938 FZNT26 KNHC 130901 OFFN05 NAVTEX Marine Forecast NWS National Hurricane Center Miami, FL 501 AM EDT Thu Sep 13 2018 ...Please refer to Coastal Waters Forecasts (CWF) available through NOAA Weather Radio and other means for detailed Coastal Waters Forecasts... .SYNOPSIS...Tropical Storm Isaac 1006 mb is centered near 15.4N 59.7W at 5 AM EDT, moving W at 15 kt. Maximum sustained winds are 40 kt with gusts to 50 kt. Isaac will move across the Lesser Antilles today, and is expected to gradually weaken as it moves further west across the Caribbean Sea through Sun night. High winds and rough seas will be primarily north of the center. San Juan Atlantic Waters .TODAY...E winds 15 to 20 kt. Seas 5 to 10 ft. .TONIGHT...E winds 15 to 20 kt. Seas 7 to 11 ft. .FRI...E winds 15 to 20 kt. Seas 8 to 10 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 7 to 9 ft. Scattered showers. .SAT...E to SE winds 10 to 15 kt. Seas 6 to 8 ft. .SAT NIGHT...SE winds 10 to 15 kt. Seas 6 to 7 ft. .SUN...SE to S winds 10 to 15 kt. Seas 5 to 6 ft. .SUN NIGHT...SE winds 15 to 20 kt. Seas 5 ft. .MON...E to SE winds 15 to 20 kt. Seas 4 to 5 ft. San Juan Caribbean Waters ...TROPICAL STORM WARNING... .TODAY...TROPICAL STORM CONDITIONS POSSIBLE. NE winds 20 to 25 kt. Seas 4 to 7 ft. Scattered showers. .TONIGHT...TROPICAL STORM CONDITIONS EXPECTED. NE winds 30 to 35 kt. Seas 4 to 12 ft. Scattered showers. .FRI...TROPICAL STORM CONDITIONS EXPECTED. E winds 30 to 35 kt. Seas 6 to 13 ft. Scattered showers and isolated thunderstorms. .FRI NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. E to SE winds 30 to 35 kt, diminishing to 20 to 25 kt late. Seas 5 to 12 ft. Scattered showers. .SAT...E to SE winds 15 to 20 kt. Seas 4 to 9 ft. .SAT NIGHT...SE winds 15 to 20 kt. Seas 4 to 6 ft. .SUN...SE winds 15 to 20 kt. Seas 4 to 6 ft. .SUN NIGHT...E to SE winds 10 to 15 kt. Seas 4 to 5 ft. .MON...E winds 15 to 20 kt. Seas 4 to 5 ft.