345 FZNT32 KNHC 301945 OFFN21 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 345 PM EDT Thu Sep 30 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 weak ridge of high pressure will persist north of the Gulf through Fri night, supporting tranquil conditions. Stronger higher pressure will build across the region by Sun, allowing winds and seas to increase over the SE Gulf over the weekend. A weak cold front should move across the Gulf on Mon and Tue, but with little enhancement of the winds and seas. Gulf of Mexico N of 26N W of 87W .TONIGHT...SE winds 10 to 15 kt. Seas 3 to 4 ft. .FRI...SE winds 10 to 15 kt. Seas 3 to 4 ft. .FRI NIGHT AND SAT...SE winds 10 to 15 kt. Seas 3 to 4 ft. .SAT THROUGH SUN...SE winds 10 to 15 kt. Seas 3 to 4 ft. .MON THROUGH TUE...N winds less than 10 kt. Seas 3 ft. Gulf of Mexico from 22N to 26N W of 87W .TONIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. .FRI...SE winds 10 to 15 kt. Seas 3 to 4 ft. .FRI NIGHT AND SAT...SE winds 10 to 15 kt. Seas 3 to 4 ft. .SAT THROUGH TUE...NE 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 within 60 nm of coast of Veracruz, and E 10 to 20 kt elsewhere. Seas 3 to 4 ft. .FRI...SE winds 10 to 15 kt. Seas 3 to 4 ft. .FRI NIGHT AND SAT...E winds less than 10 kt within 60 nm of coast of Veracruz, and E 10 to 20 kt elsewhere. Seas 3 to 4 ft. .SAT THROUGH TUE...NE winds 10 to 15 kt. Seas 3 to 4 ft. Gulf of Mexico E of 87W .TONIGHT...E winds 10 to 15 kt. Seas 3 ft. .FRI...E winds 10 to 15 kt. Seas 3 to 4 ft. .FRI NIGHT AND SAT...E winds 10 to 20 kt. Seas 3 to 5 ft. .SAT THROUGH TUE...E winds 10 to 20 kt. Seas 3 to 5 ft.