453 FZNT32 KNHC 190814 OFFN21 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 414 AM EDT Sun Aug 19 2018 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 surface trough will develop along the western Yucatan Peninsula during the late afternoons, then drift westward across the southwest gulf waters during the overnight hours accompanied by a fresh east to southeast wind shift with the trough dissipating along 96W during the late mornings. Otherwise, an east to west ridge will extend across the gulf waters between 26N and 27N accompanied by gentle to moderate anticyclonic flow which is forecast to increase to a fresh southerly breeze across the northwest gulf waters this evening and continue through late tonight. Gulf of Mexico N of 26N W of 87W .TODAY...S winds 10 to 15 kt. Seas 2 ft or less. .TONIGHT...S winds 10 to 15 kt. Seas 2 ft or less, building to 3 ft after midnight. .MON...S winds 10 to 15 kt. Seas 3 ft. .MON NIGHT...S winds 10 kt. Seas 2 ft or less. .TUE...S winds less than 10 kt in the morning, becoming variable winds less than 10 kt. Seas 2 ft or less. .TUE NIGHT...Variable winds less than 10 kt. Seas 2 ft or less. .WED...NW winds less than 10 kt. Seas 2 ft or less. .WED NIGHT...NW winds less than 10 kt in the evening, becoming variable winds less than 10 kt. Seas 2 ft or less. .THU...Variable winds less than 10 kt. Seas 2 ft or less. .THU NIGHT...Variable winds less than 10 kt. Seas 2 ft or less. Gulf of Mexico from 22N to 26N W of 87W .TODAY...SE winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 3 ft. .TONIGHT...SE winds 10 to 15 kt. Seas 3 to 4 ft. .MON...SE winds 10 to 15 kt. Seas 3 to 4 ft. .MON NIGHT...SE winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 3 to 4 ft. .TUE...SE winds 10 to 15 kt, shifting to E in the afternoon. Seas 3 to 4 ft. .TUE NIGHT...E winds less than 10 kt. Seas 2 ft or less, building to 3 ft after midnight. .WED...E winds less than 10 kt. Seas 2 ft or less. .WED NIGHT...E winds less than 10 kt. Seas 2 ft or less. .THU...E winds less than 10 kt in the morning, becoming variable winds less than 10 kt. Seas 2 ft or less. .THU NIGHT...E winds less than 10 kt. Seas 2 ft or less. SW Gulf of Mexico S of 22N W of 87W .TODAY...SE winds less than 10 kt within 60 nm of coast of Veracruz, and SE 10 to 15 kt elsewhere. Seas 3 ft in the morning, subsiding to 2 ft or less. .TONIGHT...Within 60 nm of coast of Veracruz, E winds less than 10 kt, shifting to SE after midnight. Elsewhere, E 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...E winds less than 10 kt within 60 nm of coast of Veracruz, and E 10 to 15 kt elsewhere. Seas 3 to 4 ft. .TUE...E winds 10 to 15 kt. Seas 3 to 4 ft. .TUE NIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. .WED...E winds 10 to 15 kt, shifting to NE in the afternoon. Seas 3 ft in the morning, subsiding to 2 ft or less. .WED NIGHT...NE winds less than 10 kt. Seas 2 ft or less. .THU...NE winds less than 10 kt. Seas 2 ft or less. .THU NIGHT...NE winds less than 10 kt, shifting to E after midnight. Seas 2 ft or less. Gulf of Mexico E of 87W .TODAY...SE winds less than 10 kt. Seas 2 ft or less. .TONIGHT...Variable winds less than 10 kt, becoming SE less than 10 kt after midnight. Seas 2 ft or less. .MON...SE winds less than 10 kt. Seas 2 ft or less. .MON NIGHT...SE winds less than 10 kt. Seas 2 ft or less. .TUE...E winds less than 10 kt. Seas 2 ft or less. .TUE NIGHT...E winds less than 10 kt. Seas 2 ft or less. .WED...NE winds less than 10 kt. Seas 2 ft or less. .WED NIGHT...NE winds less than 10 kt. Seas 2 ft or less. .THU...NE winds less than 10 kt in the morning, becoming variable winds less than 10 kt. Seas 2 ft or less. .THU NIGHT...E winds less than 10 kt. Seas 2 ft or less.