000 FZNT31 KNHC 121428 OFFN20 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 1028 AM EDT Thu Oct 12 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 weak tropical wave over the S central Caribbean will move across the SW Caribbean through Friday. Another tropical wave will reach the Atlc waters by Friday with numerous showers and scattered tstms. Some enhancement of the trades is expected north of Colombia Friday night through Sunday night. Elsewhere, winds and seas will remain relatively tranquil throughout the period. NW Caribbean W of 85W .THIS AFTERNOON...NE winds less than 10 kt. Seas 3 to 4 ft. .TONIGHT...NE winds less than 10 kt. Seas 3 to 4 ft. .FRI...N winds less than 10 kt. Seas 3 ft. .FRI NIGHT...N winds less than 10 kt in the evening, becoming variable winds less than 10 kt. Seas 2 ft or less. .SAT...Variable 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...NE winds less than 10 kt. Seas 2 ft or less. .MON...Variable winds less than 10 kt. Seas 2 ft or less. .MON NIGHT...NE winds less than 10 kt. Seas 2 ft or less. Caribbean N of 15N between 72W and 85W .THIS AFTERNOON...E winds less than 10 kt. Seas 2 ft or less. .TONIGHT...E winds less than 10 kt. Seas 2 ft or less. .FRI...S of 18N, E winds 10 to 15 kt. Elsewhere, Variable winds less than 10 kt, becoming SE less than 10 kt in the afternoon. Seas 3 to 4 ft. .FRI NIGHT...E winds 10 to 15 kt S of 18N, and E less than 10 kt elsewhere. Seas 3 to 4 ft. .SAT...E winds 10 to 15 kt. Seas 3 to 4 ft. .SAT NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. .SUN...E winds 10 to 15 kt. Seas 3 to 5 ft. .SUN NIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft. .MON...E winds 10 to 15 kt. Seas 3 to 5 ft. .MON NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. Caribbean from 11N to 15N W of 72W .THIS AFTERNOON...E winds less than 10 kt. Seas 2 ft or less. .TONIGHT...Within 90 nm of coast of Colombia, NE winds 10 to 20 kt. Elsewhere, NE winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 2 ft or less, building to 3 to 4 ft after midnight. .FRI...NE winds 10 to 20 kt. Seas 3 to 5 ft. .FRI NIGHT...E winds 15 to 25 kt within 90 nm of coast of Colombia, and NE 10 to 20 kt elsewhere. Seas 4 to 6 ft. .SAT...E winds 10 to 20 kt. Seas 4 to 6 ft. .SAT NIGHT...NE winds 10 to 20 kt. Seas 4 to 6 ft. .SUN...E winds 10 to 20 kt. Seas 4 to 6 ft. .SUN NIGHT...NE winds 10 to 20 kt. Seas 4 to 6 ft. .MON...E winds 10 to 20 kt. Seas 4 to 6 ft. .MON NIGHT...NE winds 10 to 20 kt. Seas 4 to 6 ft. SW Caribbean S of 11N .THIS AFTERNOON...Variable winds less than 10 kt. Seas 2 ft or less. .TONIGHT...N winds less than 10 kt. Seas 2 ft or less. .FRI...N winds less than 10 kt in the morning, becoming variable winds less than 10 kt. Seas 2 ft or less. .FRI NIGHT...N winds less than 10 kt. Seas 2 to 3 ft. .SAT...N winds less than 10 kt. Seas 3 to 5 ft. .SAT NIGHT...N winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 3 to 5 ft. .SUN...NE winds 10 to 15 kt. Seas 3 to 5 ft. .SUN NIGHT...N winds less than 10 kt. Seas 3 to 5 ft. .MON...N winds less than 10 kt. Seas 3 to 5 ft. .MON NIGHT...Variable winds less than 10 kt, becoming NW less than 10 kt after midnight. Seas 3 to 4 ft. Caribbean between 64W and 72W .THIS AFTERNOON...E winds 10 to 15 kt. Seas 2 ft or less Gulf of Venezuela, and 3 to 5 ft elsewhere. .TONIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft. .FRI...E winds 10 to 15 kt. Seas 3 to 5 ft. .FRI NIGHT...E winds 10 to 20 kt Gulf of Venezuela, and E 10 to 15 kt elsewhere. Seas 3 to 5 ft. .SAT...E winds 10 to 15 kt. Seas 3 to 5 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 20 kt. Seas 4 to 6 ft. .MON...E winds 10 to 20 kt. Seas 4 to 6 ft. .MON NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. Offshore Leeward Islands and adjacent ATLC waters from 15N to 19N W of 55W .THIS AFTERNOON...E winds less than 10 kt. Seas 3 to 5 ft. .TONIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .FRI...E winds less than 10 kt. Seas 4 to 6 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .SAT...E winds 10 to 15 kt. Seas 4 to 6 ft. .SAT NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .SUN...E winds 10 to 15 kt. Seas 4 to 6 ft. .SUN NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. .MON...E winds 10 to 20 kt. Seas 5 to 7 ft. .MON 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 .THIS AFTERNOON...E winds 10 to 15 kt. Seas 4 to 6 ft. .TONIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .FRI...E winds 10 to 15 kt. Seas 4 to 6 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .SAT...E winds 10 to 15 kt. Seas 4 to 6 ft. .SAT NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. .SUN...E winds 10 to 20 kt. Seas 5 to 7 ft. .SUN NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. .MON...E winds 10 to 15 kt. Seas 5 to 7 ft. .MON NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. SYNOPSIS FOR THE SW N ATLC INCLUDING THE BAHAMAS .SYNOPSIS...A surface trough extending NE from central Cuba will move W across the forecast waters through Fri. The trough will combine with strong high pressure to the N to enhance winds and seas E of the Bahamas through this afternoon and between the W Bahamas and Florida on Fri. Winds and seas may be higher in scattered showers and thunderstorms accompanying the trough. ATLC waters from 27N to 31N W of 77W .THIS AFTERNOON...E winds 10 to 20 kt. Seas 6 to 8 ft. .TONIGHT...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 4 to 6 ft. .SAT...E winds 10 to 15 kt. Seas 4 to 6 ft. .SAT NIGHT...E winds 10 to 15 kt. Seas 5 to 6 ft. .SUN...E winds 10 to 15 kt. Seas 5 to 6 ft. .SUN NIGHT...E winds 10 kt. Seas 5 to 6 ft. .MON...E winds 10 kt in the morning, becoming variable winds less than 10 kt. Seas 4 to 5 ft. .MON NIGHT...E winds 10 kt. Seas 4 ft. ATLC WATERS FROM 27N TO 31N BETWEEN 65W AND 77W .THIS AFTERNOON...E winds 10 to 20 kt. Seas 6 to 8 ft. .TONIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. .FRI...E winds 10 to 15 kt. Seas 4 to 6 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .SAT...E winds 10 to 15 kt. Seas 5 to 7 ft. .SAT NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. .SUN...E winds 10 to 15 kt. Seas 6 to 7 ft. .SUN NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. .MON...E winds 10 kt. Seas 5 to 7 ft. .MON NIGHT...SE winds less than 10 kt. Seas 5 to 7 ft. Bahamas N of 22N .THIS AFTERNOON...E winds 10 to 15 kt, shifting to SE in the afternoon. Seas 3 to 5 ft. .TONIGHT...SE winds less than 10 kt. Seas 3 to 4 ft. .FRI...SE winds less than 10 kt. Seas 3 to 4 ft. .FRI NIGHT...E winds less than 10 kt. Seas 3 ft. .SAT...E winds less than 10 kt. Seas 3 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 less than 10 kt. Seas 3 to 4 ft. .MON...E winds less than 10 kt. Seas 3 to 4 ft. .MON NIGHT...E winds less than 10 kt. Seas 3 ft. ATLC waters from 22N to 27N between 65W and the Bahamas .THIS AFTERNOON...SE winds 10 kt. Seas 5 to 7 ft. .TONIGHT...W of 70W, Variable winds less than 10 kt, becoming E 10 kt after midnight. Elsewhere, Variable winds less than 10 kt. Seas 4 to 6 ft. .FRI...W of 70W, E winds 10 kt. Elsewhere, E winds 10 kt in the morning, becoming variable winds less than 10 kt. Seas 4 to 5 ft. .FRI NIGHT...E winds 10 kt. Seas 4 ft. .SAT...E winds 10 to 15 kt. Seas 4 to 5 ft. .SAT NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .SUN...E winds 10 to 15 kt. Seas 4 to 6 ft. .SUN NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. .MON...SE winds 10 kt. Seas 5 to 7 ft. .MON NIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft. ATLC waters S of 22N W of 65W .THIS AFTERNOON...SE winds less than 10 kt. Seas 3 to 5 ft. .TONIGHT...E winds less than 10 kt. Seas 3 to 4 ft. .FRI...E winds less than 10 kt. Seas 3 to 4 ft. .FRI NIGHT...E winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 3 to 4 ft. .SAT...E winds less than 10 kt. Seas 3 to 4 ft. .SAT NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. .SUN...E winds 10 to 15 kt. Seas 3 to 5 ft. .SUN NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .MON...SE winds 10 to 15 kt. Seas 4 to 6 ft. .MON NIGHT...SE winds 10 to 15 kt. Seas 3 to 5 ft. ATLC waters from 19N to 22N between 55W and 65W .THIS AFTERNOON...Variable winds less than 10 kt. Seas 4 to 5 ft. .TONIGHT...Variable winds less than 10 kt, becoming E less than 10 kt after midnight. Seas 4 to 5 ft. .FRI...E winds 10 kt. Seas 4 to 6 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. .SAT...E winds 10 to 15 kt. Seas 5 to 7 ft. .SAT NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. .SUN...SE winds 10 to 15 kt. Seas 5 to 7 ft. .SUN NIGHT...SE winds 10 to 20 kt. Seas 6 to 8 ft. .MON...SE winds 10 to 20 kt. Seas 6 to 8 ft. .MON NIGHT...SE winds 10 to 20 kt. Seas 6 to 8 ft.