SHIP BOTTOM, N.J. - Forget distinctions like tropical storm or hurricane. Don't get fixated on a particular track. Wherever it hits, the rare behemoth storm inexorably gathering in the eastern U.S. will afflict a third of the country with sheets of rain, high winds and heavy snow, say officials who warned millions in coastal areas to get out of the way.
"We're looking at impact of greater than 50 to 60 million people," said Louis Uccellini, head of environmental prediction for the National Oceanic and Atmospheric Administration.
As Hurricane Sandy barreled north from the Caribbean - where it left nearly five dozen dead - to meet two other powerful winter storms, experts said it didn't matter how strong the storm was when it hit land: The rare hybrid storm that follows will cause havoc over 800 miles from the East Coast to the Great Lakes.
Metropolitan Transportation Authority workers cover an entrance to the Canal Street A, C, and E station with plywood to help prevent flooding, Saturday, in New York. As Hurricane Sandy approaches the New York region, residents of some flood-prone areas have been told to evacuate and officials are preparing for a possible transit system shutdown.
"This is not a coastal threat alone," said Craig Fugate, director of the Federal Emergency Management Agency. "This is a very large area."
New Jersey Gov. Chris Christie declared a state of emergency Saturday as hundreds of coastal residents started moving inland and the state was set to close its casinos. New York's governor was considering shutting down the subways to avoid flooding and half a dozen states warned residents to prepare for several days of lost power.
Sandy weakened briefly to a tropical storm early Saturday but was soon back up to Category 1 strength, packing 75 mph winds about 355 miles southeast of Charleston, S.C., as of 8 p.m. Experts said the storm was most likely to hit the southern New Jersey coastline by late Monday or early Tuesday.
Governors from North Carolina to Connecticut declared states of emergency. Delaware ordered mandatory evacuations for coastal communities by 8 p.m. Sunday. Christie, who was widely criticized for not interrupting a family vacation in Florida while a snowstorm pummeled the state in 2010, broke off campaigning for Mitt Romney in North Carolina on Friday to return home.