415 FZNT31 KNHC 150825 OFFN20 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 425 AM EDT Thu May 15 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...High pressure across the western Atlantic extending a ridge southwestward into the Bahamas will support fresh trades E of 80W through today. The high pressure will then slide SE and across the central Atlantic subtropical waters through the weekend, which will keep mainly moderate to fresh trades across the central and eastern Caribbean through Fri night, and gentle to moderate easterly winds through the weekend. Fresh trades and moderate to rough seas in easterly trade wind swell will prevail over the tropical Atlantic waters and passages through Sat night. Otherwise, pulsing fresh to strong E winds will develop each night across the Gulf of Honduras through the weekend. NW Caribbean W of 85W .TODAY...E winds 10 to 20 kt. Seas 4 to 6 ft. .TONIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. .FRI...E winds 10 to 20 kt. Seas 4 to 6 ft. .FRI NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft. .SAT...E winds 10 to 20 kt. Seas 3 to 5 ft. .SAT NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft. .SUN...E winds 10 to 20 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. Caribbean N of 15N between 72W and 85W .TODAY...E winds 10 to 15 kt S of 18N, and E less than 10 kt elsewhere. Seas 4 to 6 ft S of 18N, and 3 ft elsewhere. .TONIGHT...E winds 10 to 15 kt S of 18N, and E less than 10 kt elsewhere. Seas 4 to 6 ft S of 18N, and 2 ft or less elsewhere. .FRI...E winds 10 to 15 kt. Seas 4 to 6 ft S of 18N, and 3 ft elsewhere. .FRI NIGHT...S of 18N, E winds 10 to 15 kt, seas 3 to 5 ft. Elsewhere, E winds less than 10 kt, increasing to 10 to 15 kt after midnight,Seas 2 ft or less, building to 3 ft after midnight. .SAT...E winds 10 to 15 kt. Seas 3 to 5 ft. .SAT NIGHT...E winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 3 to 4 ft. .SUN...E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 3 to 4 ft. .SUN NIGHT...E winds less than 10 kt. Seas 3 to 4 ft. .MON...E winds less than 10 kt. Seas 3 to 4 ft. .MON NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. Caribbean from 11N to 15N W of 72W .TODAY...E winds 10 to 15 kt. Seas 4 to 6 ft. .TONIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. .FRI...E winds 10 to 15 kt. Seas 4 to 6 ft. .FRI NIGHT...NE 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 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 less than 10 kt. Seas 3 to 4 ft. .MON NIGHT...E winds less than 10 kt. Seas 3 to 4 ft. SW Caribbean S of 11N .TODAY...SE winds less than 10 kt. Seas 3 to 5 ft. .TONIGHT...NW winds less than 10 kt. Seas 3 to 4 ft. .FRI...Variable winds less than 10 kt, becoming W less than 10 kt in the afternoon. Seas 3 to 4 ft. .FRI NIGHT...NW winds less than 10 kt in the evening, becoming variable winds less than 10 kt. Seas 3 ft. .SAT...Variable winds less than 10 kt, becoming W less than 10 kt in the afternoon. Seas 3 ft. .SAT NIGHT...Variable winds less than 10 kt. Seas 3 ft. .SUN...Variable winds less than 10 kt. Seas 3 ft. .SUN NIGHT...Variable winds less than 10 kt. Seas 3 ft in the evening, subsiding to 2 ft or less. .MON...Variable winds less than 10 kt. Seas 2 ft or less. .MON NIGHT...Variable winds less than 10 kt. Seas 2 ft or less. Caribbean between 64W and 72W .TODAY...E winds 10 to 20 kt. Seas 3 to 4 ft Gulf of Venezuela, and 4 to 6 ft elsewhere. .TONIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. .FRI...Gulf of Venezuela, E winds 10 to 20 kt, becoming NE less than 10 kt in the afternoon,Seas 3 to 4 ft in the morning, subsiding to 2 ft or less. Elsewhere, E winds 10 to 15 kt,Seas 4 to 6 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 2 ft or less Gulf of Venezuela, and 4 to 6 ft elsewhere. .SAT...E winds 10 to 15 kt. Seas 4 to 5 ft. .SAT NIGHT...E winds 10 to 15 kt. Seas 4 to 5 ft. .SUN...E winds 10 to 15 kt. Seas 4 to 6 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 15 kt. Seas 5 to 7 ft. Offshore Leeward Islands and adjacent ATLC waters from 15N to 19N W of 55W .TODAY...E winds 10 to 20 kt. Seas 6 to 8 ft. .TONIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft. .FRI...E winds 10 to 20 kt. Seas 6 to 8 ft. .FRI NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. .SAT...E winds 10 to 20 kt. Seas 5 to 7 ft. .SAT NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. .SUN...E winds 10 to 15 kt. Seas 6 to 8 ft. .SUN NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. .MON...SE winds 10 to 15 kt. Seas 5 to 7 ft. .MON NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. Offshore Windward Islands and adjacent ATLC waters from 07N to 15N W of 55W .TODAY...E winds 10 to 20 kt. Seas 5 to 7 ft. .TONIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft. .FRI...E winds 10 to 20 kt. Seas 6 to 8 ft. .FRI NIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft. .SAT...E winds 10 to 20 kt. Seas 6 to 9 ft. .SAT NIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft. .SUN...E winds 10 to 20 kt. Seas 6 to 8 ft. .SUN NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. .MON...E winds 10 to 15 kt. Seas 5 to 7 ft. .MON NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. Synopsis for the the SW N Atlantic including the Bahamas .SYNOPSIS...High pressure across the NW Atlantic extends a ridge southwestward to the Bahamas, while the remnants of a frontal trough persist offshore of Florida along 79W. This pattern is producing moderate to fresh trade winds S of 25N and E of 75W, while light to moderate SE winds prevail elsewhere. The high will slide SE and into the central Atlantic through the upcoming weekend, with ridging extending westward into central Florida. This will gradually lead to anticyclonic winds across the entire area by the weekend. Moderate to fresh trade winds and rough seas in mixed NE and E swell will prevail south of 22N this week, including across the Atlantic passages into the eastern Caribbean. ATLC waters from 27N to 31N W of 77W .TODAY...SW winds less than 10 kt. Seas 3 to 4 ft. .TONIGHT...S winds 10 to 15 kt. Seas 3 to 4 ft. .FRI...SW winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 3 to 4 ft. .FRI NIGHT...SW winds less than 10 kt, shifting to S after midnight. Seas 3 to 4 ft. .SAT...SW winds 10 to 15 kt. Seas 3 to 4 ft. .SAT NIGHT...SW winds 10 to 15 kt. Seas 3 to 4 ft. .SUN...SW winds 10 to 15 kt. Seas 3 to 4 ft. .SUN NIGHT...SW winds less than 10 kt. Seas 3 to 4 ft. .MON...W winds less than 10 kt. Seas 3 ft. .MON NIGHT...SW winds less than 10 kt. Seas 3 ft. ATLC waters from 27N to 31N between 65W and 77W .TODAY...S winds less than 10 kt. Seas 4 to 5 ft. .TONIGHT...S winds 10 kt. Seas 3 to 5 ft. .FRI...S winds less than 10 kt. Seas 3 to 4 ft. .FRI NIGHT...S winds less than 10 kt. Seas 3 to 4 ft. .SAT...SW winds less than 10 kt. Seas 3 to 4 ft. .SAT NIGHT...S winds less than 10 kt, shifting to SW after midnight. Seas 3 to 4 ft. .SUN...SW winds 10 to 15 kt. Seas 3 to 5 ft. .SUN NIGHT...SW winds 10 to 15 kt. Seas 3 to 5 ft. .MON...W winds 10 to 15 kt. Seas 3 to 5 ft. .MON NIGHT...W winds 10 to 15 kt, diminishing to less than 10 kt after midnight. Seas 3 to 5 ft. Bahamas N of 22N .TODAY...E winds less than 10 kt. Seas 3 to 4 ft. .TONIGHT...E winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 3 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 less than 10 kt. Seas 2 ft or less. .SAT NIGHT...E winds 10 to 15 kt. 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 less than 10 kt. Seas 2 ft or less. .MON...SE winds less than 10 kt. Seas 2 ft or less. .MON NIGHT...SE winds less than 10 kt. Seas 2 ft or less. ATLC waters from 22N to 27N between 65W and the Bahamas .TODAY...SE winds 10 to 15 kt. Seas 4 to 6 ft. .TONIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft. .FRI...E winds less than 10 kt W of 70W, and SE 10 to 15 kt elsewhere. Seas 4 to 5 ft. .FRI NIGHT...E winds less than 10 kt. Seas 3 to 5 ft. .SAT...E winds less than 10 kt. Seas 3 to 5 ft. .SAT NIGHT...E winds less than 10 kt. Seas 3 to 5 ft. .SUN...E winds less than 10 kt. Seas 3 to 5 ft. .SUN NIGHT...E winds less than 10 kt. Seas 3 to 5 ft. .MON...SE winds less than 10 kt in the morning, becoming variable winds less than 10 kt. Seas 3 to 5 ft. .MON NIGHT...Variable winds less than 10 kt. Seas 3 to 4 ft. ATLC waters S of 22N W of 65W .TODAY...E winds 10 to 20 kt. Seas 5 to 7 ft. .TONIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .FRI...SE 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, diminishing to less than 10 kt in the afternoon. 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, 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 less than 10 kt. Seas 3 to 5 ft. .MON NIGHT...E winds less than 10 kt. Seas 3 to 4 ft. ATLC waters from 19N to 22N between 55W and 65W .TODAY...E winds 10 to 15 kt. Seas 6 to 7 ft. .TONIGHT...E winds 15 to 20 kt. Seas 6 to 7 ft. .FRI...E winds 10 to 15 kt. Seas 6 to 7 ft. .FRI NIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft. .SAT...E winds 10 to 15 kt. Seas 6 to 8 ft. .SAT NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. .SUN...SE winds 10 to 15 kt. Seas 6 to 7 ft. .SUN NIGHT...SE winds 10 to 15 kt. Seas 5 to 6 ft. .MON...SE winds 10 to 15 kt. Seas 5 to 6 ft. .MON NIGHT...SE winds less than 10 kt. Seas 4 to 6 ft.