398 FZNT25 KNHC 200240 OFFN04 NAVTEX Marine Forecast NWS National Hurricane Center Miami, FL 1040 PM EDT Wed Sep 19 2018 ...Please refer to Coastal Waters Forecasts (CWF) available through NOAA Weather Radio and other means for detailed Coastal Waters Forecasts... Southeast Gulf of Mexico .SYNOPSIS...High pressure will build over the eastern United States through tonight, producing gentle to moderate E to SE breezes and small to moderate seas across the Gulf through Sun. A trough exiting the northwest Caribbean and moving into the Yucatan Peninsula will shift westward across the south central Gulf and Yucatan overnight, and across the southwest Gulf Thu and Fri, before dissipating Sat. .OVERNIGHT...SE winds 5 to 10 kt. Seas 2 ft or less. Scattered showers and isolated thunderstorms. .THU...E winds 5 to 10 kt. Seas 2 ft or less. Scattered showers and isolated thunderstorms. .THU NIGHT...E winds 5 to 10 kt. Seas 2 ft or less. Scattered showers and isolated thunderstorms. .FRI...NE to E winds 5 to 10 kt. Seas 2 ft or less. Scattered showers and isolated thunderstorms. .FRI NIGHT...E winds 10 to 15 kt. Seas 2 ft or less. .SAT...E winds 10 to 15 kt. Seas 2 ft or less. .SAT NIGHT...E winds 10 kt. Seas 2 ft or less. .SUN...E to SE winds 10 to 15 kt. Seas 2 ft or less. .SUN NIGHT...E to SE winds 5 to 10 kt. Seas 2 ft or less. .MON...E to SE winds 5 to 10 kt. Seas 2 ft or less. .MON NIGHT...E to SE winds 10 to 15 kt. Seas 2 ft or less. Within 200 nm east of the coast of Florida .SYNOPSIS...A surface trough reaching from roughly Bermuda to 27N74W will shift NW and dissipate tonight as the central Atlantic ridge builds into the southern Bahamas. Low pressure moving off the Carolinas tonight will drag a weakening frontal boundary across the waters north of 27N Thu and Fri. The low will sink to near 31N67W Fri evening then drift W and slowly weaken Sat and Sun. NE swell will move into the open waters east of the Bahamas Fri through early next week. .OVERNIGHT...SE winds 5 to 10 kt S of 27N, and SW 5 to 10 kt N of 27N. Seas 2 ft or less. Scattered showers and isolated thunderstorms. .THU...S of 27N,SE winds 5 to 10 kt, shifting to NE in the late morning and afternoon. N of 27N,N to NE winds 10 to 15 kt. Seas 2 ft or less. Scattered showers and isolated thunderstorms. .THU NIGHT...E winds 5 to 10 kt S of 27N, and E 10 to 15 kt N of 27N. Seas 3 ft. Scattered showers and isolated thunderstorms. .FRI...NE to E winds 5 to 10 kt S of 27N, and NE to E 10 to 15 kt N of 27N. Seas 3 to 4 ft. Scattered showers and chance of thunderstorms. .FRI NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. .SAT...NE to E winds 5 to 10 kt. Seas 3 to 4 ft. .SAT NIGHT...E winds 5 to 10 kt. Seas 3 to 5 ft. .SUN...E winds 5 to 10 kt. Seas 3 to 5 ft. .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 10 to 15 kt. Seas 3 to 4 ft.