People walk across Beach Avenue in Cape May, N.J., as flood waters from Hurricane Sandy rush in on Oct. 29. See an interactive map of the storm below.

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"Frankenstorm" Sandy was not oversold: The post-tropical cyclone has knocked out power to some 5.2 million people in the Northeast, including almost all 250,000 New Yorkers below 39th Street in Manhattan; caused severe flooding in Connecticut, the Jersey Shore (especially gambling mecca Atlantic City), and New York, notably inundating the coastal areas of New York City and Long Island and all subway tunnels under New York's East River plus all but one automobile tunnel connecting Manhattan to New Jersey and Brooklyn; forced the evacuation of New York's NYU Langone hospital, which lost its backup power; and put New Jersey's Oyster Creek nuclear power plant on alert. The National Weather Service also issued a rare blizzard warning for parts of Maryland and West Virginia. At least 10 deaths have been attributed to Sandy.