566 FZNT32 KNHC 132019 OFFN21 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 419 PM EDT Thu Sep 13 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 broad area of low pressure in the central gulf will shift northwest and reach inland southeast Texas on Fri evening. Fresh to locally strong easterly winds are forecast over the northeast semicircle of the low. This system has a medium chance of becoming a tropical cyclone prior to reaching the Texas coast. A northwest to southeast orientated surface ridge will set up from central Louisiana to Florida Bay by early Sat, with a surface high developing along the ridge near 27N91W late Sat. The surface high will shift slightly south early next week as a surface trough passes slowly east across the north-central gulf waters. Gulf of Mexico N of 26N W of 87W .TONIGHT...SE winds 10 to 20 kt. Seas 4 to 6 ft. .FRI...SE winds 10 to 15 kt. Seas 4 to 6 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft in the evening, subsiding to 2 ft or less. .SAT...E winds less than 10 kt. Seas 2 ft or less. .SAT NIGHT...N winds less than 10 kt. Seas 2 ft or less. .SUN...NW winds less than 10 kt. Seas 2 ft or less. .SUN NIGHT...W winds less than 10 kt. Seas 2 ft or less. .MON...Variable winds less than 10 kt. Seas 2 ft or less. .MON NIGHT...Variable winds less than 10 kt. Seas 2 ft or less. .TUE...Variable winds less than 10 kt. Seas 2 ft or less. .TUE NIGHT...Variable winds less than 10 kt, becoming E less than 10 kt after midnight. Seas 2 ft or less. Gulf of Mexico from 22N to 26N W of 87W .TONIGHT...SE winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 3 to 5 ft. .FRI...SE winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 3 to 5 ft. .FRI NIGHT...SE winds less than 10 kt. Seas 3 to 4 ft in the evening, subsiding to 2 ft or less. .SAT...E winds less than 10 kt. Seas 2 ft or less. .SAT NIGHT...E winds less than 10 kt. Seas 2 ft or less. .SUN...E winds less than 10 kt. Seas 2 ft or less. .SUN NIGHT...E winds less than 10 kt. Seas 2 ft or less. .MON...E winds less than 10 kt. Seas 2 ft or less. .MON NIGHT...E 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. SW Gulf of Mexico S of 22N W of 87W .TONIGHT...Variable winds less than 10 kt, becoming SE less than 10 kt after midnight. Seas 2 ft or less. .FRI...E winds less than 10 kt. Seas 3 ft in the morning, subsiding to 2 ft or less. .FRI NIGHT...E winds less than 10 kt. Seas 2 ft or less. .SAT...E winds less than 10 kt. Seas 2 ft or less. .SAT NIGHT...NE winds less than 10 kt. Seas 2 ft or less, building to 3 ft after midnight. .SUN...E winds less than 10 kt. Seas 2 ft or less. .SUN NIGHT...NE winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 2 ft or less. .MON...E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 2 ft or less. .MON NIGHT...NE winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 2 ft or less. .TUE...E winds 10 to 15 kt. Seas 2 ft or less. .TUE NIGHT...NE winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 2 ft or less, building to 3 ft after midnight. Gulf of Mexico E of 87W .TONIGHT...Variable winds less than 10 kt, becoming NE 10 kt after midnight. Seas 2 ft or less. .FRI...E winds 10 kt in the morning, becoming variable winds less than 10 kt. Seas 2 ft or less. .FRI NIGHT...Variable winds less than 10 kt, becoming N 10 kt after midnight. Seas 2 ft or less. .SAT...N winds less than 10 kt. Seas 2 ft or less. .SAT NIGHT...N winds less than 10 kt. Seas 2 ft or less. .SUN...NW winds less than 10 kt. Seas 2 ft or less. .SUN NIGHT...NW winds less than 10 kt, shifting to SE after midnight. Seas 2 ft or less. .MON...SE winds less than 10 kt. Seas 2 ft or less. .MON NIGHT...E winds less than 10 kt. Seas 2 ft or less. .TUE...E winds less than 10 kt. Seas 2 ft or less. .TUE NIGHT...NE winds less than 10 kt. Seas 2 ft or less.