000 FZNT31 KNHC 201509 OFFN20 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 1009 AM EST Wed Nov 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...A cold front in the Gulf of Mexico will approach the NW Caribbean today with a band of showers and thunderstorms ahead of it. The front is forecast to enter the NW Caribbean tonight, reaching from central Cuba to the Gulf of Honduras by Thu morning, and from eastern Cuba to NE Honduras by Fri morning. Fresh to strong N winds and building seas will follow the front, forecast to extend from near the Windward Passage to the Costa Rica and Panama border early on Sat, where the front should stall and gradually dissipated. NW Caribbean W of 85W .TODAY...SE winds 10 to 15 kt, shifting to S in the afternoon. Seas 3 to 5 ft. .TONIGHT...NE winds less than 10 kt, becoming N 10 to 20 kt after midnight. Seas 3 to 5 ft. .THU...N winds 10 to 20 kt. Seas 4 to 6 ft. .THU NIGHT...N winds 10 to 20 kt. Seas 6 to 8 ft. .FRI...N winds 10 to 20 kt. Seas 5 to 7 ft. .FRI NIGHT...N winds 10 to 20 kt. Seas 4 to 6 ft. .SAT...N winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 3 to 5 ft. .SAT NIGHT...NE winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 3 to 4 ft. .SUN...NE winds less than 10 kt. Seas 3 to 4 ft. .SUN NIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. Caribbean N of 15N between 72W and 85W .TODAY...E winds less than 10 kt. Seas 3 ft in the morning, subsiding to 2 ft or less. .TONIGHT...E winds less than 10 kt. Seas 2 ft or less. .THU...S of 18N, NE winds less than 10 kt. Elsewhere, NE winds less than 10 kt, shifting to N in the afternoon. Seas 2 ft or less, building to 3 ft in the afternoon. .THU NIGHT...NE winds less than 10 kt S of 18N, and N 10 to 20 kt elsewhere. 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 3 to 5 ft. .SAT NIGHT...NE winds 10 to 20 kt. Seas 4 to 6 ft. .SUN...NE winds 10 to 20 kt. Seas 3 to 5 ft. .SUN NIGHT...NE winds 10 to 20 kt. Seas 4 to 6 ft. Caribbean from 11N to 15N W of 72W .TODAY...E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 3 to 4 ft. .TONIGHT...E winds 10 to 15 kt within 90 nm of coast of Colombia, and NE less than 10 kt elsewhere. Seas 3 to 4 ft. .THU...NE winds less than 10 kt. Seas 3 ft. .THU NIGHT...NE winds less than 10 kt. Seas 3 ft in the evening, subsiding to 2 ft or less. .FRI...NE winds less than 10 kt. Seas 2 ft or less, building to 3 ft in the afternoon. .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 20 kt. Seas 4 to 6 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. SW Caribbean S of 11N .TODAY...NW winds less than 10 kt in the morning, becoming variable winds less than 10 kt. Seas 3 ft. .TONIGHT...Variable winds less than 10 kt. Seas 3 ft. .THU...Variable winds less than 10 kt. Seas 3 ft in the morning, subsiding to 2 ft or less. .THU NIGHT...NW winds less than 10 kt in the evening, becoming variable winds less than 10 kt. Seas 2 ft or less. .FRI...NW winds less than 10 kt. Seas 2 ft or less. .FRI NIGHT...N winds less than 10 kt, shifting to NW after midnight. Seas 2 ft or less, building to 3 to 4 ft after midnight. .SAT...N winds 10 to 15 kt. Seas 3 to 5 ft. .SAT NIGHT...N winds 10 to 15 kt, diminishing to less than 10 kt after midnight. Seas 3 to 5 ft. .SUN...W winds less than 10 kt. Seas 3 to 5 ft. .SUN NIGHT...NW winds less than 10 kt in the evening, becoming variable winds less than 10 kt. Seas 3 to 4 ft. Caribbean between 64W and 72W .TODAY...NE 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. .TONIGHT...E winds less than 10 kt. Seas 3 ft. .THU...E winds less than 10 kt. Seas 3 ft. .THU NIGHT...E winds less than 10 kt. Seas 3 ft in the evening, subsiding to 2 ft or less. .FRI...E winds less than 10 kt. Seas 2 ft or less. .FRI NIGHT...E winds 10 to 15 kt. Seas 2 ft or less, building to 3 ft after midnight. .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 5 ft. .SUN NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. Offshore Leeward Islands and adjacent ATLC waters from 15N to 19N W of 55W .TODAY...SE winds less than 10 kt. Seas 3 to 5 ft. .TONIGHT...Variable winds less than 10 kt, becoming E less than 10 kt after midnight. Seas 3 to 5 ft. .THU...SE winds less than 10 kt. Seas 3 to 5 ft. .THU NIGHT...SE winds less than 10 kt. Seas 3 to 5 ft. .FRI...SE winds less than 10 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 6 ft. .SAT NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .SUN...E winds 10 to 15 kt. Seas 4 to 6 ft. .SUN NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. Offshore Windward Islands and adjacent ATLC waters from 07N to 15N W of 55W .TODAY...SE winds 10 to 15 kt, shifting to E in the afternoon. Seas 3 to 5 ft. .TONIGHT...E winds less than 10 kt. Seas 3 to 5 ft. .THU...E winds less than 10 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, diminishing to less than 10 kt in the afternoon. Seas 3 to 5 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 4 to 6 ft. .SUN...E winds 10 to 15 kt. Seas 4 to 6 ft. .SUN NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. Synopsis for the the SW N Atlantic including the Bahamas .SYNOPSIS...A weak stationary front in the far SE waters will dissipate today. In the NE waters, a reinforcing cold front is moving across with fresh to strong winds. This feature will also reinforce northerly swell of 8 to 12 ft currently affecting the waters N of 22N and E of 67W. The next cold front is forecast to move into the NW waters later today, reaching from 31N74W to central Cuba by Thu morning, from 31N68W to eastern Cuba by Fri morning, and from 31N61W to near the Windward Passage on Sat morning. Then, the front will stall in that general vicinity and gradually dissipate through the end of the weekend. Expect fresh to strong winds and building seas on either side of the front N of 25N. A band of showers and thunderstorms is ahead of the front. ATLC waters from 27N to 31N W of 77W .TODAY...SW winds 10 to 20 kt. Seas 4 to 6 ft. .TONIGHT...W winds 15 to 25 kt. Seas 4 to 6 ft. .THU...NW winds 15 to 25 kt. Seas 5 to 7 ft. .THU NIGHT...NW winds 15 to 25 kt. Seas 6 to 8 ft. .FRI...NW winds 20 to 30 kt. Seas 6 to 8 ft, building to 8 to 11 ft in the afternoon. .FRI NIGHT...NW winds 15 to 25 kt. Seas 7 to 10 ft. .SAT...NW winds 10 to 15 kt. Seas 4 to 6 ft. .SAT NIGHT...Variable winds less than 10 kt. Seas 3 to 4 ft. .SUN...W winds less than 10 kt. Seas 3 ft. .SUN NIGHT...Variable winds less than 10 kt. Seas 2 ft or less. ATLC waters from 27N to 31N between 65W and 77W .TODAY...W winds 10 to 15 kt. Seas 3 to 5 ft W of 70W, and 5 to 7 ft elsewhere. .TONIGHT...SW winds 10 to 20 kt. Seas 5 to 7 ft. .THU...W winds 10 to 20 kt. Seas 5 to 7 ft. .THU NIGHT...W winds 10 to 20 kt. Seas 6 to 8 ft. .FRI...W winds 15 to 25 kt. Seas 6 to 8 ft, building to 8 to 11 ft in the afternoon. .FRI NIGHT...W winds 15 to 25 kt. Seas 8 to 12 ft. .SAT...W winds 10 to 20 kt. Seas 8 to 11 ft. .SAT NIGHT...NW winds 10 to 15 kt, diminishing to less than 10 kt after midnight. Seas 6 to 9 ft. .SUN...NW winds less than 10 kt. Seas 6 to 8 ft. .SUN NIGHT...NW winds less than 10 kt. Seas 4 to 6 ft. Bahamas N of 22N .TODAY...S winds less than 10 kt. Seas 2 ft or less. .TONIGHT...S winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 2 ft or less. .THU...SW winds 10 to 15 kt. Seas 2 ft or less, building to 3 ft in the afternoon. .THU NIGHT...NW winds 10 to 15 kt. Seas 3 to 4 ft. .FRI...NW winds 10 to 20 kt. Seas 3 to 5 ft. .FRI NIGHT...NW winds 10 to 20 kt. Seas 3 to 5 ft. .SAT...N winds less than 10 kt. Seas 3 to 4 ft. .SAT NIGHT...NE winds less than 10 kt. Seas 3 ft in the evening, subsiding to 2 ft or less. .SUN...NE winds less than 10 kt. Seas 2 ft or less. .SUN NIGHT...E winds 10 to 15 kt. Seas 3 ft. ATLC waters from 22N to 27N between 65W and the Bahamas .TODAY...Variable winds less than 10 kt. Seas 4 to 6 ft. .TONIGHT...SW winds less than 10 kt. Seas 3 to 5 ft. .THU...SW winds 10 to 15 kt W of 70W, and SW less than 10 kt elsewhere. Seas 3 to 5 ft. .THU NIGHT...W of 70W, SW winds 10 to 15 kt. Elsewhere, S winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 4 to 6 ft. .FRI...SW winds 10 to 20 kt. Seas 5 to 7 ft. .FRI NIGHT...W winds 10 to 20 kt. Seas 5 to 7 ft. .SAT...NW winds 10 kt. Seas 6 to 8 ft. .SAT NIGHT...NE winds less than 10 kt. Seas 6 to 8 ft. .SUN...NE winds 10 to 15 kt. Seas 5 to 7 ft. .SUN NIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. ATLC waters S of 22N W of 65W .TODAY...NE winds less than 10 kt. Seas 3 to 5 ft. .TONIGHT...E winds less than 10 kt. Seas 3 to 5 ft. .THU...E winds less than 10 kt. Seas 3 to 4 ft. .THU NIGHT...SE winds less than 10 kt. Seas 3 to 4 ft. .FRI...SW winds less than 10 kt. Seas 3 to 4 ft. .FRI NIGHT...SW winds less than 10 kt, shifting to W after midnight. Seas 3 to 4 ft. .SAT...N winds less than 10 kt. Seas 3 to 4 ft. .SAT NIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft. .SUN...NE winds 10 to 15 kt. Seas 4 to 6 ft. .SUN NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. ATLC waters from 19N to 22N between 55W and 65W .TODAY...NE winds less than 10 kt. Seas 5 to 7 ft. .TONIGHT...E winds less than 10 kt. Seas 5 to 6 ft. .THU...E winds 10 kt. Seas 5 to 6 ft. .THU NIGHT...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...SE winds 10 to 15 kt. Seas 4 to 6 ft. .SAT...SE winds less than 10 kt. Seas 4 to 6 ft. .SAT NIGHT...E winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 4 to 5 ft. .SUN...E winds 10 to 15 kt. Seas 4 to 6 ft. .SUN NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft.