000 FZNT31 KNHC 071500 OFFN20 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 1000 AM EST Thu Dec 7 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...Strong trades across the central Caribbean will diminish today. Large northerly swell will dominate the Atlc waters through the weekend and propagate SSW through the Caribbean Passages. A strong cold front will reach the Yucatan Channel on Fri night, extend from central Cuba to Honduras on Sat, from eastern Cuba to Nicaragua Sun, and stall from the Windward Passage to near Costa Rica Mon. Strong to gale force winds northerly winds and building seas are expected behind the front. NW Caribbean W of 85W .TODAY...E winds less than 10 kt. Seas 3 to 4 ft. .TONIGHT...SE winds less than 10 kt. Seas 3 to 4 ft. .FRI...S winds less than 10 kt. Seas 3 to 4 ft. .FRI NIGHT...S winds less than 10 kt, becoming W 10 to 20 kt after midnight. Seas 4 to 6 ft. .SAT...NW winds 20 to 30 kt. Seas 7 to 10 ft. .SAT NIGHT...N winds 15 to 25 kt. Seas 8 to 11 ft. .SUN...N winds 15 to 25 kt. Seas 7 to 10 ft. .SUN NIGHT...N winds 10 to 20 kt. Seas 6 to 9 ft. .MON...N winds 10 to 20 kt. Seas 5 to 7 ft. .MON NIGHT...N winds 10 to 15 kt. Seas 4 to 6 ft. Caribbean N of 15N between 72W and 85W .TODAY...E winds 15 to 25 kt S of 18N, and E 10 to 15 kt elsewhere. Seas 6 to 8 ft S of 18N, and 3 to 5 ft elsewhere. .TONIGHT...E winds 10 to 20 kt S of 18N, and E less than 10 kt elsewhere. Seas 4 to 6 ft. .FRI...E winds 10 to 20 kt. Seas 4 to 6 ft. .FRI NIGHT...SE winds 10 to 20 kt. Seas 4 to 6 ft. .SAT...SE winds 10 to 20 kt. Seas 5 to 7 ft. .SAT NIGHT...NE winds 15 to 25 kt. Seas 6 to 9 ft. .SUN...N winds 15 to 25 kt. Seas 6 to 9 ft. .SUN NIGHT...N winds 15 to 25 kt. Seas 7 to 10 ft. .MON...N winds 15 to 25 kt. Seas 6 to 9 ft. .MON NIGHT...N winds 10 to 20 kt. Seas 5 to 7 ft. Caribbean from 11N to 15N W of 72W ...GALE CONDITIONS POSSIBLE SUN... .TODAY...E winds 15 to 25 kt. Seas 7 to 10 ft. .TONIGHT...E winds 20 to 25 kt within 90 nm of coast of Colombia, and E 10 to 20 kt elsewhere. Seas 6 to 9 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. .SAT...E winds 10 to 20 kt. Seas 5 to 7 ft. .SAT NIGHT...NE winds 10 to 20 kt. Seas 5 to 7 ft. .SUN...NE winds 10 to 20 kt. Seas 6 to 9 ft. .SUN NIGHT...NE winds 20 to 30 kt. Seas 7 to 10 ft. .MON...NE winds 20 to 30 kt. Seas 7 to 10 ft. .MON NIGHT...NE winds 15 to 25 kt. Seas 6 to 9 ft. SW Caribbean S of 11N .TODAY...S winds 10 to 15 kt, shifting to W in the afternoon. Seas 5 to 7 ft. .TONIGHT...N winds less than 10 kt, shifting to S after midnight. Seas 5 to 7 ft. .FRI...SW winds less than 10 kt. Seas 4 to 6 ft. .FRI NIGHT...Variable winds less than 10 kt. Seas 3 to 5 ft. .SAT...W winds less than 10 kt. Seas 3 to 5 ft. .SAT NIGHT...NW winds 10 to 15 kt. Seas 4 to 6 ft. .SUN...N winds 10 to 20 kt. Seas 6 to 8 ft. .SUN NIGHT...N winds 10 to 20 kt. Seas 6 to 9 ft. .MON...N winds 10 to 20 kt. Seas 7 to 10 ft. .MON NIGHT...N winds 10 to 20 kt. Seas 7 to 10 ft. Caribbean between 64W and 72W .TODAY...E winds 15 to 25 kt Gulf of Venezuela, and E 10 to 20 kt elsewhere. Seas 5 to 7 ft. .TONIGHT...E winds 15 to 25 kt Gulf of Venezuela, and E 10 to 20 kt elsewhere. Seas 3 to 5 ft Gulf of Venezuela, and 5 to 7 ft elsewhere. .FRI...E winds 10 to 20 kt. Seas 3 to 5 ft Gulf of Venezuela, and 6 to 8 ft elsewhere. .FRI NIGHT...E winds 15 to 25 kt Gulf of Venezuela, and E 10 to 20 kt elsewhere. Seas 4 to 6 ft Gulf of Venezuela, and 6 to 8 ft elsewhere. .SAT...E winds 10 to 20 kt. Seas 6 to 8 ft. .SAT NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. .SUN...E winds 10 to 15 kt. Seas 5 to 7 ft. .SUN NIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. .MON...E winds 10 kt. Seas 3 to 5 ft. .MON NIGHT...E winds less than 10 kt. Seas 3 to 4 ft. Offshore Leeward Islands and adjacent ATLC waters from 15N to 19N W of 55W .TODAY...E winds 10 to 20 kt. Seas 7 to 10 ft. .TONIGHT...E winds 10 to 20 kt. Seas 7 to 10 ft. .FRI...E winds 10 to 20 kt. Seas 7 to 10 ft. .FRI NIGHT...E winds 10 to 20 kt. Seas 7 to 10 ft. .SAT...E winds 10 to 20 kt. Seas 7 to 10 ft. .SAT NIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft. .SUN...E winds 10 to 15 kt. Seas 5 to 7 ft. .SUN NIGHT...NE winds 10 to 15 kt. Seas 5 to 7 ft. .MON...E winds 10 kt. Seas 4 to 6 ft. .MON NIGHT...E winds 10 kt. Seas 4 to 6 ft. Offshore Windward Islands and adjacent ATLC waters from 07N to 15N W of 55W .TODAY...E winds 10 to 15 kt. Seas 6 to 8 ft. .TONIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft. .FRI...E winds 10 to 20 kt. Seas 6 to 9 ft. .FRI NIGHT...E winds 10 to 20 kt. Seas 7 to 10 ft. .SAT...E winds 10 to 20 kt. Seas 7 to 10 ft. .SAT NIGHT...NE winds 10 to 20 kt. Seas 6 to 9 ft. .SUN...NE winds 10 to 15 kt. Seas 5 to 7 ft. .SUN NIGHT...NE winds 10 to 15 kt. Seas 5 to 7 ft. .MON...E winds less than 10 kt. Seas 4 to 6 ft. .MON NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. SYNOPSIS FOR THE SW N ATLC INCLUDING THE BAHAMAS .SYNOPSIS...Large northerly swell will dominate the Atlc waters E of 72W through the weekend. A cold front off NE Florida and the NW waters will stall from 31N75W to central Florida through Fri. The front will begin to move SE across the Gulf of Mexico late Fri and extend from 31N79W to Sarasota, Florida Sat morning, then reach from 31N68W to E Cuba Sun morning, and from 28N65W to NW Haiti Mon morning, where it will begin to stall. Fresh to strong N winds are expected N of the front this weekend. ATLC waters from 27N to 31N W of 77W .TODAY...NW winds 10 to 15 kt, shifting to NE in the afternoon. Seas 5 to 7 ft. .TONIGHT...SE winds less than 10 kt, shifting to S after midnight. Seas 6 to 8 ft. .FRI...SW winds 10 to 20 kt. Seas 6 to 7 ft. .FRI NIGHT...SW winds 10 to 20 kt. Seas 6 to 8 ft. .SAT...W winds 15 to 25 kt. Seas 6 to 9 ft. .SAT NIGHT...NW winds 20 to 25 kt. Seas 8 to 10 ft. .SUN...NW winds 15 to 20 kt. Seas 6 to 9 ft. .SUN NIGHT...NW winds 10 to 15 kt. Seas 5 to 7 ft. .MON...NW winds 10 to 15 kt. Seas 3 to 5 ft. .MON NIGHT...W winds 10 to 20 kt. Seas 4 to 6 ft. ATLC WATERS FROM 27N TO 31N BETWEEN 65W AND 77W .TODAY...S winds 10 to 15 kt. Seas 6 to 8 ft. .TONIGHT...S winds 10 to 15 kt. Seas 6 to 7 ft. .FRI...S winds 10 to 20 kt. Seas 6 to 7 ft. .FRI NIGHT...S winds 15 to 25 kt. Seas 6 to 8 ft. .SAT...S winds 15 to 25 kt. Seas 7 to 10 ft. .SAT NIGHT...SW winds 15 to 25 kt. Seas 7 to 10 ft. .SUN...NW winds 10 to 20 kt. Seas 7 to 10 ft. .SUN NIGHT...N winds 10 to 20 kt. Seas 6 to 9 ft. .MON...N winds 10 to 20 kt. Seas 6 to 8 ft. .MON NIGHT...N winds 10 to 15 kt, shifting to NW after midnight. Seas 5 to 7 ft. Bahamas N of 22N .TODAY...SE winds 10 to 20 kt. Seas 3 to 5 ft. .TONIGHT...SE winds 10 to 20 kt. Seas 3 to 5 ft. .FRI...SE winds 10 to 20 kt. Seas 3 to 5 ft. .FRI NIGHT...S winds 10 to 20 kt. Seas 3 to 5 ft. .SAT...S winds 10 to 15 kt. Seas 3 to 5 ft. .SAT NIGHT...NW winds 10 to 20 kt. Seas 4 to 6 ft. .SUN...N winds 15 to 25 kt. Seas 4 to 6 ft. .SUN NIGHT...N winds 10 to 20 kt. Seas 4 to 6 ft. .MON...N winds 10 to 20 kt. Seas 4 to 6 ft. .MON NIGHT...N winds 10 to 15 kt. Seas 3 to 5 ft. ATLC waters from 22N to 27N between 65W and the Bahamas .TODAY...SE winds 10 to 15 kt. Seas 7 to 9 ft. .TONIGHT...SE winds 10 to 20 kt. Seas 7 to 9 ft. .FRI...SE winds 10 to 20 kt. Seas 7 to 9 ft. .FRI NIGHT...SE winds 15 to 20 kt. Seas 7 to 9 ft. .SAT...SE winds 10 to 20 kt. Seas 7 to 9 ft. .SAT NIGHT...S winds 10 to 20 kt. Seas 6 to 8 ft. .SUN...S winds 10 to 20 kt. Seas 6 to 8 ft. .SUN NIGHT...N winds 10 to 20 kt. Seas 6 to 8 ft. .MON...NE winds 10 to 20 kt. Seas 6 to 9 ft. .MON NIGHT...NE winds 10 to 20 kt. Seas 6 to 8 ft. ATLC waters S of 22N W of 65W .TODAY...E winds 10 to 20 kt. Seas 6 to 9 ft. .TONIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft. .FRI...E winds 10 to 20 kt. Seas 6 to 9 ft. .FRI NIGHT...SE winds 10 to 20 kt. Seas 6 to 8 ft. .SAT...SE winds 10 to 20 kt. Seas 6 to 8 ft. .SAT NIGHT...SE winds 10 to 15 kt. Seas 5 to 7 ft. .SUN...SE winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 4 to 6 ft. .SUN NIGHT...E winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 4 to 6 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. ATLC waters from 19N to 22N between 55W and 65W .TODAY...E winds 15 to 20 kt. Seas 9 to 12 ft. .TONIGHT...E winds 15 to 20 kt. Seas 9 to 10 ft. .FRI...E winds 15 to 20 kt. Seas 9 to 10 ft. .FRI NIGHT...E winds 20 kt. Seas 9 to 10 ft. .SAT...E winds 15 to 20 kt. Seas 9 to 10 ft. .SAT NIGHT...E winds 15 to 20 kt. Seas 8 to 9 ft. .SUN...E winds 10 to 15 kt. Seas 6 to 8 ft. .SUN NIGHT...NE winds 10 to 15 kt. Seas 6 ft. .MON...E winds 10 kt. Seas 5 to 6 ft. .MON NIGHT...SE winds less than 10 kt. Seas 5 to 6 ft.