Offshore Forecast
Issued by NWS
Issued by NWS
036 FZNT31 KNHC 201408 OFFN20 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 1008 AM EDT Fri Sep 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...Moderate to fresh winds and moderate seas are expected across the E and central Caribbean through at least Sat. Looking ahead, a broad area of low pressure could form by the early to middle part of next week over the northwestern Caribbean Sea. Thereafter, gradual development of this system is possible, and a tropical depression could form as the system moves slowly to the north or northwest over the northwestern Caribbean Sea and into the southern Gulf of Mexico through the end of next week. There is a medium chance of tropical cyclone formation in the next seven days. NW Caribbean W of 85W .THIS AFTERNOON...E winds less than 10 kt. Seas 3 ft. .TONIGHT...E winds less than 10 kt. Seas 2 ft or less. .SAT...E winds less than 10 kt. Seas 2 ft or less. .SAT NIGHT...E winds less than 10 kt. Seas 2 ft or less, building to 3 ft after midnight. .SUN...E winds less than 10 kt. Seas 3 ft. .SUN NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. .MON...E winds 10 to 15 kt. Seas 3 to 4 ft. .MON NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. .TUE...SE winds 10 to 15 kt. Seas 3 to 5 ft. .TUE NIGHT...SE winds 10 to 15 kt. Seas 3 to 5 ft. Caribbean N of 15N between 72W and 85W .THIS AFTERNOON...E winds 10 to 15 kt S of 18N, and Variable less than 10 kt elsewhere. Seas 3 to 5 ft S of 18N, and 2 ft or less elsewhere. .TONIGHT...E winds less than 10 kt. Seas 3 ft. .SAT...E winds 10 to 15 kt S of 18N, and SE less than 10 kt elsewhere. Seas 3 ft. .SAT NIGHT...E winds less than 10 kt. Seas 3 ft. .SUN...E winds less than 10 kt. Seas 2 ft or less. .SUN NIGHT...E winds 10 to 15 kt. Seas 2 ft or less. .MON...SE winds 10 to 15 kt. Seas 2 ft or less. .MON NIGHT...SE winds 10 to 15 kt. Seas 2 ft or less, building to 3 to 4 ft after midnight. .TUE...SE winds 10 to 15 kt. Seas 3 to 5 ft. .TUE NIGHT...SE winds 10 to 20 kt. Seas 3 to 5 ft. Caribbean from 11N to 15N W of 72W .THIS AFTERNOON...E winds 10 to 15 kt. Seas 3 to 5 ft. .TONIGHT...Within 90 nm of coast of Colombia, NE winds less than 10 kt, shifting to E after midnight. Elsewhere, E winds less than 10 kt. Seas 3 to 5 ft. .SAT...S winds less than 10 kt within 90 nm of coast of Colombia, and SE 10 to 15 kt elsewhere. Seas 3 to 4 ft. .SAT NIGHT...SE winds less than 10 kt. Seas 3 to 4 ft. .SUN...S winds less than 10 kt. Seas 3 to 4 ft. .SUN NIGHT...SE winds less than 10 kt. Seas 3 ft. .MON...S winds less than 10 kt. Seas 3 ft in the morning, subsiding to 2 ft or less. .MON NIGHT...SE winds less than 10 kt. Seas 2 ft or less. .TUE...SE winds less than 10 kt. Seas 3 ft. .TUE NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. SW Caribbean S of 11N .THIS AFTERNOON...Variable winds less than 10 kt, becoming SW less than 10 kt in the afternoon. Seas 3 to 4 ft. .TONIGHT...SW winds less than 10 kt. Seas 3 ft. .SAT...SW winds less than 10 kt. Seas 3 ft. .SAT NIGHT...SW winds less than 10 kt. Seas 3 ft. .SUN...SW winds less than 10 kt. Seas 3 ft. .SUN NIGHT...S winds less than 10 kt. Seas 3 ft. .MON...S winds less than 10 kt. Seas 3 ft in the morning, subsiding to 2 ft or less. .MON NIGHT...S winds less than 10 kt. Seas 2 ft or less. .TUE...SW winds less than 10 kt. Seas 2 ft or less. .TUE NIGHT...Variable winds less than 10 kt. Seas 2 ft or less. Caribbean between 64W and 72W .THIS AFTERNOON...Gulf of Venezuela, E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon,Seas 3 ft, subsiding to 2 ft or less. Elsewhere, E winds 10 to 15 kt,Seas 3 to 5 ft. .TONIGHT...E winds 10 to 15 kt. Seas 2 ft or less Gulf of Venezuela, and 3 to 5 ft elsewhere. .SAT...Gulf of Venezuela, E winds 10 to 15 kt, shifting to SW in the afternoon. Elsewhere, E winds 10 to 15 kt. Seas 2 ft or less Gulf of Venezuela, and 3 to 5 ft elsewhere. .SAT NIGHT...E winds 10 to 15 kt. Seas 2 ft or less Gulf of Venezuela, and 3 to 5 ft elsewhere. .SUN...E winds 10 to 15 kt. Seas 3 to 5 ft. .SUN NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. .MON...E winds 10 to 15 kt. Seas 3 to 4 ft. .MON NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. .TUE...E winds 10 to 15 kt. Seas 3 to 4 ft. .TUE NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. Offshore Leeward Islands and adjacent ATLC waters from 15N to 19N W of 55W .THIS AFTERNOON...SW winds less than 10 kt. Seas 4 to 6 ft. .TONIGHT...SW winds less than 10 kt. Seas 3 to 5 ft. .SAT...SW winds less than 10 kt. Seas 3 to 5 ft. .SAT NIGHT...SW winds less than 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 SW less than 10 kt in the afternoon. Seas 3 to 4 ft. .SUN NIGHT...SW winds less than 10 kt in the evening, becoming variable winds less than 10 kt. Seas 3 to 4 ft. .MON...SE winds less than 10 kt. Seas 3 to 4 ft. .MON NIGHT...E winds less than 10 kt. Seas 3 to 4 ft. .TUE...E winds less than 10 kt. Seas 3 to 4 ft. .TUE NIGHT...E winds less than 10 kt. Seas 3 to 4 ft. Offshore Windward Islands and adjacent ATLC waters from 07N to 15N W of 55W .THIS AFTERNOON...SE winds 10 to 15 kt. Seas 4 to 6 ft. .TONIGHT...SE 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, diminishing to less than 10 kt in the afternoon. Seas 3 to 5 ft. .SUN NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. .MON...E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 3 to 5 ft. .MON NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. .TUE...E winds less than 10 kt. Seas 3 to 4 ft. .TUE NIGHT...E winds less than 10 kt. Seas 3 to 4 ft. Synopsis for the the SW N Atlantic including the Bahamas .SYNOPSIS...An area of low pressure is centered near 25N55W. Fresh to strong winds and rough seas will impact the waters N of 25N and E of 60W today in association with this low. Environmental conditions appear marginally conducive for some tropical development of this system while it meanders in the Subtropical Atlantic through early next week. Otherwise, a weak cold front will move off the SE coast of the US today and slowly move across the waters N of 25N through Mon. ATLC waters from 27N to 31N W of 77W .THIS AFTERNOON...N winds less than 10 kt. Seas 3 to 4 ft. .TONIGHT...NE winds less than 10 kt. Seas 3 to 4 ft. .SAT...NE winds less than 10 kt. Seas 3 to 5 ft. .SAT NIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. .SUN...NE winds 10 kt. Seas 4 to 6 ft. .SUN NIGHT...NE winds 10 to 15 kt. Seas 5 to 6 ft. .MON...NE winds 10 to 15 kt. Seas 4 to 6 ft. .MON NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .TUE...NE winds 10 kt. Seas 5 to 7 ft. .TUE NIGHT...E winds 10 to 15 kt. Seas 6 to 8 ft. ATLC waters from 27N to 31N between 65W and 77W .THIS AFTERNOON...Variable winds less than 10 kt, becoming SW less than 10 kt in the afternoon. Seas 4 to 5 ft. .TONIGHT...SW winds less than 10 kt in the evening, becoming variable winds less than 10 kt. Seas 4 to 5 ft. .SAT...Variable winds less than 10 kt. Seas 4 to 5 ft. .SAT NIGHT...NW winds less than 10 kt. Seas 4 to 6 ft. .SUN...NW winds 10 to 15 kt. Seas 5 to 7 ft. .SUN NIGHT...N winds 10 to 15 kt. Seas 5 to 7 ft. .MON...N winds 10 to 15 kt. Seas 6 to 8 ft. .MON NIGHT...N winds 10 to 15 kt. Seas 6 to 9 ft. .TUE...N winds 10 to 15 kt. Seas 6 to 9 ft. .TUE NIGHT...N winds 10 to 15 kt. Seas 7 to 9 ft. Bahamas N of 22N .THIS AFTERNOON...SW winds less than 10 kt. Seas 2 ft or less. .TONIGHT...Variable winds less than 10 kt, becoming SE less than 10 kt after midnight. Seas 2 ft or less. .SAT...S winds less than 10 kt in the morning, becoming variable winds less than 10 kt. Seas 2 ft or less. .SAT NIGHT...Variable winds less than 10 kt. Seas 2 ft or less. .SUN...Variable winds less than 10 kt. Seas 2 ft or less. .SUN NIGHT...NE winds less than 10 kt. Seas 2 ft or less. .MON...E winds less than 10 kt. Seas 2 ft or less, building to 3 ft in the afternoon. .MON NIGHT...E winds less than 10 kt. Seas 3 to 4 ft. .TUE...E winds less than 10 kt. Seas 3 to 4 ft. .TUE NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. ATLC waters from 22N to 27N between 65W and the Bahamas .THIS AFTERNOON...E winds less than 10 kt. Seas 4 to 5 ft. .TONIGHT...E winds less than 10 kt. Seas 4 to 5 ft. .SAT...SE winds less than 10 kt. Seas 4 to 5 ft. .SAT NIGHT...N winds less than 10 kt in the evening, becoming variable winds less than 10 kt. Seas 4 to 5 ft. .SUN...Variable winds less than 10 kt, becoming W less than 10 kt in the afternoon. Seas 4 to 5 ft. .SUN NIGHT...NW winds less than 10 kt. Seas 4 to 5 ft. .MON...NW winds less than 10 kt. Seas 4 to 6 ft. .MON NIGHT...N winds less than 10 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. Seas 5 to 7 ft. ATLC waters S of 22N W of 65W .THIS AFTERNOON...E winds less than 10 kt. Seas 3 to 5 ft. .TONIGHT...E winds less than 10 kt. Seas 3 to 5 ft. .SAT...SE winds less than 10 kt. Seas 3 to 5 ft. .SAT NIGHT...E winds less than 10 kt. Seas 3 to 4 ft. .SUN...E winds less than 10 kt in the morning, becoming variable winds less than 10 kt. Seas 3 ft. .SUN NIGHT...NE winds less than 10 kt, shifting to SE after midnight. Seas 3 ft. .MON...Variable winds less than 10 kt. Seas 3 ft. .MON NIGHT...Variable winds less than 10 kt. Seas 3 ft. .TUE...SE winds less than 10 kt. Seas 3 ft. .TUE NIGHT...E winds less than 10 kt. Seas 3 to 5 ft. ATLC waters from 19N to 22N between 55W and 65W .THIS AFTERNOON...W winds less than 10 kt. Seas 5 to 6 ft. .TONIGHT...W winds less than 10 kt. Seas 5 to 6 ft. .SAT...W winds less than 10 kt. Seas 5 ft. .SAT NIGHT...W winds less than 10 kt. Seas 4 to 5 ft. .SUN...W winds 10 kt. Seas 4 to 5 ft. .SUN NIGHT...W winds 10 kt. Seas 4 to 5 ft. .MON...SW winds 10 kt. Seas 4 ft. .MON NIGHT...SW winds less than 10 kt in the evening, becoming variable winds less than 10 kt. Seas 4 ft. .TUE...Variable winds less than 10 kt. Seas 4 ft. .TUE NIGHT...SE winds 10 kt. Seas 4 ft.