Offshore Forecast
Issued by NWS
Issued by NWS
404 FZNT31 KNHC 271958 OFFN20 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 358 PM EDT Wed Aug 27 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...A tropical wave, with axis along 83W, is producing scattered to numerous showers and thunderstorms over much of the western Caribbean, including Nicaragua and Honduras. Fresh to strong winds and moderate to rough seas are in the central Caribbean and these winds will become confined to the S-central waters tonight into Thu. Another tropical wave will move across the eastern Caribbean tonight and Thu, reaching the central part of the basin by Fri. NW Caribbean W of 85W .TONIGHT...E winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 3 to 4 ft. .THU...E winds less than 10 kt. Seas 3 to 4 ft. .THU NIGHT...E winds less than 10 kt. Seas 3 to 4 ft. .FRI...E winds less than 10 kt. Seas 3 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 3 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...SE winds 10 to 15 kt. Seas 3 to 5 ft. .SUN NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft. .MON...E winds 10 to 20 kt. Seas 3 to 5 ft. .MON NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. Caribbean N of 15N between 72W and 85W .TONIGHT...S of 18N, E winds 10 to 20 kt. Elsewhere, E winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 5 to 7 ft S of 18N, and 3 to 5 ft elsewhere. .THU...S of 18N, E winds 10 to 20 kt. Elsewhere, E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 5 to 7 ft S of 18N, and 3 to 4 ft elsewhere. .THU NIGHT...E winds 10 to 20 kt S of 18N, and E less than 10 kt elsewhere. Seas 4 to 6 ft. .FRI...E winds 10 to 20 kt S of 18N, and SE less than 10 kt elsewhere. Seas 4 to 6 ft S of 18N, and 3 ft elsewhere. .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 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. Caribbean from 11N to 15N W of 72W .TONIGHT...NE winds 15 to 25 kt within 90 nm of coast of Colombia, and NE 10 to 20 kt elsewhere. 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. .SAT...E winds 10 to 20 kt. Seas 4 to 6 ft. .SAT NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. .SUN...E winds 10 to 20 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...NE winds 10 to 20 kt. Seas 5 to 7 ft. SW Caribbean S of 11N .TONIGHT...N winds less than 10 kt. Seas 4 to 6 ft. .THU...NE winds less than 10 kt, shifting to S in the afternoon. Seas 4 to 6 ft. .THU NIGHT...W winds less than 10 kt. Seas 4 to 6 ft. .FRI...SW winds less than 10 kt. Seas 3 to 5 ft. .FRI NIGHT...W winds less than 10 kt. Seas 3 to 4 ft. .SAT...W winds less than 10 kt in the morning, becoming variable winds less than 10 kt. Seas 3 to 4 ft. .SAT NIGHT...N winds less than 10 kt. Seas 3 to 4 ft. .SUN...N winds less than 10 kt. Seas 4 to 6 ft. .SUN NIGHT...N winds less than 10 kt. Seas 4 to 6 ft. .MON...W winds less than 10 kt. Seas 4 to 6 ft. .MON NIGHT...NW winds less than 10 kt. Seas 4 to 6 ft. Caribbean between 64W and 72W .TONIGHT...E winds 15 to 25 kt Gulf of Venezuela, and E 10 to 20 kt elsewhere. Seas 4 to 6 ft. .THU...E winds 10 to 20 kt. Seas 4 to 6 ft. .THU NIGHT...E winds 15 to 25 kt Gulf of Venezuela, and E 10 to 20 kt elsewhere. Seas 4 to 6 ft. .FRI...Gulf of Venezuela, E winds 15 to 25 kt, shifting to NE 10 to 15 kt in the afternoon. Elsewhere, E winds 10 to 20 kt. Seas 4 to 6 ft. .FRI NIGHT...E winds 10 to 20 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 10 to 20 kt. Seas 3 to 5 ft. .MON...E winds 10 to 20 kt. Seas 3 to 5 ft. .MON NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft. Offshore Leeward Islands and adjacent ATLC waters from 15N to 19N W of 55W .TONIGHT...E winds less than 10 kt. Seas 4 to 6 ft. .THU...E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 3 to 5 ft. .THU NIGHT...E winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 3 to 5 ft. .FRI...E winds 10 to 15 kt. Seas 3 to 5 ft. .FRI NIGHT...E winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 3 to 5 ft. .SAT...E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. 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. Seas 3 to 4 ft. .SUN NIGHT...E winds less than 10 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. Offshore Windward Islands and adjacent ATLC waters from 07N to 15N W of 55W .TONIGHT...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 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 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 4 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. Synopsis for the the SW N Atlantic including the Bahamas .SYNOPSIS...A frontal boundary extending from 31N73W to north- central Florida will lift N tonight, then will remain nearly stationary along 30N and W of 75W through at least Fri. The Atlantic ridge will dominate the remainder of the forecast area producing a gentle to moderate anticyclonic flow. Another weak front may move into the NW waters by the end of the week into the weekend. ATLC waters from 27N to 31N W of 77W .TONIGHT...E winds less than 10 kt. Seas 3 to 4 ft. .THU...Variable winds less than 10 kt. Seas 3 ft. .THU NIGHT...Variable winds less than 10 kt, becoming S less than 10 kt after midnight. Seas 3 ft. .FRI...Variable winds less than 10 kt, becoming N less than 10 kt in the afternoon. Seas 3 ft. .FRI NIGHT...NE winds 10 to 15 kt, shifting to E after midnight. Seas 3 to 4 ft. .SAT...NE winds less than 10 kt. Seas 3 ft. .SAT NIGHT...SE winds less than 10 kt. Seas 3 ft. .SUN...NE winds less than 10 kt. Seas 3 ft. .SUN NIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft. .MON...NE winds less than 10 kt. Seas 3 to 5 ft. .MON NIGHT...NE winds less than 10 kt in the evening, becoming variable winds less than 10 kt. Seas 3 to 5 ft. ATLC waters from 27N to 31N between 65W and 77W .TONIGHT...SW winds less than 10 kt, shifting to SE after midnight. Seas 3 to 4 ft. .THU...SE winds less than 10 kt. Seas 3 to 4 ft. .THU NIGHT...W of 70W, Variable winds less than 10 kt, becoming SE 10 kt after midnight. Elsewhere, SE winds 10 kt. Seas 3 to 4 ft. .FRI...SW winds less than 10 kt. Seas 3 to 4 ft. .FRI NIGHT...Variable winds less than 10 kt. Seas 3 to 4 ft. .SAT...S winds less than 10 kt. Seas 3 ft. .SAT NIGHT...Variable winds less than 10 kt, becoming S less than 10 kt after midnight. Seas 3 ft. .SUN...S winds less than 10 kt. Seas 3 ft. .SUN NIGHT...SE winds less than 10 kt. Seas 3 ft. .MON...S winds less than 10 kt. Seas 3 to 4 ft. .MON NIGHT...S winds less than 10 kt. Seas 3 to 4 ft. Bahamas N of 22N .TONIGHT...E winds 10 to 15 kt. Seas 3 ft. .THU...E winds 10 to 15 kt. Seas 3 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 3 ft in the evening, subsiding to 2 ft or less. .FRI...SE winds less than 10 kt. Seas 2 ft or less. .FRI NIGHT...SE winds less than 10 kt. Seas 2 ft or less. .SAT...S winds less than 10 kt. Seas 2 ft or less. .SAT NIGHT...SE winds less than 10 kt. Seas 2 ft or less. .SUN...SW winds less than 10 kt. Seas 2 ft or less. .SUN NIGHT...Variable winds less than 10 kt, becoming E less than 10 kt after midnight. Seas 2 ft or less. .MON...S winds less than 10 kt. Seas 2 ft or less. .MON NIGHT...S winds less than 10 kt. Seas 2 ft or less. ATLC waters from 22N to 27N between 65W and the Bahamas .TONIGHT...E winds less than 10 kt. Seas 3 to 5 ft. .THU...SE winds 10 kt. Seas 3 to 4 ft. .THU NIGHT...SE winds less than 10 kt. Seas 3 to 4 ft. .FRI...S winds less than 10 kt. Seas 3 to 4 ft. .FRI NIGHT...Variable winds less than 10 kt, becoming SE less than 10 kt after midnight. Seas 3 to 4 ft. .SAT...SE winds less than 10 kt. Seas 3 ft. .SAT NIGHT...SE winds less than 10 kt. Seas 3 ft. .SUN...SE winds less than 10 kt. Seas 3 ft. .SUN NIGHT...SE winds less than 10 kt. Seas 3 ft. .MON...S winds less than 10 kt. Seas 3 ft. .MON NIGHT...SE winds less than 10 kt. Seas 3 ft. ATLC waters S of 22N W of 65W .TONIGHT...E winds 10 to 15 kt. Seas 4 to 5 ft. .THU...E winds 10 to 15 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, diminishing to less than 10 kt in the afternoon. Seas 3 to 4 ft. .FRI NIGHT...E winds less than 10 kt. Seas 3 ft. .SAT...E winds less than 10 kt. Seas 3 ft in the morning, subsiding to 2 ft or less. .SAT NIGHT...E winds less than 10 kt. Seas 2 ft or less. .SUN...E winds less than 10 kt. Seas 3 ft. .SUN NIGHT...E winds 10 to 15 kt. Seas 3 ft. .MON...E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 3 ft. .MON NIGHT...E winds 10 to 15 kt. Seas 3 ft. ATLC waters from 19N to 22N between 55W and 65W .TONIGHT...SE winds 10 to 15 kt. Seas 5 to 6 ft. .THU...SE winds 10 to 15 kt. Seas 4 to 5 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 4 to 5 ft. .FRI...E winds 10 to 15 kt. Seas 4 ft. .FRI NIGHT...E winds 10 kt. Seas 3 to 4 ft. .SAT...E winds 10 kt. Seas 3 to 4 ft. .SAT NIGHT...E winds 10 kt. Seas 3 ft. .SUN...E winds 10 kt. Seas 3 to 4 ft. .SUN NIGHT...E winds 10 kt. Seas 3 to 4 ft. .MON...E winds 10 kt. Seas 3 to 4 ft. .MON NIGHT...E winds 10 kt. Seas 3 to 4 ft.