000 FZNT31 KNHC 170336 OFFN20 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 1136 PM EDT Mon Oct 16 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 stationary front extends from east-central Cuba to southern Belize. The front should remain in place through Wed before dissipating Wed night. Fresh NE winds and moderate seas will persist over the northwest Caribbean through Wed as high pressure builds over the area. Looking ahead, a broad area of low pressure located over the central tropical Atlantic about midway between the Windward Islands and western Africa has now a medium chance of tropical cyclone formation trough 48 hours. This system is forecast to approach the waters E of the Leeward Islands late Fri into Sat bringing increasing winds and seas. NW Caribbean W of 85W .OVERNIGHT...N winds 10 to 20 kt. Seas 4 to 6 ft. .TUE...N winds 10 to 20 kt. Seas 5 to 7 ft. .TUE NIGHT...N winds 10 to 15 kt. Seas 5 to 7 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...NE winds 10 to 15 kt. Seas 4 to 6 ft. .THU NIGHT...SE winds less than 10 kt. Seas 3 to 4 ft. .FRI...N winds less than 10 kt. Seas 3 ft. .FRI NIGHT...NE winds less than 10 kt. Seas 3 ft. .SAT...N winds less than 10 kt. Seas 3 to 4 ft. .SAT NIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. Caribbean N of 15N between 72W and 85W .OVERNIGHT...NE winds less than 10 kt S of 18N, and NW 10 to 15 kt elsewhere. Seas 2 ft or less S of 18N, and 3 to 5 ft elsewhere. .TUE...E winds less than 10 kt S of 18N, and NE 10 to 20 kt elsewhere. Seas 3 to 5 ft. .TUE NIGHT...NE winds 10 to 20 kt. Seas 3 to 5 ft. .WED...NE winds 10 to 15 kt. Seas 4 to 6 ft. .WED NIGHT...E winds 10 to 15 kt. Seas 3 to 5 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. .FRI...E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 3 ft. .FRI NIGHT...NE winds less than 10 kt. Seas 3 ft. .SAT...E winds less than 10 kt. Seas 2 ft or less. .SAT NIGHT...NE winds less than 10 kt. Seas 2 ft or less. Caribbean from 11N to 15N W of 72W .OVERNIGHT...NE winds 10 to 15 kt within 90 nm of coast of Colombia, and NE less than 10 kt elsewhere. Seas 2 ft or less. .TUE...Within 90 nm of coast of Colombia, E winds 10 to 15 kt. Elsewhere, NE winds less than 10 kt, shifting to E in the afternoon. Seas 3 ft. .TUE NIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. .WED...E winds 10 to 20 kt. Seas 3 to 5 ft. .WED NIGHT...E winds 10 to 20 kt. Seas 3 to 5 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. Seas 3 to 5 ft. .FRI NIGHT...E winds less than 10 kt. Seas 3 to 4 ft. .SAT...E winds less than 10 kt. Seas 3 to 4 ft. .SAT NIGHT...E winds less than 10 kt. Seas 3 ft. SW Caribbean S of 11N .OVERNIGHT...Variable winds less than 10 kt. Seas 2 ft or less. .TUE...Variable winds less than 10 kt. Seas 2 ft or less. .TUE NIGHT...Variable winds less than 10 kt. Seas 2 ft or less. .WED...Variable winds less than 10 kt. Seas 2 ft or less. .WED NIGHT...Variable winds less than 10 kt, becoming N less than 10 kt after midnight. Seas 2 ft or less, building to 3 ft after midnight. .THU...NE winds less than 10 kt, shifting to SW in the afternoon. Seas 3 to 4 ft. .THU NIGHT...NW winds less than 10 kt. Seas 3 to 4 ft. .FRI...W winds less than 10 kt. Seas 3 to 4 ft. .FRI NIGHT...W winds less than 10 kt. Seas 3 to 4 ft. .SAT...SW winds less than 10 kt. Seas 3 ft. .SAT NIGHT...SW winds less than 10 kt. Seas 3 ft. Caribbean between 64W and 72W .OVERNIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. .TUE...E winds 10 to 15 kt. Seas 3 to 4 ft. .TUE NIGHT...E winds 10 to 20 kt Gulf of Venezuela, and E 10 to 15 kt elsewhere. Seas 3 to 5 ft. .WED...E winds 10 to 15 kt. Gulf of Venezuela, seas 3 ft in the morning, subsiding to 2 ft or less. Elsewhere, seas 3 to 5 ft. .WED NIGHT...E winds 10 to 15 kt. Seas 3 to 5 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. .FRI...E winds 10 to 15 kt. Seas 3 to 5 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 less than 10 kt. Seas 3 to 4 ft. Offshore Leeward Islands and adjacent ATLC waters from 15N to 19N W of 55W ...GALE CONDITIONS POSSIBLE THU NIGHT THROUGH SAT... .OVERNIGHT...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 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 20 kt. Seas 5 to 7 ft. .THU...E winds 10 to 20 kt. Seas 6 to 9 ft. .THU NIGHT...E winds 15 to 25 kt. Seas 7 to 10 ft. .FRI...E winds 25 to 35 kt. Seas 8 to 13 ft. .FRI NIGHT...E winds 25 to 35 kt. Seas 8 to 13 ft. .SAT...SE winds 15 to 25 kt. Seas 8 to 13 ft. .SAT NIGHT...SE winds 10 to 20 kt. Seas 8 to 11 ft, subsiding to 6 to 8 ft after midnight. Offshore Windward Islands and adjacent ATLC waters from 07N to 15N W of 55W ...GALE CONDITIONS POSSIBLE THU THROUGH FRI... .OVERNIGHT...E winds less than 10 kt. Seas 3 to 4 ft. .TUE...E winds 10 to 15 kt. Seas 3 to 4 ft. .TUE NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. .WED...E winds 10 to 15 kt. Seas 3 to 5 ft. .WED NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. .THU...E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 5 to 7 ft. .THU NIGHT...North of 12N, winds 30 to 40 kt. Seas 10 to 15 ft. South of 12N, E winds 10 to 15 kt. Seas 6 to 8 ft, building to 8 to 11 ft after midnight. .FRI...SE winds 10 to 15 kt. Seas 8 to 11 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 7 to 10 ft. .SAT...SE winds 10 to 15 kt. Seas 5 to 7 ft. .SAT NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. Synopsis for the the SW N Atlantic including the Bahamas .SYNOPSIS...A stationary front extends from 31N64W to east-central Cuba. The front will remain in place before dissipating Wed night or Thu. Expect fresh to locally strong winds over waters north of 25N through tonight, on both sides of the front. Winds and seas will diminish into mid week as high pressure builds over the area in the wake of the front. Looking ahead, a broad area of low pressure located over the central tropical Atlantic about midway between the Windward Islands and western Africa has now a medium chance of tropical cyclone formation trough 48 hours. This system is forecast to approach the northern Leeward Islands Fri into Sat, bringing increasing winds and seas. ATLC waters from 27N to 31N W of 77W .OVERNIGHT...NW winds 15 to 20 kt. Seas 6 to 8 ft. .TUE...NW winds 10 to 15 kt. Seas 5 to 7 ft. .TUE NIGHT...N winds less than 10 kt. Seas 4 to 5 ft. .WED...NE winds less than 10 kt. Seas 3 to 4 ft. .WED NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. .THU...E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 3 to 4 ft. .THU NIGHT...SE winds 10 to 15 kt. Seas 3 to 5 ft. .FRI...W winds 10 to 15 kt. Seas 3 to 5 ft. .FRI NIGHT...W winds 10 to 20 kt. Seas 3 to 5 ft. .SAT...W winds 10 to 20 kt. Seas 6 to 8 ft. .SAT NIGHT...NW winds 10 to 20 kt. Seas 6 to 9 ft. ATLC waters from 27N to 31N between 65W and 77W .OVERNIGHT...W winds 10 to 20 kt. Seas 6 to 9 ft. .TUE...W winds 10 to 20 kt. Seas 6 to 9 ft. .TUE NIGHT...NW winds 10 to 15 kt, shifting to N after midnight. Seas 5 to 7 ft. .WED...NE winds 10 to 15 kt W of 70W, and N less than 10 kt elsewhere. Seas 4 to 6 ft. .WED NIGHT...NE winds 10 to 15 kt. Seas 4 to 5 ft. .THU...E winds 10 to 15 kt. Seas 4 to 5 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 4 to 5 ft. .FRI...SE winds 10 to 15 kt. Seas 5 to 7 ft. .FRI NIGHT...S winds 10 to 20 kt. Seas 5 to 7 ft. .SAT...SW winds 10 to 20 kt. Seas 6 to 9 ft. .SAT NIGHT...W winds 10 to 20 kt. Seas 7 to 10 ft. Bahamas N of 22N .OVERNIGHT...NW winds 10 to 15 kt. Seas 3 to 4 ft. .TUE...N winds 10 to 15 kt. Seas 3 to 4 ft. .TUE NIGHT...N winds 10 to 15 kt. Seas 3 ft. .WED...NE winds 10 to 15 kt. Seas 3 ft. .WED NIGHT...NE winds 10 to 15 kt. Seas 3 ft. .THU...NE winds 10 to 15 kt. Seas 3 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 3 ft. .FRI...S winds less than 10 kt. Seas 2 ft or less. .FRI NIGHT...W winds less than 10 kt. Seas 3 ft. .SAT...NW winds less than 10 kt. Seas 3 ft. .SAT NIGHT...NW winds less than 10 kt. Seas 3 to 4 ft. ATLC waters from 22N to 27N between 65W and the Bahamas .OVERNIGHT...SW winds 10 to 15 kt. Seas 5 to 7 ft. .TUE...W winds 10 to 15 kt. Seas 5 to 7 ft. .TUE NIGHT...E winds less than 10 kt. Seas 4 to 6 ft. .WED...NE winds 10 to 15 kt W of 70W, and SE less than 10 kt elsewhere. Seas 4 to 5 ft. .WED NIGHT...NE winds 10 to 15 kt. Seas 4 to 5 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. .FRI...SE winds 10 to 15 kt. Seas 5 to 7 ft. .FRI NIGHT...S winds 10 to 15 kt. Seas 5 to 7 ft. .SAT...S winds 10 to 15 kt. Seas 6 to 8 ft. .SAT NIGHT...NW winds 10 to 15 kt. Seas 6 to 9 ft. ATLC waters S of 22N W of 65W ...GALE CONDITIONS POSSIBLE SAT NIGHT... .OVERNIGHT...S winds less than 10 kt. Seas 3 to 4 ft. .TUE...S winds less than 10 kt. Seas 3 to 4 ft. .TUE NIGHT...E winds less than 10 kt. Seas 3 ft. .WED...E winds less than 10 kt. Seas 3 ft. .WED NIGHT...E winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 3 to 5 ft. .THU...E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 3 to 5 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. .FRI...SE winds 10 to 15 kt. Seas 4 to 6 ft. .FRI NIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft. .SAT...S winds 10 to 15 kt, shifting to NW in the afternoon. Seas 4 to 6 ft. .SAT NIGHT...N winds 15 to 25 kt. Seas 8 to 11 ft. ATLC waters from 19N to 22N between 55W and 65W ...GALE CONDITIONS POSSIBLE FRI NIGHT THROUGH SAT NIGHT... .OVERNIGHT...E winds 10 to 15 kt. Seas 4 to 5 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 20 kt. Seas 6 to 8 ft. .THU...E winds 10 to 20 kt. Seas 6 to 9 ft. .THU NIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft. .FRI...E winds 15 to 20 kt. Seas 6 to 9 ft. .FRI NIGHT...E winds 15 to 25 kt. Seas 8 to 11 ft. .SAT...SE winds 25 to 35 kt. Seas 10 to 15 ft. .SAT NIGHT...SE winds 25 to 35 kt. Seas 11 to 16 ft.