000 FZNT32 KNHC 190231 OFFN21 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 931 PM 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...A weak cold front has moved into the northern Gulf, but this will dissipate by Sun. High pressure will build in its wake, with mainly gentle N winds over the basin tonight and Sun becoming E by Sun night. Southerly winds will form Mon and increase to fresh in the western Gulf. The next cold front will move off the Texas coast Mon night, with gales expected to develop over the west-central and SW Gulf Tue through Wed. Seas are forecast to build to 14 to 16 ft over the SW Gulf by Tue night into Wed morning. Gulf of Mexico N of 26N W of 87W .TONIGHT...NE winds 10 to 15 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, building to 3 ft after midnight. .MON...S winds 10 to 20 kt. Seas 4 to 6 ft. .MON NIGHT...S winds 10 to 20 kt. Seas 4 to 5 ft. .TUE...NW winds 10 to 20 kt. Seas 5 to 7 ft. .TUE NIGHT...N winds 10 to 20 kt. Seas 6 to 8 ft. .WED...N winds 15 to 20 kt. Seas 6 to 8 ft. .WED NIGHT...N winds 10 to 15 kt. Seas 4 to 6 ft. .THU...N winds less than 10 kt. Seas 3 to 5 ft. .THU NIGHT...E winds 10 kt. Seas 3 to 4 ft. Gulf of Mexico from 22N to 26N W of 87W ...GALE CONDITIONS POSSIBLE TUE... .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 20 kt. Seas 3 to 5 ft. .MON...SE winds 10 to 20 kt. Seas 3 to 5 ft. .MON NIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft. .TUE...SE winds 10 to 20 kt, shifting to N 25 to 35 kt in the afternoon. Seas 5 to 7 ft. .TUE NIGHT...N winds 15 to 25 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. .THU...N winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 5 to 7 ft. .THU NIGHT...E winds less than 10 kt. Seas 3 to 5 ft. SW Gulf of Mexico S of 22N W of 87W ...GALE CONDITIONS POSSIBLE TUE INTO WED... .TONIGHT...N winds less than 10 kt in the evening, becoming variable winds less than 10 kt. Seas 3 ft in the evening, subsiding to 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 20 kt. Seas 2 ft or less, building to 3 to 4 ft after midnight. .MON...SE winds 10 to 20 kt. Seas 3 to 5 ft. .MON NIGHT...SE winds 10 to 15 kt. Seas 3 to 4 ft. .TUE...SE winds 10 to 15 kt, shifting to NE 20 to 30 kt in the afternoon. Seas 3 to 5 ft. .TUE NIGHT...N winds 20 to 30 kt. Seas 6 to 9 ft. .WED...N winds 20 to 30 kt. Seas 7 to 10 ft. .WED NIGHT...N winds 15 to 25 kt. Seas 7 to 10 ft. .THU...N winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 6 to 8 ft. .THU NIGHT...E winds less than 10 kt. Seas 4 to 6 ft. Gulf of Mexico E of 87W .TONIGHT...N winds 10 to 15 kt. Seas 3 to 5 ft. .SUN...NE winds less than 10 kt. Seas 3 to 4 ft. .SUN NIGHT...E winds less than 10 kt. Seas 2 ft or less. .MON...SE winds 10 to 15 kt. Seas 2 ft or less. .MON NIGHT...SE winds 10 to 20 kt. Seas 3 to 5 ft. .TUE...SE winds 10 to 15 kt. Seas 3 to 5 ft. .TUE NIGHT...SE winds 10 to 15 kt. Seas 3 to 5 ft. .WED...NW winds 10 to 15 kt. Seas 3 to 5 ft. .WED NIGHT...N winds 10 to 15 kt. Seas 4 to 6 ft. .THU...N winds 10 to 15 kt. Seas 4 to 6 ft. .THU NIGHT...NE winds 10 kt. Seas 3 to 5 ft.