413 FZNT31 KNHC 042045 OFFN20 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 345 PM EST Thu Jan 4 2024 Marine Weather HF Voice Broadcast for the Tropical N Atlantic from 07N to 22N between 55W and 64W, the SW N Atlantic S of 31N W of 65W including 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 between 55W and 64W .SYNOPSIS...A tight pressure gradient between high pressure centered north f the basin and lower pressure over South America will support fresh to strong winds off Colombia through the forecast period. South winds will increase to fresh to strong in the northwestern Caribbean Fri night into early Sat as a cold front passes north of the area. NW Caribbean W of 85W .TONIGHT...NE to E winds less than 10 kt. Seas 2 to 3 ft. .FRI...SE winds 10 to 20 kt. Seas 3 to 5 ft. .FRI NIGHT...SE winds 10 to 20 kt. Seas 5 to 7 ft. .SAT...SE winds 10 to 20 kt. Seas 5 to 7 ft. .SAT NIGHT...SE winds 10 to 15 kt. Seas 3 to 5 ft. .SUN...SE winds 10 to 15 kt. Seas 3 to 5 ft. .SUN NIGHT...SE winds 10 to 15 kt. Seas 3 to 4 ft. .MON...SE winds 10 to 20 kt. Seas 4 to 6 ft. .MON NIGHT...SE winds 15 to 25 kt. Seas 5 to 7 ft. .TUE...S winds 15 to 25 kt. Seas 6 to 8 ft. .TUE NIGHT...SE winds less than 10 kt, shifting to N after midnight. Seas 4 to 6 ft. Caribbean N of 15N between 72W and 85W .TONIGHT...E winds 10 to 15 kt S of 18N, and NE less than 10 kt elsewhere. Seas 3 to 5 ft S of 18N, and 2 ft or less elsewhere. .FRI...E winds 10 to 15 kt. S of 18N, seas 3 to 5 ft. Elsewhere, seas 2 to 3 ft. .FRI NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. .SAT...SE winds 10 to 20 kt. Seas 4 to 6 ft. .SAT NIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft. .SUN...E winds 10 to 20 kt. Seas 4 to 6 ft. .SUN NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. .MON...E winds 10 to 20 kt. Seas 5 to 7 ft. .MON NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. .TUE...SE winds 10 to 20 kt. Seas 6 to 8 ft. .TUE NIGHT...SE winds 10 to 20 kt. Seas 6 to 8 ft. Caribbean from 11N to 15N W of 72W .TONIGHT...E winds 20 to 25 kt within 90 nm of coast of Colombia, and NE 10 to 20 kt elsewhere. Seas 4 to 6 ft. .FRI...E winds 20 to 25 kt within 90 nm of coast of Colombia, and E 10 to 20 kt elsewhere. Seas 4 to 6 ft. .FRI NIGHT...E winds 20 to 25 kt within 90 nm of coast of Colombia, and E 10 to 20 kt elsewhere. Seas 5 to 7 ft. .SAT...E winds 20 to 25 kt within 90 nm of coast of Colombia, and E 10 to 20 kt elsewhere. 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 15 to 25 kt. Seas 6 to 9 ft. .MON...E winds 15 to 25 kt. Seas 7 to 10 ft. .MON NIGHT...E winds 15 to 25 kt. Seas 7 to 10 ft. .TUE...E winds 15 to 25 kt. Seas 7 to 10 ft. .TUE NIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft. SW Caribbean S of 11N .TONIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. .FRI...NE winds 10 to 15 kt. Seas 4 to 6 ft. .FRI NIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. .SAT...NE winds 10 to 15 kt. Seas 5 to 7 ft. .SAT NIGHT...NE winds 10 to 15 kt. Seas 5 to 7 ft. .SUN...NE winds 10 to 15 kt. Seas 5 to 7 ft. .SUN NIGHT...NE winds 10 to 20 kt. Seas 6 to 8 ft. .MON...NE winds 10 to 20 kt. Seas 7 to 10 ft. .MON NIGHT...NE winds 10 to 20 kt. Seas 6 to 9 ft. .TUE...N winds less than 10 kt. Seas 6 to 9 ft. .TUE NIGHT...Variable winds less than 10 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. .FRI...E winds 15 to 20 kt Gulf of Venezuela, and E 10 to 15 kt elsewhere. Seas 3 to 5 ft. .FRI NIGHT...E winds 15 to 25 kt Gulf of Venezuela, and E 10 to 20 kt elsewhere. Seas 4 to 6 ft. .SAT...E winds 15 to 25 kt Gulf of Venezuela, and E 10 to 20 kt elsewhere. 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 20 kt. Seas 4 to 6 ft. .MON...E winds 10 to 20 kt. Seas 5 to 7 ft. .MON NIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft. .TUE...E winds 10 to 20 kt. Seas 6 to 8 ft. .TUE 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 .TONIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .FRI...E winds 10 to 15 kt. Seas 4 to 6 ft. .FRI NIGHT...E winds less than 10 to 15 kt. Seas 4 to 6 ft. .SAT...E winds 10 to 15 kt. Seas 5 to 7 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 6 to 8 ft. .MON...E winds 10 to 15 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 20 kt. Seas 6 to 8 ft. Offshore Windward Islands and adjacent ATLC waters from 07N to 15N W of 55W .TONIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .FRI...E winds 10 to 15 kt. Seas 4 to 6 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. .SAT...E winds 10 to 15 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 6 to 8 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...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 20 kt. Seas 6 to 8 ft. Synopsis for the the SW N Atlantic including the Bahamas .SYNOPSIS...Very rough seas N of 28N and E of 60W will shift east of the area by early this evening. A cold front stretching from near 31N73W to Palm Beach, Florida will reach from just west of Bermuda to the NE Bahamas tonight, then move across the southeastern waters on Fri. Strong winds and rough seas will impact the northern waters on both sides of this front. A third and stronger cold front is expected to move across the waters off northeast Florida Sat, possibly preceded by gale force southerly winds. This front is forecast to reach from near 31N74W to South Florida early Sun, from near 31N59W to the central Bahamas early Mon and from near 31N43W to near 23N58W early Tue. Fresh to strong winds are expected on either side of this front early next week. On Tue and Tue night, gale force southerly winds are expected to precede yet another strong cold front over the waters E of northeast Florida, while strong to near gale force southerly winds are likely elsewhere over most of the western forecast waters. ATLC waters from 27N to 31N W of 77W ...GALE WARNING W OF 79W SAT... ...GALE CONDITIONS POSSIBLE TUE AND TUE NIGHT.... .TONIGHT...NE winds 10 to 20 kt. Seas 5 to 7 ft. .FRI...E winds 10 to 15 kt. Seas 5 to 6 ft. .FRI NIGHT...SE winds 15 to 25 kt. Seas 5 to 7 ft. .SAT...S winds 20 to 30 kt. Seas 7 to 10 ft. .SAT NIGHT...SW winds 10 to 20 kt. Seas 7 to 10 ft. .SUN...NW winds 10 to 20 kt. Seas 5 to 7 ft. .SUN NIGHT...N winds 10 to 15 kt. Seas 4 to 6 ft. .MON...E winds 10 to 20 kt. Seas 4 to 6 ft. .MON NIGHT...W of 79W, SE winds 25 to 30 kt. E of 79W, E to SE winds 20 kt, becoming SE 25 to 30 kt late. Seas 4 to 6 ft, building to 6 to 9 ft in E to SE swell late. .TUE...S winds 30 to 35 kt. Seas 9 to 14 ft. .TUE NIGHT...SW to W winds 25 to 30 kt W of 79W, and SW 30 to 35 kt E of 79W. Seas 12 to 18 ft in S swell. ATLC waters from 27N to 31N between 65W and 77W ...GALE CONDITIONS POSSIBLE E OF 75W TUE NIGHT... .TONIGHT...NW winds 15 to 25 kt. Seas 7 to 10 ft. .FRI...W of 70W, NE winds 10 to 15 kt. Elsewhere, N winds 15 to 25 kt, diminishing to 10 to 15 kt in the afternoon. Seas 7 to 10 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 6 to 8 ft W of 70W, and 8 to 11 ft elsewhere. .SAT...S winds 15 to 25 kt W of 70W, and SE 10 to 15 kt elsewhere. Seas 6 to 9 ft. .SAT NIGHT...S winds 10 to 20 kt. Seas 6 to 9 ft. .SUN...SW winds 10 to 20 kt. Seas 6 to 9 ft. .SUN NIGHT...NW winds 10 to 20 kt. Seas 6 to 9 ft. .MON...NE winds 10 to 15 kt. Seas 6 to 9 ft. .MON NIGHT...E winds 10 to 20 kt. Seas 7 to 10 ft. .TUE...SE to S winds 15 to 25 kt, except 25 to 30 kt N of 29N. Seas 8 to 11 ft, except 9 to 13 ft N of 29N. .TUE NIGHT...S to SW winds 25 to 30 kt W of 75W, and S 25 to 35 kt E of 75W. Seas 10 to 16 ft. Bahamas N of 22N .TONIGHT...NW to N winds less than 10 kt. Seas 2 to 3 ft. .FRI...E winds 10 to 15 kt. Seas 3 to 5 ft. .FRI NIGHT...SE winds 10 to 15 kt. Seas 3 to 5 ft. .SAT...SE winds 10 to 15 kt. Seas 3 to 5 ft. .SAT NIGHT...S winds 10 to 15 kt. Seas 3 to 54 ft. .SUN...SW winds less than 10 kt. Seas 2 ft or less. .SUN NIGHT...NE winds less than 10 kt. Seas 2 ft or less, building to 3 ft after midnight. .MON...E winds 10 to 15 kt. Seas 3 to 4 ft. .MON NIGHT...SE winds 10 to 20 kt. Seas 4 to 6 ft. .TUE...SE winds 10 to 20 kt. Seas 4 to 6 ft. .TUE NIGHT...S winds 10 to 20 kt. Seas 3 to 5 ft. ATLC waters from 22N to 27N between 65W and the Bahamas .TONIGHT...W winds 10 to 15 kt. Seas 4 to 6 ft. .FRI...N winds 10 to 15 kt. Seas 5 to 7 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. .SAT...E winds 10 to 15 kt. Seas 6 to 7 ft. .SAT NIGHT...SE winds 10 to 15 kt. Seas 5 to 7 ft. .SUN...S winds 10 kt. Seas 5 to 7 ft. .SUN NIGHT...SW winds less than 10 kt, shifting to N after midnight. Seas 4 to 6 ft. .MON...NE winds 10 to 15 kt. Seas 4 to 5 ft. .MON NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. .TUE...E winds 15 to 20 kt. Seas 6 to 9 ft. .TUE NIGHT...SE winds 15 to 20 kt. Seas 7 to 10 ft. ATLC waters S of 22N W of 65W .TONIGHT...SE winds less than 10 kt in the evening, becoming variable winds less than 10 kt. Seas 3 to 5 ft. .FRI...NE winds less than 10 kt. Seas 3 to 5 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 3 to 5 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 less than 10 kt. Seas 3 to 5 ft. .SUN NIGHT...E winds less than 10 kt. Seas 3 to 5 ft. .MON...E winds 10 to 15 kt. Seas 4 to 6 ft. .MON NIGHT...E winds 10 to 20 kt. Seas 4 to 5 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. ATLC waters from 19N to 22N between 55W and 65W .TONIGHT...SE winds less than 10 kt. Seas 6 to 7 ft. .FRI...S winds less than 10 kt. Seas 5 to 7 ft. .FRI NIGHT...Variable winds less than 10 kt, becoming NE less than 10 kt late. Seas 5 to 6 ft. .SAT...E winds 10 kt. Seas 5 to 6 ft. .SAT NIGHT...E winds 10 to 15 kt. Seas 6 to 8 ft. .SUN...E winds 10 to 15 kt. Seas 6 to 9 ft. .SUN NIGHT...E winds 10 kt. Seas 7 to 9 ft. .MON...E winds less than 10 kt. Seas 6 to 8 ft. .MON NIGHT...NE winds 10 to 15 kt. Seas 5 to 7 ft. .TUE...E winds 10 to 20 kt. Seas 6 to 7 ft. .TUE NIGHT...E winds 15 to 20 kt. Seas 7 to 10 ft.