000 FZNT32 KNHC 190304 OFFN21 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 1004 PM EST Sat Dec 18 2021 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 cold front has moved off the Texas coast this evening, and gale force wind gusts are developing behind it. These winds will prevail into Sun, before diminishing slightly. The front will move slowly SE through the Gulf until low pressure forms along it in the west-central Gulf Mon. The front will then accelerate as the low moves NE into the SE U.S. Tue night. Winds and seas will subside Wed through Thu in the wake of the front, as weak high pressure builds in across the Gulf. Gulf of Mexico N of 26N W of 87W .TONIGHT...SW winds less than 10 kt, shifting to NW after midnight. Seas 3 to 4 ft. .SUN...N winds 15 to 25 kt. Seas 5 to 7 ft. .SUN NIGHT...NE winds 10 to 20 kt. Seas 5 to 7 ft. .MON...NE winds 10 to 20 kt. Seas 5 to 7 ft. .MON NIGHT...N winds 10 to 20 kt. Seas 5 to 7 ft. .TUE...N winds 10 to 20 kt. Seas 6 to 8 ft. .TUE NIGHT...N winds 10 to 20 kt. Seas 5 to 7 ft. .WED...N winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 4 to 6 ft. .WED NIGHT...NE winds 10 kt. Seas 3 to 4 ft. .THU...SE winds less than 10 kt. Seas 3 ft. .THU NIGHT...S winds 10 to 15 kt. Seas 3 ft. Gulf of Mexico from 22N to 26N W of 87W .TONIGHT...SE winds less than 10 kt. Seas 3 to 4 ft. .SUN...NE winds less than 10 kt, increasing to 10 to 20 kt in the afternoon. Seas 5 to 7 ft. .SUN NIGHT...NE winds 10 to 20 kt. Seas 6 to 9 ft. .MON...E winds 10 to 20 kt, shifting to NW in the afternoon. Seas 6 to 9 ft. .MON NIGHT...NW winds 10 to 20 kt. Seas 6 to 9 ft. .TUE...NW winds 10 to 20 kt. Seas 6 to 9 ft. .TUE NIGHT...N winds 10 to 20 kt. Seas 6 to 8 ft. .WED...N winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 4 to 6 ft. .WED NIGHT...E winds less than 10 kt. Seas 3 to 5 ft. .THU...SE winds less than 10 kt. Seas 3 to 4 ft. .THU NIGHT...SE winds 10 to 15 kt. Seas 3 to 4 ft. SW Gulf of Mexico S of 22N W of 87W .TONIGHT...SE winds less than 10 kt. Seas 2 ft or less. .SUN...Within 60 nm of coast of Veracruz, NW winds 10 to 15 kt, increasing to 15 to 25 kt in the afternoon,Seas 2 ft or less, building to 3 to 5 ft in the afternoon. Elsewhere, E winds less than 10 kt,Seas 2 ft or less. .SUN NIGHT...NW winds 15 to 25 kt within 60 nm of coast of Veracruz, and NE less than 10 kt elsewhere. Seas 6 to 9 ft within 60 nm of coast of Veracruz, and 4 to 6 ft elsewhere. .MON...Within 60 nm of coast of Veracruz, NW winds 15 to 25 kt. Elsewhere, S winds 10 to 15 kt, shifting to W 15 to 25 kt in the afternoon. Seas 6 to 9 ft. .MON NIGHT...N winds 15 to 25 kt. Seas 6 to 9 ft. .TUE...N winds 10 to 20 kt. Seas 6 to 9 ft. .TUE NIGHT...N winds 10 to 15 kt. Seas 5 to 7 ft. .WED...N winds less than 10 kt. Seas 4 to 6 ft. .WED NIGHT...E winds less than 10 kt. Seas 3 to 4 ft. .THU...E winds less than 10 kt. Seas 3 ft in the morning, subsiding to 2 ft or less. .THU NIGHT...E winds less than 10 kt. Seas 2 ft or less. Gulf of Mexico E of 87W .TONIGHT...S winds less than 10 kt. Seas 3 to 4 ft. .SUN...W winds less than 10 kt. Seas 3 ft in the morning, subsiding to 2 ft or less. .SUN NIGHT...NE winds less than 10 kt. Seas 2 ft or less, building to 3 ft after midnight. .MON...E winds 10 to 15 kt. Seas 3 ft. .MON NIGHT...S winds 10 to 15 kt. Seas 3 to 4 ft. .TUE...W winds 10 to 20 kt. Seas 4 to 6 ft. .TUE NIGHT...NW winds 10 to 20 kt. Seas 5 to 7 ft. .WED...NW winds 15 kt. Seas 5 to 7 ft. .WED NIGHT...N winds 10 to 15 kt. Seas 4 to 6 ft. .THU...NE winds less than 10 kt. Seas 3 to 5 ft. .THU NIGHT...E winds less than 10 kt. Seas 3 to 4 ft in the evening, subsiding to 2 ft or less.