000 FZNT32 KNHC 202120 OFFN21 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 520 PM 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 cold front extends from 30N92W to a 1016 mb low at 27N96W. A trough extends from the low to 23N96W and to near 19N95W. The cold front will push into the northern Gulf tonight, and sweep across the eastern and central Gulf waters tonight and become stationary from S Florida to 26N93W and warm front to a new 1017 mb low at 26N97W on Mon. A cold front will extend from the new low to 24N96W, and stationary to Mexico near Tampico. The present 1017 mb low over the NW Gulf will dissipate late tonight over the north-central Gulf. The new Low will lift north- northeastward through Mon night, then east-northeastward across the north-central Gulf through Wed night and the NE Gulf Thu, with a front to trail from it to the SW Gulf, and another front from the low eastward across N-central Florida. High pressure will build across the southeastern United States to the waters north of the low and front, and also behind the trailing front. The ensuing gradient will support fresh to strong NE to E winds and building seas over the waters north of the low and front east of 93W, and fresh to strong NW winds over the far western waters west of the trailing front. Gulf of Mexico N of 26N W of 87W .TONIGHT...E winds less than 10 kt, becoming NE 15 to 25 kt after midnight. Seas 3 to 5 ft, except building to 5 to 7 ft late. .SUN...NE winds 15 to 25 kt. Seas 7 to 10 ft. .SUN NIGHT...NE winds 15 to 25 kt. Seas 7 to 10 ft. .MON...E winds 10 to 20 kt. Seas 5 to 7 ft. .MON NIGHT...E winds 15 to 25 kt. Seas 6 to 9 ft. .TUE...SE winds 10 to 20 kt. Seas 5 to 7 ft. .TUE NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. .WED...E to SE winds 10 to 15 kt. Seas 4 to 6 ft. .WED NIGHT...E winds less than 10 kt. Seas 4 to 6 ft. .THU...SE winds less than 10 kt. Seas 3 to 5 ft. .THU NIGHT...N winds 10 to 15 kt. Seas 4 to 6 ft. Gulf of Mexico from 22N to 26N W of 87W .TONIGHT...NE winds 10 to 15 kt. Seas 3 to 5 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...E winds 10 to 15 kt. Seas 5 to 7 ft. .MON NIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft. .TUE...S winds less than 10 kt. Seas 4 to 6 ft. .TUE NIGHT...SW winds less than 10 kt, shifting to E after midnight. Seas 3 to 5 ft. .WED...S winds less than 10 kt. Seas 3 to 5 ft. .WED NIGHT...S winds less than 10 kt in the evening, becoming variable winds less than 10 kt. Seas 3 to 4 ft. .THU...S winds less than 10 kt. Seas 3 to 5 ft. .THU NIGHT...W winds less than 10 kt. Seas 3 to 5 ft. SW Gulf of Mexico S of 22N W of 87W .TONIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft. .SUN...Within 60 nm of coast of Veracruz, NW winds 10 to 20 kt. Elsewhere, E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 3 to 4 ft. .SUN NIGHT...NE winds 10 to 15 kt. Within 60 nm of coast of Veracruz, seas 4 to 6 ft. Elsewhere, seas 3 to 4 ft. .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...E winds less than 10 kt. Seas 3 to 5 ft. .TUE NIGHT...NE winds less than 10 kt. Seas 3 ft. .WED...E winds less than 10 kt. Seas 3 ft in the morning, subsiding to 2 ft or less. .WED NIGHT...E winds less than 10 kt. Seas 2 ft or less. .THU...SE winds 10 to 15 kt. Seas 2 ft or less. .THU NIGHT...NE winds less than 10 kt. Seas 3 to 5 ft. Gulf of Mexico E of 87W .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 3 to 5 ft. .TUE...E winds 10 to 15 kt. Seas 3 to 4 ft. .TUE NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. .WED...NE to E winds 10 to 15 kt. Seas 3 to 4 ft. .WED NIGHT...NE winds less than 10 kt. Seas 2 to 3 ft. .THU...NE winds less than 10 kt. Seas 2 to 3 ft. .THU NIGHT...N winds less than 10 kt. Seas 3 to 4 ft.