The frequency of fair-weather flooding, where unusually high tides bring ocean water into streets and neighborhoods, is projected to reach an average of five days in the U.S. Southeast, a 190 percent increase over the year 2000, according to an annual report on high-tide flooding released Wednesday by the National Oceanic and Atmospheric Administration. For the eastern Gulf of Mexico, there are expected to be three days of fair-weather flooding, a 100 percent increase.