Offshore Forecast
Issued by NWS
Issued by NWS
849 FZNT31 KNHC 212013 OFFN20 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 313 PM EST Thu Nov 21 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 cold front extending from central Cuba to western Honduras will reach from eastern Cuba to near Cabo Gracias a Dios, Nicaragua by Fri morning, and from the Windward Passage to near the Costa Rica-Panama border Sat morning, where the front should stall and gradually dissipate. Fresh to strong N winds and building seas will follow the front through Sat before winds begin to veer NE to E through Sun and diminish slightly going into early next week. NW Caribbean W of 85W .TONIGHT...N winds 10 to 20 kt. Seas 6 to 8 ft. .FRI...N winds 10 to 20 kt. Seas 6 to 8 ft. .FRI NIGHT...N winds 10 to 20 kt. Seas 5 to 7 ft. .SAT...N winds 10 to 15 kt. Seas 4 to 6 ft. .SAT NIGHT...NE winds 10 to 15 kt. Seas 3 to 5 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...NE winds 10 to 15 kt. Seas 3 to 5 ft. .MON NIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. .TUE...NE winds 10 to 20 kt. Seas 5 to 7 ft. .TUE NIGHT...NE winds 10 to 20 kt. Seas 5 to 7 ft. Caribbean N of 15N between 72W and 85W .TONIGHT...S of 18N, N winds 10 to 15 kt. Elsewhere, N winds 10 to 20 kt. Seas 3 to 5 ft. .FRI...N winds 10 to 20 kt. Seas 3 to 5 ft. .FRI NIGHT...N winds 10 to 20 kt. Seas 3 to 5 ft. .SAT...NE winds 10 to 20 kt. Seas 4 to 6 ft. .SAT NIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. .SUN...NE winds 10 to 20 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. .TUE...NE winds 10 to 20 kt. Seas 5 to 7 ft. .TUE NIGHT...NE winds 10 to 20 kt. Seas 5 to 7 ft. Caribbean from 11N to 15N W of 72W .TONIGHT...NE winds less than 10 kt. Seas 3 ft. .FRI...NE winds less than 10 kt. Seas 3 to 4 ft. .FRI NIGHT...Within 90 nm of coast of Colombia, NE winds less than 10 kt in the evening, becoming variable winds less than 10 kt. Elsewhere, NE winds 10 to 20 kt. Seas 2 ft or less within 90 nm of coast of Colombia, and 3 to 5 ft elsewhere. .SAT...Within 90 nm of coast of Colombia, Variable winds less than 10 kt, becoming NE less than 10 kt in the afternoon. Elsewhere, NE winds 10 to 20 kt. Seas 2 ft or less within 90 nm of coast of Colombia, and 4 to 6 ft elsewhere. .SAT NIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft. .SUN...NE winds 10 to 15 kt. Seas 3 to 5 ft. .SUN NIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. .MON...E winds 10 to 15 kt. Seas 4 to 6 ft. .MON NIGHT...NE winds 10 to 15 kt. Seas 5 to 7 ft. .TUE...E winds 10 to 15 kt. Seas 5 to 7 ft. .TUE NIGHT...NE winds 10 to 15 kt. Seas 5 to 7 ft. SW Caribbean S of 11N .TONIGHT...NW winds less than 10 kt in the evening, becoming variable winds less than 10 kt. Seas 2 to 4 ft. .FRI...NW winds less than 10 kt. Seas 2 to 4 ft. .FRI NIGHT...NW winds less than 10 kt. Seas 3 to 4 ft. .SAT...NW winds less than 10 kt. Seas 3 to 5 ft. .SAT NIGHT...N winds less than 10 kt. Seas 3 to 5 ft. .SUN...NW winds less than 10 kt. Seas 3 to 5 ft. .SUN NIGHT...N winds less than 10 kt in the evening, becoming variable winds less than 10 kt. Seas 3 to 4 ft. .MON...Variable winds less than 10 kt, becoming NW less than 10 kt in the afternoon. Seas 3 ft. .MON NIGHT...NW winds less than 10 kt. Seas 3 to 4 ft. .TUE...W winds less than 10 kt. Seas 3 to 5 ft. .TUE NIGHT...W winds less than 10 kt. Seas 3 to 5 ft. Caribbean between 64W and 72W .TONIGHT...E winds less than 10 kt. Seas 3 to 4 ft. .FRI...E winds less than 10 kt. Seas 2 ft or less Gulf of Venezuela, and 3 to 4 ft elsewhere. .FRI NIGHT...Gulf of Venezuela, NE winds 10 kt in the evening, becoming variable winds less than 10 kt. Elsewhere, E winds 10 to 15 kt. Seas 3 to 4 ft. .SAT...Gulf of Venezuela, Variable winds less than 10 kt, becoming N less than 10 kt in the afternoon. Elsewhere, E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 2 ft or less Gulf of Venezuela, and 3 to 4 ft elsewhere. .SAT NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. .SUN...E winds 10 to 15 kt. Seas 3 to 5 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...E winds 10 to 20 kt. Seas 6 to 8 ft. .TUE NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. Offshore Leeward Islands and adjacent ATLC waters from 15N to 19N W of 55W .TONIGHT...SE winds less than 10 kt. Seas 4 to 6 ft. .FRI...SE winds less than 10 kt. Seas 4 to 6 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .SAT...E winds 10 to 15 kt. Seas 4 to 6 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 20 kt. Seas 5 to 7 ft. .MON...E winds 10 to 20 kt. Seas 6 to 8 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 15 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 4 to 6 ft. .SAT...E winds 10 to 15 kt. Seas 4 to 6 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 20 kt. Seas 5 to 7 ft. .MON...E winds 10 to 20 kt. Seas 6 to 8 ft. .MON NIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft. .TUE...E winds 10 to 15 kt. Seas 6 to 8 ft. .TUE NIGHT...E winds 10 to 15 kt. Seas 6 to 8 ft. Synopsis for the the SW N Atlantic including the Bahamas .SYNOPSIS...A Gale Warning is in effect for a portion of the northwest waters for westerly gale winds in the wake of reinforcing cold front that will quickly sweep across the waters N and NE of the Bahamas starting late tonight through Sat night. Along with these winds, seas are expected to build to 12 to 15 ft. These seas will shift eastward roughly N of 30N reaching the NE forecast waters Sun before moving E of 55W early on Mon. Meanwhile, a cold front extending from near 31N73W to 26N78W to central Cuba will reach from near 31N68W to eastern Cuba by Fri morning, and from 31N61W to near the Windward Passage on Sat morning. The front is expected to stall in that general vicinity and gradually dissipate through the weekend. Expect fresh to strong winds and building seas on either side of the front N of about 26N. ATLC waters from 27N to 31N W of 77W .TONIGHT...NW winds 15 to 25 kt. Seas 6 to 9 ft. .FRI...NW winds 20 to 30 kt. Seas 8 to 11 ft. .FRI NIGHT...NW winds 10 to 20 kt. Seas 7 to 10 ft. .SAT...NW winds 10 to 20 kt. Seas 5 to 7 ft. .SAT NIGHT...NW winds 10 kt in the evening, becoming variable winds less than 10 kt. Seas 3 to 5 ft. .SUN...Variable winds less than 10 kt, becoming NW less than 10 kt in the afternoon. Seas 3 to 4 ft. .SUN NIGHT...Variable winds less than 10 kt, becoming S 10 kt after midnight. Seas 3 ft. .MON...Variable winds less than 10 kt, becoming SE less than 10 kt in the afternoon. Seas 3 ft. .MON NIGHT...S winds 10 kt. Seas 3 ft. .TUE...NW winds less than 10 kt. Seas 3 ft. .TUE NIGHT...W winds less than 10 kt. Seas 3 ft. ATLC waters from 27N to 31N between 65W and 77W .TONIGHT...W winds 10 to 20 kt. Seas 6 to 8 ft. .FRI...W of 70W, W winds 10 to 20 kt, increasing to 20 to 30 kt in the afternoon. Seas 7 to 10 ft, building to 8 to 13 ft in the afternoon. Elsewhere, SW winds 15 to 25 kt, seas 7 to 10 ft. .FRI NIGHT...W winds 15 to 25 kt. Seas 9 to 14 ft W of 70W, and 8 to 13 ft elsewhere. .SAT...W winds 10 to 20 kt. Seas 8 to 11 ft. .SAT NIGHT...NW winds 10 to 20 kt. Seas 7 to 10 ft. .SUN...NW winds less than 10 kt. Seas 6 to 9 ft. .SUN NIGHT...N winds less than 10 kt. Seas 5 to 7 ft. .MON...NE winds less than 10 kt. Seas 4 to 6 ft. .MON NIGHT...SE winds less than 10 kt. Seas 4 to 6 ft. .TUE...E winds less than 10 kt. Seas 3 to 5 ft. .TUE NIGHT...SE winds less than 10 kt, shifting to NW after midnight. Seas 3 to 5 ft. Bahamas N of 22N .TONIGHT...NW winds 10 to 20 kt. Seas 3 to 4 ft. .FRI...NW winds 10 to 20 kt. Seas 3 to 5 ft. .FRI NIGHT...NW winds 10 to 15 kt. Seas 3 to 5 ft. .SAT...N winds less than 10 kt. Seas 3 to 5 ft. .SAT NIGHT...NE winds less than 10 kt. Seas 3 to 4 ft. .SUN...NE winds 10 to 15 kt. Seas 3 ft. .SUN NIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. .MON...NE winds 10 to 20 kt. Seas 3 to 5 ft. .MON NIGHT...NE winds 10 to 20 kt. Seas 4 to 6 ft. .TUE...NE winds 10 to 20 kt. Seas 3 to 5 ft. .TUE NIGHT...NE winds 10 to 20 kt. Seas 3 to 5 ft. ATLC waters from 22N to 27N between 65W and the Bahamas .TONIGHT...W of 70W, SW winds 10 to 15 kt. Elsewhere, S winds 10 to 15 kt. Seas 4 to 6 ft. .FRI...SW winds 10 to 20 kt. Seas 5 to 7 ft. .FRI NIGHT...W winds 10 to 15 kt. Seas 6 to 8 ft. .SAT...NW winds 10 kt. Seas 6 to 9 ft. .SAT NIGHT...N winds 10 kt. Seas 6 to 9 ft. .SUN...NE winds 10 to 15 kt. Seas 5 to 7 ft. .SUN NIGHT...NE winds 10 to 15 kt. Seas 5 to 7 ft. .MON...NE 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 15 kt. Seas 6 to 8 ft. .TUE NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. ATLC waters S of 22N W of 65W .TONIGHT...SE winds less than 10 kt. Seas 3 to 5 ft. .FRI...SW winds less than 10 kt. Seas 3 to 5 ft. .FRI NIGHT...SW winds less than 10 kt. Seas 3 to 4 ft. .SAT...W winds less than 10 kt, shifting to N in the afternoon. Seas 3 to 5 ft. .SAT NIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. .SUN...NE winds 10 to 15 kt. Seas 5 to 7 ft. .SUN NIGHT...E winds 10 to 20 kt. Seas 5 to 7 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...E winds 10 to 20 kt. Seas 6 to 8 ft. .TUE NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. ATLC waters from 19N to 22N between 55W and 65W .TONIGHT...SE winds less than 10 kt. Seas 5 to 6 ft. .FRI...SE winds 10 kt. Seas 5 to 6 ft. .FRI NIGHT...SE winds 10 kt. Seas 4 to 6 ft. .SAT...SE winds 10 kt. Seas 4 to 6 ft. .SAT NIGHT...E winds less than 10 kt. Seas 4 to 6 ft. .SUN...E winds 10 to 15 kt. Seas 5 to 6 ft. .SUN NIGHT...E winds 10 to 15 kt. Seas 6 to 7 ft. .MON...E winds 10 to 15 kt. Seas 7 to 8 ft. .MON NIGHT...E winds 15 to 20 kt. Seas 7 to 8 ft. .TUE...E winds 10 to 15 kt. Seas 7 to 8 ft. .TUE NIGHT...E winds 15 kt. Seas 7 to 8 ft.