000 FZNT31 KNHC 200845 OFFN20 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 345 AM EST Fri Dec 20 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 E to NE winds will prevail across the south- central through eastern Caribbean, as well as through the Atlantic Passages this morning as a strong pressure gradient prevails between the Colombian low and high pressure in the central Atlantic. Pulsing strong winds in the Gulf of Venezuela and offshore of northwestern Colombia will occur this morning, and locally rough seas will be possible near these winds. Moderate to locally fresh NE to E winds will dominate the basin this weekend as ridging builds over the Caribbean. Looking ahead, high pressure in the central Atlantic will slowly move eastward early next week and a series of cold front will move off the southeastern United States. A building pressure gradient between these features will lead to fresh to locally strong NE to E winds across much of the Caribbean. NW Caribbean W of 85W .TODAY...N winds 10 to 15 kt. Seas 3 to 4 ft. .TONIGHT...N winds 10 to 15 kt. Seas 3 to 5 ft. .SAT...N winds 10 to 15 kt. Seas 3 to 5 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 3 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 .TODAY...NE winds 10 to 15 kt. Seas 3 to 5 ft. .TONIGHT...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 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 4 to 6 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 .TODAY...NE winds 10 to 15 kt. Seas 5 to 7 ft. .TONIGHT...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 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 6 ft. .MON...NE winds 10 to 20 kt. Seas 5 to 6 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...NE winds 10 to 20 kt. Seas 5 to 7 ft. SW Caribbean S of 11N .TODAY...N winds 10 to 15 kt. Seas 5 to 7 ft. .TONIGHT...N winds 10 to 15 kt. Seas 4 to 6 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...N winds 10 to 15 kt. Seas 4 to 6 ft. .TUE...N winds less than 10 kt. Seas 5 to 7 ft. .TUE NIGHT...N winds less than 10 kt, shifting to NE after midnight. Seas 5 to 7 ft. Caribbean between 64W and 72W .TODAY...E winds 10 to 20 kt. Seas 3 to 4 ft Gulf of Venezuela, and 5 to 7 ft elsewhere. .TONIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft Gulf of Venezuela, and 5 to 7 ft elsewhere. .SAT...E winds 10 to 15 kt. Seas 3 ft Gulf of Venezuela, and 4 to 6 ft elsewhere. .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. .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 .TODAY...E winds 10 to 20 kt. Seas 6 to 9 ft. .TONIGHT...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. .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 .TODAY...E winds 10 to 15 kt. Seas 6 to 9 ft. .TONIGHT...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 6 to 8 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. Synopsis for the the SW N Atlantic including the Bahamas .SYNOPSIS...Widespread fresh to locally strong E to NE winds occurring north of 15N and east of the Bahamas will slowly diminish through tonight as high pressure in the central Atlantic weakens and drifts eastward. Rough seas in the aforementioned region will slowly subside from north to south through early Sat. A cold front extending from the Florida Straits to 31N76W will decrease in forward speed today before reaching from 31N68W to western Cuba by Sat morning, then weaken from 31N59W to central Cuba Sun morning. Fresh to strong W to NW winds and rough seas 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 .TODAY...NW winds 10 to 20 kt. Seas 5 to 7 ft. .TONIGHT...NW winds 15 to 25 kt. Seas 6 to 9 ft. .SAT...N winds 10 to 15 kt. Seas 6 to 8 ft. .SAT NIGHT...N winds 10 to 15 kt. Seas 5 to 7 ft. .SUN...NE winds 10 to 15 kt. Seas 6 to 7 ft. .SUN NIGHT...NE winds 10 to 20 kt. Seas 6 to 8 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. .TUE...E winds 10 to 20 kt. Seas 6 to 9 ft. .TUE NIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft. ATLC waters from 27N to 31N between 65W and 77W .TODAY...W winds 10 to 15 kt W of 70W, and S 10 to 20 kt elsewhere. Seas 6 to 8 ft. .TONIGHT...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 6 to 9 ft. .SUN...N winds 10 to 15 kt. Seas 7 to 9 ft. .SUN NIGHT...N winds 10 to 20 kt. Seas 7 to 9 ft. .MON...NE winds 10 to 15 kt. Seas 7 to 9 ft. .MON NIGHT...NE winds 10 to 15 kt. Seas 6 to 9 ft. .TUE...NE winds 10 to 15 kt. Seas 5 to 7 ft. .TUE NIGHT...NE winds 10 to 15 kt. Seas 5 to 7 ft. Bahamas N of 22N .TODAY...N winds less than 10 kt. Seas 3 to 5 ft. .TONIGHT...N winds less than 10 kt, increasing to 10 to 15 kt after midnight. 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, increasing to 10 to 15 kt in the afternoon. 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 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 4 to 6 ft. ATLC waters from 22N to 27N between 65W and the Bahamas .TODAY...SE winds 10 to 15 kt. Seas 6 to 9 ft. .TONIGHT...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, N winds 10 to 15 kt. Elsewhere, SW winds 10 to 15 kt, shifting to W in the afternoon. Seas 5 to 7 ft. .SAT NIGHT...N winds 10 to 15 kt W of 70W, and N less than 10 kt elsewhere. 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 15 to 25 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 6 to 9 ft. ATLC waters S of 22N W of 65W .TODAY...SE winds 10 to 20 kt. Seas 5 to 7 ft. .TONIGHT...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 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 6 to 8 ft. .MON NIGHT...NE winds 10 to 20 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 .TODAY...E winds 10 to 20 kt. Seas 8 to 10 ft. .TONIGHT...E winds 10 to 20 kt. Seas 7 to 9 ft. .SAT...SE winds 10 to 15 kt. Seas 6 to 8 ft. .SAT NIGHT...SE winds 10 to 15 kt. Seas 5 to 7 ft. .SUN...SE winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 5 to 7 ft. .SUN NIGHT...E winds 10 to 15 kt. Seas 5 to 6 ft. .MON...E winds 10 to 15 kt. Seas 5 to 6 ft. .MON NIGHT...NE winds 10 to 15 kt. Seas 5 to 7 ft. .TUE...NE winds 10 to 15 kt. Seas 6 to 9 ft. .TUE NIGHT...NE winds 10 to 15 kt. Seas 6 to 8 ft.