Includes extreme significant wave heights, in meters, computed using peaks over threshold method on NOAA 30-year WWIII hindcast data. Extreme values for 5, 10, 25, 50, and 100 year return periods were computed. Sites cover US coastlines. Column 1: Site identifier/name Column 2: Site latitude Column 3: Site longitude Column 4: 5-year extreme Hs, in meters Column 5: 10-year extreme Hs, in meters Column 6: 25-year extreme Hs, in meters Column 7: 50-year extreme Hs, in meters Column 8: 100-year extreme Hs, in meters