391 FZNT27 KNHC 192022 OFFN06 NAVTEX Marine Forecast NWS National Hurricane Center Miami, FL 422 PM EDT Thu Jul 19 2018 ...Please refer to Coastal Waters Forecasts (CWF) available through NOAA Weather Radio and other means for detailed Coastal Waters Forecasts... .SYNOPSIS...Weak high pressure ridge across the Gulf along 25N will prevail throughout the week. Active convection is expected across the northern Gulf during the next few days. A surface trough will move off the Yucatan Peninsula into the Bay of Campeche each evening, accompanied by fresh nocturnal winds. Northwest Gulf of Mexico .TONIGHT...SW winds 10 to 15 kt. Seas 2 ft or less. .FRI...SW winds 10 to 15 kt. Seas 2 ft or less. .FRI NIGHT...S to SW winds 10 to 15 kt. Seas 2 ft or less. .SAT...SW winds 10 to 15 kt. Seas 2 ft or less. .SAT NIGHT...S to SW winds 10 to 15 kt. Seas 2 ft or less. .SUN...SW winds 10 to 15 kt. Seas 2 ft or less, building to 3 ft in the afternoon. .SUN NIGHT...SW winds 15 to 20 kt. Seas 3 ft. .MON...SW to W winds 15 to 20 kt. Seas 3 to 4 ft. .MON NIGHT...SW to W winds 15 to 20 kt. Seas 3 to 4 ft. .TUE...SW to W winds 10 to 15 kt. Seas 3 to 4 ft. .TUE NIGHT...SW to W winds 10 to 15 kt. Seas 3 to 4 ft. North Central and Northeast Gulf of Mexico .TONIGHT...W winds 10 to 15 kt. Seas 3 ft. Scattered showers and isolated thunderstorms. .FRI...W winds 10 to 15 kt. Seas 3 ft. Scattered showers and isolated thunderstorms. .FRI NIGHT...SW to W winds 10 to 15 kt. Seas 3 ft, subsiding to 2 ft or less. Scattered showers and isolated thunderstorms. .SAT...W winds 10 to 15 kt. Seas 2 ft or less. Scattered showers and isolated thunderstorms. .SAT NIGHT...SW to W winds 15 to 20 kt. Seas 2 ft or less, building to 3 to 4 ft late. .SUN...W winds 15 to 20 kt. Seas 3 to 5 ft. .SUN NIGHT...SW to W winds 15 to 20 kt. Seas 4 to 6 ft. .MON...W winds 15 to 20 kt. Seas 4 to 6 ft. .MON NIGHT...SW to W winds 10 to 15 kt. Seas 3 to 5 ft. .TUE...SW winds 10 to 15 kt. Seas 3 to 4 ft. .TUE NIGHT...SW winds 10 to 15 kt. Seas 3 to 4 ft.