000 FZNT31 KNHC 180941 OFFN20 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 441 AM EST Mon Dec 18 2023 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...A cold front is moving SE across the western Caribbean, extending from eastern Cuba to the SE coast of Nicaragua. Fresh to strong NW winds follow the front. The front will reach from the E coast of Cuba to NE Costa Rica Mon evening, and from central Hispaniola to 10N80W Wed evening before dissipating across the Caribbean. Fresh to strong northerly winds and seas to 9 ft are expected in the wake of the front through Wed. High pressure will build SE across the western Atlantic Wed night through Fri to produce fresh to strong NE winds across much of the Caribbean basin. NW Caribbean W of 85W .TODAY...NW winds 10 to 20 kt. Seas 6 to 9 ft. .TONIGHT...N winds 10 to 20 kt. Seas 5 to 7 ft. .TUE...N winds 10 to 15 kt. Seas 5 to 7 ft. .TUE NIGHT...NE winds 10 to 20 kt. Seas 5 to 7 ft. .WED...NE winds 10 to 15 kt. Seas 5 to 7 ft. .WED NIGHT...NE winds 10 to 15 kt. Seas 5 to 7 ft. .THU...NE winds 10 to 15 kt. Seas 5 to 7 ft. .THU NIGHT...NE winds 10 to 15 kt. Seas 5 to 7 ft. .FRI...E winds 10 to 15 kt. Seas 6 to 8 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. Caribbean N of 15N between 72W and 85W .TODAY...N winds 10 to 20 kt. Seas 5 to 7 ft. .TONIGHT...N winds 10 to 20 kt. Seas 5 to 7 ft. .TUE...N winds 10 to 20 kt. Seas 5 to 7 ft. .TUE NIGHT...NE winds 15 to 25 kt. Seas 6 to 8 ft. .WED...NE winds 10 to 20 kt. Seas 6 to 8 ft. .WED NIGHT...NE winds 10 to 20 kt. Seas 5 to 7 ft. .THU...NE winds 10 to 20 kt. Seas 5 to 7 ft. .THU NIGHT...NE winds 10 to 20 kt. Seas 5 to 7 ft. .FRI...NE winds 10 to 20 kt. Seas 5 to 7 ft. .FRI NIGHT...NE winds 10 to 20 kt. Seas 5 to 7 ft. Caribbean from 11N to 15N W of 72W .TODAY...E winds 10 to 15 kt within 90 nm of coast of Colombia, and N 15 to 25 kt elsewhere. Seas 4 to 5 ft within 90 nm of coast of Colombia, and 6 to 8 ft elsewhere. .TONIGHT...NE winds 10 kt within 90 nm of coast of Colombia, and N 15 to 25 kt elsewhere. Seas 4 to 5 ft within 90 nm of coast of Colombia, and 6 to 8 ft elsewhere. .TUE...NE winds 10 kt within 90 nm of coast of Colombia, and N 15 to 25 kt elsewhere. Seas 4 to 5 ft within 90 nm of coast of Colombia, and 6 to 9 ft elsewhere. .TUE NIGHT...NE winds 10 to 15 kt within 90 nm of coast of Colombia, and NE 15 to 25 kt elsewhere. Seas 5 to 6 ft within 90 nm of coast of Colombia, and 6 to 9 ft elsewhere. .WED...NE winds 10 to 20 kt. Seas 6 to 9 ft. .WED NIGHT...NE winds 10 to 20 kt. Seas 6 to 8 ft. .THU...NE winds 10 to 20 kt. Seas 6 to 8 ft. .THU NIGHT...NE winds 10 to 20 kt. Seas 6 to 8 ft. .FRI...NE winds 10 to 20 kt. Seas 6 to 8 ft. .FRI NIGHT...E winds 15 to 25 kt. Seas 6 to 9 ft. SW Caribbean S of 11N .TODAY...N winds 10 to 20 kt. Seas 5 to 7 ft. .TONIGHT...N winds 10 to 20 kt. Seas 6 to 9 ft. .TUE...N winds 10 to 20 kt. Seas 6 to 9 ft. .TUE NIGHT...N winds 15 to 25 kt. Seas 7 to 10 ft. .WED...N winds 10 to 20 kt. Seas 6 to 9 ft. .WED NIGHT...N winds 10 to 15 kt. Seas 6 to 8 ft. .THU...N winds 10 to 15 kt. Seas 6 to 7 ft. .THU NIGHT...NE winds 10 to 15 kt. Seas 6 to 7 ft. .FRI...NE winds 10 to 15 kt. Seas 6 to 8 ft. .FRI NIGHT...NE winds 10 to 20 kt. Seas 6 to 9 ft. Caribbean between 64W and 72W .TODAY...E winds 10 to 20 kt. Seas 3 to 4 ft Gulf of Venezuela, and 5 to 7 ft elsewhere. .TONIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft Gulf of Venezuela, and 5 to 7 ft elsewhere. .TUE...E winds 10 to 15 kt. Seas 3 to 4 ft Gulf of Venezuela, and 4 to 6 ft elsewhere. .TUE NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .WED...NE winds 10 to 15 kt. Seas 4 to 5 ft. .WED NIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. .THU...NE winds 10 to 15 kt. Seas 5 to 7 ft. .THU NIGHT...NE winds 10 to 20 kt. Seas 5 to 7 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. Offshore Leeward Islands and adjacent ATLC waters from 15N to 19N W of 55W .TODAY...NE winds 10 to 20 kt. Seas 7 to 10 ft. .TONIGHT...NE winds 10 to 15 kt. Seas 7 to 10 ft. .TUE...NE winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 7 to 10 ft. .TUE NIGHT...E winds less than 10 kt. Seas 7 to 10 ft. .WED...Variable winds less than 10 kt. Seas 6 to 9 ft. .WED NIGHT...NE winds less than 10 kt. Seas 6 to 9 ft. .THU...NE winds less than 10 kt. Seas 6 to 9 ft. .THU NIGHT...NE winds less than 10 kt. Seas 6 to 8 ft. .FRI...E winds less than 10 kt. Seas 6 to 8 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 6 to 8 ft. Offshore Windward Islands and adjacent ATLC waters from 07N to 15N W of 55W .TODAY...E winds 10 to 15 kt. Seas 5 to 7 ft. .TONIGHT...NE winds 10 to 15 kt. Seas 5 to 7 ft. .TUE...E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 5 to 7 ft. .TUE NIGHT...E winds less than 10 kt. Seas 6 to 8 ft. .WED...E winds less than 10 kt. Seas 6 to 8 ft. .WED NIGHT...E winds 10 to 15 kt. Seas 6 to 8 ft. .THU...E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 6 to 8 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. .FRI...E winds 10 to 15 kt. Seas 5 to 7 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. Synopsis for the the SW N Atlantic including the Bahamas .SYNOPSIS...A western Atlantic cold front extends through 31N73W to 24N75W to eastern Cuba along 77W. SE to S gale-force winds are ahead of the front N of 26N and E of front to 68W. Behind the front, NW gales are N of 29.5N. Scattered strong thunderstorms continue along and ahead of the cold front to 72W. Gales ahead of the front will persist through Mon night while gales behind the front are expected to move N of the area this morning. The front is expected to reach from 31N69W to the E coast of Cuba by Mon evening, from 31N61W to the N coast of Hispaniola near 19N70W by Wed evening, and from 28N55W to eastern Hispaniola by Thu evening. Strong high pressure will build into the western Atlantic behind the front Tue night through early Thu to produce fresh to strong winds. ATLC waters from 27N to 31N W of 77W .TODAY...W winds 15 to 25 kt. Seas 11 to 16 ft, subsiding to 8 to 13 ft in the afternoon. .TONIGHT...NW winds 15 to 25 kt. Seas 8 to 11 ft. .TUE...N winds 15 to 20 kt. Seas 8 to 11 ft. .TUE NIGHT...NE winds 15 to 20 kt. Seas 8 to 10 ft. .WED...NE winds 10 to 20 kt. Seas 8 to 10 ft. .WED NIGHT...NE winds 15 to 20 kt. Seas 8 to 9 ft. .THU...NE winds 10 to 15 kt. Seas 8 to 9 ft. .THU NIGHT...NE winds 10 to 15 kt. Seas 8 to 9 ft. .FRI...NE winds 10 to 15 kt. Seas 8 to 10 ft. .FRI NIGHT...NE winds 10 to 15 kt. Seas 7 to 9 ft. ATLC waters from 27N to 31N between 65W and 77W ...GALE WARNING... .TODAY...W of 70W, W winds 15 to 25 kt, diminishing to 10 to 15 kt in the afternoon. Elsewhere, SE to S winds 25 to 35 kt. Seas 13 to 18 ft. .TONIGHT...W winds 10 to 20 kt W of 70W, and S 20 to 30 kt elsewhere. Seas 10 to 15 ft W of 70W, and 12 to 17 ft elsewhere. .TUE...NW winds 10 to 20 kt. Seas 9 to 13 ft W of 70W, and 11 to 16 ft elsewhere. .TUE NIGHT...N winds 15 to 25 kt W of 70W, and NW 15 to 25 kt elsewhere. Seas 10 to 13 ft. .WED...N winds 15 to 25 kt. Seas 10 to 15 ft. .WED NIGHT...N winds 15 to 25 kt. Seas 10 to 15 ft. .THU...N winds 15 to 20 kt. Seas 11 to 16 ft. .THU NIGHT...N winds 15 to 20 kt. Seas 11 to 16 ft. .FRI...N winds 10 to 15 kt. Seas 10 to 15 ft. .FRI NIGHT...N winds 10 to 15 kt. Seas 9 to 11 ft. Bahamas N of 22N .TODAY...NW winds 10 to 20 kt. Seas 5 to 7 ft. .TONIGHT...NW winds 10 to 15 kt. Seas 4 to 6 ft. .TUE...N winds 10 to 20 kt. Seas 4 to 6 ft. .TUE NIGHT...NE winds 15 to 25 kt. Seas 5 to 7 ft. .WED...NE winds 10 to 20 kt. Seas 6 to 9 ft. .WED NIGHT...NE winds 15 to 25 kt. Seas 6 to 9 ft. .THU...NE winds 10 to 20 kt. Seas 6 to 8 ft. .THU NIGHT...NE winds 10 to 20 kt. Seas 5 to 7 ft. .FRI...NE winds 10 to 20 kt. Seas 5 to 7 ft. .FRI NIGHT...NE winds 10 to 15 kt. Seas 5 to 7 ft. ATLC waters from 22N to 27N between 65W and the Bahamas ...GALE WARNING... .TODAY...W of 70W, SW winds 15 to 25 kt, shifting to W 10 to 15 kt in the afternoon. Elsewhere, SE to S winds 25 to 35 kt. Seas 9 to 14 ft. .TONIGHT...S winds 10 to 20 kt, shifting to NE after midnight. Seas 8 to 12 ft. .TUE...NE winds 10 to 15 kt. Seas 8 to 12 ft. .TUE NIGHT...N winds 15 to 25 kt W of 70W, and N 10 to 20 kt elsewhere. Seas 8 to 11 ft. .WED...N winds 15 to 25 kt. Seas 10 to 14 ft. .WED NIGHT...N winds 15 to 25 kt. Seas 11 to 14 ft. .THU...N winds 15 to 20 kt. Seas 11 to 13 ft. .THU NIGHT...N winds 10 to 15 kt. Seas 10 to 12 ft. .FRI...NE winds 10 to 15 kt. Seas 10 to 12 ft. .FRI NIGHT...NE winds 10 to 15 kt. Seas 10 to 11 ft. ATLC waters S of 22N W of 65W .TODAY...SE winds 10 to 20 kt. Seas 6 to 9 ft. .TONIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft. .TUE...NE winds 10 to 20 kt. Seas 6 to 9 ft. .TUE NIGHT...NE winds 10 to 20 kt. Seas 6 to 9 ft. .WED...NE winds 10 to 20 kt. Seas 7 to 10 ft. .WED NIGHT...NE winds 10 to 20 kt. Seas 8 to 11 ft. .THU...NE winds 10 to 20 kt. Seas 8 to 11 ft. .THU NIGHT...NE winds 10 to 20 kt. Seas 7 to 10 ft. .FRI...NE winds 10 to 20 kt. Seas 7 to 10 ft. .FRI NIGHT...NE winds 10 to 15 kt. Seas 6 to 9 ft. ATLC waters from 19N to 22N between 55W and 65W .TODAY...E winds 15 to 20 kt. Seas 9 to 12 ft. .TONIGHT...NE winds 10 to 20 kt. Seas 9 to 13 ft. .TUE...NE winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 9 to 13 ft. .TUE NIGHT...NE winds less than 10 kt. Seas 9 to 13 ft. .WED...NW winds less than 10 kt. Seas 10 to 11 ft. .WED NIGHT...NW winds 10 kt. Seas 9 to 10 ft. .THU...NW winds less than 10 kt. Seas 8 to 10 ft. .THU NIGHT...N winds 10 to 15 kt. Seas 8 to 11 ft. .FRI...NE winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 7 to 10 ft. .FRI NIGHT...NE winds less than 10 kt. Seas 8 to 10 ft.