000 FZNT32 KNHC 190257 OFFN21 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 957 PM EST Tue Dec 18 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 Strong and convective cold front will race across the Gulf waters from late Wed through early Fri. Gale force winds will develop W of the front on Thu with seas building to near 20 ft. A post-frontal surface high pressure will set up over the central gulf waters on Sat, and move to over the NE waters on Sun. Gulf of Mexico N of 26N W of 87W ...GALE WARNING... ...GALE CONDITIONS POSSIBLE... .TONIGHT...SE winds 10 to 15 kt. Seas 2 ft or less. .WED...S winds 10 to 15 kt. Seas 3 to 4 ft. .WED NIGHT...W winds 10 to 20 kt. Seas 3 to 5 ft. .THU...NW winds 25 to 35 kt. Seas 5 to 7 ft, building to 8 to 11 ft in the afternoon. .THU NIGHT...NW winds 25 to 35 kt. Seas 12 to 17 ft. .FRI...NW winds 20 to 30 kt. Seas 10 to 15 ft. .FRI NIGHT...NW winds 15 to 25 kt, shifting to W 10 to 15 kt after midnight. Seas 6 to 9 ft. .SAT...SW winds less than 10 kt, shifting to S in the afternoon. Seas 3 to 5 ft. .SAT NIGHT...S winds less than 10 kt. Seas 3 ft. .SUN...S winds less than 10 kt in the morning, becoming variable winds less than 10 kt. Seas 2 ft or less. .SUN 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 ...GALE CONDITIONS POSSIBLE... .TONIGHT...SE winds 10 to 15 kt. Seas 2 ft or less, building to 3 ft after midnight. .WED...S winds less than 10 kt. Seas 3 ft. .WED NIGHT...W winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 3 to 4 ft. .THU...NW winds 20 to 30 kt. Seas 3 to 5 ft, building to 7 to 10 ft in the afternoon. .THU NIGHT...NW winds 25 to 35 kt. Seas 10 to 15 ft. .FRI...NW winds 20 to 30 kt. Seas 10 to 15 ft. .FRI NIGHT...N winds 10 to 15 kt, shifting to W after midnight. Seas 8 to 11 ft, subsiding to 6 to 8 ft after midnight. .SAT...S winds less than 10 kt, shifting to SE in the afternoon. Seas 4 to 6 ft. .SAT NIGHT...SE winds 10 to 15 kt. Seas 3 to 5 ft. .SUN...SE winds less than 10 kt. Seas 3 ft. .SUN NIGHT...E winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 3 ft. SW Gulf of Mexico S of 22N W of 87W .TONIGHT...SE winds 10 to 15 kt. Seas 2 ft or less, building to 3 to 4 ft after midnight. .WED...SE winds 10 to 15 kt, shifting to S in the afternoon. Seas 3 to 4 ft in the morning, subsiding to 2 ft or less. .WED NIGHT...Within 60 nm of coast of Veracruz, NW winds less than 10 kt, increasing to 10 to 15 kt after midnight. Elsewhere, W winds less than 10 kt. Seas 2 ft or less. .THU...NW winds 10 to 20 kt. Seas 2 ft or less, building to 4 to 6 ft in the afternoon. .THU NIGHT...N winds 15 to 25 kt. Seas 6 to 9 ft. .FRI...NW winds 10 to 20 kt. Seas 7 to 10 ft. .FRI NIGHT...E winds less than 10 kt. Seas 6 to 9 ft. .SAT...SE winds less than 10 kt. Seas 4 to 6 ft. .SAT NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. .SUN...E winds 10 to 15 kt. Seas 3 to 4 ft. .SUN NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. Gulf of Mexico E of 87W ...GALE CONDITIONS POSSIBLE... .TONIGHT...E winds 10 kt. Seas 2 ft or less. .WED...SE winds 10 to 15 kt. Seas 3 to 4 ft. .WED NIGHT...S winds 10 to 20 kt. Seas 4 to 6 ft. .THU...SW winds 15 to 25 kt. Seas 7 to 10 ft. .THU NIGHT...W winds 25 to 35 kt. Seas 8 to 13 ft, building to 11 to 16 ft after midnight. .FRI...W winds 20 to 30 kt. Seas 14 to 19 ft. .FRI NIGHT...NW winds 20 to 25 kt, diminishing to 10 to 20 kt after midnight. Seas 13 to 17 ft, subsiding to 10 to 14 ft after midnight. .SAT...NW winds 10 to 15 kt, shifting to N in the afternoon. Seas 7 to 10 ft. .SAT NIGHT...E winds less than 10 kt. Seas 4 to 6 ft. .SUN...NE winds less than 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 3 to 4 ft. .SUN NIGHT...NE winds 10 to 15 kt. Seas 3 ft.