000 FZNT32 KNHC 172117 OFFN21 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 417 PM EST Mon Dec 17 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 ridge will prevail across the Gulf of Mexico through Tue night as a high pressure center moves from the Mississippi Valley towards North Carolina. A low pressure system will move NE from the coast of Texas Wed to the SE United States Thu, dragging a cold front across the Gulf waters. Marine conditions are expected to deteriorate across the region on Thu morning as the low pressure deepens over the SE of United States. Strong to minimal gale force winds are expected across the central and northern Gulf Thu night and Fri. Gulf of Mexico N of 26N W of 87W ...GALE CONDITIONS POSSIBLE... .TONIGHT...E winds 10 kt. Seas 2 ft or less. .TUE...E winds 10 kt. Seas 2 ft or less. .TUE NIGHT...SE winds 10 to 15 kt. Seas 2 ft or less, building to 3 ft after midnight. .WED...S winds 10 to 15 kt. Seas 3 to 4 ft. .WED NIGHT...W winds 10 to 15 kt. Seas 3 to 4 ft. .THU...W winds 20 to 30 kt. Seas 5 to 7 ft, building to 7 to 10 ft in the afternoon. .THU NIGHT...NW winds 25 to 35 kt. Seas 12 to 17 ft. .FRI...NW winds 25 to 35 kt. Seas 11 to 16 ft. .FRI NIGHT...NW winds 15 to 25 kt, diminishing to 10 to 15 kt after midnight. Seas 8 to 11 ft, subsiding to 5 to 7 ft after midnight. .SAT...W winds less than 10 kt, shifting to S in the afternoon. Seas 4 to 6 ft. .SAT NIGHT...SE winds less than 10 kt. Seas 3 ft. Gulf of Mexico from 22N to 26N W of 87W ...GALE CONDITIONS POSSIBLE... .TONIGHT...E winds less than 10 kt. Seas 2 ft or less. .TUE...SE winds less than 10 kt. Seas 2 ft or less. .TUE NIGHT...SE winds less than 10 kt. Seas 2 ft or less. .WED...S winds less than 10 kt. Seas 2 ft or less. .WED NIGHT...W winds less than 10 kt. Seas 3 ft. .THU...NW winds 15 to 25 kt. Seas 5 to 7 ft. .THU NIGHT...NW winds 25 to 35 kt. Seas 8 to 13 ft, building to 11 to 16 ft after midnight. .FRI...NW winds 25 to 35 kt. Seas 11 to 16 ft. .FRI NIGHT...NW winds 10 to 20 kt. Seas 7 to 10 ft. .SAT...E winds less than 10 kt. Seas 5 to 7 ft. .SAT NIGHT...E winds less than 10 kt, shifting to SE after midnight. Seas 3 to 5 ft. SW Gulf of Mexico S of 22N W of 87W .TONIGHT...NE winds less than 10 kt in the evening, becoming variable winds less than 10 kt. Seas 2 ft or less. .TUE...Variable winds less than 10 kt, becoming E less than 10 kt in the afternoon. Seas 2 ft or less. .TUE NIGHT...Within 60 nm of coast of Veracruz, SE winds 10 to 15 kt. Elsewhere, E winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 2 ft or less. .WED...SE winds less than 10 kt. Seas 2 ft or less. .WED NIGHT...Variable winds less than 10 kt. Seas 2 ft or less. .THU...NW winds 10 to 15 kt. Seas 2 ft or less, building to 3 to 4 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 8 to 11 ft. .FRI NIGHT...N winds 10 to 15 kt in the evening, becoming variable winds less than 10 kt. Seas 6 to 9 ft. .SAT...Variable winds less than 10 kt, becoming E less than 10 kt in the afternoon. Seas 4 to 6 ft. .SAT NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. Gulf of Mexico E of 87W ...GALE CONDITIONS POSSIBLE... .TONIGHT...N winds 10 kt. Seas 3 to 4 ft. .TUE...NE winds 10 kt. Seas 3 ft in the morning, subsiding to 2 ft or less. .TUE NIGHT...E winds 10 kt. Seas 2 ft or less. .WED...SE winds 10 to 15 kt. Seas 2 ft or less. .WED NIGHT...S winds 10 to 20 kt. Seas 3 to 5 ft. .THU...SW winds 15 to 25 kt. Seas 5 to 7 ft. .THU NIGHT...W winds 20 to 30 kt. Seas 7 to 10 ft, building to 10 to 15 ft after midnight. .FRI...W winds 25 to 35 kt. Seas 14 to 19 ft. .FRI NIGHT...NW winds 15 to 25 kt. Seas 14 to 17 ft, subsiding to 11 to 14 ft after midnight. .SAT...NW winds 10 to 15 kt. Seas 7 to 10 ft. .SAT NIGHT...NE winds less than 10 kt. Seas 4 to 6 ft.