779 FZNT32 KNHC 180746 OFFN21 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 246 AM EST Sat Nov 18 2023 Marine Weather HF Voice Broadcast for the Gulf of Mexico Seas given as significant wave height, which is the average height of the highest 1/3 of the waves. Individual waves may be more than twice the significant wave height. Synopsis for the Gulf of Mexico .SYNOPSIS...Weak low pressure has moved SE of the area into the NW Caribbean. An attached surface trough extends NE through the far SW basin, from the western tip of Cuba to the Florida Keys. This trough will drift S and dissipate today. High pressure will build across the area this weekend, producing gentle to moderate N winds today, then E and SE winds Sun. Southerly return flow will increase over the western Gulf Sun night ahead of the next cold front which will move off the Texas coast Mon night into Tue. Gale conditions are likely in the wake of the front over the west- central and SW parts of the Gulf Tue through Wed with seas forecast to build to 14 to 16 ft. Gulf of Mexico N of 26N W of 87W .TODAY...N winds 10 to 15 kt. Seas 3 to 4 ft. .TONIGHT...NE winds 10 kt. Seas 3 to 4 ft. .SUN...SE winds less than 10 kt. Seas 3 ft in the morning, subsiding to 2 ft or less. .SUN NIGHT...S winds 10 to 15 kt. Seas 2 ft or less. .MON...S winds 10 to 15 kt. Seas 3 to 5 ft. .MON NIGHT...S winds 10 to 20 kt. Seas 3 to 5 ft. .TUE...W winds 10 to 20 kt. Seas 5 to 7 ft. .TUE NIGHT...NW winds 15 to 25 kt. Seas 6 to 9 ft. .WED...N winds 10 to 20 kt. Seas 6 to 8 ft. .WED NIGHT...N winds 10 to 15 kt. Seas 4 to 6 ft. Gulf of Mexico from 22N to 26N W of 87W ...GALE CONDITIONS POSSIBLE TUE... .TODAY...N winds less than 10 kt. Seas 3 to 5 ft. .TONIGHT...NE winds less than 10 kt. Seas 3 to 4 ft. .SUN...Variable winds less than 10 kt, becoming SE less than 10 kt in the afternoon. Seas 3 ft. .SUN NIGHT...SE winds 10 to 15 kt. Seas 3 to 4 ft. .MON...SE winds 10 to 15 kt. Seas 3 to 5 ft. .MON NIGHT...SE winds 10 to 20 kt. Seas 3 to 5 ft. .TUE...SE winds 10 to 15 kt, shifting to W 20 to 30 kt in the afternoon. Seas 4 to 6 ft. .TUE NIGHT...N winds 20 to 30 kt. Seas 6 to 9 ft. .WED...N winds 15 to 25 kt. Seas 6 to 9 ft. .WED NIGHT...N winds 10 to 20 kt. Seas 6 to 9 ft. SW Gulf of Mexico S of 22N W of 87W ...GALE CONDITIONS POSSIBLE TUE NIGHT INTO WED... .TODAY...NW winds less than 10 kt. Seas 3 to 4 ft. .TONIGHT...N winds less than 10 kt in the evening, becoming variable winds less than 10 kt. Seas 2 ft or less. .SUN...Variable winds less than 10 kt, becoming S less than 10 kt in the afternoon. Seas 2 ft or less. .SUN NIGHT...SE winds 10 to 15 kt. Seas 2 ft or less, building to 3 to 4 ft after midnight. .MON...SE winds 10 to 15 kt. Seas 3 to 4 ft. .MON NIGHT...SE winds 10 to 15 kt. Seas 3 to 4 ft. .TUE...E winds 10 to 15 kt. Seas 3 to 4 ft. .TUE NIGHT...N winds 25 to 35 kt. Seas 4 to 6 ft, building to 6 to 9 ft after midnight. .WED...N winds 25 to 35 kt. Seas 7 to 10 ft. .WED NIGHT...N winds 15 to 25 kt. Seas 7 to 10 ft. Gulf of Mexico E of 87W .TODAY...N winds 10 to 15 kt. Seas 3 to 5 ft. .TONIGHT...N winds 10 to 15 kt. Seas 3 to 5 ft. .SUN...N winds less than 10 kt. Seas 3 to 4 ft. .SUN NIGHT...E winds less than 10 kt. Seas 2 ft or less. .MON...E winds 10 kt. Seas 2 ft or less. .MON NIGHT...E winds 10 to 15 kt. Seas 2 ft or less. .TUE...SE winds 10 to 15 kt. Seas 3 to 4 ft. .TUE NIGHT...SE winds less than 10 kt. Seas 3 to 4 ft. .WED...Variable winds less than 10 kt, becoming NW less than 10 kt in the afternoon. Seas 3 to 4 ft. .WED NIGHT...N winds 10 to 15 kt. Seas 3 to 5 ft.