617 FZNT31 KNHC 072120 OFFN20 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 420 PM EST Sun Jan 7 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...The pressure gradient between high pressure centered north of the basin and lower pressure over South America will support strong winds in the south-central Caribbean through Tue night, pulsing to near-gale force at night offshore Colombia. Winds near the coast of Colombia will reach gale force tonight. Southeast to south winds in the northwestern Caribbean will increase to fresh to strong Mon night through Tue as a strong cold front traverses the Gulf of Mexico. The front will weaken significantly as it reaches the Yucatan Channel Tue night, and winds in the NW Caribbean will diminish Wed and Wed night as high pressure shifts eastward across the central Gulf of Mexico. In the central Caribbean, winds will diminish to mainly fresh speeds by midweek. Southeasterly winds begin to increase over the western Caribbean Thu, reaching fresh to strong speeds Fri and Fri night. NW Caribbean W of 85W .TONIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .MON...SE winds 10 to 20 kt. Seas 5 to 7 ft. .MON NIGHT...SE winds 15 to 25 kt. Seas 6 to 8 ft. .TUE...SE winds 15 to 25 kt. Seas 6 to 8 ft. .TUE NIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft. .WED...N to NE winds 10 to 15 kt. Seas 4 to 6 ft. .WED NIGHT...SE winds less than 10 kt. Seas 4 to 6 ft. .THU...SE winds 10 to 15 kt. Seas 3 to 5 ft. .THU NIGHT...SE winds 10 to 20 kt. Seas 4 to 6 ft. .FRI...SE winds 10 to 20 kt. Seas 5 to 7 ft. .FRI NIGHT...SE winds 15 to 25 kt. Seas 5 to 7 ft. Caribbean N of 15N between 72W and 85W .TONIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. .MON...E winds 10 to 20 kt. Seas 6 to 9 ft S of 18N, and 4 to 6 ft elsewhere. .MON NIGHT...E winds 15 to 25 kt S of 18N, and E 10 to 20 kt elsewhere. Seas 6 to 9 ft S of 18N, and 5 to 7 ft elsewhere. .TUE...E winds 15 to 25 kt S of 18N, and SE 10 to 20 kt elsewhere. Seas 7 to 10 ft S of 18N, and 5 to 7 ft elsewhere. .TUE NIGHT...SE winds 10 to 20 kt. Seas 6 to 9 ft. .WED...SE winds 10 to 20 kt. Seas 6 to 8 ft. .WED NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. .THU...E winds 10 to 20 kt. Seas 5 to 7 ft. .THU NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. .FRI...SE winds 10 to 20 kt. Seas 5 to 7 ft. .FRI NIGHT...SE winds 10 to 20 kt. Seas 4 to 6 ft. Caribbean from 11N to 15N W of 72W ...GALE WARNING... ...GALE WARNING... .TONIGHT...E winds 20 to 30 kt within 90 nm of coast of Colombia, and NE 15 to 25 kt elsewhere. Seas 7 to 10 ft. .MON...E winds 15 to 25 kt. Seas 8 to 11 ft. .MON NIGHT...E winds 25 to 30 kt within 90 nm of coast of Colombia, and E 15 to 25 kt elsewhere. Seas 7 to 10 ft. .TUE...E winds 15 to 25 kt. Seas 7 to 10 ft. .TUE NIGHT...E winds 15 to 25 kt. Seas 7 to 10 ft. .WED...E winds 10 to 20 kt. Seas 7 to 10 ft. .WED NIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft. .THU...E winds 10 to 20 kt. Seas 6 to 9 ft. .THU NIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft. .FRI...E winds 10 to 20 kt. Seas 6 to 9 ft. .FRI NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. SW Caribbean S of 11N .TONIGHT...NE winds 15 to 25 kt. Seas 7 to 10 ft. .MON...NE winds 10 to 20 kt. Seas 8 to 11 ft. .MON NIGHT...NE winds 10 to 15 kt. Seas 7 to 10 ft. .TUE...NE winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 7 to 10 ft. .TUE NIGHT...N winds less than 10 kt. Seas 6 to 8 ft. .WED...Variable winds less than 10 kt. Seas 5 to 7 ft. .WED NIGHT...N winds less than 10 kt. Seas 4 to 6 ft. .THU...NE winds less than 10 kt. Seas 5 to 7 ft. .THU NIGHT...NE winds less than 10 kt. Seas 5 to 7 ft. .FRI...N winds less than 10 kt. Seas 5 to 7 ft. .FRI NIGHT...Variable winds less than 10 kt. Seas 4 to 6 ft. Caribbean between 64W and 72W .TONIGHT...E winds 20 to 30 kt Gulf of Venezuela, and E 10 to 20 kt elsewhere. Seas 5 to 7 ft. .MON...E winds 15 to 25 kt Gulf of Venezuela, and E 10 to 20 kt elsewhere. Seas 5 to 7 ft. .MON NIGHT...E winds 20 to 30 kt Gulf of Venezuela, and E 10 to 20 kt elsewhere. Seas 4 to 6 ft Gulf of Venezuela, and 6 to 8 ft elsewhere. .TUE...E winds 15 to 25 kt. Seas 3 to 5 ft Gulf of Venezuela, and 6 to 9 ft elsewhere. .TUE NIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft. .WED...E winds 10 to 20 kt. Seas 6 to 9 ft. .WED NIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft. .THU...E winds 10 to 20 kt. Seas 6 to 8 ft. .THU NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. .FRI...E winds 10 to 20 kt. Seas 5 to 7 ft. .FRI 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 6 to 9 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. .WED...E winds 10 to 20 kt. Seas 8 to 11 ft. .WED NIGHT...E winds 10 to 20 kt. Seas 8 to 11 ft. .THU...E winds 10 to 20 kt. Seas 7 to 10 ft. .THU NIGHT...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 20 kt. Seas 6 to 9 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. .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 9 ft. .TUE NIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft. .WED...E winds 10 to 20 kt. Seas 6 to 9 ft. .WED NIGHT...E winds 10 to 20 kt. Seas 7 to 10 ft. .THU...E winds 10 to 20 kt. Seas 7 to 10 ft. .THU NIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft. .FRI...E winds 10 to 20 kt. Seas 7 to 10 ft. .FRI NIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft. Synopsis for the the SW N Atlantic including the Bahamas .SYNOPSIS...A cold front extends from 31N68W to the NW Bahamas and to the Straits of Florida. Fresh to strong winds will continue on both sides of the front north of 27N as it moves eastward. The front will reach from near 27N55W to 25N63W and stationary to 24N80W Mon evening, then become stationary Tue evening near 21N55W to 23N71W and begin to weaken. Southeast winds will increase to strong to near gale force west of 70W Mon night, then increase to gale force Tue through Tue night north of 28N and west of 70W as a cold front approaches from the west. The cold front will move off NE Florida early Tue evening. By Wed evening, the front will be weakening as it reaches from near 31N68W to the central Bahamas. Very rough seas will continue Wed night east of Florida and northeast of the Bahamas. A squall line containing strong to severe thunderstorms may occur just prior to the frontal passage late Tue into early Wed. Seas will subside Thu and Thu night as high pressure builds over the western Atlantic. Southerly winds begin to increase east of northern and central Florida late Fri as the next frontal system approaches from the W. ATLC waters from 27N to 31N W of 77W ...GALE WARNING... ...GALE CONDITIONS POSSIBLE TUE AND TUE NIGHT... .TONIGHT...N winds 15 to 20 kt. Seas 5 to 7 ft. .MON...E winds 15 to 20 kt. Seas 5 to 6 ft. .MON NIGHT...SE winds 20 to 30 kt. Seas 7 to 10 ft. .TUE...SE winds 25 to 35 kt. Seas 10 to 15 ft. .TUE NIGHT...SW winds 25 to 35 kt. Seas 12 to 17 ft. .WED...W winds 15 to 25 kt. Seas 9 to 14 ft. .WED NIGHT...W winds 10 to 15 kt. Seas 7 to 10 ft, subsiding to 5 to 7 ft late. .THU...NW winds less than 10 kt in the morning, becoming variable winds less than 10 kt. Seas 4 to 6 ft. .THU NIGHT...E to SE winds less than 10 kt. Seas 3 to 5 ft. .FRI...SE winds 10 to 20 kt. Seas 5 to 7 ft. .FRI NIGHT...S winds 15 to 25 kt. Seas 7 to 10 ft. ATLC waters from 27N to 31N between 65W and 77W ...GALE WARNING W OF 70W... ...GALE CONDITIONS POSSIBLE W OF 67W WED... .TONIGHT...NW winds 10 to 20 kt W of 70W, and W 15 to 25 kt elsewhere. Seas 6 to 9 ft. .MON...N winds 15 to 20 kt. Seas 7 to 10 ft W of 70W, and 8 to 13 ft elsewhere. .MON NIGHT...E winds 15 to 25 kt. Seas 7 to 10 ft W of 70W, and 8 to 13 ft elsewhere. .TUE...SE winds 25 to 35 kt W of 70W, and E 15 to 25 kt elsewhere. Seas 9 to 12 ft. .TUE NIGHT...S winds 20 to 30 kt. Seas 10 to 15 ft. .WED...W of 67W, S winds 25 to 35 kt. Seas 9 to 14 ft. E of 67W, S winds 20 to 30 kt. Seas 8 to 12 ft. .WED NIGHT...W winds 10 to 20 kt. Seas 8 to 13 ft. .THU...NW winds less than 10 kt. Seas 6 to 9 ft. .THU NIGHT...NE winds less than 10 kt. Seas 5 to 7 ft. .FRI...E winds 10 to 15 kt. Seas 4 to 6 ft. .FRI NIGHT...SE winds 10 to 20 kt. Seas 6 to 8 ft. Bahamas N of 22N .TONIGHT...NE winds 10 to 20 kt. Seas 4 to 6 ft. .MON...E winds 10 to 20 kt. Seas 3 to 5 ft. .MON NIGHT...E winds 15 to 25 kt. Seas 4 to 6 ft. .TUE...SE winds 15 to 25 kt. Seas 5 to 7 ft. .TUE NIGHT...S winds 15 to 25 kt. Seas 4 to 6 ft. .WED...S to SW winds 10 to 15 kt. Seas 4 to 6 ft. .WED NIGHT...E winds less than 10 kt. Seas 3 to 5 ft. .THU...E winds less than 10 kt. Seas 3 to 4 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. .FRI...SE winds 10 to 15 kt. Seas 3 to 4 ft. .FRI NIGHT...SE winds 10 to 15 kt. Seas 3 to 4 ft. ATLC waters from 22N to 27N between 65W and the Bahamas .TONIGHT...W of 70W, W winds less than 10 kt in the evening. Winds N after midnight. Elsewhere, SE winds less than 10 kt in the evening. Seas 4 to 6 ft. .MON...NE winds 10 to 20 kt. Seas 5 to 7 ft. .MON NIGHT...E winds 15 to 25 kt W of 70W, and NE 15 to 25 kt elsewhere. Seas 6 to 9 ft. .TUE...E winds 20 to 25 kt. Seas 8 to 10 ft. .TUE NIGHT...SE winds 15 to 25 kt. Seas 9 to 10 ft. .WED...SE winds 10 to 20 kt. Seas 8 to 10 ft. .WED NIGHT...SE winds 10 to 15 kt. Seas 6 to 8 ft. .THU...SE winds less than 10 kt. Seas 6 to 7 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 5 to 6 ft. .FRI...SE winds 10 to 15 kt. Seas 5 to 6 ft. .FRI NIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft. ATLC waters S of 22N W of 65W .TONIGHT...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...E winds 10 to 20 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 6 to 9 ft. .WED...SE winds 10 to 15 kt. Seas 6 to 8 ft. .WED NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. .THU...E winds 10 to 15 kt. Seas 5 to 7 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .FRI...E winds 10 to 15 kt. Seas 5 to 7 ft. .FRI NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. ATLC waters from 19N to 22N between 55W and 65W .TONIGHT...E winds less than 10 kt. Seas 6 to 8 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...NE winds 15 to 25 kt. Seas 6 ft, building to 7 to 10 ft in the afternoon. .TUE NIGHT...E winds 15 to 25 kt. Seas 8 to 13 ft. .WED...E winds 15 to 20 kt. Seas 9 to 13 ft. .WED NIGHT...E winds 10 to 20 kt. Seas 9 to 11 ft. .THU...E winds 10 to 20 kt. Seas 8 to 11 ft. .THU NIGHT...E winds 15 to 20 kt. Seas 8 to 10 ft. .FRI...E winds 10 to 15 kt. Seas 7 to 9 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 6 to 8 ft.