Offshore Forecast
Issued by NWS
Issued by NWS
329 FZNT31 KNHC 021911 OFFN20 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 311 PM EDT Tue Sep 2 2025 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...The Atlantic ridge combined with the Colombian low will support moderate to fresh trades along with moderate seas across much of the central Caribbean through Sat. Fresh to locally strong winds are expected to pulse at night off Colombia and the Gulf of Venezuela through Fri night. In addition, moderate to locally fresh winds will prevail in the Gulf of Honduras through the forecast period. NW Caribbean W of 85W .TONIGHT...SE winds less than 10 kt. Seas 2 ft or less. .WED...SE winds less than 10 kt. Seas 2 ft or less. .WED NIGHT...SE winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 2 ft or less, building to 3 ft after midnight. .THU...SE winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 3 ft. .THU NIGHT...SE winds 10 to 15 kt. Seas 2 ft or less, building to 3 ft after midnight. .FRI...SE winds 10 to 15 kt. Seas 3 to 4 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. .SAT...E winds 10 to 15 kt. Seas 3 to 4 ft. .SAT NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. .SUN...E winds 10 to 15 kt. Seas 3 to 4 ft. .SUN NIGHT...E winds 10 to 15 kt. Seas 3 ft. Caribbean N of 15N between 72W and 85W .TONIGHT...E winds 10 to 15 kt S of 18N, and Variable less than 10 kt elsewhere. Seas 3 ft. .WED...E winds 10 to 15 kt S of 18N, and Variable less than 10 kt elsewhere. Seas 3 ft. .WED NIGHT...S of 18N, E winds 10 to 15 kt. Elsewhere, Variable winds less than 10 kt, becoming SE less than 10 kt after midnight. Seas 3 ft. .THU...E winds 10 to 15 kt S of 18N, and SE less than 10 kt elsewhere. Seas 3 to 5 ft S of 18N, and 2 ft or less elsewhere. .THU NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. .FRI...E winds 10 to 15 kt. Seas 3 to 4 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. .SAT...E winds 10 to 15 kt. Seas 3 to 5 ft. .SAT NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. .SUN...E winds 10 to 15 kt. Seas 3 to 5 ft. .SUN NIGHT...E winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 3 to 5 ft. Caribbean from 11N to 15N W of 72W .TONIGHT...NE winds 10 to 20 kt within 90 nm of coast of Colombia, and NE 10 to 15 kt elsewhere. Seas 4 to 6 ft. .WED...E winds 10 to 20 kt within 90 nm of coast of Colombia, and E 10 to 15 kt elsewhere. Seas 4 to 6 ft. .WED NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. .THU...E winds 10 to 15 kt. Seas 3 to 5 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. .FRI...E winds 10 to 20 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 3 to 5 ft. .SAT NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. .SUN...E winds 10 to 15 kt. Seas 3 to 5 ft. .SUN NIGHT...E winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 3 to 5 ft. SW Caribbean S of 11N .TONIGHT...N winds less than 10 kt. Seas 3 to 5 ft. .WED...NE winds less than 10 kt, shifting to SE in the afternoon. Seas 3 to 5 ft. .WED NIGHT...NW winds less than 10 kt. Seas 3 to 4 ft. .THU...S winds less than 10 kt. Seas 3 to 4 ft. .THU NIGHT...W winds less than 10 kt. Seas 3 to 4 ft. .FRI...Variable winds less than 10 kt, becoming SW less than 10 kt in the afternoon. Seas 3 ft. .FRI NIGHT...W winds less than 10 kt. Seas 3 ft. .SAT...SW winds less than 10 kt. Seas 3 to 4 ft. .SAT NIGHT...W winds less than 10 kt. Seas 3 to 4 ft. .SUN...SW winds less than 10 kt. Seas 3 to 4 ft. .SUN NIGHT...SW winds less than 10 kt. Seas 3 ft. Caribbean between 64W and 72W .TONIGHT...NE winds 15 to 25 kt Gulf of Venezuela, and E 10 to 20 kt elsewhere. Seas 3 to 5 ft. .WED...E winds 10 to 20 kt. Seas 3 to 5 ft. .WED NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft. .THU...E winds 10 to 15 kt. Seas 3 to 5 ft. .THU NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft. .FRI...E winds 10 to 20 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 5 ft. .SAT NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. .SUN...E winds 10 to 15 kt. Seas 3 to 5 ft. .SUN NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. Offshore Leeward Islands and adjacent ATLC waters from 15N to 19N W of 55W .TONIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. .WED...E winds 10 to 15 kt. Seas 3 to 4 ft. .WED NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. .THU...E winds 10 to 15 kt. Seas 3 to 5 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. .FRI...E winds 10 to 15 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 3 to 5 ft. .SAT NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. .SUN...E winds 10 to 15 kt. Seas 3 to 5 ft. .SUN NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. Offshore Windward Islands and adjacent ATLC waters from 07N to 15N W of 55W .TONIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. .WED...E winds 10 to 15 kt. Seas 3 to 4 ft. .WED NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. .THU...E winds 10 to 15 kt. Seas 3 to 5 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. .FRI...E winds 10 to 15 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 3 to 5 ft. .SAT NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. .SUN...E winds 10 to 15 kt. Seas 3 to 5 ft. .SUN NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. Synopsis for the the SW N Atlantic including the Bahamas .SYNOPSIS...A nearly stationary front will persist over the NW waters, extending roughly from 31N74W to the NW Bahamas and south Florida. The pressure gradient between the Atlantic ridge and the front supports an area of fresh to strong southerly winds from 25N to 28N between 72W and 76W. These winds are expected to persist tonight into Wed. A band-like of scattered to numerous showers and thunderstorms is SE of the front affecting the Bahamas, the Straits of Florida and western Cuba. Winds and seas could be higher near thunderstorms. Elsewhere, the Atlantic ridge will continue to dominate the weather pattern across the forecast waters, supporting gentle to moderate winds and mostly moderate seas. ATLC waters from 27N to 31N W of 77W .TONIGHT...N winds 10 to 15 kt. Seas 4 to 6 ft. .WED...N winds 10 to 15 kt. Seas 4 to 6 ft. .WED NIGHT...NE winds less than 10 kt. Seas 3 to 5 ft. .THU...NE winds less than 10 kt. Seas 3 to 4 ft. .THU NIGHT...SE winds less than 10 kt. Seas 3 to 4 ft. .FRI...Variable winds less than 10 kt, becoming E less than 10 kt in the afternoon. Seas 3 ft. .FRI NIGHT...SE winds less than 10 kt. Seas 3 ft. .SAT...SE winds less than 10 kt. Seas 3 ft. .SAT NIGHT...SE winds less than 10 kt in the evening, becoming variable winds less than 10 kt. Seas 3 ft. .SUN...Variable winds less than 10 kt, becoming E less than 10 kt in the afternoon. Seas 3 ft. .SUN NIGHT...SE winds less than 10 kt. Seas 3 ft. ATLC waters from 27N to 31N between 65W and 77W .TONIGHT...S winds 10 to 15 kt. Seas 4 to 6 ft. .WED...S winds 10 to 15 kt. Seas 4 to 6 ft. .WED NIGHT...S winds 10 to 15 kt. Seas 4 to 6 ft. .THU...S winds 10 to 15 kt. Seas 4 to 6 ft. .THU NIGHT...S winds 10 to 15 kt. Seas 3 to 5 ft. .FRI...S winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 3 to 5 ft. .FRI NIGHT...SE winds less than 10 kt. Seas 3 to 4 ft. .SAT...SE 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 10 to 15 kt. Seas 3 to 5 ft. .SUN NIGHT...SE winds less than 10 kt, shifting to E after midnight. Seas 3 to 5 ft. Bahamas N of 22N .TONIGHT...SW winds 10 to 15 kt, diminishing to less than 10 kt after midnight. Seas 2 ft or less. .WED...SW winds less than 10 kt. Seas 2 ft or less. .WED NIGHT...SW winds less than 10 kt, shifting to S after midnight. Seas 2 ft or less. .THU...SW winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 2 ft or less. .THU NIGHT...SW winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 2 ft or less. .FRI...S winds less than 10 kt. Seas 2 ft or less. .FRI NIGHT...E winds less than 10 kt. Seas 2 ft or less. .SAT...SE winds less than 10 kt. Seas 2 ft or less. .SAT NIGHT...E winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 2 ft or less. .SUN...E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 2 ft or less. .SUN NIGHT...E winds 10 to 15 kt. Seas 2 ft or less. ATLC waters from 22N to 27N between 65W and the Bahamas .TONIGHT...S winds less than 10 kt, shifting to SE after midnight. Seas 3 to 5 ft. .WED...S winds 10 to 15 kt. Seas 3 to 5 ft. .WED NIGHT...S winds less than 10 kt, shifting to SE after midnight. Seas 3 to 5 ft. .THU...SE winds 10 to 15 kt. Seas 3 to 5 ft. .THU NIGHT...SE winds 10 kt. Seas 3 to 4 ft. .FRI...SE winds 10 to 15 kt. Seas 3 to 4 ft. .FRI NIGHT...E winds less than 10 kt. Seas 3 to 4 ft. .SAT...SE winds 10 to 15 kt. Seas 3 to 4 ft. .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 15 kt. Seas 3 to 5 ft. ATLC waters S of 22N W of 65W .TONIGHT...SE winds 10 to 15 kt. Seas 2 ft or less, building to 3 ft after midnight. .WED...SE winds 10 to 15 kt. Seas 3 ft. .WED NIGHT...SE winds 10 to 15 kt. Seas 3 ft. .THU...SE winds 10 to 15 kt. Seas 3 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 3 ft. .FRI...E winds 10 to 15 kt. Seas 3 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. .SAT...E winds 10 to 15 kt. Seas 3 to 4 ft. .SAT NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. .SUN...E winds 10 to 15 kt. Seas 3 to 4 ft. .SUN NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. ATLC waters from 19N to 22N between 55W and 65W .TONIGHT...E winds 10 to 15 kt. Seas 4 ft. .WED...E winds 10 to 15 kt. Seas 4 to 5 ft. .WED NIGHT...E winds 10 kt. Seas 4 to 5 ft. .THU...E winds 10 to 15 kt. Seas 4 to 5 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 4 ft. .FRI...E winds 10 to 15 kt. Seas 4 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 4 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 10 to 15 kt. Seas 5 to 6 ft. .SUN NIGHT...E winds 10 to 15 kt. Seas 5 to 6 ft.