364 FZNT31 KNHC 192107 OFFN20 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 407 PM EST Thu Dec 19 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...Fresh trade winds will continue across the eastern, central and southwestern Caribbean, as well as Atlantic Passages through Fri morning, as a strong pressure gradient between high pressure in the north central Atlantic and the Colombian low prevails. Winds will pulse to strong speeds offshore of Colombia and Venezuela tonight. Elsewhere, gentle to moderate NE winds are expected in the northwestern basin tonight. High pressure building over the Gulf of Mexico Fri through this weekend will lead to generally moderate to locally fresh E to NE winds across the basin through the weekend, except for N to NE winds across northwest portions. Looking ahead, the high pressure will shift slowly eastward and into the western Atlantic early next week to promote fresh to locally strong NE to E winds across much of the Caribbean. NW Caribbean W of 85W .TONIGHT...NE winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 3 to 4 ft. .FRI...N winds 10 to 15 kt. Seas 3 to 4 ft. .FRI NIGHT...N winds 10 to 15 kt. Seas 4 to 6 ft. .SAT...N winds 10 to 15 kt. Seas 4 to 6 ft. .SAT NIGHT...N winds 10 to 15 kt. Seas 4 to 6 ft. .SUN...NE winds 10 to 15 kt. Seas 4 to 6 ft. .SUN NIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. .MON...NE winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 4 to 5 ft. .MON NIGHT...NE winds less than 10 kt. Seas 4 to 5 ft. .TUE...NE winds less than 10 kt. Seas 3 to 5 ft. .TUE NIGHT...NE winds 10 to 15 kt, diminishing to less than 10 kt after midnight. Seas 3 to 5 ft. Caribbean N of 15N between 72W and 85W .TONIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft. .FRI...NE winds 10 to 15 kt. Seas 4 to 6 ft. .FRI NIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft. .SAT...NE winds 10 to 15 kt. Seas 4 to 6 ft. .SAT NIGHT...NE winds 10 to 20 kt. Seas 4 to 6 ft. .SUN...NE winds 10 to 15 kt. Seas 4 to 6 ft. .SUN NIGHT...NE winds 10 to 20 kt. Seas 5 to 7 ft. .MON...NE winds 10 to 20 kt. Seas 5 to 7 ft. .MON NIGHT...NE winds 10 to 20 kt. Seas 5 to 7 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. Caribbean from 11N to 15N W of 72W .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...E winds 10 to 20 kt within 90 nm of coast of Colombia, and NE 10 to 15 kt elsewhere. Seas 6 to 8 ft. .FRI NIGHT...NE winds 10 to 15 kt. Seas 5 to 6 ft. .SAT...NE winds 10 to 15 kt. Seas 5 to 6 ft. .SAT NIGHT...NE winds 10 to 15 kt. Seas 5 to 6 ft. .SUN...NE winds 10 to 15 kt. Seas 5 to 7 ft. .SUN NIGHT...NE winds 10 to 20 kt. Seas 5 to 7 ft. .MON...NE winds 10 to 20 kt. Seas 5 to 7 ft. .MON NIGHT...NE winds 10 to 20 kt. Seas 5 to 7 ft. .TUE...NE winds 10 to 20 kt. Seas 6 to 8 ft. .TUE NIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft. SW Caribbean S of 11N .TONIGHT...NE winds 10 to 15 kt. Seas 6 to 8 ft. .FRI...N winds 10 to 15 kt. Seas 6 to 8 ft. .FRI NIGHT...N winds 10 to 15 kt. Seas 5 to 7 ft. .SAT...N winds less than 10 kt. Seas 4 to 6 ft. .SAT NIGHT...N winds less than 10 kt. Seas 4 to 5 ft. .SUN...N winds less than 10 kt. Seas 3 to 5 ft. .SUN NIGHT...N winds less than 10 kt. Seas 4 to 6 ft. .MON...N winds less than 10 kt. Seas 4 to 6 ft. .MON NIGHT...N winds 10 to 15 kt, shifting to NE after midnight. Seas 4 to 6 ft. .TUE...N winds less than 10 kt. Seas 5 to 7 ft. .TUE NIGHT...NE winds 10 to 15 kt. Seas 5 to 7 ft. Caribbean between 64W and 72W .TONIGHT...E winds 15 to 25 kt Gulf of Venezuela, and E 10 to 20 kt elsewhere. Seas 3 to 5 ft Gulf of Venezuela, and 6 to 8 ft elsewhere. .FRI...E winds 10 to 20 kt. Seas 3 to 4 ft Gulf of Venezuela, and 6 to 8 ft elsewhere. .FRI NIGHT...E winds 10 to 20 kt Gulf of Venezuela, and E 10 to 15 kt elsewhere. Seas 5 to 7 ft. .SAT...E winds 10 to 15 kt. Seas 3 to 4 ft Gulf of Venezuela, and 5 to 6 ft elsewhere. .SAT NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .SUN...E winds 10 to 15 kt. Seas 4 to 5 ft. .SUN NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. .MON...E winds 10 to 15 kt. Seas 5 to 6 ft. .MON NIGHT...E winds 10 to 20 kt. Seas 5 to 7 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. Offshore Leeward Islands and adjacent ATLC waters from 15N to 19N W of 55W .TONIGHT...E winds 10 to 20 kt. Seas 7 to 10 ft. .FRI...E winds 10 to 20 kt. Seas 7 to 10 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 6 to 9 ft. .SAT...E winds 10 to 15 kt. Seas 6 to 8 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 5 to 7 ft. .TUE NIGHT...E winds 10 to 15 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 20 kt. Seas 6 to 9 ft. .FRI...E winds 10 to 15 kt. Seas 6 to 9 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 6 to 8 ft. .SAT...E winds 10 to 15 kt. Seas 6 to 8 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 6 to 8 ft. .MON NIGHT...E winds 10 to 15 kt. Seas 6 to 8 ft. .TUE...E winds 10 to 15 kt. Seas 6 to 8 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 broad fetch of fresh NE to E winds will continue tonight north of 15N and between the SE Bahamas and 55W, as a tight pressure gradient prevails between high pressure in the north-central Atlantic and the Colombian low. Very rough seas to 11 ft will occur through early tonight from 18N to 24N east of 68W. Rough seas north of 15N this evening will begin to slowly subside from north to south late tonight through early Sat. South of 15N, moderate to locally fresh trades and rough seas will diminish to moderate speeds on Fri. A cold front will stall off the coast of the southeastern United States tonight, then enter the NW zones off of Florida on Fri, and reach from 31N68W to western Cuba by Sat morning, then weaken from 31N59W to near the Windward Passage Sun morning. Fresh to strong W to NW winds will occur behind the front N of 28N. Looking ahead, widespread fresh to locally strong NE winds and rough seas will redevelop across areas north of 20N Sun night through early next week as strong high pressure builds across the region behind the weakening front. ATLC waters from 27N to 31N W of 77W .TONIGHT...NW winds less than 10 kt. Seas 5 to 6 ft. .FRI...W winds 10 to 20 kt. Seas 5 to 7 ft. .FRI NIGHT...NW winds 15 to 25 kt. Seas 6 to 9 ft. .SAT...NW winds 10 to 15 kt. Seas 6 to 8 ft. .SAT NIGHT...N winds 10 to 15 kt. Seas 6 to 7 ft. .SUN...NE winds 10 to 15 kt. Seas 6 to 7 ft. .SUN NIGHT...NE winds 10 to 20 kt. Seas 7 to 8 ft. .MON...E winds 10 to 20 kt. Seas 6 to 9 ft. .MON NIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft. .TUE...E winds 10 to 20 kt. Seas 6 to 8 ft. .TUE NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. ATLC waters from 27N to 31N between 65W and 77W .TONIGHT...S winds 10 to 15 kt. Seas 6 to 8 ft. .FRI...W winds 10 to 15 kt W of 70W, and S 15 to 20 kt elsewhere. Seas 6 to 8 ft. .FRI NIGHT...W winds 10 to 20 kt. Seas 6 to 9 ft. .SAT...NW winds 10 to 20 kt. Seas 7 to 9 ft. .SAT NIGHT...N winds 10 to 15 kt. Seas 7 to 9 ft. .SUN...N winds 10 to 15 kt. Seas 7 to 10 ft. .SUN NIGHT...N winds 10 to 15 kt. Seas 8 to 10 ft. .MON...NE winds 10 to 15 kt. Seas 7 to 9 ft. .MON NIGHT...NE winds 10 to 15 kt. Seas 6 to 8 ft. .TUE...NE winds 10 to 15 kt. Seas 6 to 8 ft. .TUE NIGHT...NE winds 10 to 15 kt. Seas 5 to 7 ft. Bahamas N of 22N .TONIGHT...NE winds less than 10 kt. Seas 3 to 5 ft. .FRI...N winds less than 10 kt. Seas 3 to 5 ft. .FRI NIGHT...N winds 10 to 15 kt. Seas 3 to 5 ft. .SAT...N winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 3 to 5 ft. .SAT NIGHT...N winds less than 10 kt. Seas 3 to 5 ft. .SUN...NE winds less than 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 3 to 5 ft. .SUN NIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. .MON...E winds 10 to 20 kt. Seas 5 to 7 ft. .MON NIGHT...E winds 15 to 25 kt. Seas 5 to 7 ft. .TUE...E winds 10 to 20 kt. Seas 6 to 8 ft. .TUE NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. ATLC waters from 22N to 27N between 65W and the Bahamas .TONIGHT...SE winds 10 to 20 kt. Seas 7 to 10 ft. .FRI...S winds 10 to 15 kt W of 70W, and SE 10 to 20 kt elsewhere. Seas 7 to 9 ft. .FRI NIGHT...W of 70W, NW winds less than 10 kt, increasing to 10 to 15 kt after midnight. Elsewhere, S winds 10 to 15 kt. Seas 6 to 8 ft. .SAT...W of 70W, NW winds 10 to 15 kt. Elsewhere, SW winds 10 to 15 kt, shifting to W in the afternoon. Seas 6 to 8 ft. .SAT NIGHT...N winds 10 to 15 kt, diminishing to less than 10 kt after midnight. Seas 5 to 7 ft. .SUN...N winds less than 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 5 to 7 ft. .SUN NIGHT...NE winds 10 to 15 kt. Seas 6 to 8 ft. .MON...NE winds 15 to 20 kt. Seas 7 to 10 ft. .MON NIGHT...NE winds 10 to 20 kt. Seas 8 to 10 ft. .TUE...NE winds 10 to 20 kt. Seas 7 to 10 ft. .TUE NIGHT...NE winds 10 to 15 kt. Seas 7 to 9 ft. ATLC waters S of 22N W of 65W .TONIGHT...SE winds 10 to 20 kt. Seas 6 to 9 ft. .FRI...SE winds 10 to 20 kt. Seas 6 to 8 ft. .FRI NIGHT...S winds 10 to 15 kt. Seas 5 to 7 ft. .SAT...N winds less than 10 kt. Seas 4 to 6 ft. .SAT NIGHT...NE winds less than 10 kt. Seas 4 to 6 ft. .SUN...NE winds less than 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 4 to 6 ft. .SUN NIGHT...NE winds 10 to 20 kt. Seas 5 to 7 ft. .MON...NE winds 10 to 20 kt. Seas 6 to 8 ft. .MON NIGHT...NE winds 15 to 25 kt. Seas 7 to 10 ft. .TUE...NE winds 10 to 20 kt. Seas 7 to 10 ft. .TUE NIGHT...NE winds 10 to 20 kt. Seas 7 to 9 ft. ATLC waters from 19N to 22N between 55W and 65W .TONIGHT...E winds 15 to 20 kt. Seas 9 to 11 ft. .FRI...E winds 10 to 20 kt. Seas 8 to 10 ft. .FRI NIGHT...E winds 10 to 20 kt. Seas 7 to 10 ft. .SAT...SE winds 10 to 15 kt. Seas 7 to 9 ft. .SAT NIGHT...SE winds 10 to 15 kt. Seas 6 to 8 ft. .SUN...SE winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 6 to 8 ft. .SUN NIGHT...E winds 10 kt. Seas 5 to 7 ft. .MON...E winds 10 to 15 kt. Seas 5 to 6 ft. .MON NIGHT...NE winds 10 to 15 kt. Seas 6 to 8 ft. .TUE...NE winds 10 to 15 kt. Seas 6 to 9 ft. .TUE NIGHT...NE winds 10 to 15 kt. Seas 6 to 9 ft.