000 FZNT32 KNHC 291216 OFFN21 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 816 AM EDT Thu Jun 29 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...Moderate to fresh SE to S return flow will persist across all but NE part of basin through Sat before weak high pressure develops across the NE Gulf and winds elsewhere become E to SE. The Yucatan trough will dominate marine conditions across S central and SW portions through the period. Gulf of Mexico N of 26N W of 87W .THIS AFTERNOON...S winds 10 to 20 kt. Seas 3 to 5 ft. .TONIGHT...S winds 10 to 15 kt. Seas 3 to 5 ft. .FRI...SE winds 10 to 15 kt. Seas 3 to 5 ft. .FRI NIGHT...SE winds 10 to 15 kt. Seas 3 to 5 ft. .SAT...SE winds 10 to 15 kt. Seas 3 to 5 ft. .SAT NIGHT...SE winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 3 to 5 ft. .SUN...SE winds 10 to 15 kt. Seas 3 to 5 ft. .SUN NIGHT...E winds less than 10 kt, shifting to SE after midnight. Seas 3 to 4 ft. .MON...SE winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 3 ft. .MON NIGHT...E winds less than 10 kt, shifting to SE after midnight. Seas 2 ft or less. Gulf of Mexico from 22N to 26N W of 87W .THIS AFTERNOON...SE winds 10 to 15 kt. Seas 3 to 5 ft. .TONIGHT...SE winds 10 to 20 kt. Seas 4 to 6 ft. .FRI...SE winds 10 to 20 kt. Seas 4 to 6 ft. .FRI NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. .SAT...SE winds 10 to 20 kt. Seas 4 to 6 ft. .SAT NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. .SUN...E winds 10 to 15 kt. Seas 3 to 5 ft. .SUN NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. .MON...SE winds 10 to 15 kt. Seas 3 to 4 ft. .MON NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. SW Gulf of Mexico S of 22N W of 87W .THIS AFTERNOON...SE winds 10 to 20 kt. Seas 3 to 5 ft. .TONIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft. .FRI...SE winds 10 to 20 kt. Seas 4 to 6 ft. .FRI NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft. .SAT...E winds 10 to 20 kt. Seas 3 to 5 ft. .SAT NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft. .SUN...E winds 10 to 20 kt. Seas 3 to 5 ft. .SUN NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. .MON...E winds 10 to 15 kt. Seas 3 to 4 ft. .MON NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft. Gulf of Mexico E of 87W .THIS AFTERNOON...SE winds less than 10 kt. Seas 2 ft or less. .TONIGHT...E winds less than 10 kt. Seas 2 ft or less. .FRI...E winds less than 10 kt. Seas 2 ft or less. .FRI NIGHT...E winds 10 to 15 kt. Seas 2 ft or less, building to 3 ft after midnight. .SAT...SE winds 10 to 15 kt, shifting to E in the afternoon. Seas 3 ft in the morning, subsiding to 2 ft or less. .SAT NIGHT...E winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 2 ft or less, building to 3 ft after midnight. .SUN...E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 3 ft in the morning, subsiding to 2 ft or less. .SUN NIGHT...NE winds 10 to 15 kt. Seas 2 ft or less. .MON...E winds 10 to 15 kt, shifting to NE in the afternoon. Seas 2 ft or less. .MON NIGHT...NE winds 10 to 15 kt. Seas 2 ft or less.