000 FZNT31 KNHC 212055 OFFN20 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 355 PM EST Sat Dec 21 2024 Marine Weather HF Voice Broadcast for the Tropical N Atlantic from 07N to 19N W of 55W, the N Atlantic from 19N to 31N W of 55W including the 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 W of 55W .SYNOPSIS...Moderate to locally fresh N to NE winds will prevail across the western half of the Caribbean through Sun as a weakening cold front drifts southward across the SE Bahamas and adjacent Atlantic this weekend. Elsewhere, moderate to locally fresh trades are expected over the central and eastern Caribbean. High pressure will build over the eastern United States and western Atlantic early next week. A strengthening pressure gradient between the high pressure and the lingering cold front just N of the Caribbean will lead to fresh to locally strong NE to E winds across much of the basin Sun night through Tue, with winds and seas then gradually diminishing through mid week. NW Caribbean W of 85W .TONIGHT...N winds 10 to 15 kt. Seas 4 to 6 ft. .SUN...N winds 10 to 15 kt. Seas 4 to 6 ft. .SUN NIGHT...NE winds 10 to 15 kt. 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, diminishing to less than 10 kt after midnight. Seas 3 to 4 ft. .TUE...NE winds less than 10 kt. Seas 3 to 4 ft. .TUE NIGHT...NE 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...SE winds less than 10 kt. Seas 3 to 4 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. Caribbean N of 15N between 72W and 85W .TONIGHT...NE winds 10 to 20 kt. Seas 4 to 6 ft. .SUN...NE winds 10 to 20 kt. Seas 4 to 6 ft. .SUN NIGHT...NE winds 10 to 20 kt. Seas 4 to 6 ft. .MON...NE winds 10 to 20 kt. Seas 4 to 6 ft. .MON NIGHT...NE winds 10 to 20 kt. Seas 5 to 7 ft. .TUE...E winds 10 to 20 kt. Seas 4 to 6 ft. .TUE NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .WED...E winds 10 to 15 kt. Seas 4 to 6 ft. .WED NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .THU...E winds 10 to 15 kt. Seas 3 to 5 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. Caribbean from 11N to 15N W of 72W .TONIGHT...NE winds 10 to 20 kt. Seas 5 to 7 ft. .SUN...NE winds 10 to 20 kt. Seas 5 to 7 ft. .SUN NIGHT...NE winds 10 to 20 kt. Seas 5 to 7 ft. .MON...NE winds 10 to 20 kt. Seas 5 to 7 ft. .MON NIGHT...NE winds 10 to 20 kt. Seas 6 to 8 ft. .TUE...NE winds 10 to 20 kt. Seas 6 to 8 ft. .TUE NIGHT...NE 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 15 kt. Seas 5 to 7 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. SW Caribbean S of 11N .TONIGHT...N winds 10 to 15 kt. Seas 4 to 6 ft. .SUN...N winds less than 10 kt. Seas 4 to 6 ft. .SUN NIGHT...N winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 4 to 6 ft. .MON...N winds less than 10 kt. Seas 4 to 6 ft. .MON NIGHT...N winds 10 to 15 kt. Seas 5 to 7 ft. .TUE...NE winds 10 to 15 kt, shifting to N in the afternoon. Seas 5 to 7 ft. .TUE NIGHT...N winds 10 to 15 kt, shifting to NE after midnight. Seas 5 to 7 ft. .WED...NE winds less than 10 kt, shifting to NW in the afternoon. Seas 4 to 6 ft. .WED NIGHT...NW winds less than 10 kt. Seas 4 to 6 ft. .THU...NW winds less than 10 kt. Seas 3 to 5 ft. .THU NIGHT...Variable winds less than 10 kt. Seas 3 to 5 ft. Caribbean between 64W and 72W .TONIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .SUN...E winds 10 to 15 kt. Seas 3 ft Gulf of Venezuela, and 4 to 6 ft elsewhere. .SUN NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. .MON...E winds 10 to 20 kt. Seas 5 to 6 ft. .MON NIGHT...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 5 to 7 ft. .WED...E winds 10 to 20 kt. Seas 5 to 7 ft. .WED NIGHT...E 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. Offshore Leeward Islands and adjacent ATLC waters from 15N to 19N W of 55W .TONIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. .SUN...E winds 10 to 15 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. .TUE...E winds 10 to 20 kt. Seas 5 to 7 ft. .TUE NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. .WED...E winds 10 to 15 kt. Seas 5 to 7 ft. .WED NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. .THU...E winds 10 to 15 kt. Seas 4 to 6 ft. .THU NIGHT...NE winds 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. Seas 5 to 7 ft. .SUN...E winds 10 to 15 kt. Seas 5 to 7 ft. .SUN NIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft. .MON...E winds 10 to 20 kt. Seas 6 to 8 ft. .MON NIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft. .TUE...E winds 10 to 15 kt. Seas 6 to 8 ft. .TUE NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. .WED...E winds 10 to 15 kt. Seas 5 to 7 ft. .WED NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .THU...E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 4 to 6 ft. .THU NIGHT...E winds less than 10 kt. Seas 4 to 6 ft. Synopsis for the the SW N Atlantic including the Bahamas .SYNOPSIS...A cold front extends from 31N65W to the central Bahamas and east-central Cuba this afternoon, and will progress slowly southeastward through early next week. Farther east, a broad ridge is drift eastward, and will produce moderate to fresh S to SE winds along the W periphery of the ridge, generally north of 20N and east of 60W through tonight. South of 20N, moderate to briefly fresh trades will prevail into the middle of next week. An inverted trough is forecast to develop east of the Bahamas Sun then drift westward to along the east coast of Florida by late Mon. A low center is likely to form near the NE Florida coast Mon night and shift northward. A strong high pressure ridge will shift into the western Atlantic during this time. The tightening pressure gradient between the high pressure, the lingering front, and the trough will induce a broad swath of fresh to strong NE to E winds and very rough seas to the east of the Bahamas Mon afternoon, shifting westward across the Bahamas through Tue, then quickly diminish. The cold front is expected to align nearly W to E along about 21N by Tue night before dissipating on Wed. ATLC waters from 27N to 31N W of 77W .TONIGHT...N winds 10 to 15 kt. Seas 5 to 7 ft. .SUN...NE winds 10 to 20 kt. Seas 6 to 8 ft. .SUN NIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft. .MON...E winds 10 to 20 kt. Seas 7 to 10 ft. .MON NIGHT...SE winds 15 to 25 kt, diminishing to 10 to 15 kt after midnight. Seas 7 to 10 ft. .TUE...SW winds less than 10 kt, shifting to N in the afternoon. Seas 7 to 10 ft. .TUE NIGHT...NE winds 10 kt. Seas 6 to 8 ft. .WED...E winds 10 kt. Seas 5 to 6 ft. .WED NIGHT...NE winds less than 10 kt. Seas 4 to 6 ft. .THU...NE winds 10 to 15 kt. Seas 4 to 6 ft. .THU NIGHT...NE winds 10 to 15 kt. Seas 5 to 7 ft. ATLC waters from 27N to 31N between 65W and 77W .TONIGHT...N winds 10 to 15 kt. Seas 6 to 9 ft. .SUN...NE winds 10 to 15 kt. Seas 6 to 9 ft. .SUN NIGHT...NE winds 10 to 20 kt. Seas 7 to 9 ft. .MON...E winds 15 to 25 kt W of 70W, and NE 10 to 20 kt elsewhere. Seas 7 to 10 ft. .MON NIGHT...E winds 10 to 20 kt. Seas 7 to 10 ft. .TUE...E winds 10 to 15 kt. Seas 6 to 9 ft. .TUE NIGHT...SE winds 10 to 15 kt, diminishing to less than 10 kt after midnight. Seas 5 to 7 ft. .WED...SE winds less than 10 kt. Seas 4 to 6 ft. .WED NIGHT...SE winds less than 10 kt in the evening, becoming variable winds less than 10 kt. Seas 4 to 5 ft. .THU...NE winds less than 10 kt. Seas 4 to 5 ft. .THU NIGHT...N winds 10 to 15 kt. Seas 4 to 6 ft. Bahamas N of 22N .TONIGHT...N winds less than 10 kt. Seas 3 to 5 ft. .SUN...NE winds less than 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 3 to 4 ft. .SUN NIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft. .MON...E winds 10 to 15 kt. Seas 4 to 6 ft. .MON NIGHT...E winds 15 to 25 kt. Seas 6 to 8 ft. .TUE...E winds 15 to 25 kt. Seas 5 to 7 ft. .TUE NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. .WED...E winds 10 to 15 kt. Seas 3 to 5 ft. .WED NIGHT...E winds 10 to 15 kt, diminishing to less than 10 kt after midnight. Seas 3 to 4 ft. .THU...NE winds less than 10 kt. Seas 3 to 4 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. ATLC waters from 22N to 27N between 65W and the Bahamas .TONIGHT...N winds 10 to 15 kt, diminishing to less than 10 kt after midnight. Seas 5 to 7 ft. .SUN...N winds less than 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 5 to 7 ft. .SUN NIGHT...NE winds 10 to 20 kt. Seas 6 to 8 ft. .MON...E winds 15 to 25 kt W of 70W, and NE 15 to 25 kt elsewhere. Seas 7 to 10 ft. .MON NIGHT...E winds 15 to 25 kt. Seas 8 to 12 ft. .TUE...E winds 10 to 20 kt. Seas 8 to 11 ft. .TUE NIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft. .WED...E winds 10 to 15 kt. Seas 6 to 8 ft. .WED NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. .THU...NE winds less than 10 kt. Seas 5 to 6 ft. .THU NIGHT...NE winds less than 10 kt. Seas 5 ft. ATLC waters S of 22N W of 65W .TONIGHT...NE winds 10 to 15 kt, diminishing to less than 10 kt after midnight. Seas 4 to 6 ft. .SUN...NE winds less than 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 3 to 5 ft. .SUN NIGHT...NE winds 10 to 20 kt. Seas 5 to 7 ft. .MON...NE winds 10 to 20 kt. Seas 6 to 8 ft. .MON NIGHT...E winds 10 to 20 kt. Seas 7 to 10 ft. .TUE...E winds 10 to 20 kt. Seas 8 to 11 ft. .TUE NIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft. .WED...E winds 10 to 15 kt. Seas 6 to 8 ft. .WED NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. .THU...E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 4 to 6 ft. .THU NIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. ATLC waters from 19N to 22N between 55W and 65W .TONIGHT...SE winds 10 to 15 kt. Seas 6 to 8 ft. .SUN...SE winds 10 to 15 kt. Seas 6 to 8 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 15 kt. Seas 6 to 8 ft. .TUE...E winds 10 to 15 kt. Seas 6 to 8 ft. .TUE NIGHT...E winds 10 to 15 kt. Seas 6 to 8 ft. .WED...NE winds 10 to 15 kt. Seas 7 ft. .WED NIGHT...NE winds 10 to 15 kt. Seas 6 to 7 ft. .THU...NE winds 10 kt. Seas 6 to 7 ft. .THU NIGHT...NE winds 10 kt. Seas 5 to 6 ft.