000 FZNT31 KNHC 070315 OFFN20 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 1015 PM EST Mon Mar 6 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...The pressure gradient between a ridge N of the area and the Colombian low will support fresh to strong trades in the south-central Caribbean through tonight. Winds will gradually diminish to below normal basin-wide Tue through Wed night as an Atlantic cold front sinks southward toward the NE Caribbean islands. The cold front is forecast to reach the Greater Antilles on Thu. The front will bring large N swell through the NE Caribbean passages and Tropical N Atlantic waters beginning Thu and lasting into the weekend. NW Caribbean W of 85W .TONIGHT...E winds 10 to 15 kt. Seas 3 ft. .TUE...E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 3 ft. .TUE NIGHT...E winds 10 to 15 kt. Seas 3 ft. .WED...E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 3 to 4 ft. .WED NIGHT...E winds 10 to 15 kt. Seas 3 ft. .THU...E winds 10 to 15 kt. Seas 3 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. .FRI...E winds 10 to 15 kt. Seas 3 to 4 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. .SAT...E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 3 to 4 ft. .SAT NIGHT...E winds 10 to 15 kt. Seas 3 ft. Caribbean N of 15N between 72W and 85W .TONIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. .TUE...S of 18N, E winds 10 to 15 kt. Elsewhere, E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 3 to 5 ft. .TUE NIGHT...S of 18N, E winds less than 10 kt. Elsewhere, E winds less than 10 kt, shifting to NE after midnight. Seas 3 to 5 ft. .WED...S of 18N, E winds less than 10 kt. Elsewhere, E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 3 to 4 ft. .WED NIGHT...NE winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 3 ft. .THU...E winds 10 to 15 kt. Seas 3 to 4 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. .FRI...E winds 10 to 15 kt. Seas 3 to 5 ft. .FRI NIGHT...E winds less than 10 kt. Seas 3 to 4 ft. .SAT...SE winds less than 10 kt. Seas 3 to 4 ft. .SAT NIGHT...E winds less than 10 kt. Seas 3 ft. Caribbean from 11N to 15N W of 72W .TONIGHT...E winds 20 to 30 kt within 90 nm of coast of Colombia, and NE 10 to 20 kt elsewhere. Seas 7 to 10 ft within 90 nm of coast of Colombia, and 6 to 8 ft elsewhere. .TUE...NE winds 15 to 25 kt within 90 nm of coast of Colombia, and NE 10 to 20 kt elsewhere. Seas 6 to 8 ft. .TUE NIGHT...NE winds 10 to 20 kt within 90 nm of coast of Colombia, and NE 10 to 15 kt elsewhere. Seas 5 to 7 ft. .WED...Within 90 nm of coast of Colombia, NE winds 10 to 15 kt. Elsewhere, NE winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 4 to 6 ft. .WED NIGHT...NE winds 10 to 15 kt, diminishing to less than 10 kt after midnight. Seas 3 to 5 ft. .THU...NE winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 3 to 4 ft. .THU NIGHT...NE winds 10 to 15 kt. Seas 3 ft. .FRI...E winds 10 to 15 kt. Seas 3 to 4 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. .SAT...E winds 10 to 15 kt. Seas 3 to 5 ft. .SAT NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. SW Caribbean S of 11N .TONIGHT...NE winds 10 to 20 kt. Seas 6 to 9 ft. .TUE...NE winds 10 to 15 kt. Seas 6 to 9 ft. .TUE NIGHT...NE winds 10 to 15 kt. Seas 5 to 7 ft. .WED...NE winds 10 to 15 kt. Seas 4 to 6 ft. .WED NIGHT...N winds 10 to 15 kt, diminishing to less than 10 kt after midnight. Seas 3 to 5 ft. .THU...NE winds less than 10 kt. Seas 3 to 4 ft. .THU NIGHT...NE winds less than 10 kt. Seas 3 to 4 ft. .FRI...NE winds less than 10 kt. Seas 3 to 4 ft. .FRI NIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft. .SAT...NE winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 4 to 6 ft. .SAT NIGHT...NE winds 10 to 15 kt, diminishing to less than 10 kt after midnight. Seas 3 to 5 ft. Caribbean between 64W and 72W .TONIGHT...E winds 15 to 25 kt Gulf of Venezuela, and E 10 to 15 kt elsewhere. Seas 4 to 6 ft. .TUE...NE winds 10 to 20 kt Gulf of Venezuela, and E 10 to 15 kt elsewhere. Seas 4 to 6 ft. .TUE NIGHT...NE winds 10 to 20 kt Gulf of Venezuela, and E 10 to 15 kt elsewhere. Seas 3 to 5 ft. .WED...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 to 4 ft. .WED NIGHT...NE 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 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. .SAT...E winds 10 to 15 kt. Seas 3 to 5 ft. .SAT 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 less than 10 kt. Seas 4 to 6 ft. .TUE...SE winds less than 10 kt. Seas 3 to 5 ft. .TUE NIGHT...Variable winds less than 10 kt. Seas 3 to 5 ft. .WED...SW winds less than 10 kt. Seas 4 to 6 ft. .WED NIGHT...W winds 10 to 15 kt. Seas 4 to 6 ft. .THU...W winds 10 to 15 kt. Seas 5 to 7 ft. .THU NIGHT...NW winds 10 to 15 kt, diminishing to less than 10 kt after midnight. Seas 6 to 9 ft. .FRI...NW winds less than 10 kt. Seas 6 to 9 ft. .FRI NIGHT...NE winds less than 10 kt. Seas 5 to 7 ft. .SAT...E winds less than 10 kt. Seas 5 to 7 ft. .SAT NIGHT...E winds 10 kt. Seas 6 to 8 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. .TUE...E winds 10 to 15 kt. Seas 5 to 7 ft. .TUE NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .WED...E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 4 to 6 ft. .WED NIGHT...E winds 10 to 15 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. .FRI...NE winds less than 10 kt. Seas 4 to 6 ft. .FRI NIGHT...NE winds 10 to 15 kt. Seas 5 to 7 ft. .SAT...E winds 10 to 15 kt. Seas 5 to 7 ft. .SAT NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. Synopsis for the the SW N Atlantic including the Bahamas .SYNOPSIS...A cold front extends from 24N55W to 25N66W. The front will weaken tonight into early Tue as it moves SE. High pressure is building in east of Florida tonight. Large NW to N swell in the wake of the front will continue to affect the NE waters through Tue. A second cold front will enter the area late Tue, and reach from 30N55W to 26N70W to 28N81W by Wed morning. Gale force winds are expected on both sides of the front Tue night into Wed N of 28N and E of 70W. Behind the front, NW winds will remain fresh to strong through late week. A significant NW to N swell event will follow the front, with seas of 12 to 20 ft covering most of the waters N of 25N and E of 73W by early Wed afternoon. Swell up to 12 ft will reach as far south as 21N by early Thu. Looking ahead, the next cold front is forecast to move off the southeast U.S. coast by Fri night, brining strong winds to waters east of Florida. ATLC waters from 27N to 31N W of 77W .TONIGHT...S winds 10 to 15 kt. Seas 4 to 5 ft. .TUE...W winds 10 to 15 kt. Seas 4 to 5 ft. .TUE NIGHT...N winds 10 to 20 kt. Seas 4 to 6 ft. .WED...NE winds 10 to 20 kt. Seas 6 to 9 ft. .WED NIGHT...NE winds 15 to 20 kt. Seas 7 to 9 ft. .THU...NE winds 10 to 15 kt. Seas 7 to 9 ft. .THU NIGHT...NE winds 10 kt. Seas 6 to 8 ft. .FRI...S winds 10 to 15 kt. Seas 4 to 6 ft. .FRI NIGHT...S winds 10 to 20 kt, shifting to SW 20 to 25 kt after midnight. Seas 5 to 7 ft. .SAT...W winds 15 to 25 kt. Seas 7 to 10 ft. .SAT NIGHT...NW winds 15 to 25 kt. Seas 7 to 10 ft. ATLC waters from 27N to 31N between 65W and 77W ...GALE WARNING... .TONIGHT...NW winds less than 10 kt. Seas 5 to 6 ft W of 70W, and 6 to 9 ft elsewhere. .TUE...W of 70W, W winds 10 to 20 kt. Elsewhere, W winds 10 to 15 kt, increasing to 15 to 25 kt in the afternoon. Seas 4 to 6 ft W of 70W, and 7 to 10 ft elsewhere. .TUE NIGHT...NW winds 15 to 25 kt W of 70W, and W 25 to 35 kt elsewhere. W of 70W, seas 5 to 7 ft, building to 7 to 10 ft after midnight. Elsewhere, seas 8 to 11 ft, building to 9 to 14 ft after midnight. .WED...N winds 15 to 25 kt W of 70W, and NW 20 to 30 kt elsewhere. Seas 8 to 13 ft W of 70W, and 11 to 16 ft elsewhere. .WED NIGHT...N winds 15 to 25 kt. Seas 10 to 15 ft. .THU...N winds 15 to 25 kt. Seas 9 to 14 ft. .THU NIGHT...N winds 10 to 20 kt. Seas 8 to 12 ft. .FRI...N winds 10 to 20 kt. Seas 8 to 11 ft. .FRI NIGHT...NE winds less than 10 kt, becoming S 10 to 20 kt after midnight. Seas 7 to 10 ft. .SAT...SW winds 15 to 25 kt. Seas 8 to 11 ft. .SAT NIGHT...W winds 15 to 25 kt. Seas 9 to 12 ft. Bahamas N of 22N .TONIGHT...E winds less than 10 kt. Seas 3 ft. .TUE...S winds less than 10 kt. Seas 2 ft or less. .TUE NIGHT...N winds less than 10 kt. Seas 2 ft or less. .WED...N winds 10 to 15 kt. Seas 2 ft or less, building to 3 to 4 ft in the afternoon. .WED NIGHT...NE winds 10 to 20 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 4 to 6 ft. .FRI...E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 3 to 5 ft. .FRI NIGHT...E winds less than 10 kt, shifting to SE after midnight. Seas 3 to 5 ft. .SAT...SW winds 10 to 15 kt. Seas 3 to 5 ft. .SAT NIGHT...W winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 3 to 5 ft. ATLC waters from 22N to 27N between 65W and the Bahamas .TONIGHT...NE winds less than 10 kt. Seas 5 to 7 ft. .TUE...NW winds less than 10 kt. Seas 5 to 7 ft. .TUE NIGHT...NW winds 10 to 20 kt. Seas 6 to 8 ft. .WED...N winds 10 to 20 kt W of 70W, and NW 15 to 25 kt elsewhere. Seas 7 to 10 ft. .WED NIGHT...N winds 15 to 25 kt. Seas 8 to 11 ft, building to 9 to 14 ft after midnight. .THU...N winds 10 to 20 kt. Seas 9 to 13 ft. .THU NIGHT...N winds 10 to 20 kt. Seas 8 to 11 ft. .FRI...N 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 in the evening, becoming variable winds less than 10 kt. Seas 7 to 10 ft. .SAT...S winds 10 to 15 kt. Seas 7 to 9 ft. .SAT NIGHT...SW winds 10 to 20 kt. Seas 7 to 9 ft. ATLC waters S of 22N W of 65W .TONIGHT...NE winds 10 to 15 kt, shifting to E after midnight. Seas 3 to 4 ft. .TUE...NE winds less than 10 kt. Seas 3 to 5 ft. .TUE NIGHT...N winds less than 10 kt. Seas 3 to 5 ft. .WED...NW winds less than 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 3 to 5 ft. .WED NIGHT...N winds 10 to 20 kt. Seas 5 to 7 ft. .THU...N winds 10 to 15 kt. Seas 6 to 9 ft. .THU NIGHT...N winds 10 to 15 kt. Seas 6 to 9 ft. .FRI...NE winds less than 10 kt. Seas 5 to 7 ft. .FRI NIGHT...NE winds less than 10 kt. Seas 5 to 7 ft. .SAT...SE winds less than 10 kt in the morning, becoming variable winds less than 10 kt. Seas 4 to 6 ft. .SAT NIGHT...S winds less than 10 kt. Seas 4 to 6 ft. ATLC waters from 19N to 22N between 55W and 65W .TONIGHT...NE winds less than 10 kt in the evening, becoming variable winds less than 10 kt. Seas 5 to 7 ft. .TUE...Variable winds less than 10 kt, becoming SW less than 10 kt in the afternoon. Seas 5 to 7 ft. .TUE NIGHT...W winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 5 to 7 ft. .WED...W winds 10 to 20 kt. Seas 6 to 9 ft. .WED NIGHT...W winds 10 to 20 kt. Seas 7 to 10 ft. .THU...NW winds 10 to 20 kt. Seas 8 to 12 ft. .THU NIGHT...NW winds 10 to 15 kt. Seas 10 to 12 ft. .FRI...NW winds 10 to 15 kt. Seas 8 to 10 ft. .FRI NIGHT...N winds 10 kt. Seas 7 to 9 ft. .SAT...E winds 10 kt. Seas 7 to 10 ft. .SAT NIGHT...E winds 10 kt. Seas 8 to 10 ft.