Areas that are expected to be in a 100-year flood zone in the 2020s and 2050s as sea levels rise from global warming, according to new projections by the NYPCC

The city's climate adaptation projects should be devised to handle conditions far worse than even the most severe sea level rise estimates, scientists say.

insideclimatenews.org - by Katherine Bagley and Maria Gallucci- June 20, 2013

Mayor Michael Bloomberg's plan to protect New York City from future superstorm Sandys and other climate-related threats is the most ambitious and scientifically accurate plan of its kind in the world. But as global warming intensifies and sea levels rise, even this strategy may not be enough to flood-proof the city for very long, experts say.

The new map could put twice as many homes in the flood zone and raise premiums for many homeowners.

propublica.org - by Al Shaw - June 12, 2013

. . . while Sandy’s water has long receded and the bulldozers have left, a residual effect for homeowners along the city’s coastline still lurks quietly beneath the surface. It comes in the form of a July 2012 law called the Biggert-Waters Act, which will end subsidized rates for property owners who are remapped into more severe flood zones, increasing their flood insurance premiums 20 percent a year until they reach market rates, and will apply those higher rates for newly purchased property.

The potential increases, which proponents say are necessary to sustain the National Flood Insurance Program, are not widely understood by residents, and may be catching them unprepared.

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Biggert-Waters Act - Flood Insurance Reform Act of 2012