000 FZNT26 KNHC 190337 OFFN05 NAVTEX Marine Forecast NWS National Hurricane Center Miami, FL 1137 PM EDT Sat Sep 18 2021 ...Please refer to Coastal Waters Forecasts (CWF) available through NOAA Weather Radio and other means for detailed Coastal Waters Forecasts... .SYNOPSIS...A weak Atlantic ridge north of the area will maintain mainly moderate easterly trade winds across the regional waters through late Sun. Newly formed Tropical Depression Sixteen, currently well east of the region over the tropical Atlantic, will strengthen into a tropical storm overnight then move to the northeast of the Leeward Islands through the early part of the week, before continuing northward through mid week. This will bring increased winds and seas to the Atlantic waters Mon and Tue. Winds and seas will diminish thereafter across the region. San Juan Atlantic Waters .OVERNIGHT...E winds 10 to 15 kt. Seas 4 to 5 ft. .SUN...NE to E winds 10 to 15 kt. Seas 4 to 5 ft. Scattered showers and isolated tstms. .SUN NIGHT...NE to E winds 10 to 15 kt. Seas 4 to 5 ft. Scattered showers and isolated tstms. .MON...NE winds 10 to 15 kt. Seas 6 to 9 ft in NE swell. Scattered showers and isolated tstms. .MON NIGHT...NE winds 15 to 20 kt. Seas 6 to 9 ft. .TUE...NW winds 15 to 20 kt, shifting to SW in the afternoon. Seas 7 to 10 ft in N to NE swell. .TUE NIGHT...S to SW winds 15 to 20 kt. Seas 6 to 8 ft. .WED...S to SW winds 10 to 15 kt. Seas 5 to 7 ft. .WED NIGHT...S to SW winds 5 to 10 kt. Seas 4 to 5 ft in NE to E swell. .THU...S to SW winds 5 to 10 kt. Seas 4 to 6 ft in N to NE swell. .THU NIGHT...NE winds less than 5 kt, shifting to SE to S 5 kt after midnight. Seas 5 to 6 ft in N to NE swell. San Juan Caribbean Waters .OVERNIGHT...NE to E winds 10 to 15 kt. Seas 3 to 4 ft. Scattered showers and isolated tstms. .SUN...NE to E winds 5 to 10 kt. Seas 3 to 4 ft. Scattered showers and isolated tstms. .SUN NIGHT...NE to E winds 10 to 15 kt. Seas 3 ft. Scattered showers and isolated tstms. .MON...NE winds 5 to 10 kt, shifting to SE to S in the afternoon. Seas 3 to 4 ft. Scattered showers and isolated tstms. .MON NIGHT...NE to E winds 5 to 10 kt, shifting to SE after midnight. Seas 3 to 4 ft. .TUE...SE to S winds 10 to 15 kt. Seas 3 to 4 ft. .TUE NIGHT...SE winds 10 to 15 kt. Seas 3 to 4 ft. .WED...SE winds 10 to 15 kt. Seas 3 ft. .WED NIGHT...E to SE winds 10 to 15 kt. Seas 3 ft. .THU...E to SE winds 10 to 15 kt. Seas 3 to 4 ft. .THU NIGHT...E winds 5 to 10 kt. Seas 3 to 4 ft.