000 FZNT31 KNHC 220310 OFFN20 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 1010 PM EST Sun Nov 21 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 Mon. A cold front will reach the Yucatan Channel by Mon evening, and extend from eastern Cuba to eastern Honduras by late Tue. Fresh to locally strong N to NE winds and building seas are expected across the western Caribbean, the Windward Passage and Mona Passage likely through Thu as high pressure builds N of the area in the wake of the front. NW Caribbean W of 85W .TONIGHT...Variable winds less than 10 kt. Seas 3 to 4 ft. .MON...N winds less than 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 3 to 4 ft. .MON NIGHT...N winds 10 to 15 kt. Seas 3 to 5 ft. .TUE...N winds 10 to 20 kt. Seas 4 to 6 ft. .TUE NIGHT...NE winds 10 to 20 kt. Seas 5 to 7 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 3 to 5 ft. .FRI...NE winds 10 to 15 kt. Seas 3 to 5 ft. .FRI NIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft. Caribbean N of 15N between 72W and 85W .TONIGHT...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, becoming NW less than 10 kt in the afternoon. Seas 3 ft. .MON NIGHT...S of 18N, N winds less than 10 kt. Elsewhere, NW winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 2 ft or less, building to 3 ft after midnight. .TUE...NE winds less than 10 kt S of 18N, and N 10 to 20 kt elsewhere. Seas 3 to 4 ft. .TUE NIGHT...NE winds 10 to 20 kt. Seas 3 to 4 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 15 kt. Seas 3 to 5 ft. .FRI...NE winds 10 to 15 kt. Seas 3 to 5 ft. .FRI NIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft. Caribbean from 11N to 15N W of 72W .TONIGHT...NE winds 15 to 20 kt within 90 nm of coast of Colombia, and NE 10 to 15 kt elsewhere. Seas 4 to 6 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, increasing to 10 to 15 kt after midnight. 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 4 ft. .THU NIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. .FRI...NE winds 10 to 15 kt. Seas 3 to 5 ft. .FRI NIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft. SW Caribbean S of 11N .TONIGHT...NE winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 4 to 6 ft. .MON...NE winds 10 to 15 kt, shifting to N in the afternoon. 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 to 4 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...NE winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 3 to 5 ft. .THU NIGHT...NE winds 10 to 15 kt, diminishing to less than 10 kt after midnight. Seas 3 to 5 ft. .FRI...N winds less than 10 kt. Seas 3 to 4 ft. .FRI NIGHT...N winds 10 to 15 kt. Seas 3 to 4 ft. Caribbean between 64W and 72W .TONIGHT...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 15 kt. Elsewhere, E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 3 to 4 ft. .MON NIGHT...E winds 10 to 15 kt. Seas 3 ft. .TUE...Gulf of Venezuela, E winds 10 to 15 kt, shifting to NE in the afternoon. Elsewhere, E winds less than 10 kt. Seas 3 ft. .TUE NIGHT...E winds less than 10 kt. Seas 3 ft. .WED...NE winds less than 10 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 4 ft. .THU NIGHT...NE 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. Offshore Leeward Islands and adjacent ATLC waters from 15N to 19N W of 55W .TONIGHT...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 5 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. Seas 3 to 5 ft. .THU NIGHT...NE winds less than 10 kt. Seas 4 to 6 ft. .FRI...E winds less than 10 kt. Seas 5 to 7 ft. .FRI NIGHT...E winds less than 10 kt. Seas 5 to 7 ft. Offshore Windward Islands and adjacent ATLC waters from 07N to 15N W of 55W .TONIGHT...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 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 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 3 to 5 ft. .WED NIGHT...E winds 10 to 15 kt, diminishing to less than 10 kt after midnight. Seas 3 to 5 ft. .THU...E winds less than 10 kt. Seas 3 to 5 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .FRI...E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 4 to 6 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. Synopsis for the the SW N Atlantic including the Bahamas .SYNOPSIS...A shear line extending from 28N65W to 28N79W will weaken as it lifts northward tonight. A strong cold front will move off the coast of northeast Florida by midday Mon. The cold front will reach from near Bermuda to eastern Cuba late on Tue. Fresh to near gale force winds and building seas are forecast on either side of the front beginning early Tue. Gale force N winds are expected just behind the front N of 30N and E of 75W Tue afternoon. The front will be accompanied by scattered showers and thunderstorms. In the wake of the front, high pressure will build near the Carolina coast Wed night through Thu night. ATLC waters from 27N to 31N W of 77W .TONIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft. .MON...SE winds less than 10 kt, becoming W 10 to 20 kt in the afternoon. Seas 4 to 6 ft. .MON NIGHT...NW winds 15 to 25 kt. Seas 5 to 7 ft. .TUE...N winds 20 to 25 kt. Seas 8 to 11 ft. .TUE NIGHT...NE winds 15 to 20 kt. Seas 8 to 11 ft. .WED...NE winds 10 to 20 kt. Seas 6 to 9 ft. .WED NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. .THU...E winds 10 to 15 kt, shifting to NE in the afternoon. Seas 4 to 6 ft. .THU NIGHT...S winds less than 10 kt. Seas 3 to 5 ft. .FRI...W winds 10 to 15 kt. Seas 4 to 6 ft. .FRI NIGHT...NW winds 10 to 20 kt. Seas 5 to 7 ft. ATLC waters from 27N to 31N between 65W and 77W ...GALE WARNING... .TONIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft. .MON...SE winds 10 to 15 kt. Seas 5 to 7 ft. .MON NIGHT...W winds 10 to 20 kt W of 70W, and S 15 to 25 kt elsewhere. Seas 6 to 8 ft. .TUE...NW winds 25 to 35 kt W of 70W, and SW 15 to 25 kt elsewhere. W of 70W, seas 7 to 10 ft, building to 8 to 13 ft in the afternoon. Elsewhere, seas 7 to 10 ft. .TUE NIGHT...N winds 15 to 25 kt. Seas 9 to 14 ft. .WED...N winds 15 to 20 kt. Seas 8 to 12 ft. .WED NIGHT...NE winds 10 to 20 kt. Seas 8 to 11 ft. .THU...N winds 10 to 15 kt. Seas 7 to 10 ft. .THU NIGHT...N winds 10 to 15 kt, shifting to NW after midnight. Seas 6 to 9 ft. .FRI...W winds less than 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 6 to 9 ft. .FRI NIGHT...W winds 10 to 15 kt. Seas 6 to 8 ft. Bahamas N of 22N .TONIGHT...E winds 10 to 15 kt, diminishing to less than 10 kt after midnight. Seas 3 to 5 ft. .MON...SW winds less than 10 kt. Seas 3 to 4 ft. .MON NIGHT...NW winds 10 to 20 kt. Seas 3 to 4 ft. .TUE...N winds 10 to 20 kt. Seas 3 to 5 ft. .TUE NIGHT...N 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 15 kt. Seas 4 to 6 ft. .FRI...E winds 10 to 15 kt, shifting to NE in the afternoon. Seas 3 to 5 ft. .FRI NIGHT...NE winds less than 10 kt. Seas 3 to 4 ft. ATLC waters from 22N to 27N between 65W and the Bahamas .TONIGHT...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 6 to 8 ft. .TUE NIGHT...NW winds 10 to 20 kt. Seas 7 to 10 ft. .WED...N winds 10 to 20 kt. Seas 8 to 11 ft. .WED NIGHT...NE winds 15 to 20 kt. Seas 8 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 8 ft. .FRI...E winds less than 10 kt. Seas 6 to 8 ft. .FRI NIGHT...E winds less than 10 kt. Seas 5 to 7 ft. ATLC waters S of 22N W of 65W .TONIGHT...E winds 10 to 15 kt. 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...S winds less than 10 kt, shifting to SW in the afternoon. Seas 3 to 5 ft. .TUE NIGHT...NW winds 10 to 15 kt. Seas 3 to 5 ft. .WED...N winds 10 to 15 kt. Seas 5 to 7 ft. .WED NIGHT...NE winds 10 to 20 kt. Seas 6 to 9 ft. .THU...NE winds 10 to 20 kt. Seas 6 to 9 ft. .THU NIGHT...NE winds 10 to 20 kt. Seas 6 to 9 ft. .FRI...E winds 10 to 15 kt. Seas 5 to 7 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. ATLC waters from 19N to 22N between 55W and 65W .TONIGHT...E winds 10 kt. Seas 4 to 5 ft. .MON...E winds 10 kt. Seas 4 to 5 ft. .MON NIGHT...E winds 10 kt. Seas 5 to 6 ft. .TUE...SE winds 10 to 15 kt. Seas 5 to 6 ft. .TUE NIGHT...S winds 10 kt. Seas 5 to 6 ft. .WED...SW winds less than 10 kt. Seas 4 to 6 ft. .WED NIGHT...Variable winds less than 10 kt, becoming NW less than 10 kt after midnight. Seas 5 to 7 ft. .THU...N winds 10 to 15 kt. Seas 6 to 9 ft. .THU NIGHT...NE winds 10 to 20 kt. Seas 6 to 9 ft. .FRI...NE winds 10 to 15 kt. Seas 8 to 9 ft. .FRI NIGHT...NE winds 10 to 15 kt. Seas 8 to 9 ft.