000 FZNT31 KNHC 210316 OFFN20 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 1016 PM EST Mon Nov 20 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...Weak low pressure off the coast of Colombia is producing moderate winds and scattered thunderstorms. However, nearby dry air is forecast to prevent much additional development as this allow begins to drift slowly W over the next couple of days. This system has a low chance of formation in the next 48 hours and 7 days. Meanwhile, high pressure building toward the Greater Antilles is leading to moderate to fresh NE winds in the Windward Passage and just S of Hispaniola. These winds will increase further to locally strong Tue into Wed. Elsewhere, winds will be moderate or less into late week. NW Caribbean W of 85W .TONIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. .TUE...E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 3 to 4 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 less than 10 kt. Seas 3 ft. .THU...NE winds less than 10 kt. Seas 3 ft. .THU NIGHT...E winds less than 10 kt. Seas 3 ft. .FRI...E winds less than 10 kt. Seas 3 ft in the morning, subsiding to 2 ft or less. .FRI NIGHT...E winds less than 10 kt. Seas 2 ft or less, building to 3 ft after midnight. .SAT...E winds less than 10 kt. Seas 2 ft or less. .SAT NIGHT...E winds less than 10 kt. Seas 2 ft or less. Caribbean N of 15N between 72W and 85W .TONIGHT...S of 18N, NE winds less than 10 kt, increasing to 10 to 15 kt after midnight. Elsewhere, E winds 10 to 15 kt. Seas 3 to 4 ft. .TUE...E winds 10 to 15 kt. Seas 3 to 5 ft. .TUE NIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft. .WED...E winds 10 to 15 kt. Seas 4 to 6 ft. .WED NIGHT...NE 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 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. Seas 3 to 5 ft. .SAT NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. Caribbean from 11N to 15N W of 72W .TONIGHT...Within 90 nm of coast of Colombia, NW winds 10 to 15 kt, diminishing to less than 10 kt after midnight. Elsewhere, NE winds less than 10 kt. Seas 3 to 4 ft. .TUE...NE winds less than 10 kt. Seas 3 ft. .TUE NIGHT...Within 90 nm of coast of Colombia, N winds less than 10 kt. Elsewhere, NE winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 3 to 5 ft. .WED...E winds less than 10 kt within 90 nm of coast of Colombia, and NE 10 to 15 kt elsewhere. Seas 3 to 5 ft. .WED NIGHT...NE 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 3 to 5 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 3 to 4 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...NE winds 10 to 20 kt. Seas 4 to 6 ft. SW Caribbean S of 11N .TONIGHT...NW winds less than 10 kt in the evening, becoming variable winds less than 10 kt. Seas 3 ft in the evening, subsiding to 2 ft or less. .TUE...Variable winds less than 10 kt, becoming W less than 10 kt in the afternoon. Seas 2 ft or less. .TUE NIGHT...NW winds less than 10 kt in the evening, becoming 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. Seas 2 ft or less. .THU...Variable winds less than 10 kt. Seas 2 ft or less, building to 3 ft in the afternoon. .THU NIGHT...N winds less than 10 kt. Seas 3 ft. .FRI...NE winds less than 10 kt. Seas 3 to 4 ft. .FRI NIGHT...NE winds less than 10 kt. Seas 3 to 4 ft. .SAT...E winds less than 10 kt in the morning, becoming variable winds less than 10 kt. Seas 3 to 4 ft. .SAT NIGHT...N winds less than 10 kt. Seas 3 to 4 ft. Caribbean between 64W and 72W .TONIGHT...E winds less than 10 kt. Seas 2 ft or less Gulf of Venezuela, and 3 to 5 ft elsewhere. .TUE...Gulf of Venezuela, Variable winds less than 10 kt. Elsewhere, E winds less than 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 2 ft or less Gulf of Venezuela, and 3 to 5 ft elsewhere. .TUE NIGHT...NE winds 10 to 15 kt. Seas 2 ft or less Gulf of Venezuela, and 4 to 6 ft elsewhere. .WED...E winds 10 to 15 kt. Seas 2 ft or less Gulf of Venezuela, and 4 to 6 ft elsewhere. .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 4 to 5 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .SAT...E winds 10 to 15 kt. Seas 4 to 6 ft. .SAT 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...SE winds less than 10 kt. Seas 4 to 6 ft. .TUE...SE winds less than 10 kt in the morning, becoming variable winds less than 10 kt. Seas 3 to 5 ft. .TUE NIGHT...Variable winds less than 10 kt, becoming NE less than 10 kt after midnight. Seas 3 to 5 ft. .WED...NE winds less than 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 4 to 6 ft. .WED NIGHT...NE winds 10 to 15 kt. Seas 6 to 9 ft. .THU...E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 6 to 9 ft. .THU NIGHT...NE winds 10 to 15 kt. Seas 6 to 8 ft. .FRI...NE winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 6 to 9 ft. .FRI NIGHT...NE winds 10 to 15 kt, diminishing to less than 10 kt after midnight. Seas 5 to 7 ft. .SAT...NE winds less than 10 kt. Seas 5 to 7 ft. .SAT NIGHT...NE 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 10 to 15 kt. Seas 4 to 6 ft. .TUE...E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 4 to 6 ft. .TUE NIGHT...E 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 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 5 to 7 ft. .FRI...E winds 10 to 15 kt. Seas 5 to 7 ft. .FRI NIGHT...NE winds 10 to 15 kt. Seas 5 to 7 ft. .SAT...NE winds 10 to 15 kt. Seas 5 to 7 ft. .SAT NIGHT...NE winds 10 to 15 kt. Seas 5 to 7 ft. Synopsis for the the SW N Atlantic including the Bahamas .SYNOPSIS...Low pressure is developing near 31N58W along a cold front that extends SW to Dominican Republic. This low will move SE through the northeastern through Tue night, bringing gale force winds, with a broad area of strong winds on both sides of the front N of 23n and E of 65W. Very rough seas of up to 20 ft will accompany is area of strong to gale-force winds. As this low reaches warmer sea temperatures during the next few days, environmental conditions appear conducive for this system to gradually acquire tropical characteristics. A subtropical or tropical storm could form by the latter part of this week, as the system moves E of the area and then NE. Looking ahead, fresh to strong winds will develop offshore northern Florida by Wednesday in advance of the next cold front. ATLC waters from 27N to 31N W of 77W .TONIGHT...E winds 15 to 20 kt. Seas 6 to 7 ft. .TUE...SE winds 15 to 20 kt. Seas 6 to 7 ft. .TUE NIGHT...S winds 10 to 20 kt. Seas 6 to 8 ft. .WED...SW winds 15 to 25 kt. Seas 6 to 9 ft. .WED NIGHT...W winds 15 to 25 kt. Seas 7 to 10 ft. .THU...N winds 10 to 15 kt. Seas 6 to 9 ft. .THU NIGHT...N winds 10 kt in the evening, becoming variable winds less than 10 kt. Seas 4 to 6 ft. .FRI...E winds 10 kt in the morning, becoming variable winds less than 10 kt. Seas 3 to 4 ft. .FRI NIGHT...S winds less than 10 kt. Seas 3 to 4 ft. .SAT...NW winds less than 10 kt. Seas 3 to 4 ft. .SAT NIGHT...N winds 10 kt. Seas 3 to 5 ft. ATLC waters from 27N to 31N between 65W and 77W .TONIGHT...E winds 15 to 20 kt W of 70W, and NE 20 to 25 kt elsewhere. Seas 6 to 9 ft W of 70W, and 10 to 12 ft elsewhere. .TUE...NE winds 15 to 20 kt. Seas 7 to 9 ft W of 70W, and 9 to 12 ft elsewhere. .TUE NIGHT...E winds 10 to 20 kt. Seas 8 to 11 ft. .WED...SE winds 10 to 15 kt. Seas 7 to 8 ft W of 70W, and 8 to 11 ft elsewhere. .WED NIGHT...SW winds 15 to 25 kt. Seas 8 to 11 ft. .THU...W winds 10 to 20 kt. Seas 8 to 11 ft. .THU NIGHT...N winds 10 to 15 kt. Seas 6 to 9 ft. .FRI...NE winds 10 kt in the morning, becoming variable winds less than 10 kt. Seas 6 to 8 ft. .FRI NIGHT...NE winds 10 kt in the evening, becoming variable winds less than 10 kt. Seas 5 to 7 ft. .SAT...Variable winds less than 10 kt. Seas 4 to 6 ft. .SAT NIGHT...NE winds less than 10 kt in the evening, becoming variable winds less than 10 kt. Seas 3 to 5 ft. Bahamas N of 22N .TONIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. .TUE...E winds 10 to 20 kt. Seas 4 to 6 ft. .TUE NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. .WED...SE winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 4 to 6 ft. .WED NIGHT...SE winds less than 10 kt. Seas 3 to 5 ft. .THU...SE winds less than 10 kt in the morning, becoming variable winds less than 10 kt. Seas 3 to 4 ft. .THU NIGHT...E winds less than 10 kt. Seas 3 to 4 ft. .FRI...E winds less than 10 kt. Seas 3 to 4 ft. .FRI NIGHT...E winds less than 10 kt. Seas 3 to 4 ft. .SAT...E winds less than 10 kt. Seas 3 ft. .SAT NIGHT...E winds less than 10 kt. Seas 3 ft. ATLC waters from 22N to 27N between 65W and the Bahamas .TONIGHT...NE winds 10 to 20 kt. Seas 7 to 10 ft. .TUE...NE winds 15 to 20 kt. Seas 8 to 11 ft. .TUE NIGHT...E winds 15 to 20 kt. Seas 8 to 11 ft. .WED...E winds 10 to 15 kt. Seas 7 to 10 ft. .WED NIGHT...SE winds 10 kt. Seas 7 to 10 ft. .THU...S 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 5 to 6 ft. .FRI NIGHT...E winds less than 10 kt. Seas 5 to 6 ft. .SAT...E winds less than 10 kt. Seas 4 to 6 ft. .SAT NIGHT...E winds 10 kt. Seas 4 to 6 ft. ATLC waters S of 22N W of 65W .TONIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. .TUE...NE winds 10 to 20 kt. Seas 6 to 8 ft. .TUE NIGHT...NE winds 10 to 20 kt. Seas 7 to 10 ft. .WED...E winds 10 to 20 kt. Seas 6 to 9 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 5 to 7 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 5 to 7 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. .SAT...E winds less than 10 kt. Seas 4 to 6 ft. .SAT NIGHT...E winds less than 10 kt. Seas 4 to 6 ft. ATLC waters from 19N to 22N between 55W and 65W .TONIGHT...S winds 10 kt. Seas 5 to 6 ft. .TUE...W winds 10 to 15 kt. Seas 5 to 7 ft. .TUE NIGHT...N 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 15 kt. Seas 9 to 12 ft. .THU...E winds 10 to 15 kt. Seas 9 to 11 ft. .THU NIGHT...NE winds 10 kt. Seas 8 to 10 ft. .FRI...NE winds 10 kt. Seas 7 to 9 ft. .FRI NIGHT...NE winds 10 kt. Seas 6 to 8 ft. .SAT...NE winds 10 kt. Seas 6 to 7 ft. .SAT NIGHT...NE winds 10 kt. Seas 6 ft.