000 FZNT31 KNHC 210307 OFFN20 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 1007 PM EST Sat Nov 20 2021 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 Atlantic from 07N to 19N between 55W and 64W .SYNOPSIS...Mainly gentle to moderate trades will prevail across much of the Caribbean Sea through the weekend. A cold front will reach the Yucatan Channel by Mon evening, and extend from eastern Cuba to the Gulf of Honduras by late Tue. Fresh to locally strong winds and building seas are expected behind the front across the western Caribbean, the Windward Passage and Mona Passage through the middle of the upcoming week. NW Caribbean W of 85W .TONIGHT...NE winds less than 10 kt. Seas 3 to 5 ft. .SUN...NE winds less than 10 kt in the morning, becoming variable winds less than 10 kt. Seas 3 to 4 ft. .SUN NIGHT...Variable winds less than 10 kt. Seas 3 ft. .MON...N winds less than 10 kt. Seas 2 ft or less, building to 3 ft in the afternoon. .MON NIGHT...N winds 10 to 15 kt. Seas 3 to 4 ft. .TUE...N winds 10 to 20 kt. Seas 4 to 6 ft. .TUE NIGHT...NE winds 10 to 20 kt. Seas 4 to 6 ft. .WED...NE winds 10 to 15 kt. Seas 4 to 6 ft. .WED NIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. .THU...E winds 10 to 15 kt. Seas 4 to 6 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. Caribbean N of 15N between 72W and 85W .TONIGHT...NE 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. .SUN...S of 18N, E winds 10 to 15 kt. Elsewhere, E winds less than 10 kt in the morning, becoming variable winds less than 10 kt. Seas 3 to 5 ft S of 18N, and 2 ft or less elsewhere. .SUN NIGHT...NE winds 10 to 15 kt S of 18N, and Variable less than 10 kt elsewhere. Seas 3 ft. .MON...S of 18N, NE winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Elsewhere, Variable winds less than 10 kt. Seas 3 ft. .MON NIGHT...N winds less than 10 kt. Seas 2 ft or less. .TUE...N winds 10 to 15 kt. Seas 3 to 4 ft. .TUE NIGHT...NE winds 10 to 20 kt. Seas 3 to 5 ft. .WED...NE winds 10 to 20 kt. Seas 3 to 5 ft. .WED NIGHT...NE winds 10 to 20 kt. Seas 3 to 5 ft. .THU...NE winds 10 to 20 kt. Seas 3 to 5 ft. .THU NIGHT...NE winds 10 to 20 kt. Seas 4 to 6 ft. Caribbean from 11N to 15N W of 72W .TONIGHT...E winds 15 to 20 kt within 90 nm of coast of Colombia, and NE 10 to 20 kt elsewhere. Seas 4 to 6 ft. .SUN...E winds 10 to 20 kt within 90 nm of coast of Colombia, and NE 10 to 15 kt elsewhere. Seas 4 to 6 ft. .SUN NIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft. .MON...NE winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 3 to 5 ft. .MON NIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. .TUE...NE winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 3 to 4 ft. .TUE NIGHT...NE winds less than 10 kt. Seas 3 ft. .WED...NE winds 10 to 15 kt. Seas 3 ft. .WED NIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. .THU...NE winds 10 to 15 kt. Seas 3 to 5 ft. .THU NIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft. SW Caribbean S of 11N .TONIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. .SUN...N winds less than 10 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...N winds less than 10 kt. Seas 3 to 4 ft. .TUE...N winds less than 10 kt. Seas 3 ft. .TUE NIGHT...N winds less than 10 kt. Seas 3 ft. .WED...N winds less than 10 kt. Seas 3 ft. .WED NIGHT...N winds less than 10 kt, shifting to NE after midnight. Seas 3 to 4 ft. .THU...N winds less than 10 kt. Seas 3 to 5 ft. .THU NIGHT...N winds less than 10 kt. Seas 3 to 5 ft. Caribbean between 64W and 72W .TONIGHT...E winds 15 to 20 kt Gulf of Venezuela, and E 10 to 15 kt elsewhere. Seas 3 to 5 ft. .SUN...E winds 10 to 15 kt. Seas 3 to 4 ft. .SUN NIGHT...NE winds 15 to 20 kt Gulf of Venezuela, and E 10 to 15 kt elsewhere. Seas 3 to 4 ft. .MON...Gulf of Venezuela, NE winds 10 to 20 kt. Elsewhere, E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 3 ft. .MON NIGHT...E winds 10 to 15 kt, diminishing to less than 10 kt after midnight. Seas 3 ft. .TUE...E winds less than 10 kt. Seas 3 ft. .TUE NIGHT...E winds less than 10 kt. Seas 2 ft or less. .WED...E winds less than 10 kt. Seas 3 ft in the morning, subsiding to 2 ft or less. .WED NIGHT...NE winds 10 to 15 kt. Seas 3 ft. .THU...NE winds 10 to 15 kt. Seas 3 to 4 ft. .THU NIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft. Offshore Leeward Islands and adjacent ATLC waters from 15N to 19N W of 55W .TONIGHT...E winds 10 to 15 kt, diminishing to less than 10 kt after midnight. Seas 4 to 6 ft. .SUN...E winds less than 10 kt. Seas 3 to 5 ft. .SUN NIGHT...E winds less than 10 kt. Seas 3 to 5 ft. .MON...E winds less than 10 kt. Seas 3 to 5 ft. .MON NIGHT...E winds less than 10 kt. Seas 3 to 4 ft. .TUE...SE winds less than 10 kt. Seas 3 to 5 ft. .TUE NIGHT...SE winds less than 10 kt. Seas 3 to 5 ft. .WED...SE winds less than 10 kt in the morning, becoming variable winds less than 10 kt. Seas 3 to 5 ft. .WED NIGHT...Variable winds less than 10 kt, becoming NE less than 10 kt after midnight. Seas 3 to 5 ft. .THU...Variable winds less than 10 kt, becoming NE less than 10 kt in the afternoon. Seas 3 to 5 ft. .THU NIGHT...NE winds less than 10 kt. Seas 4 to 6 ft. Offshore Windward Islands and adjacent ATLC waters from 07N to 15N W of 55W .TONIGHT...E winds 10 to 15 kt, diminishing to less than 10 kt after midnight. Seas 3 to 5 ft. .SUN...E winds less than 10 kt. Seas 3 to 5 ft. .SUN NIGHT...E winds less than 10 kt. Seas 3 to 5 ft. .MON...E winds less than 10 kt. Seas 3 to 4 ft. .MON NIGHT...E winds less than 10 kt. Seas 3 to 5 ft. .TUE...E winds less than 10 kt. Seas 3 to 5 ft. .TUE NIGHT...E winds less than 10 kt. Seas 3 to 5 ft. .WED...E winds less than 10 kt. Seas 3 to 5 ft. .WED NIGHT...E winds less than 10 kt. Seas 3 to 5 ft. .THU...E winds less than 10 kt. Seas 3 to 5 ft. .THU NIGHT...E winds less than 10 kt. Seas 3 to 5 ft. Synopsis for the the SW N Atlantic including the Bahamas .SYNOPSIS...A stationary front extending 31N64W to near West Palm Beach, Florida will remain over the northern forecast waters through Sun night, before lifting north ahead of a strong cold front that will move off the northeast Florida coast on Mon. Currently, strong high pressure building offshore the southeastern United States combined with the stationary front is creating a tight pressure gradient over the north waters just behind the front. As a result, fresh to strong NE to E winds are expected in the wake of the front through Sun. Looking ahead, winds could reach gale force behind the second front. ATLC waters from 27N to 31N W of 77W .TONIGHT...NE winds 15 to 25 kt. Seas 8 to 12 ft. .SUN...E winds 10 to 20 kt. Seas 6 to 9 ft. .SUN NIGHT...E winds 10 to 15 kt. Seas 6 to 8 ft. .MON...E winds less than 10 kt, becoming NW 10 to 20 kt in the afternoon. Seas 4 to 6 ft. .MON NIGHT...NW winds 10 to 20 kt. Seas 5 to 7 ft. .TUE...N winds 20 to 25 kt. Seas 6 to 9 ft. .TUE NIGHT...NE winds 15 to 20 kt. Seas 7 to 9 ft. .WED...NE winds 10 to 20 kt. Seas 6 to 9 ft. .WED NIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft. .THU...E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 5 to 7 ft. .THU NIGHT...SE winds less than 10 kt. Seas 4 to 6 ft. ATLC waters from 27N to 31N between 65W and 77W .TONIGHT...NE winds 15 to 25 kt W of 70W, and NE 10 to 20 kt elsewhere. Seas 7 to 10 ft. .SUN...E winds 10 to 20 kt. Seas 7 to 10 ft. .SUN NIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft. .MON...SE winds 10 to 15 kt. Seas 5 to 7 ft. .MON NIGHT...SW winds 10 to 20 kt. Seas 6 to 8 ft. .TUE...NW winds 15 to 25 kt. Seas 7 to 10 ft. .TUE NIGHT...N winds 15 to 25 kt. Seas 8 to 12 ft. .WED...N winds 15 to 20 kt. Seas 8 to 11 ft. .WED NIGHT...NE winds 10 to 20 kt. Seas 7 to 10 ft. .THU...NE winds 10 to 15 kt. Seas 6 to 9 ft. .THU NIGHT...N winds 10 to 15 kt, diminishing to less than 10 kt after midnight. Seas 6 to 9 ft. Bahamas N of 22N .TONIGHT...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 less than 10 kt. Seas 3 to 5 ft. .MON...SW winds less than 10 kt. Seas 3 ft. .MON NIGHT...NW winds 10 to 15 kt. Seas 3 to 4 ft. .TUE...N winds 10 to 20 kt. Seas 3 to 5 ft. .TUE NIGHT...NE winds 10 to 20 kt. Seas 4 to 6 ft. .WED...NE winds 10 to 20 kt. Seas 5 to 7 ft. .WED NIGHT...NE winds 10 to 20 kt. Seas 5 to 7 ft. .THU...E winds 10 to 20 kt. Seas 4 to 6 ft. .THU NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. ATLC waters from 22N to 27N between 65W and the Bahamas .TONIGHT...E winds 10 to 15 kt. Seas 6 to 8 ft. .SUN...E winds 10 to 15 kt. Seas 6 to 8 ft. .SUN NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. .MON...SE winds 10 to 15 kt. Seas 5 to 7 ft. .MON NIGHT...S winds 10 to 15 kt. Seas 5 to 6 ft. .TUE...W winds 10 to 20 kt. Seas 5 to 7 ft. .TUE NIGHT...N winds 10 to 20 kt. Seas 6 to 9 ft. .WED...NE winds 10 to 20 kt. Seas 8 to 11 ft. .WED NIGHT...NE winds 15 to 20 kt. Seas 9 to 11 ft. .THU...NE winds 10 to 20 kt. Seas 7 to 10 ft. .THU NIGHT...NE winds 10 to 15 kt. Seas 6 to 9 ft. ATLC waters S of 22N W of 65W .TONIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. .SUN...E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 3 to 5 ft. .SUN NIGHT...E winds 10 to 15 kt, diminishing to less than 10 kt after midnight. Seas 3 to 5 ft. .MON...SE winds less than 10 kt. Seas 3 to 5 ft. .MON NIGHT...S winds less than 10 kt. Seas 3 to 5 ft. .TUE...SW winds less than 10 kt. Seas 3 to 5 ft. .TUE NIGHT...W winds less than 10 kt, shifting to NW after midnight. Seas 3 to 5 ft. .WED...N winds 10 to 20 kt. Seas 4 to 6 ft. .WED NIGHT...NE winds 10 to 20 kt. Seas 6 to 9 ft. .THU...NE winds 10 to 20 kt. Seas 7 to 10 ft. .THU NIGHT...NE winds 10 to 20 kt. Seas 6 to 9 ft. ATLC waters from 19N to 22N between 55W and 65W .TONIGHT...E winds 10 kt. Seas 5 to 6 ft. .SUN...E winds 10 kt. Seas 4 to 6 ft. .SUN NIGHT...E winds 10 kt. Seas 4 to 5 ft. .MON...E winds 10 kt. Seas 4 to 5 ft. .MON NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .TUE...SE winds 10 kt. Seas 4 to 6 ft. .TUE NIGHT...S winds 10 kt. Seas 4 to 6 ft. .WED...SW winds less than 10 kt. Seas 4 to 5 ft. .WED NIGHT...NW winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 5 to 7 ft. .THU...N winds 10 to 20 kt. Seas 6 to 9 ft. .THU NIGHT...NE winds 10 to 20 kt. Seas 6 to 9 ft.