000 FZNT31 KNHC 161445 OFFN20 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 945 AM EST Thu Jan 16 2025 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 fresh NE winds will occur across the southwestern, central and northeastern Caribbean through this weekend as a tight pressure gradient prevails between low pressure in northwestern Colombia and high pressure in the western Atlantic. Winds will pulse to strong speeds offshore of Colombia, through the Mona Passage and downwind of Hispaniola, and rough seas will accompany the strong winds. Long-period NE to E swell will lead to rough seas through the Atlantic Passages this weekend into early next week. Looking ahead, fresh to strong E to NE winds and building seas will impact much of the basin early next week as a strong cold front moves through the Gulf of Mexico. NW Caribbean W of 85W .TODAY...E winds less than 10 kt in the morning, becoming variable winds less than 10 kt. Seas 4 to 6 ft. .TONIGHT...Variable winds less than 10 kt. Seas 3 to 5 ft. .FRI...Variable winds less than 10 kt. Seas 3 to 4 ft. .FRI NIGHT...SE winds less than 10 kt. Seas 3 to 4 ft. .SAT...SE winds 10 to 15 kt. Seas 3 ft. .SAT NIGHT...SE winds 10 to 20 kt. Seas 3 to 5 ft. .SUN...SE winds 10 to 15 kt. Seas 3 to 5 ft. .SUN NIGHT...E winds less than 10 kt. Seas 3 to 4 ft. .MON...E winds less than 10 kt, shifting to NE in the afternoon. Seas 4 to 6 ft. .MON NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. Caribbean N of 15N between 72W and 85W .TODAY...NE winds 10 to 20 kt. Seas 4 to 6 ft. .TONIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. .FRI...S of 18N, NE winds 10 to 15 kt. Elsewhere, E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 4 to 6 ft. .FRI NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft S of 18N, and 3 ft elsewhere. .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 20 kt. Seas 4 to 6 ft. .SUN NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .MON...E winds 10 to 20 kt. Seas 4 to 6 ft. .MON NIGHT...NE winds 10 to 20 kt. Seas 5 to 7 ft. Caribbean from 11N to 15N W of 72W .TODAY...NE winds 10 to 20 kt. Seas 6 to 8 ft. .TONIGHT...E winds 15 to 25 kt within 90 nm of coast of Colombia, and NE 10 to 20 kt elsewhere. Seas 6 to 8 ft. .FRI...NE winds 10 to 20 kt. Seas 6 to 8 ft. .FRI NIGHT...E winds 15 to 25 kt within 90 nm of coast of Colombia, and NE 10 to 20 kt elsewhere. Seas 6 to 8 ft. .SAT...E winds 10 to 20 kt. Seas 6 to 8 ft. .SAT NIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft. .SUN...E winds 10 to 20 kt. Seas 6 to 9 ft. .SUN NIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft. .MON...E winds 10 to 20 kt. Seas 6 to 9 ft. .MON NIGHT...NE winds 10 to 20 kt. Seas 7 to 10 ft. SW Caribbean S of 11N .TODAY...NE winds 10 to 20 kt. Seas 6 to 8 ft. .TONIGHT...NE winds 10 to 20 kt. Seas 6 to 9 ft. .FRI...NE winds 10 to 15 kt. Seas 6 to 8 ft. .FRI NIGHT...NE winds 10 to 15 kt. Seas 6 to 8 ft. .SAT...NE winds 10 to 15 kt. Seas 6 to 8 ft. .SAT NIGHT...NE winds 10 to 15 kt. Seas 5 to 7 ft. .SUN...N winds less than 10 kt. Seas 6 to 8 ft. .SUN NIGHT...N winds less than 10 kt. Seas 5 to 7 ft. .MON...NE winds 10 to 15 kt. Seas 5 to 7 ft. .MON NIGHT...NE winds 10 to 20 kt. Seas 6 to 9 ft. Caribbean between 64W and 72W .TODAY...NE winds 10 to 20 kt. Seas 3 to 4 ft Gulf of Venezuela, and 5 to 7 ft elsewhere. .TONIGHT...NE winds 10 to 20 kt. Seas 5 to 7 ft. .FRI...E winds 10 to 20 kt. Seas 3 to 4 ft Gulf of Venezuela, and 5 to 7 ft elsewhere. .FRI NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. .SAT...E winds 10 to 20 kt. Seas 5 to 7 ft. .SAT NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. .SUN...E winds 10 to 20 kt. Seas 5 to 7 ft. .SUN NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. .MON...E winds 10 to 20 kt. Seas 6 to 8 ft. .MON NIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft. Offshore Leeward Islands and adjacent ATLC waters from 15N to 19N W of 55W .TODAY...NE winds 10 to 15 kt. Seas 5 to 7 ft. .TONIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. .FRI...E winds 10 to 15 kt. Seas 6 to 8 ft. .FRI NIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft. .SAT...E 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 20 kt. Seas 6 to 9 ft. .SUN NIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft. .MON...E winds 10 to 20 kt. Seas 7 to 10 ft. .MON NIGHT...E winds 10 to 20 kt. Seas 7 to 10 ft. Offshore Windward Islands and adjacent ATLC waters from 07N to 15N W of 55W .TODAY...E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 5 to 7 ft. .TONIGHT...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 20 kt. Seas 5 to 7 ft. .SAT...E winds 10 to 20 kt. Seas 6 to 8 ft. .SAT NIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft. .SUN...E winds 10 to 20 kt. Seas 6 to 9 ft. .SUN NIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft. .MON...E winds 10 to 20 kt. Seas 6 to 9 ft. .MON NIGHT...E winds 10 to 20 kt. Seas 7 to 10 ft. Synopsis for the the SW N Atlantic including the Bahamas .SYNOPSIS...A cold front in the central Atlantic will progress eastward today, producing fresh to strong SW winds ahead of the front, and fresh to locally strong NW winds behind the front, generally north of 28N and east of 60W. A long-period N swell associated with this system will produce widespread rough seas across much of the Atlantic into this weekend, producing seas in excess of 8 ft north of 25N and east of 75W today, and north of 20N by Fri morning. Seas greater than 12 ft are expected north of 28N and east of 70W today. A strong cold front moving off the coast of the southeastern United States will reinforce rough seas north of 28N and east of 80W by Fri morning. Fresh to strong W to NW winds, generally north of 28N, will follow the front. South of 20N, moderate to fresh trades and locally rough seas will prevail. Looking ahead, another cold front moving off the coast of the southeastern U.S. will lead to strong winds and building seas in the northwestern Tropical Atlantic Sat into early next week. ATLC waters from 27N to 31N W of 77W .TODAY...NW winds 10 to 15 kt. Seas 4 to 6 ft. .TONIGHT...W winds 10 to 20 kt. Seas 5 to 7 ft. .FRI...NW 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 4 ft. .SAT...S winds 15 to 25 kt. Seas 4 to 6 ft. .SAT NIGHT...SW winds 15 to 25 kt. Seas 6 to 8 ft. .SUN...SW winds 15 to 25 kt. Seas 6 to 8 ft. .SUN NIGHT...NW winds 10 to 20 kt. Seas 5 to 7 ft. .MON...N winds 10 to 20 kt. Seas 5 to 7 ft. .MON NIGHT...N winds 10 to 15 kt. Seas 5 to 6 ft. ATLC waters from 27N to 31N between 65W and 77W .TODAY...NW winds 10 to 15 kt. Seas 7 to 10 ft W of 70W, and 10 to 13 ft elsewhere. .TONIGHT...W winds 15 to 25 kt W of 70W, and W 10 to 20 kt elsewhere. Seas 7 to 10 ft. .FRI...W winds 10 to 20 kt W of 70W, and W 15 to 25 kt elsewhere. Seas 7 to 10 ft. .FRI NIGHT...W of 70W, NW winds less than 10 kt, shifting to SE after midnight. Elsewhere, NW winds 10 to 15 kt, shifting to N after midnight. Seas 6 to 9 ft. .SAT...SE winds 10 to 20 kt. Seas 5 to 7 ft. .SAT NIGHT...S winds 15 to 25 kt. Seas 6 to 9 ft. .SUN...SW winds 10 to 20 kt. Seas 6 to 9 ft. .SUN NIGHT...SW winds 10 to 20 kt. Seas 6 to 9 ft. .MON...W winds 10 to 15 kt. Seas 6 to 8 ft. .MON NIGHT...N winds 10 to 15 kt. Seas 5 to 7 ft. Bahamas N of 22N .TODAY...NE winds 10 to 15 kt. Seas 3 to 5 ft. .TONIGHT...E winds less than 10 kt. Seas 3 to 5 ft. .FRI...E winds less than 10 kt. Seas 3 to 5 ft. .FRI NIGHT...SE winds 10 to 15 kt. 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...S winds 10 to 15 kt. Seas 3 to 4 ft. .SUN NIGHT...SW winds less than 10 kt. Seas 2 ft or less. .MON...N winds less than 10 kt, shifting to NE in the afternoon. Seas 2 ft or less, building to 3 ft in the afternoon. .MON NIGHT...NE winds 10 to 20 kt. Seas 3 to 4 ft. ATLC waters from 22N to 27N between 65W and the Bahamas .TODAY...W of 70W, N winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Elsewhere, N winds 10 to 15 kt. Seas 7 to 10 ft. .TONIGHT...NE winds less than 10 kt in the evening, becoming variable winds less than 10 kt. Seas 7 to 10 ft. .FRI...N winds less than 10 kt. Seas 6 to 8 ft. .FRI NIGHT...NE winds 10 to 15 kt. Seas 5 to 6 ft. .SAT...E winds 10 to 15 kt. Seas 5 to 7 ft. .SAT NIGHT...SE winds 10 to 15 kt. Seas 5 to 6 ft. .SUN...SE winds 10 to 15 kt. Seas 5 to 6 ft. .SUN NIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft. .MON...SE winds less than 10 kt. Seas 4 to 6 ft. .MON NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. ATLC waters S of 22N W of 65W .TODAY...NE winds 10 to 15 kt. Seas 5 to 7 ft. .TONIGHT...NE winds 10 to 20 kt. Seas 5 to 7 ft. .FRI...NE winds 10 to 15 kt. Seas 5 to 7 ft. .FRI NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. .SAT...E winds 10 to 20 kt. Seas 5 to 7 ft. .SAT NIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft. .SUN...E winds 10 to 20 kt. Seas 5 to 7 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 4 to 6 ft. ATLC waters from 19N to 22N between 55W and 65W .TODAY...NE winds 10 to 15 kt. Seas 5 to 6 ft. .TONIGHT...NE winds 10 to 15 kt. Seas 6 to 9 ft. .FRI...E winds 10 to 15 kt. Seas 7 to 9 ft. .FRI NIGHT...NE winds 10 to 20 kt. Seas 7 to 8 ft. .SAT...E winds 15 to 20 kt. Seas 7 to 8 ft. .SAT NIGHT...E winds 15 to 20 kt. Seas 7 to 8 ft. .SUN...E winds 15 to 20 kt. Seas 8 ft. .SUN NIGHT...E winds 15 to 20 kt. Seas 7 to 9 ft. .MON...E winds 15 to 20 kt. Seas 7 to 9 ft. .MON NIGHT...E winds 15 to 20 kt. Seas 7 to 9 ft.