000 FZNT31 KNHC 160823 OFFN20 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 423 AM EDT Mon Oct 16 2017 Marine Weather HF Voice Broadcast for the Tropical N Atlantic from 07N to 22N between 55W and 64W, the SW N Atlantic S of 31N W of 65W including Bahamas, and the Caribbean Sea. 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 Caribbean Sea and Tropical N ATLC from 07N to 19N between 55W and 64W .SYNOPSIS...A tropical wave currently along 74W will move W through the Central Caribbean through Tue, through the Western Caribbean during mid week, and through the NW Caribbean late in the week, with fresh trades E of the wave axis through Wed. A second tropical wave will pass through the tropical waters E of the Lesser Antilles today accompanied by TSTMS. A third wave wave will enter the tropical waters on Tue night accompanied by fresh to locally strong E trades and building seas which will spread W across the Caribbean E of 70W by Thu, and then extend across the Central Caribbean on Fri. NW Caribbean W of 85W .TODAY...NE winds less than 10 kt. Seas 2 ft or less. .TONIGHT...NE winds less than 10 kt. Seas 2 ft or less. .TUE...NE winds less than 10 kt. Seas 2 ft or less. .TUE NIGHT...NE winds less than 10 kt. Seas 2 ft or less. .WED...NE winds less than 10 kt. Seas 2 ft or less. .WED NIGHT...NE winds less than 10 kt. Seas 2 ft or less. .THU...E winds less than 10 kt. Seas 3 ft. .THU NIGHT...E winds less than 10 kt. Seas 2 ft or less, building to 3 to 4 ft after midnight. .FRI...E winds less than 10 kt. Seas 3 to 4 ft. .FRI NIGHT...NE winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 3 to 5 ft. Caribbean N of 15N between 72W and 85W .TODAY...E winds 10 to 15 kt S of 18N, and E less than 10 kt elsewhere. Seas 3 to 5 ft S of 18N, and 2 ft or less elsewhere. .TONIGHT...E winds 10 to 15 kt S of 18N, and NE less than 10 kt elsewhere. Seas 3 to 5 ft S of 18N, and 2 ft or less elsewhere. .TUE...E winds 10 to 15 kt S of 18N, and E less than 10 kt elsewhere. Seas 3 to 5 ft S of 18N, and 2 ft or less elsewhere. .TUE NIGHT...E winds 10 to 20 kt S of 18N, and NE less than 10 kt elsewhere. Seas 4 to 6 ft S of 18N, and 2 ft or less elsewhere. .WED...E winds 10 to 20 kt. Seas 4 to 6 ft. .WED NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. .THU...E winds 10 to 15 kt. Seas 3 to 5 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .FRI...E winds 10 to 20 kt. Seas 5 to 7 ft. .FRI NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. Caribbean from 11N to 15N W of 72W .TODAY...E winds 10 to 15 kt. Seas 4 to 6 ft. .TONIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .TUE...E winds 10 to 20 kt. Seas 4 to 6 ft. .TUE NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. .WED...E winds 10 to 20 kt. Seas 5 to 7 ft. .WED NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. .THU...E winds 10 to 20 kt. Seas 5 to 7 ft. .THU NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. .FRI...E winds 10 to 20 kt. Seas 5 to 7 ft. .FRI NIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft. SW Caribbean S of 11N .TODAY...NE winds 10 to 15 kt, shifting to E in the afternoon. Seas 3 to 4 ft. .TONIGHT...Variable winds less than 10 kt. Seas 3 ft. .TUE...W winds less than 10 kt. Seas 3 ft. .TUE NIGHT...N winds less than 10 kt. Seas 3 ft. .WED...W winds less than 10 kt. Seas 3 to 4 ft. .WED NIGHT...NW winds less than 10 kt. Seas 3 to 4 ft. .THU...W winds less than 10 kt. Seas 3 to 4 ft. .THU NIGHT...NW winds less than 10 kt. Seas 3 to 4 ft. .FRI...W winds less than 10 kt. Seas 3 to 4 ft. .FRI NIGHT...NW winds less than 10 kt. Seas 3 to 4 ft. Caribbean between 64W and 72W .TODAY...E winds 10 to 20 kt. Seas 3 to 5 ft Gulf of Venezuela, and 5 to 7 ft elsewhere. .TONIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft Gulf of Venezuela, and 6 to 8 ft elsewhere. .TUE...E winds 10 to 20 kt. Seas 3 to 5 ft Gulf of Venezuela, and 6 to 8 ft elsewhere. .TUE NIGHT...E winds 15 to 25 kt Gulf of Venezuela, and E 10 to 20 kt elsewhere. Seas 6 to 8 ft. .WED...E winds 10 to 20 kt. Seas 6 to 8 ft. .WED NIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft. .THU...E winds 10 to 20 kt. Seas 6 to 9 ft. .THU NIGHT...E winds 15 to 25 kt. Seas 7 to 10 ft. .FRI...E winds 15 to 25 kt. Seas 7 to 10 ft. .FRI NIGHT...E winds 15 to 25 kt. Seas 7 to 10 ft. Offshore Leeward Islands and adjacent ATLC waters from 15N to 19N W of 55W .TODAY...E winds 10 to 20 kt. Seas 6 to 9 ft. .TONIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft. .TUE...E winds 10 to 20 kt. Seas 6 to 8 ft. .TUE NIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft. .WED...E winds 10 to 20 kt. Seas 6 to 9 ft. .WED NIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft. .THU...E winds 10 to 20 kt. Seas 6 to 9 ft. .THU NIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft. .FRI...E winds 10 to 20 kt. Seas 6 to 8 ft. .FRI NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. Offshore Windward Islands and adjacent ATLC waters from 07N to 15N W of 55W .TODAY...E winds 10 to 20 kt. Seas 6 to 8 ft. .TONIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. .TUE...E winds 10 to 20 kt. Seas 5 to 7 ft. .TUE NIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft. .WED...E winds 10 to 20 kt. Seas 6 to 9 ft. .WED NIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft. .THU...E winds 10 to 20 kt. Seas 7 to 10 ft. .THU NIGHT...E winds 10 to 20 kt. Seas 7 to 9 ft. .FRI...E winds 10 to 20 kt. Seas 6 to 9 ft. .FRI NIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft. SYNOPSIS FOR THE SW N ATLC INCLUDING THE BAHAMAS .SYNOPSIS...A broad surface trough is between 65W and 70W with a surface low at 23N70W which may develop into a tropical cyclone as it moves N and NE along the surface trough reaching near 26N72W tonight, and passing through 31N69W on Tue. Strong to near southerly flow and scattered TSTMS will spread N across the ATLC waters to the E of the low and trough through Tue. A cold front will move off the SE coast of the United States tonight and race E merging with the trough along a position from 31N65W to the Central Bahamas on Wed, then stall and drift W on Thu and Fri. ATLC waters from 27N to 31N W of 77W .TODAY...SE winds less than 10 kt in the morning, becoming variable winds less than 10 kt. Seas 4 to 5 ft. .TONIGHT...NE winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 4 to 6 ft. .TUE...NE winds 10 to 20 kt. Seas 6 to 9 ft. .TUE NIGHT...NE winds 15 to 25 kt. Seas 7 to 10 ft. .WED...NE winds 10 to 20 kt. Seas 7 to 10 ft. .WED NIGHT...NE winds 10 to 20 kt. Seas 6 to 9 ft. .THU...NE winds 10 to 20 kt. Seas 6 to 8 ft. .THU NIGHT...NE winds 10 to 20 kt. Seas 6 to 8 ft. .FRI...NE winds 15 to 20 kt. Seas 6 to 8 ft. .FRI NIGHT...E winds 15 to 20 kt. Seas 6 to 8 ft. ATLC WATERS FROM 27N TO 31N BETWEEN 65W AND 77W .TODAY...E winds less than 10 kt W of 70W, and S 10 to 20 kt elsewhere. Seas 5 to 7 ft W of 70W, and 8 to 11 ft elsewhere. .TONIGHT...NE winds less than 10 kt W of 70W, and S 15 to 25 kt elsewhere. Seas 5 to 7 ft W of 70W, and 9 to 14 ft elsewhere. .TUE...NE winds 10 to 15 kt W of 70W, and SW 15 to 25 kt elsewhere. Seas 6 to 8 ft W of 70W, and 8 to 13 ft elsewhere. .TUE NIGHT...E winds 10 to 15 kt. Seas 7 to 10 ft. .WED...E winds less than 10 kt. Seas 6 to 9 ft. .WED NIGHT...E winds 10 to 15 kt. Seas 6 to 8 ft. .THU...NE winds 10 to 15 kt. Seas 6 to 7 ft. .THU NIGHT...NE winds 10 to 15 kt. Seas 5 to 7 ft. .FRI...NE winds 10 to 20 kt. Seas 6 to 8 ft. .FRI NIGHT...NE winds 10 to 20 kt. Seas 6 to 8 ft. Bahamas N of 22N .TODAY...Variable winds less than 10 kt. Seas 3 to 4 ft. .TONIGHT...E winds less than 10 kt. Seas 3 to 5 ft. .TUE...Variable winds less than 10 kt. Seas 3 to 4 ft. .TUE NIGHT...E winds less than 10 kt. Seas 3 to 4 ft. .WED...E winds less than 10 kt. Seas 3 to 4 ft. .WED NIGHT...E winds less than 10 kt. Seas 3 to 4 ft. .THU...E winds less than 10 kt. Seas 3 to 4 ft. .THU NIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. .FRI...E winds 10 to 15 kt. Seas 3 to 5 ft. .FRI NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. ATLC waters from 22N to 27N between 65W and the Bahamas .TODAY...SE winds less than 10 kt W of 70W, and SE 20 to 30 kt elsewhere. Seas 6 to 9 ft W of 70W, and 9 to 13 ft elsewhere. .TONIGHT...W of 70W, NW winds less than 10 kt, shifting to SW after midnight. Elsewhere, S winds 20 to 30 kt. Seas 6 to 9 ft W of 70W, and 8 to 13 ft elsewhere. .TUE...W of 70W, NW winds less than 10 kt in the morning, becoming variable winds less than 10 kt. Elsewhere, S winds 10 to 20 kt. Seas 5 to 7 ft W of 70W, and 7 to 10 ft elsewhere. .TUE NIGHT...E winds less than 10 kt W of 70W, and S 10 to 15 kt elsewhere. Seas 5 to 7 ft. .WED...SE winds less than 10 kt. Seas 5 to 6 ft. .WED NIGHT...SE winds less than 10 kt. Seas 5 to 6 ft. .THU...SE winds 10 to 15 kt. Seas 5 to 6 ft. .THU NIGHT...SE winds 10 to 15 kt. Seas 5 to 6 ft. .FRI...SE winds 10 to 15 kt. Seas 5 to 7 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. ATLC waters S of 22N W of 65W .TODAY...SE winds 10 to 20 kt. Seas 5 to 7 ft. .TONIGHT...SE winds 10 to 20 kt. Seas 4 to 6 ft. .TUE...SE winds 10 to 15 kt. Seas 4 to 6 ft. .TUE NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .WED...SE winds 10 to 15 kt. Seas 3 to 5 ft. .WED NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .THU...SE winds 10 to 15 kt. Seas 4 to 6 ft. .THU NIGHT...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. ATLC waters from 19N to 22N between 55W and 65W .TODAY...E winds 15 to 20 kt. Seas 7 to 9 ft. .TONIGHT...E winds 15 to 20 kt. Seas 7 to 8 ft. .TUE...SE winds 15 to 20 kt. Seas 7 to 8 ft. .TUE NIGHT...SE winds 10 to 20 kt. Seas 7 to 8 ft. .WED...SE winds 10 to 20 kt. Seas 7 to 8 ft. .WED NIGHT...E winds 10 to 15 kt. Seas 6 to 8 ft. .THU...E winds 10 to 15 kt. Seas 6 to 7 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 6 to 7 ft. .FRI...E winds 10 to 15 kt. Seas 5 to 7 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 5 to 6 ft.