000 FZNT32 KNHC 201451 OFFN21 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 1051 AM EDT Sat Oct 20 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 persist over the SW Gulf through early next week. A cold front will reach the northern Gulf waters this evening. It is expected to become stationary as it reaches from S Florida to near 25N97W by Sun evening. Low pressure will develop over the far western Gulf late Sun night along the surface trough near 26N96W. It will lift north- northeastward through Mon night, then east-northeastward across the north-central Gulf through Wed as high pressure builds across the water north of the front and to the west of the low. A front will extend southwestward from the low through Wed. Another cold front will approach the far NE Gulf Wed. Fresh to strong winds and building seas are expected over these waters through period. Numerous showers and thunderstorms are likely over much of the western Gulf through Wed and scattered showers and isolated thunderstorms are expected over the north-central Gulf. Gulf of Mexico N of 26N W of 87W .THIS AFTERNOON...E winds less than 10 kt. Seas 3 to 5 ft. .TONIGHT...E winds less than 10 kt, becoming NE 10 to 20 kt after midnight. Seas 3 to 5 ft. .SUN...NE winds 15 to 25 kt. Seas 6 to 8 ft. .SUN NIGHT...NE winds 15 to 25 kt. Seas 7 to 10 ft. .MON...E winds 10 to 20 kt. Seas 6 to 9 ft. .MON NIGHT...E winds 15 to 25 kt. Seas 6 to 8 ft. .TUE...SE winds 15 to 25 kt. Seas 6 to 8 ft. .TUE NIGHT...NE winds 15 to 25 kt. Seas 6 to 8 ft. .WED...E winds 10 to 20 kt. Seas 5 to 7 ft. .WED NIGHT...NE winds 10 to 20 kt. Seas 5 to 7 ft. Gulf of Mexico from 22N to 26N W of 87W .THIS AFTERNOON...E winds 10 to 15 kt. Seas 4 to 6 ft. .TONIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. .SUN...E winds 10 to 15 kt. Seas 4 to 6 ft. .SUN NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. .MON...SE winds 10 to 20 kt. Seas 5 to 7 ft. .MON NIGHT...SE winds 10 to 15 kt. Seas 5 to 7 ft. .TUE...S winds 10 to 15 kt. Seas 5 to 7 ft. .TUE NIGHT...N winds less than 10 kt. Seas 4 to 6 ft. .WED...S winds less than 10 kt. Seas 4 to 6 ft. .WED NIGHT...NW winds less than 10 kt. Seas 3 to 5 ft. SW Gulf of Mexico S of 22N W of 87W .THIS AFTERNOON...Within 60 nm of coast of Veracruz, NW winds 10 to 20 kt. Elsewhere, E winds 10 to 15 kt. Seas 4 to 6 ft. .TONIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. .SUN...E winds 10 to 15 kt. Seas 5 to 7 ft within 60 nm of coast of Veracruz, and 3 to 4 ft elsewhere. .SUN NIGHT...NE winds 10 to 15 kt. Seas 5 to 7 ft within 60 nm of coast of Veracruz, and 3 to 4 ft elsewhere. .MON...E winds 10 to 15 kt. Seas 3 to 5 ft. .MON NIGHT...N winds 10 to 15 kt. Seas 3 to 5 ft. .TUE...NE to E winds 10 to 15 kt. Seas 3 to 5 ft. .TUE NIGHT...N winds less than 10 kt. Seas 3 to 5 ft. .WED...NE winds less than 10 kt. Seas 3 to 5 ft. .WED NIGHT...NE winds less than 10 kt. Seas 3 to 4 ft. Gulf of Mexico E of 87W .THIS AFTERNOON...E winds 10 to 15 kt. Seas 3 to 5 ft. .TONIGHT...NE winds less than 10 kt. Seas 2 to 3 ft. .SUN...NE winds 10 to 20 kt. Seas 3 to 5 ft. .SUN NIGHT...NE winds 10 to 20 kt. Seas 3 to 5 ft. .MON...E winds 10 to 20 kt. Seas 4 to 6 ft. .MON NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .TUE...E winds 10 to 15 kt. Seas 3 to 5 ft. .TUE NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. .WED...NE winds 10 to 15 kt. Seas 3 to 4 ft. .WED NIGHT...N winds 10 to 15 kt. Seas 3 ft.