Offshore Forecast
Issued by NWS
Issued by NWS
233 FZNT31 KNHC 312049 OFFN20 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 449 PM EDT Thu Oct 31 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....A broad area of low pressure is likely to develop over the southwestern Caribbean Sea during the next day or two. Gradual development is possible thereafter, and a tropical depression could form over the weekend or early next week while the system drifts generally northward or northwestward over the central or western Caribbean Sea. Meanwhile, high pressure present N of the area will continue to support fresh to strong NE to E winds in the lee of Cuba, the Windward Passage, and south of Hispaniola, including the Mona Passage, into the upcoming weekend. Large N to NE long period swell will begin to reach the NE Caribbean passages starting Thu. The swell is expected to subside late on Sat. Active weather will impact the majority of the basin into the weekend. Marine interests over these waters should take the necessary action to avoid hazardous marine conditions. Please monitor the latest forecasts and Tropical Weather Outlooks. NW Caribbean W of 85W .TONIGHT...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...NE winds 10 to 15 kt. Seas 5 to 7 ft. .SAT...NE winds 10 to 15 kt. Seas 5 to 7 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 15 kt. Seas 5 to 7 ft. .MON...NE winds 10 to 15 kt. Seas 5 to 7 ft. .MON NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. .TUE...NE winds less than 10 kt. Seas 4 to 6 ft. .TUE NIGHT...E winds less than 10 kt. Seas 4 to 6 ft. Caribbean N of 15N between 72W and 85W .TONIGHT...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 4 to 6 ft. .SAT...E winds 10 to 20 kt. Seas 4 to 6 ft. .SAT NIGHT...NE winds 10 to 20 kt. Seas 4 to 6 ft. .SUN...NE winds 10 to 20 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. Seas 4 to 6 ft. .MON NIGHT...NE winds less than 10 kt, shifting to NW after midnight. Seas 4 to 6 ft. .TUE...W winds 10 to 15 kt. Seas 4 to 6 ft. .TUE NIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft. Caribbean from 11N to 15N W of 72W .TONIGHT...E winds less than 10 kt. Seas 3 to 5 ft. .FRI...Within 90 nm of coast of Colombia, S to SW winds less than 10 kt. Elsewhere, E winds less than 10 kt. Seas 3 to 5 ft. .FRI NIGHT...SW winds 10 to 15 kt within 90 nm of coast of Colombia, and E less than 10 kt elsewhere. Seas 3 to 4 ft. .SAT...S winds 10 to 20 kt within 90 nm of coast of Colombia, and N less than 10 kt elsewhere. Seas 4 to 6 ft. .SAT NIGHT...N winds 10 to 15 kt. Seas 4 to 6 ft. .SUN...NW winds 10 to 15 kt. Seas 4 to 6 ft. .SUN NIGHT...W winds 10 to 15 kt. Seas 4 to 6 ft. .MON...W winds 10 to 15 kt. Seas 4 to 6 ft. .MON NIGHT...SW winds 10 to 15 kt. Seas 4 to 6 ft. .TUE...SW winds 10 to 15 kt. Seas 3 to 5 ft. .TUE NIGHT...SW winds 10 to 15 kt in the evening, becoming variable winds less than 10 kt. Seas 3 to 5 ft. SW Caribbean S of 11N .TONIGHT...SW winds less than 10 kt. Seas 3 to 4 ft. .FRI...SW winds less than 10 kt. Seas 3 to 4 ft. .FRI NIGHT...W winds 10 to 15 kt. Seas 3 to 4 ft. .SAT...W winds 10 to 20 kt. Seas 4 to 6 ft. .SAT NIGHT...W winds 10 to 15 kt. Seas 3 to 5 ft. .SUN...SW winds 10 to 15 kt. Seas 3 to 5 ft. .SUN NIGHT...W winds 10 to 20 kt. Seas 3 to 5 ft. .MON...SW winds 10 to 20 kt. Seas 3 to 5 ft. .MON NIGHT...SW winds 10 to 15 kt. Seas 3 to 5 ft. .TUE...S winds 10 to 15 kt. Seas 3 to 5 ft. .TUE NIGHT...S winds less than 10 kt. Seas 3 ft in the evening, subsiding to 2 ft or less. Caribbean between 64W and 72W .TONIGHT...Gulf of Venezuela, N winds 10 to 15 kt, shifting to E after midnight. Elsewhere, E winds 10 to 15 kt. Seas 2 ft or less Gulf of Venezuela, and 3 to 5 ft elsewhere. .FRI...Gulf of Venezuela, Variable winds less than 10 kt, becoming SW less than 10 kt in the afternoon. Elsewhere, E to SE winds 10 to 15 kt. Seas 2 to 3 ft Gulf of Venezuela, and 3 to 5 ft elsewhere. .FRI NIGHT...SE winds less than 10 kt. Seas 2 ft or less Gulf of Venezuela, and 3 to 5 ft elsewhere. .SAT...Variable winds less than 10 kt. Seas 3 to 4 ft. .SAT NIGHT...SE winds less than 10 kt. Seas 3 to 4 ft. .SUN...SE winds less than 10 kt. Seas 3 to 5 ft. .SUN NIGHT...SE winds less than 10 kt. Seas 3 to 5 ft. .MON...SE winds 10 to 15 kt. Seas 3 to 5 ft. .MON NIGHT...E to SE winds less than 10 kt. Seas 3 to 5 ft. .TUE...SE winds 10 to 15 kt. Seas 3 to 5 ft. .TUE NIGHT...NE to E winds less than 10 kt. Seas 3 to 4 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. .FRI...SE winds 10 to 15 kt. Seas 6 to 9 ft. .FRI NIGHT...SE winds 10 to 15 kt. Seas 6 to 8 ft. .SAT...SE winds 10 to 15 kt. Seas 6 to 8 ft. .SAT NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. .SUN...SE winds 10 to 15 kt. Seas 5 to 7 ft. .SUN NIGHT...SE winds less than 10 kt. Seas 5 to 7 ft. .MON...E winds less than 10 kt. Seas 5 to 7 ft. .MON NIGHT...E winds less than 10 kt. Seas 5 to 7 ft. .TUE...E winds less than 10 kt. Seas 4 to 6 ft. .TUE NIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. Offshore Windward Islands and adjacent ATLC waters from 07N to 15N W of 55W .TONIGHT...E winds less than 10 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 4 to 6 ft. .SAT...SE 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 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 less than 10 kt. Seas 5 to 7 ft. .TUE NIGHT...NE to E winds less than 10 kt. Seas 4 to 6 ft. Synopsis for the the SW N Atlantic including the Bahamas .SYNOPSIS...A very tight pressure gradient associated to high pressure centered N of Bermuda controls the wind regime throughout. This pattern will continue to support strong winds and rough to very rough seas over the Western Atlantic through the next few days. Peak seas of 13 to 16 ft are expected E of the Bahamas through Sun, perhaps subsiding some early next week. Active weather that is over the waters S of about 25N and E of the Bahamas is likely to be further enhanced if a trough near Puerto Rico slowly develops going into the weekend as it moves west northwestward near the Greater Antilles. The present ongoing strong to near gale force E winds over these same waters may reach gale force Fri night and into the upcoming weekend due to a tightening of the pressure gradient between the trough, or the developed system and the high pressure to the N. Marine interests over these waters should take the necessary action to avoid hazardous marine conditions. Please monitor the latest forecasts and Tropical Weather Outlooks. ATLC waters from 27N to 31N W of 77W .TONIGHT...E winds 15 to 20 kt. Seas 7 to 10 ft. .FRI...E winds 10 to 15 kt. Seas 6 to 9 ft. .FRI NIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft. .SAT...E winds 10 to 15 kt. Seas 6 to 8 ft. .SAT NIGHT...E winds 15 to 20 kt. Seas 6 to 8 ft. .SUN...E winds 15 to 20 kt. Seas 6 to 8 ft. .SUN NIGHT...E winds 15 to 20 kt. Seas 6 to 9 ft. .MON...E winds 15 to 20 kt. Seas 7 to 10 ft. .MON NIGHT...E winds 15 to 25 kt. Seas 8 to 11 ft. .TUE...E winds 15 to 25 kt. Seas 8 to 11 ft. .TUE NIGHT...E winds 15 to 20 kt. Seas 9 to 11 ft. ATLC waters from 27N to 31N between 65W and 77W .TONIGHT...E winds 15 to 25 kt. Seas 8 to 11 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. .SAT...E winds 10 to 20 kt. Seas 6 to 9 ft. .SAT NIGHT...E winds 10 to 20 kt. Seas 7 to 10 ft. .SUN...E winds 10 to 20 kt. Seas 7 to 10 ft. .SUN NIGHT...E winds 15 to 25 kt. Seas 8 to 11 ft. .MON...E winds 15 to 20 kt. Seas 7 to 10 ft. .MON NIGHT...E winds 15 to 25 kt. Seas 8 to 11 ft. .TUE...E winds 15 to 25 kt. Seas 8 to 11 ft. .TUE NIGHT...E winds 15 to 20 kt. Seas 8 to 11 ft. Bahamas N of 22N .TONIGHT...E winds 15 to 25 kt. Seas 6 to 9 ft. .FRI...E winds 10 to 20 kt. Seas 6 to 8 ft. .FRI NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. .SAT...E winds 10 to 20 kt. Seas 6 to 8 ft. .SAT NIGHT...NE winds 15 to 25 kt. Seas 6 to 9 ft. .SUN...NE winds 15 to 25 kt. Seas 6 to 9 ft. .SUN NIGHT...NE winds 15 to 25 kt. Seas 6 to 9 ft. .MON...NE winds 15 to 25 kt. Seas 6 to 8 ft. .MON NIGHT...E winds 15 to 25 kt. Seas 6 to 8 ft. .TUE...E winds 15 to 25 kt. Seas 6 to 8 ft. .TUE NIGHT...E winds 15 to 25 kt. Seas 6 to 8 ft. ATLC waters from 22N to 27N between 65W and the Bahamas .TONIGHT...E winds 20 to 25 kt. Seas 10 to 12 ft. .FRI...E winds 15 to 20 kt W of 70W, and E 20 to 25 kt elsewhere. Seas 9 to 12 ft. .FRI NIGHT...E winds 20 to 25 kt. Seas 9 to 14 ft. .SAT...E winds 15 to 25 kt W of 70W, and E 20 to 30 kt elsewhere. Seas 10 to 15 ft. .SAT NIGHT...E winds 15 to 25 kt. Seas 10 to 15 ft. .SUN...E winds 15 to 25 kt. Seas 10 to 14 ft. .SUN NIGHT...E winds 15 to 25 kt. Seas 9 to 13 ft. .MON...E winds 15 to 25 kt. Seas 8 to 12 ft. .MON NIGHT...E winds 15 to 25 kt. Seas 8 to 12 ft. .TUE...E winds 15 to 25 kt. Seas 8 to 12 ft. .TUE NIGHT...E winds 15 to 25 kt. Seas 9 to 11 ft. ATLC waters S of 22N W of 65W .TONIGHT...E winds 15 to 25 kt. Seas 8 to 11 ft. .FRI...E winds 15 to 25 kt. Seas 8 to 11 ft. .FRI NIGHT...E winds 15 to 25 kt. Seas 8 to 13 ft. .SAT...E winds 15 to 25 kt. Seas 8 to 13 ft. .SAT NIGHT...E winds 15 to 25 kt. Seas 8 to 13 ft. .SUN...SE winds 10 to 15 kt. Seas 7 to 10 ft. .SUN NIGHT...SE winds 10 to 15 kt. Seas 6 to 9 ft. .MON...SE winds 10 to 15 kt. Seas 6 to 9 ft. .MON NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. .TUE...E winds 10 to 15 kt. Seas 6 to 8 ft. .TUE NIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft. ATLC waters from 19N to 22N between 55W and 65W .TONIGHT...E winds 10 to 20 kt. Seas 9 to 12 ft. .FRI...E winds 15 to 25 kt. Seas 10 to 12 ft. .FRI NIGHT...E winds 15 to 25 kt. Seas 9 to 12 ft. .SAT...E winds 10 to 20 kt. Seas 9 to 12 ft. .SAT NIGHT...SE winds 10 to 15 kt. Seas 8 to 11 ft. .SUN...SE winds 10 to 15 kt. Seas 8 to 10 ft. .SUN NIGHT...SE winds less than 10 kt. Seas 7 to 8 ft. .MON...Variable winds less than 10 kt. Seas 6 to 7 ft. .MON NIGHT...Variable winds less than 10 kt, becoming E less than 10 kt after midnight. Seas 5 to 6 ft. .TUE...NE winds 10 to 15 kt. Seas 5 to 7 ft. .TUE NIGHT...NE winds 10 to 20 kt. Seas 6 to 8 ft.