820 FZNT31 KNHC 280316 OFFN20 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 1016 PM EST Fri Dec 27 2024 Marine Weather HF Voice Broadcast for the Tropical N Atlantic from 07N to 19N W of 55W, the N Atlantic from 19N to 31N W of 55W including the 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 W of 55W .SYNOPSIS...Moderate to locally fresh trade winds will prevail across central and eastern portions of the basin this weekend. The strengthening pressure gradient between a building ridge in the western Atlantic, strengthening low pressure in the central Atlantic and lower pressure south of the basin will promote locally strong NE winds through the Windward Passage and south of Hispaniola tonight through Sun morning. These winds will diminish early next week as the high pressure north of the area weakens and shifts eastward. Looking ahead, building high pressure north of the area will support increasing winds and seas across the basin by the middle of next week. NW Caribbean W of 85W .TONIGHT...E winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 3 to 4 ft. .SAT...SE winds 10 to 15 kt. Seas 3 to 4 ft. .SAT NIGHT...SE winds 10 to 15 kt. Seas 3 to 4 ft. .SUN...SE winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 3 to 4 ft. .SUN NIGHT...E winds less than 10 kt. Seas 3 ft. .MON...Variable winds less than 10 kt. Seas 3 ft. .MON NIGHT...SE winds less than 10 kt. Seas 3 ft. .TUE...E winds less than 10 kt. Seas 2 ft or less. .TUE NIGHT...E winds less than 10 kt. Seas 2 ft or less. .WED...E winds less than 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 3 ft. .WED NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. Caribbean N of 15N between 72W and 85W .TONIGHT...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. .SUN...E winds 10 to 15 kt. Seas 4 to 6 ft. .SUN NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .MON...E winds less than 10 kt. Seas 3 to 5 ft. .MON NIGHT...E winds less than 10 kt. Seas 3 to 5 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. .WED...E winds 10 to 15 kt. Seas 3 to 5 ft. .WED NIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. Caribbean from 11N to 15N W of 72W .TONIGHT...E winds 10 to 20 kt within 90 nm of coast of Colombia, and E 10 to 15 kt elsewhere. Seas 4 to 6 ft. .SAT...E winds 10 to 15 kt. Seas 3 to 5 ft. .SAT NIGHT...E winds 15 to 20 kt within 90 nm of coast of Colombia, and E 10 to 15 kt elsewhere. Seas 4 to 6 ft. .SUN...E winds 10 to 15 kt. Seas 4 to 6 ft. .SUN NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .MON...E winds 10 to 15 kt. Seas 4 to 6 ft. .MON NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. .TUE...E winds 10 to 15 kt. Seas 4 to 6 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...NE winds 10 to 20 kt. Seas 4 to 6 ft. SW Caribbean S of 11N .TONIGHT...Variable winds less than 10 kt, becoming SW less than 10 kt after midnight. Seas 3 to 4 ft. .SAT...W winds less than 10 kt. Seas 3 to 4 ft. .SAT NIGHT...Variable winds less than 10 kt, becoming NW less than 10 kt after midnight. Seas 3 to 4 ft. .SUN...NE winds less than 10 kt in the morning, becoming variable winds less than 10 kt. Seas 3 to 5 ft. .SUN NIGHT...Variable winds less than 10 kt, becoming NW less than 10 kt after midnight. Seas 3 to 5 ft. .MON...NE winds less than 10 kt in the morning, becoming variable winds less than 10 kt. Seas 3 to 5 ft. .MON NIGHT...Variable winds less than 10 kt. Seas 3 to 4 ft. .TUE...Variable winds less than 10 kt. Seas 3 to 5 ft. .TUE NIGHT...N winds less than 10 kt. Seas 3 to 5 ft. .WED...Variable winds less than 10 kt, becoming N less than 10 kt in the afternoon. Seas 4 to 6 ft. .WED NIGHT...NE winds less than 10 kt. Seas 3 to 5 ft. Caribbean between 64W and 72W .TONIGHT...E winds 15 to 20 kt Gulf of Venezuela, 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...NE winds 10 to 20 kt. Seas 4 to 6 ft. .SUN...NE winds 10 to 20 kt. Gulf of Venezuela, seas 3 ft in the morning, subsiding to 2 ft or less. Elsewhere, seas 4 to 6 ft. .SUN NIGHT...NE winds 10 to 20 kt. Seas 4 to 6 ft. .MON...NE winds 10 to 15 kt. Seas 4 to 6 ft. .MON NIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft. .TUE...E winds 10 to 15 kt. Seas 4 to 5 ft. .TUE NIGHT...E winds 10 to 15 kt. Seas 4 to 5 ft. .WED...NE winds 10 to 15 kt. Seas 4 to 5 ft. .WED NIGHT...NE 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...N winds less than 10 kt. Seas 3 to 5 ft. .SAT...N winds less than 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 3 to 5 ft. .SAT NIGHT...N winds 10 to 15 kt. Seas 6 to 8 ft. .SUN...N winds 10 to 15 kt. Seas 6 to 9 ft. .SUN NIGHT...N winds 10 to 15 kt, diminishing to less than 10 kt after midnight. Seas 6 to 9 ft. .MON...NE winds less than 10 kt. Seas 6 to 8 ft. .MON NIGHT...NE winds less than 10 kt. Seas 5 to 7 ft. .TUE...NE winds less than 10 kt. Seas 5 to 7 ft. .TUE NIGHT...E winds less than 10 kt. Seas 4 to 6 ft. .WED...NE winds less than 10 kt. Seas 4 to 6 ft. .WED NIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. Offshore Windward Islands and adjacent ATLC waters from 07N to 15N W of 55W .TONIGHT...E winds 10 to 15 kt, diminishing to less than 10 kt after midnight. Seas 3 to 5 ft. .SAT...E winds less than 10 kt. Seas 3 to 5 ft. .SAT NIGHT...NE winds 10 to 15 kt, diminishing to less than 10 kt after midnight. Seas 3 to 5 ft. .SUN...NE winds less than 10 kt. Seas 3 to 5 ft. .SUN NIGHT...NE winds 10 to 15 kt, diminishing to less than 10 kt after midnight. Seas 4 to 6 ft. .MON...NE winds less than 10 kt. Seas 5 to 7 ft. .MON NIGHT...NE winds 10 to 15 kt. Seas 5 to 7 ft. .TUE...NE winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 5 to 7 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...NE winds 10 to 15 kt. Seas 4 to 6 ft. Synopsis for the the SW N Atlantic including the Bahamas .SYNOPSIS...A 1008 mb low centered near 30N57W will strengthen and move eastward this weekend. A wide swath of fresh to strong N to NW winds will occur surrounding the low, with these winds occurring north of 25N between 55W and 68W by this evening, and north of 21N between 55W and 65W by Sat morning. These winds and seas will shift east of 55W through late Mon as the low pressure drifts eastward. Elsewhere, moderate to locally fresh E to NE winds will prevail north of the Greater Antilles and west of the low pressure system this weekend, along the periphery of high pressure moving off the coast of the United States. Looking ahead, expect increasing S to SE winds and building seas off northeast Florida late Sat through Sun night ahead of cold front approaching the region over the southeastern United States. ATLC waters from 27N to 31N W of 77W .TONIGHT...SE winds 15 to 20 kt. Seas 6 to 7 ft. .SAT...SE winds 15 to 20 kt. Seas 6 to 7 ft. .SAT NIGHT...SE winds 15 to 20 kt. Seas 6 to 8 ft. .SUN...S winds 15 to 20 kt. Seas 6 to 8 ft. .SUN NIGHT...SW winds 10 to 20 kt. Seas 6 to 8 ft. .MON...W winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 5 to 7 ft. .MON NIGHT...Variable winds less than 10 kt, becoming S 10 kt after midnight. Seas 3 to 5 ft. .TUE...SW winds 10 to 15 kt. Seas 3 to 5 ft. .TUE NIGHT...SW winds 10 to 20 kt. Seas 4 to 6 ft. .WED...W winds 10 to 20 kt. Seas 5 to 7 ft. .WED NIGHT...NW winds 10 to 15 kt. Seas 4 to 6 ft. ATLC waters from 27N to 31N between 65W and 77W .TONIGHT...E winds 10 to 15 kt W of 70W, and NE 15 to 20 kt elsewhere. Seas 7 to 10 ft. .SAT...NE winds 10 to 20 kt. Seas 6 to 9 ft. .SAT NIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft. .SUN...E winds 10 to 15 kt. Seas 6 to 9 ft. .SUN NIGHT...SE winds 10 to 15 kt. Seas 6 to 8 ft. .MON...S winds 10 to 15 kt. Seas 5 to 7 ft. .MON NIGHT...S winds less than 10 kt. Seas 4 to 6 ft. .TUE...S winds less than 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 4 to 5 ft. .TUE NIGHT...S winds 10 to 15 kt. Seas 4 to 6 ft. .WED...SW winds 10 to 15 kt. Seas 5 to 7 ft. .WED NIGHT...W winds 10 to 15 kt, diminishing to less than 10 kt after midnight. Seas 5 to 7 ft. Bahamas N of 22N .TONIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. .SAT...E winds 10 to 20 kt. Seas 4 to 6 ft. .SAT NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. .SUN...E winds 10 to 15 kt. Seas 3 to 5 ft. .SUN NIGHT...SE winds 10 to 15 kt, diminishing to less than 10 kt after midnight. Seas 3 to 5 ft. .MON...SE winds less than 10 kt. Seas 3 to 4 ft. .MON NIGHT...SE winds less than 10 kt. Seas 3 to 4 ft. .TUE...SE winds less than 10 kt. Seas 3 to 4 ft. .TUE NIGHT...SE winds less than 10 kt. Seas 3 to 4 ft. .WED...E winds less than 10 kt. Seas 2 ft or less. .WED NIGHT...NE winds less than 10 kt. Seas 2 ft or less. ATLC waters from 22N to 27N between 65W and the Bahamas .TONIGHT...NE winds 10 to 20 kt. Seas 6 to 9 ft. .SAT...NE winds 15 to 20 kt. Seas 7 to 9 ft. .SAT NIGHT...E winds 10 to 20 kt W of 70W, and NE 10 to 20 kt elsewhere. Seas 7 to 9 ft. .SUN...E winds 10 to 15 kt. Seas 6 to 9 ft. .SUN NIGHT...E winds 10 to 15 kt. Seas 6 to 8 ft. .MON...E winds less than 10 kt. Seas 6 to 8 ft. .MON NIGHT...E winds less than 10 kt. Seas 5 to 7 ft. .TUE...E winds 10 kt. Seas 4 to 6 ft. .TUE NIGHT...E winds less than 10 kt. Seas 4 to 6 ft. .WED...SE winds less than 10 kt. Seas 4 to 5 ft. .WED NIGHT...E winds less than 10 kt. Seas 4 to 5 ft. ATLC waters S of 22N W of 65W .TONIGHT...NE winds 10 to 20 kt. Seas 5 to 7 ft. .SAT...NE winds 10 to 20 kt. Seas 6 to 8 ft. .SAT NIGHT...NE winds 10 to 20 kt. Seas 6 to 8 ft. .SUN...E winds 10 to 20 kt. Seas 6 to 8 ft. .SUN NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. .MON...E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 5 to 7 ft. .MON NIGHT...E winds 10 to 15 kt, diminishing to less than 10 kt after midnight. 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 10 to 15 kt, diminishing to less than 10 kt after midnight. Seas 4 to 6 ft. .WED...E winds less than 10 kt. Seas 4 to 6 ft. .WED NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. ATLC waters from 19N to 22N between 55W and 65W .TONIGHT...N winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 5 to 6 ft. .SAT...N winds 10 to 20 kt. Seas 6 to 9 ft. .SAT NIGHT...N winds 15 to 20 kt. Seas 8 to 11 ft. .SUN...N winds 10 to 15 kt. Seas 8 to 11 ft. .SUN NIGHT...N winds 10 to 15 kt. Seas 8 to 11 ft. .MON...NE winds 10 kt. Seas 7 to 10 ft. .MON NIGHT...NE winds 10 kt. Seas 7 to 8 ft. .TUE...NE winds 10 kt. Seas 6 to 8 ft. .TUE NIGHT...NE winds 10 to 15 kt. Seas 6 to 7 ft. .WED...NE winds 10 kt. Seas 6 to 7 ft. .WED NIGHT...NE winds 10 to 15 kt. Seas 5 to 6 ft.