159 FZNT27 KNHC 200857 OFFN06 NAVTEX Marine Forecast NWS National Hurricane Center Miami, FL 457 AM EDT Thu Sep 20 2018 ...Please refer to Coastal Waters Forecasts (CWF) available through NOAA Weather Radio and other means for detailed Coastal Waters Forecasts... .SYNOPSIS...High pressure build over the eastern United States will produce gentle to moderate E to SE breezes and small to moderate seas across the Gulf through Sun. A trough moving across the Yucatan Peninsula and SE Gulf will shift westward across the south central Gulf and Yucatan today, and across the southwest Gulf this afternoon through Fri, before dissipating Sat. High pres will extend from the middle Atlc states SW to the NW Gulf over the weekend to produce generally moderate to fresh easterly wind flow across the basin. Northwest Gulf of Mexico .TODAY...SE winds 10 to 15 kt. Seas 2 ft or less. Chance of thunderstorms. .TONIGHT...SE winds 10 to 15 kt. Seas 2 ft or less, building to 3 to 4 ft late. Chance of showers and isolated thunderstorms. .FRI...SE to S winds 10 to 15 kt. Seas 3 to 4 ft. Scattered showers and isolated thunderstorms. .FRI NIGHT...SE winds 10 to 15 kt. Seas 3 to 4 ft. Chance of thunderstorms. .SAT...SE winds 10 to 15 kt. Seas 3 ft. .SAT NIGHT...E to SE winds 5 to 10 kt. Seas 3 ft. .SUN...E to SE winds 5 to 10 kt. Seas 3 ft in the morning, subsiding to 2 ft or less. .SUN NIGHT...E to SE winds 5 to 10 kt. Seas 2 ft or less. .MON...SE to S winds 5 to 10 kt. Seas 2 ft or less. .MON NIGHT...SE to S winds 10 to 15 kt. Seas 2 ft or less. North Central and Northeast Gulf of Mexico .TODAY...E to SE winds 5 to 10 kt. Seas 2 ft or less. Slight chance of thunderstorms. .TONIGHT...SE winds 10 to 15 kt. Seas 2 ft or less. Chance of thunderstorms. .FRI...E to SE winds 5 to 10 kt. Seas 2 ft or less. Chance of thunderstorms. .FRI NIGHT...E to SE winds 5 to 10 kt. Seas 2 ft or less. Chance of thunderstorms. .SAT...E winds 5 to 10 kt. Seas 2 ft or less. .SAT NIGHT...E winds 5 to 10 kt. Seas 2 ft or less. .SUN...E to SE winds 5 to 10 kt. Seas 2 ft or less. .SUN NIGHT...E to SE winds 10 to 15 kt. Seas 2 ft or less, building to 3 ft late. .MON...SE winds 10 to 15 kt. Seas 3 ft. .MON NIGHT...SE winds 10 to 15 kt. Seas 3 ft.