U.S. Coastal Flooding Breaks Records As Sea Level Rises, NOAA Report Shows

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Above Photo: In Miami Beach, high tides are creating street flooding problems more often as sea level rises. The U.S. Southeast is seeing the fastest acceleration in high-tide flooding days. Credit: Joe Raedle/Getty Images

The frequency of high-tide flooding has doubled in 30 years. Some cities faced more than 20 days of it in the past year, and not just during hurricanes.