000 FZNT26 KNHC 021521 OFFN05 NAVTEX Marine Forecast NWS National Hurricance Center Miami, FL 1121 AM EDT Sat Sep 2 2017 ...Please refer to Coastal Waters Forecasts (CWF) available through NOAA Weather Radio and other means for detailed Coastal Waters Forecasts... .SYNOPSIS...Mainly gentle to moderate trades will prevail through Tue as a weak ridge remains centered across the W central Atlc. Moderate long period NNE swell will affect the area waters this afternoon through late Sun. Hurricane Irma will approach the waters of the Leeward Islands Tue night, near 17.4N 56.0W early Tue, and near 19.2N 60.6W early Wed as a major hurricane. San Juan Atlantic Waters .THIS AFTERNOON...E winds 10 to 15 kt. Seas 5 to 7 ft. Scattered showers and isolated thunderstorms. .TONIGHT...E winds 10 to 15 kt. Seas 6 to 7 ft in N swell. Scattered showers and isolated thunderstorms. .SUN...E to SE winds 10 to 15 kt. Seas 5 to 6 ft. Scattered showers and isolated thunderstorms. .SUN NIGHT...E winds 10 to 15 kt. Seas 4 to 5 ft. Scattered showers and isolated thunderstorms. .MON...E winds 5 to 10 kt. Seas 4 to 5 ft in E swell. .MON NIGHT...NE to E winds 10 to 15 kt. Seas 4 to 7 ft. .TUE...NE to E winds 10 to 15 kt. Seas 5 to 8 ft in E swell. .TUE NIGHT...HURRICANE CONDITIONS POSSIBLE. .WED...HURRICANE CONDITIONS POSSIBLE. San Juan Caribbean Waters .THIS AFTERNOON...E winds 10 to 15 kt. Seas 3 to 4 ft. Scattered showers and isolated thunderstorms. .TONIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. Scattered showers and isolated thunderstorms. .SUN...E to SE winds 10 to 15 kt. Seas 3 to 4 ft. Scattered showers and isolated thunderstorms. .SUN NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. .MON...E winds 10 to 15 kt. Seas 3 to 4 ft. .MON NIGHT...NE to E winds 5 to 10 kt. Seas 3 to 4 ft. .TUE...NE to E winds 10 to 15 kt. Seas 3 to 4 ft. .TUE NIGHT...HURRICANE CONDITIONS POSSIBLE. .WED...HURRICANE CONDITIONS POSSIBLE.