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U.S. Sea Levels to Rise at a Faster Pace Than in Past 100 Years

One-foot rise by 2050 threatens coastal cities including Miami, New York.

A flooded street in Miami Beach in September 2015, brought on by seasonal high tides and what many see as rising sea levels driven by climate change.

A flooded street in Miami Beach in September 2015, brought on by seasonal high tides and what many see as rising sea levels driven by climate change.

Photographer: Joe Raedle/Getty Images North America

Oceans along the U.S. coastline will rise faster within the next three decades than they did in the past 100 years, bringing more flooding to coastal cities such as New York and Miami, according to the latest projections.

Sea levels are expected to rise as much as 12 inches (30 centimeters) by 2050, according to a report led by the National Oceanic and Atmospheric Administration. While the amounts vary according to region, the inundation will lead to more coastal flooding and make tidal and storm surge more severe, the multi-agency report said.