Vehicles drive across Roanoke Sound leaving Hatteras Island in Nags Head, N.C., as as Hurricane Sandy churns up the east coast Saturday. Hurricane Sandy, upgraded again Saturday just hours after forecasters said it had weakened to a tropical storm, was barreling north from the Caribbean and was expected to make landfall early Tuesday near the Delaware coast, then hit two winter weather systems as it moves inland, creating a hybrid monster storm.

Store manager L.P. Cyburt, right, gets help boarding up the windows of the business Saturday as Hurricane Sandy approaches the Atlantic Coast, in Ocean City, Md.

Hannah Smith, 4, looks over a pile of sandbags in front of her home, with her dog Jamison, on Saturday along Ocean View Avenue in Norfolk, Va.

A sign on N. College Rd. in Wilmington, N.C. notifies motorists of a tropical storm watch Friday as Hurricane Sandy churns over the Atlantic Ocean.

Dennis Mouras ties down a canopy Saturday on his home near the ocean in Ship Bottom, N.J., Saturday. Hurricane Sandy continues its trek along the East Coast, and may bring record-breaking flooding.

Nick Almeter, 26, prepares for the storm Saturday , as he carries another sandbag to place by properties along Ocean View Avenue in Norfolk, Va.

Cars line up for gas at the Sam's Club, in Pleasantville, N.J., as Hurricane Sandy makes its way up the coast Friday ahead of Hurricane Sandy.

Cars line up for gas at the Sam's Club, in Pleasantville, N.J., as Hurricane Sandy makes its way up the coast Friday ahead of Hurricane Sandy.

A satellite image of Sandy is shown Saturday at the National Hurricane Center in Miami. Early Saturday, the storm was about 335 miles southeast of Charleston, S.C.

People walk the Atlantic City Boardwalk on Saturday in Atlantic City, N.J.. With Hurricane Sandy taking aim at New Jersey, Gov. Chris Christie ordered Atlantic City's 12 casinos to shut down at 4 p.m. Sunday as part of his statewide emergency declaration.

Bally's crews affix plywood on the doors and windows at Bally's Atlantic City along the boardwalk Saturday as patrons enter and exit the casino in Atlantic City, N.J.

Residents wade through a flooded street caused by heavy rains from Hurricane Sandy in Port-au-Prince, Haiti, Thursday, Oct. 25, 2012. Hurricane Sandy rumbled across mountainous eastern Cuba and headed toward the Bahamas on Thursday as a Category 2 storm, bringing heavy rains and blistering winds. (AP Photo/Dieu Nalio Chery)

Residents of the Port-au-Prince deal with the continued rainfall as they make their way through the streets of the capital city Thursday, Oct. 25, 2012. Hurricane Sandy roared across Cuba overnight, making landfall as a powerful 115-mph storm. Haiti's capital, Port-au-Prince is still feeling the ripple effects, with gusty continuing rain as the Sandy makes it way towards the Bahamas. (AP Photo/The Miami Herald, Carl Juste) MAGS OUT

A woman sits on a window sill above flood waters brought by heavy rain left behind by Hurricane Sandy in Port-au-Prince, Haiti, Thursday, Oct. 25, 2012. Hurricane Sandy rumbled across mountainous eastern Cuba and headed toward the Bahamas on Thursday as a Category 2 storm, bringing heavy rains and blistering winds. (AP Photo/Dieu Nalio Chery)

Jose Aguilera seeps his home's floor by his empty bed frame after the passing hurricane Sandy damaged his roof, causing rain to soak his mattress, in Gibara, Cuba, Thursday, Oct. 25, 2012. Hurricane Sandy blasted across eastern Cuba on Thursday as a potent Category 2 storm and headed for the Bahamas after causing at least two deaths in the Caribbean. (AP Photo/Franklin Reyes)

Residents stand on a bridge that was previously destroyed in 2008 by Tropical Storm Gustav, while watching Hope River swell in the village of Kintyre, near Kingston, Jamaica, after the passing of Hurricane Sandy, Thursday, Oct. 25, 2012. Sandy, which made landfall Wednesday afternoon near Kingston, crossed over Jamaica killing an elderly man when a boulder crashed into his clapboard house, police said. (AP Photo/Collin Reid)

Residents inspect damage after the passing of Hurricane Sandy in Gibara, Cuba, Thursday, Oct. 25, 2012. Hurricane Sandy blasted across eastern Cuba on Thursday as a potent Category 2 storm and headed for the Bahamas after causing at least two deaths in the Caribbean. (AP Photo/Franklin Reyes)

A driver maneuvers his classic American car along a wet road as a wave crashes against the Malecon in Havana, Cuba, Thursday, Oct. 25, 2012. Hurricane Sandy blasted across eastern Cuba on Thursday as a potent Category 2 storm and headed for the Bahamas after causing at least two deaths in the Caribbean. (AP Photo/Ramon Espinosa)

The sea wall and a road is partially damaged after the passing of Hurricane Sandy in Gibara, Cuba, Thursday, Oct. 25, 2012. Hurricane Sandy blasted across eastern Cuba on Thursday as a potent Category 2 storm and headed for the Bahamas after causing at least two deaths in the Caribbean. (AP Photo/Franklin Reyes)

A Fort Lauderdale Ocean Rescue truck drives past a lifeguard stand on an empty beach, Thursday, Oct. 25, 2012 in Fort Lauderdale, Fla. Hurricane Sandy was expected to churn through the central and northwest Bahamas late Thursday and early Friday. It also might bring tropical storm conditions along the southeastern Florida coast, the Upper Keys and Florida Bay by Friday morning. (AP Photo/Wilfredo Lee)

Cape Charles Police Officer Jim Pruitt tapes off the town fishing pier and beach to restrict access on Sunday in Cape Charles, Va.

High water from Hurricane Sandy surrounds a car Sunday morning along Hampton Boulevard in Norfolk, Va.

A sign at Nathan's Famous delicatessen glows against a cloudy sky near the Coney Island boardwalk Sunday in the Brooklyn borough of New York as the outer bands of Hurricane Sandy spread over the Northeast Coast. Coney Island and other New York City neighborhoods were under a mandatory evacuation order as the city braced for the arrival of the hurricane and a possible flooding storm surge.

The bar, Echos is boarded up Sunday in North Wildwood, N.J. Cape May County residents prepare for the approach of Hurricane Sandy. Tens of thousands of people were ordered to evacuate coastal areas Sunday as big cities and small towns across the U.S. Northeast braced for the onslaught of a superstorm threatening some 60 million people along the most heavily populated corridor in the nation.

Plywood covers the revolving doors Sunday in preparation for Hurricane Sandy at the 2 Broadway building of Lower Manhattan in New York. Many businesses, including the New York Stock Exchange, are planning to be closed Monday.

Ocean water rolls over state highway NC 12 in Buxton, N.C., on Hatteras Island at dawn on Sunday as Hurricane Sandy works its way north, battering the U.S. East Coast.