000 FZNT32 KNHC 201420 OFFN21 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 1020 AM EDT Fri Oct 20 2017 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...High pressure will continue to extend from the Mid- Atlantic states southwestward to the northern Gulf of Mexico waters through Sunday night, as a cold front moves off the Texas coast. Fresh E winds in the northern Gulf waters will become SE across the NW Gulf waters this morning, continue through Saturday, then become light southerly flow just ahead of the Sunday evening cold front for the Texas coast. The front is expected to reach from FL Panhandle to the Bay of Campeche by late Monday, from SW FL coast to N central Yucatan Peninsula late Tuesday. Strong high pressure will build SE across the area in the wake of the front with fresh to locally strong northerly winds spreading from W to E across the forecast waters. Gulf of Mexico N of 26N W of 87W .THIS AFTERNOON...E winds 10 to 20 kt. Seas 5 to 7 ft. .TONIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. .SAT...SE winds 10 to 20 kt. Seas 4 to 6 ft. .SAT NIGHT...SE winds 10 to 20 kt. Seas 4 to 6 ft. .SUN...SE winds 10 to 15 kt. Seas 4 to 6 ft. .SUN NIGHT...N winds 10 to 15 kt. Seas 4 to 5 ft. .MON...NW winds 15 to 20 kt. Seas 4 to 6 ft. .MON NIGHT...N winds 15 to 20 kt. Seas 4 to 6 ft. .TUE...N winds 15 to 20 kt. Seas 3 to 5 ft. .TUE NIGHT...N winds 15 to 20 kt. Seas 4 to 6 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...E winds 10 to 15 kt. Seas 4 to 6 ft. .SAT...SE winds 10 to 15 kt. Seas 4 to 6 ft. .SAT NIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft. .SUN...SE winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 4 to 6 ft. .SUN NIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. .MON...N winds 10 to 20 kt. Seas 4 to 6 ft. .MON NIGHT...N winds 10 to 20 kt. Seas 4 to 6 ft. .TUE...N winds 10 to 15 kt. Seas 3 to 5 ft. .TUE NIGHT...N winds 10 to 15 kt. Seas 4 to 6 ft. SW Gulf of Mexico S of 22N W of 87W .THIS AFTERNOON...NE winds less than 10 kt. Seas 3 to 4 ft. .TONIGHT...E winds less than 10 kt. Seas 3 to 4 ft. .SAT...SE winds less than 10 kt. Seas 3 to 4 ft. .SAT NIGHT...E winds less than 10 kt. Seas 3 to 4 ft. .SUN...E winds less than 10 kt. Seas 3 to 4 ft. .SUN NIGHT...NE winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 3 to 4 ft. .MON...N winds 15 to 20 kt...except 20 to 25 kt W of 94W. Seas 3 to 5 ft building 5 to 8 ft. .MON NIGHT...N winds 15 to 20 kt...except 20 to 30 kt W of 94W. Seas 5 to 9 ft. .TUE...N winds 15 to 20 kt. Seas 3 to 5 ft. .TUE NIGHT...N winds 15 to 20 kt. Seas 4 to 6 ft. Gulf of Mexico E of 87W .THIS AFTERNOON...E winds 10 to 20 kt. Seas 4 to 6 ft. .TONIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. .SAT...E winds 10 to 20 kt. Seas 4 to 6 ft. .SAT NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. .SUN...SE winds 10 to 20 kt. Seas 4 to 6 ft. .SUN NIGHT...SE winds 10 to 15 kt. Seas 3 to 5 ft. .MON...SE winds 10 to 15 kt. Seas 3 to 5 ft. .MON NIGHT...S winds 10 to 15 kt, shifting to W after midnight. Seas 3 to 5 ft. .TUE...NW winds 10 to 15 kt. Seas 3 to 5 ft. .TUE NIGHT...N winds 10 to 15 kt. Seas 3 to 5 ft.