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Mel Evans, Associated Press
Rough surf of the Atlantic Ocean breaks over the beach and across Beach Ave., Monday morning, Oct. 29, 2012, in Cape May, N.J., as high tide and Hurricane Sandy begin to arrive. Hurricane Sandy continued on its path Monday, forcing the shutdown of mass transit, schools and financial markets, sending coastal residents fleeing, and threatening a dangerous mix of high winds and soaking rain.

ATLANTIC CITY, N.J. — Gov. Chris Christie says anyone left on New Jersey's barrier islands should get off if they can before conditions get even worse.

Christie says "this is not a time to be a show-off, this is not a time to be stupid."

The governor says people should get off the islands when the tides recede Monday afternoon. If they are unable to, he says they should shelter on the highest levels of their homes.

Hurricane Sandy is expected to make landfall in southern New Jersey late Monday.

Several communities are already badly flooded from the storm surge.