzard warning was also in effect for Rhode Island and most of eastern Massachusetts including Boston, with forecasters predicting 15 to 20 inches (38 to 51 centimeters) of snow. A blizzard warning is issued when snow is accompanied by sustained winds or gusts over 35 mph (56 kph). As much as 18 inches (46 centimeters) could fall on the New Jersey shore with wind gusts over 40 mph (64 kph). Philadelphia Mayor Michael Nutter declared a snow emergency as of 2 p.m. Sunday, and he urged residents to stay off the roads. By early Sunday, Maryland, Virginia and North Carolina declared states of emergency. Amtrak canceled several of its passenger trains in Virginia. «Winds with gusts up to 45 miles per hour (72 kph) will cause blowing snow and that's going to cause the worst of it,» Virginia Gov. Bob McDonnell told The Weather Channel Saturday night. «We're urging extreme caution in travel. Try to get home early and if you don't have to travel don't go.» Major airlines were canceling flights in the storm's path Sunday. Continental Airlines canceled 250 departures from Newark Liberty International Airport outside New York City. United Airlines canceled dozens of Sunday departures from Newark, Philadelphia, New York's LaGuardia and JFK, Boston and other airports. AirTran and Southwest Airlines also canceled flights, mostly in or out of Washington Dulles, Baltimore and Newark. Delta Air Lines spokesman Kent Landers said the airline proactively canceled about 850 mainline and regional flights systemwide Sunday. «Most cancelations are concentrated from the Carolinas through New York,» he said. Mary Sanderson at American Airlines said flights through Washington, Baltimore and Philadelphia would likely be canceled after 2 or 3 p.m. Sunday, with late starts expected Monday morning. More than 800 flights had been canceled as of Sunday morning at New York's LaGuardia and John F. Kennedy International Airport and at Newark Liberty International Airport, the Port Authority of New York and New Jersey said. Most carriers were waiving fees for one-time changes in affected areas and urging passengers to make changes through their websites. The monster storm is the result of a low pressure system off the North Carolina coast that will strengthen into a major storm as it moves northeast, according to the National Weather Service. Early Sunday, winter storm warnings stretched from Georgia through the northeastern New England states. The North Carolina Highway Patrol said late Saturday that most of the roads in and around Asheville were either covered or partially covered with snow and ice. Emergency management spokeswoman Julia Jarema said troopers in the two dozen westernmost counties answered 350 calls in 18 hours Saturday. Most were wrecks. «We're busy,» Ryan Dean of Dean's Wrecker Service in Raleigh, North Carolina, said Sunday. «We've been out since 3 in the morning pulling people out of the ditch.» ___ Contributing to this report were Associated Press writers Kristin M. Hall in Nashville; Page Ivey in Columbia; Karen Hawkins in Chicago; Warren Levinson and Verena Dobnik in New York City; David Goodman in Detroit; Eileen Sullivan and Samantha Bomkamp in Washington; Michelle Price in Phoenix; Dylan Lovan in Louisville; Leonard Pallats and Greg Bluestein in Atlanta; and Mark Pratt in Boston. 261613 dec 10GMT