000 FZNT31 KNHC 190916 OFFN20 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 416 AM 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 through the Atlantic Passages through Fri as a strong pressure gradient between high pressure in the northern Atlantic and the Colombian low prevails. Winds will pulse to strong speeds offshore of Colombia and Venezuela this morning and again tonight. Seas of 4 to 7 ft will prevail over the aforementioned areas, with locally rough seas of 8 to 9 ft occurring near strong winds in the south- central Caribbean. Elsewhere, gentle to moderate NE winds and seas of 2 to 4 ft are expected in the northwestern basin today. High pressure building over the Gulf of Mexico this weekend will lead to generally moderate to locally fresh E to NE winds across the basin through the weekend. Looking ahead, a cold front moving off the southeastern United States will promote fresh to locally strong NE winds across the Caribbean Sea early next week. NW Caribbean W of 85W .TODAY...N winds less than 10 kt. Seas 3 ft. .TONIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. .FRI...N winds 10 to 15 kt. Seas 3 to 4 ft. .FRI NIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft. .SAT...NE winds 10 to 15 kt. Seas 3 to 5 ft. .SAT NIGHT...NE winds 10 to 15 kt. Seas 4 to 5 ft. .SUN...NE winds 10 to 15 kt. Seas 4 to 5 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 6 ft. .MON NIGHT...NE winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 4 to 5 ft. Caribbean N of 15N between 72W and 85W .TODAY...NE winds 10 to 15 kt S of 18N, and NE less than 10 kt elsewhere. Seas 4 to 6 ft. .TONIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft. .FRI...NE winds 10 to 15 kt. Seas 3 to 5 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 4 to 6 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. Caribbean from 11N to 15N W of 72W .TODAY...NE winds 10 to 20 kt. Seas 6 to 8 ft. .TONIGHT...NE winds 10 to 20 kt. Seas 5 to 7 ft. .FRI...E winds 10 to 20 kt within 90 nm of coast of Colombia, and NE 10 to 15 kt elsewhere. Seas 5 to 7 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 6 ft. .SUN NIGHT...NE winds 10 to 20 kt. Seas 5 to 6 ft. .MON...NE winds 10 to 15 kt. Seas 5 to 6 ft. .MON NIGHT...NE winds 10 to 20 kt. Seas 5 to 7 ft. SW Caribbean S of 11N .TODAY...N winds 10 to 15 kt. Seas 6 to 8 ft. .TONIGHT...NE winds 10 to 15 kt. Seas 5 to 7 ft. .FRI...N winds 10 to 15 kt. Seas 5 to 7 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 3 to 5 ft. .SUN...N winds less than 10 kt. Seas 3 to 5 ft. .SUN NIGHT...N winds less than 10 kt. Seas 3 to 5 ft. .MON...N winds less than 10 kt. Seas 3 to 5 ft. .MON NIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. Caribbean between 64W and 72W .TODAY...E winds 10 to 20 kt. Seas 3 to 5 ft Gulf of Venezuela, and 6 to 8 ft elsewhere. .TONIGHT...E winds 10 to 20 kt. 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 5 to 7 ft elsewhere. .FRI NIGHT...E winds 15 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 4 to 6 ft. .SAT NIGHT...E winds 10 to 15 kt. Seas 4 to 5 ft. .SUN...E winds 10 to 15 kt. Seas 4 to 5 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 20 kt. Seas 5 to 7 ft. Offshore Leeward Islands and adjacent ATLC waters from 15N to 19N W of 55W .TODAY...E winds 10 to 20 kt. Seas 8 to 11 ft. .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 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. Offshore Windward Islands and adjacent ATLC waters from 07N to 15N W of 55W .TODAY...E winds 10 to 20 kt. Seas 6 to 9 ft. .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 5 to 7 ft. .MON NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. Synopsis for the the SW N Atlantic including the Bahamas .SYNOPSIS...A wide swath of fresh NE to SE winds will continue today for areas north of 15N and west of 55W as a tight pressure gradient prevails between high pressure in the central Atlantic and the Colombian low. Strong E to NE winds will occur through this morning from 18N to 27N east of 67W. Very rough seas of 12 to 13 ft will occur near the area of strongest winds. Rough seas in excess of 8 ft will prevail north of 15N today before seas 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 prevail today before winds diminish to moderate speeds on Fri. A cold front will move off the coast of the southeastern United States late tonight and stall, then enter the NW zones off of Florida Fri, and reach from 31N68W to western Cuba by Sat morning. Fresh to strong N to NW winds will occur behind the front. Looking ahead, widespread fresh to locally strong NE winds and rough seas will redevelop across areas north of 20N early next week. ATLC waters from 27N to 31N W of 77W .TODAY...NW winds less than 10 kt. Seas 5 to 7 ft. .TONIGHT...N winds 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 8 ft. .SAT...N winds 10 to 15 kt. Seas 6 to 8 ft. .SAT NIGHT...N winds 10 kt. Seas 5 to 7 ft. .SUN...NE winds 10 to 15 kt. Seas 6 to 9 ft. .SUN NIGHT...NE winds 15 to 20 kt. Seas 7 to 10 ft. .MON...E winds 15 to 20 kt. Seas 7 to 10 ft. .MON NIGHT...E winds 15 to 20 kt. Seas 7 to 9 ft. ATLC waters from 27N to 31N between 65W and 77W .TODAY...S winds 10 to 15 kt. Seas 6 to 9 ft. .TONIGHT...S winds 10 to 15 kt. Seas 6 to 8 ft. .FRI...W winds 10 to 15 kt W of 70W, and S 10 to 20 kt elsewhere. Seas 6 to 7 ft. .FRI NIGHT...W winds 10 to 20 kt. Seas 6 to 8 ft. .SAT...NW winds 10 to 20 kt. Seas 6 to 9 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...NE winds 15 to 20 kt. Seas 7 to 10 ft. .MON...NE winds 15 to 20 kt. Seas 8 to 10 ft. .MON NIGHT...NE winds 10 to 20 kt. Seas 8 to 9 ft. Bahamas N of 22N .TODAY...E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 4 to 6 ft. .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...NE winds less than 10 kt. Seas 3 to 4 ft. .SUN...NE winds less than 10 kt. Seas 3 to 4 ft. .SUN NIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft. .MON...E winds 10 to 20 kt. Seas 4 to 6 ft. .MON NIGHT...E winds 15 to 25 kt. Seas 5 to 7 ft. ATLC waters from 22N to 27N between 65W and the Bahamas .TODAY...SE winds 10 to 20 kt W of 70W, and SE 15 to 20 kt elsewhere. Seas 8 to 11 ft. .TONIGHT...SE winds 10 to 15 kt W of 70W, and SE 15 to 20 kt elsewhere. Seas 7 to 10 ft. .FRI...SE winds 10 to 15 kt. Seas 6 to 9 ft. .FRI NIGHT...W of 70W, W winds less than 10 kt, shifting to NW after midnight. Elsewhere, S winds 10 to 15 kt. Seas 6 to 8 ft. .SAT...W winds 10 to 15 kt, shifting to NW in the afternoon. Seas 6 to 7 ft. .SAT NIGHT...N winds less than 10 kt. Seas 5 to 6 ft. .SUN...N winds less than 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 5 to 6 ft. .SUN NIGHT...NE winds 10 to 15 kt. Seas 5 to 7 ft. .MON...NE winds 15 to 20 kt. Seas 6 to 9 ft. .MON NIGHT...NE winds 15 to 20 kt. Seas 8 to 10 ft. ATLC waters S of 22N W of 65W .TODAY...E winds 10 to 20 kt. Seas 8 to 11 ft. .TONIGHT...E winds 10 to 20 kt. Seas 7 to 10 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...NW 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 3 to 5 ft. .SUN NIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. .MON...NE winds 10 to 20 kt. Seas 5 to 7 ft. .MON NIGHT...NE winds 10 to 20 kt. Seas 6 to 9 ft. ATLC waters from 19N to 22N between 55W and 65W .TODAY...E winds 15 to 25 kt. Seas 10 to 12 ft. .TONIGHT...E winds 15 to 20 kt. Seas 9 to 11 ft. .FRI...E winds 15 to 20 kt. Seas 8 to 10 ft. .FRI NIGHT...E winds 15 to 20 kt. Seas 8 to 9 ft. .SAT...SE winds 10 to 15 kt. Seas 7 to 8 ft. .SAT NIGHT...SE winds 10 to 15 kt. Seas 6 to 7 ft. .SUN...SE winds 10 to 15 kt. Seas 5 to 7 ft. .SUN NIGHT...E winds 10 kt. Seas 5 to 6 ft. .MON...E winds 10 kt. Seas 5 to 6 ft. .MON NIGHT...NE winds 10 to 15 kt. Seas 6 to 8 ft.