146 FZNT31 KNHC 092119 OFFN20 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 419 PM EST Thu Mar 9 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 extending from near 20N56W southwestward to Puerto Rico and Hispaniola will continue to sink southward tonight as it weakens. Scattered showers are along the front. A significant swell event in the wake of the front is leading to potentially hazardous marine conditions over the Atlantic waters and in the northeast Caribbean passages. The front will reach from the Leeward Islands to Jamaica to the western tip of Cuba on Fri before dissipating Fri night. The swell event will also propagate across the waters E of Leeward Islands late Thu into Fri. Gentle to moderate trade winds will dominate the remainder of the forecast period, except for moderate to fresh winds in the southeastern and south-central Caribbean and fresh to strong winds in the Gulf of Honduras Sun night through Mon morning. NW Caribbean W of 85W .TONIGHT...E winds 10 to 15 kt. Seas 3 ft. .FRI...E winds 10 to 15 kt. Seas 3 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 3 ft. .SAT...SE winds less than 10 kt. Seas 3 ft in the morning, subsiding to 2 ft or less. .SAT NIGHT...E winds 10 to 15 kt. Seas 3 ft. .SUN...SE winds 10 to 15 kt. Seas 3 to 4 ft. .SUN NIGHT...SE winds 10 to 20 kt. Seas 3 to 5 ft. .MON...SE winds 10 to 20 kt. Seas 4 to 6 ft. .MON NIGHT...SE winds 10 to 15 kt. Seas 3 to 5 ft. .TUE...SE winds 10 to 15 kt, shifting to E in the afternoon. Seas 3 to 5 ft. .TUE NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. Caribbean N of 15N between 72W and 85W .TONIGHT...E winds less than 10 kt S of 18N, and E 10 to 20 kt elsewhere. Seas 3 to 5 ft. .FRI...E winds less than 10 kt S of 18N, and E 10 to 15 kt elsewhere. Seas 3 to 5 ft. .FRI NIGHT...E winds less than 10 kt. Seas 3 to 4 ft in the evening, subsiding to 2 ft or less. .SAT...SE winds less than 10 kt. Seas 3 ft. .SAT NIGHT...SE winds less than 10 kt. Seas 2 ft or less. .SUN...SE winds less than 10 kt. Seas 2 ft or less. .SUN NIGHT...SE winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 2 ft or less. .MON...SE winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 2 ft or less, building to 3 ft in the afternoon. .MON NIGHT...SE winds 10 to 15 kt. Seas 3 ft. .TUE...SE winds less than 10 kt. Seas 3 ft. .TUE NIGHT...E winds less than 10 kt. Seas 3 ft. Caribbean from 11N to 15N W of 72W .TONIGHT...NE winds 10 to 15 kt within 90 nm of coast of Colombia, and E less than 10 kt elsewhere. Seas 3 ft. .FRI...E winds 10 to 15 kt. Seas 3 to 4 ft. .FRI NIGHT...E winds 15 to 20 kt within 90 nm of coast of Colombia, and E 10 to 15 kt elsewhere. 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 4 ft. .SUN...E winds 10 to 15 kt. Seas 3 to 4 ft. .SUN NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. .MON...E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 3 to 4 ft. .MON NIGHT...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...E winds 10 to 15 kt. Seas 3 to 5 ft. SW Caribbean S of 11N .TONIGHT...NE winds less than 10 kt. Seas 3 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 less than 10 kt. Seas 3 to 5 ft. .SAT NIGHT...NE winds less than 10 kt. Seas 3 to 4 ft. .SUN...Variable winds less than 10 kt. Seas 3 to 4 ft. .SUN NIGHT...NE winds less than 10 kt in the evening, becoming variable winds less than 10 kt. Seas 3 ft. .MON...Variable winds less than 10 kt. Seas 3 ft. .MON NIGHT...NE winds less than 10 kt. Seas 3 ft. .TUE...Variable winds less than 10 kt. Seas 3 ft. .TUE NIGHT...NE winds less than 10 kt. Seas 3 ft. Caribbean between 64W and 72W .TONIGHT...NE winds 10 to 15 kt Gulf of Venezuela, and NE less than 10 kt elsewhere. Seas 2 ft or less Gulf of Venezuela, and 3 to 5 ft elsewhere. .FRI...NE winds 10 to 15 kt. Seas 2 ft or less Gulf of Venezuela, and 3 to 5 ft elsewhere. .FRI NIGHT...NE winds 15 to 20 kt Gulf of Venezuela, and NE 10 to 15 kt elsewhere. Gulf of Venezuela, seas 3 ft in the evening, subsiding to 2 ft or less. Elsewhere, seas 3 to 5 ft. .SAT...E winds 10 to 15 kt. Seas 3 to 4 ft. .SAT NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. .SUN...E winds 10 to 15 kt. Seas 3 to 5 ft. .SUN NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. .MON...E winds 10 to 15 kt. Seas 3 to 5 ft. .MON NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. .TUE...E winds 10 to 20 kt. Seas 3 to 5 ft. .TUE NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. Offshore Leeward Islands and adjacent ATLC waters from 15N to 19N W of 55W .TONIGHT...W to NW winds 10 to 15 kt. Seas 6 to 8 ft. .FRI...NW winds less than 10 kt. Seas 6 to 9 ft. .FRI NIGHT...NE winds less than 10 kt. Seas 6 to 8 ft. .SAT...E winds less than 10 kt in the morning, becoming variable winds less than 10 kt. Seas 6 to 8 ft. .SAT NIGHT...SE winds less than 10 kt. Seas 6 to 8 ft. .SUN...SE winds less than 10 kt. Seas 6 to 8 ft. .SUN NIGHT...Variable winds less than 10 kt. Seas 5 to 7 ft. .MON...E winds less than 10 kt. Seas 4 to 6 ft. .MON NIGHT...E winds less than 10 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, increasing to 10 to 15 kt after midnight. Seas 5 to 7 ft. Offshore Windward Islands and adjacent ATLC waters from 07N to 15N W of 55W .TONIGHT...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 4 to 6 ft. .SAT NIGHT...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 15 kt. Seas 5 to 7 ft. .TUE...E winds 10 to 15 kt. Seas 4 to 6 ft. .TUE 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 that extends from near 20N55W to Puerto Rico and Hispaniola will continue to sink southward tonight as it weakens. Fresh to strong W to NW winds E of 75W will increase to strong to near gale-force as they shift to the northeast forecast waters by Fri afternoon. A significant swell event in the wake of the front is bringing seas of 12-17 ft to the waters N of 12N and E of about 67W. Looking ahead, the next cold front is forecast to move off the southeastern U.S. coast by Fri afternoon, bringing strong to near gale-force SW to W winds ahead of it to waters east of Florida. This front will move eastward across the area during the weekend, with minimal gale- force winds possible ahead of the front. Yet another cold front may off the southeastern U.S. coast Sun night and reach from near 31N68W to eastern Cuba by late Tue. Fresh to strong SW winds will precede the front, and mainly fresh NW winds will follow the front. Seas will build behind this front N and NE of the Bahamas. ATLC waters from 27N to 31N W of 77W .TONIGHT...E winds less than 10 kt. Seas 5 to 7 ft. .FRI...S winds 10 to 20 kt. Seas 5 to 7 ft. .FRI NIGHT...W winds 15 to 25 kt. Seas 7 to 10 ft. .SAT...NW winds 10 to 20 kt. Seas 8 to 11 ft. .SAT NIGHT...NE winds 10 to 15 kt. Seas 7 to 10 ft. .SUN...SE winds 10 to 15 kt. Seas 6 to 8 ft. .SUN NIGHT...SW winds 10 to 20 kt. Seas 6 to 9 ft. .MON...W winds 15 to 25 kt. Seas 7 to 10 ft. .MON NIGHT...NW winds 10 to 20 kt. Seas 6 to 9 ft. .TUE...NW winds 10 to 20 kt. Seas 6 to 7 ft. .TUE NIGHT...NW winds 15 to 20 kt. Seas 7 to 10 ft. ATLC waters from 27N to 31N between 65W and 77W ...GALE WARNING BETWEEN 65W AND 70W... .TONIGHT...N winds 10 to 20 kt W of 70W, and NW 15 to 20 kt elsewhere. Seas 8 to 11 ft W of 70W, and 10 to 13 ft elsewhere. .FRI...W of 70W, N winds less than 10 kt, shifting to W in the afternoon. Elsewhere, NW winds 10 to 20 kt. Seas 8 to 11 ft W of 70W, and 10 to 14 ft elsewhere. .FRI NIGHT...W of 70W, SW winds 15 to 25 kt. Elsewhere, NW winds less than 10 kt, becoming SW 10 to 20 kt after midnight. Seas 8 to 11 ft W of 70W, and 9 to 12 ft elsewhere. .SAT...Between 67W and 70W, SW winds 20 to 30 kt increasing to 30 to 35 kt in the afternoon. Between 67W and 65W, SW winds 15 to 20 kt increasing to 25 to 30 kt in the afternoon. Seas 8 to 12 ft in NE swell, building to 10 to 13 ft in the afternoon. W of 67W, SW to W winds 20 to 30 kt except W to NW winds 20 to 25 kt between 74W and 77W. Seas 9 to 13 ft, except 8 to 11 ft between 74W and 77W. .SAT NIGHT...Between 65W and 67W, SW winds 25 to 35 kt. Seas 9 to 14 ft. Between 67W and 70W, W to NW winds 20 to 30 kt. Seas 9 to 14 ft. Between 70W and 77W, NW winds 20 to 25 kt. Seas 8 to 12 ft. .SUN...NW winds 15 to 25 kt. Seas 10 to 15 ft. .SUN NIGHT...NW winds 10 to 15 kt, shifting to SW late. .MON...SW winds 15 to 25 kt. Seas 9 to 12 ft. .MON NIGHT...SW winds 10 to 20 kt. Seas 8 to 12 ft. .TUE...W winds 10 to 20 kt. Seas 8 to 11 ft. .TUE NIGHT...W winds 15 to 25 kt. Seas 8 to 11 ft. Bahamas N of 22N .TONIGHT...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 4 to 6 ft. .FRI NIGHT...SE winds less than 10 kt, shifting to S after midnight. Seas 3 to 5 ft. .SAT...W winds 10 to 15 kt. Seas 3 to 5 ft. .SAT NIGHT...NW winds less than 10 kt. Seas 3 to 5 ft. .SUN...Variable winds less than 10 kt. Seas 3 to 5 ft. .SUN NIGHT...S winds less than 10 kt. Seas 3 to 5 ft. .MON...SW winds less than 10 kt. Seas 3 to 5 ft. .MON NIGHT...S winds less than 10 kt, shifting to SW after midnight. Seas 3 to 5 ft. .TUE...NW winds less than 10 kt. Seas 3 to 5 ft. .TUE NIGHT...N winds 10 to 15 kt. Seas 3 to 5 ft. ATLC waters from 22N to 27N between 65W and the Bahamas .TONIGHT...N winds 10 to 20 kt. Seas 8 to 11 ft. .FRI...W of 70W, N winds 10 to 15 kt in the morning, becoming variable winds less than 10 kt. Elsewhere, N winds 10 to 15 kt. Seas 7 to 10 ft. .FRI NIGHT...W of 70W, Variable winds less than 10 kt, becoming S 10 to 15 kt after midnight. Elsewhere, N winds less than 10 kt, shifting to SE after midnight. Seas 7 to 8 ft W of 70W, and 8 to 11 ft elsewhere. .SAT...SW winds 15 to 25 kt. Seas 7 to 10 ft. .SAT NIGHT...W winds 10 to 20 kt. Seas 8 to 11 ft. .SUN...NW winds 10 to 15 kt. Seas 7 to 10 ft. .SUN NIGHT...E winds less than 10 kt. Seas 7 to 10 ft. .MON...SE winds less than 10 kt, shifting to S in the afternoon. Seas 7 to 10 ft. .MON NIGHT...S winds 10 to 15 kt. Seas 7 to 9 ft. .TUE...SW winds 10 to 15 kt. Seas 6 to 8 ft. .TUE NIGHT...W winds 10 to 15 kt. Seas 6 to 8 ft. ATLC waters S of 22N W of 65W .TONIGHT...N winds 10 to 15 kt. Seas 6 to 8 ft. .FRI...N winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 5 to 7 ft. .FRI NIGHT...E winds less than 10 kt. Seas 5 to 7 ft. .SAT...Variable winds less than 10 kt. Seas 5 to 7 ft. .SAT NIGHT...Variable winds less than 10 kt. Seas 4 to 6 ft. .SUN...SW winds less than 10 kt, shifting to NW in the afternoon. Seas 4 to 6 ft. .SUN NIGHT...E winds less than 10 kt. Seas 3 to 5 ft. .MON...E winds less than 10 kt. Seas 4 to 6 ft. .MON NIGHT...SE winds less than 10 kt. Seas 5 to 7 ft. .TUE...S winds less than 10 kt. Seas 4 to 6 ft. .TUE NIGHT...S winds less than 10 kt. Seas 3 to 5 ft. ATLC waters from 19N to 22N between 55W and 65W .TONIGHT...NW winds 10 to 15 kt. Seas 10 to 12 ft. .FRI...NW winds 10 to 15 kt. Seas 8 to 11 ft. .FRI NIGHT...N winds 10 kt. Seas 8 to 10 ft. .SAT...Variable winds less than 10 kt. Seas 9 to 11 ft. .SAT NIGHT...Variable winds less than 10 kt, becoming S 10 kt after midnight. Seas 8 to 10 ft. .SUN...SW winds 10 to 15 kt. Seas 6 to 8 ft. .SUN NIGHT...W winds less than 10 kt. Seas 5 to 7 ft. .MON...Variable winds less than 10 kt. Seas 6 to 8 ft. .MON NIGHT...Variable winds less than 10 kt. Seas 7 to 10 ft. .TUE...Variable winds less than 10 kt. Seas 7 to 9 ft. .TUE NIGHT...Variable winds less than 10 kt, becoming SE 10 kt after midnight. Seas 7 to 9 ft.