000 FZNT27 KNHC 211457 OFFN06 NAVTEX Marine Forecast NWS National Hurricane Center Miami, FL 1057 AM EDT Fri Jul 21 2017 ...Please refer to Coastal Waters Forecasts (CWF) available through NOAA Weather Radio and other means for detailed Coastal Waters Forecasts... .SYNOPSIS...Weak high pressure will prevail across the E and NE Gulf through early next week. A surface trough will develop over the Yucatan each afternoon and evening, then move W into the SW Gulf and dissipate each night. Northwest Gulf of Mexico .THIS AFTERNOON...W to NW winds less than 5 kt, shifting to E to SE in the afternoon. Seas 2 ft or less. Scattered showers and isolated thunderstorms. .TONIGHT...S winds 5 to 10 kt. Seas 2 ft or less. Chance of thunderstorms. .SAT...S to SW winds 10 to 15 kt. Seas 2 ft or less. Scattered showers and isolated thunderstorms. .SAT NIGHT...S winds 10 to 15 kt. Seas 2 ft or less, building to 3 to 4 ft late. Scattered showers and isolated thunderstorms. .SUN...S to SW winds 10 to 15 kt. Seas 3 to 4 ft. .SUN NIGHT...S winds 10 to 15 kt. Seas 3 to 5 ft. .MON...S winds 10 to 15 kt. Seas 3 to 5 ft. .MON NIGHT...SE to S winds 10 to 15 kt. Seas 3 to 5 ft. .TUE...SE to S winds 10 to 15 kt. Seas 3 to 5 ft. .TUE NIGHT...SE winds 10 to 15 kt. Seas 3 ft. North Central and Northeast Gulf of Mexico .THIS AFTERNOON...W to NW winds less than 5 kt, shifting to SE to S in the afternoon. Seas 2 ft or less. Scattered showers and isolated thunderstorms. .TONIGHT...S to SW winds 5 to 10 kt. Seas 2 ft or less. Slight chance of thunderstorms. .SAT...S to SW winds 5 to 10 kt. Seas 2 ft or less. Scattered showers and chance of thunderstorms. .SAT NIGHT...SW winds 5 to 10 kt. Seas 2 ft or less. Scattered showers and isolated thunderstorms. .SUN...SW to W winds 5 to 10 kt. Seas 2 ft or less. .SUN NIGHT...SW to W winds 5 to 10 kt. Seas 2 ft or less. .MON...SW to W winds 5 to 10 kt. Seas 2 ft or less. .MON NIGHT...SW to W winds 10 to 15 kt. Seas 2 ft or less. .TUE...W winds 10 to 15 kt. Seas 2 ft or less. .TUE NIGHT...W winds 5 to 10 kt. Seas 2 ft or less.