000 FZNT31 KNHC 051518 OFFN20 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 1118 AM EDT Sat Apr 5 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 strong pressure gradient between the Bermuda High and the Colombian Low will continue to produce strong trade winds across the central Caribbean, the Atlantic Passages and the Gulf of Honduras through tonight, with another pulse of gale-force winds offshore of Colombia tonight. Rough to very rough seas will accompany these winds. The Bermuda high will weaken and shift eastward late Sun through mid-week, leading to diminishing trades across the Caribbean. A cold front is expected to reach the northwest Caribbean early Tue, with winds shifting to northerly behind it. The front will then stall from central Cuba to the Gulf of Honduras and dissipate through Wed night. NW Caribbean W of 85W .THIS AFTERNOON...SE winds 15 to 25 kt. Seas 6 to 9 ft. .TONIGHT...E winds 20 to 30 kt. Seas 7 to 10 ft. .SUN...SE winds 15 to 25 kt. Seas 7 to 10 ft. .SUN NIGHT...SE winds 15 to 25 kt. Seas 6 to 9 ft. .MON...SE winds 10 to 20 kt. Seas 6 to 8 ft. .MON NIGHT...SE winds 10 to 15 kt, diminishing to less than 10 kt after midnight. Seas 4 to 6 ft. .TUE...NW winds 10 to 15 kt. Seas 4 to 6 ft. .TUE NIGHT...N winds 10 to 20 kt. Seas 4 to 6 ft. .WED...N winds 10 to 20 kt. Seas 4 to 6 ft. .WED NIGHT...N winds 10 to 15 kt. Seas 4 to 6 ft. Caribbean N of 15N between 72W and 85W .THIS AFTERNOON...E winds 15 to 25 kt S of 18N, and E 10 to 20 kt elsewhere. Seas 7 to 10 ft S of 18N, and 5 to 7 ft elsewhere. .TONIGHT...E winds 10 to 20 kt. Seas 7 to 10 ft S of 18N, and 4 to 6 ft elsewhere. .SUN...E winds 10 to 20 kt. Seas 6 to 9 ft S of 18N, and 4 to 6 ft elsewhere. .SUN NIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft S of 18N, and 4 to 6 ft elsewhere. .MON...E winds 10 to 20 kt. Seas 5 to 7 ft. .MON NIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft. .TUE...SE winds 10 to 15 kt. Seas 4 to 6 ft. .TUE NIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft. .WED...NE winds 10 to 15 kt. Seas 3 to 5 ft. .WED NIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft. Caribbean from 11N to 15N W of 72W ...GALE WARNING... .THIS AFTERNOON...E winds 15 to 25 kt. Seas 8 to 13 ft. .TONIGHT...E winds 20 to 30 kt within 90 nm of coast of Colombia, and E 15 to 25 kt elsewhere. Seas 8 to 11 ft. .SUN...Within 90 nm of coast of Colombia, E winds 20 to 30 kt, diminishing to 15 to 20 kt in the afternoon. Elsewhere, E winds 10 to 20 kt. Seas 8 to 11 ft. .SUN NIGHT...E winds 20 to 25 kt within 90 nm of coast of Colombia, and E 10 to 20 kt elsewhere. Seas 6 to 9 ft. .MON...E winds 10 to 20 kt. Seas 6 to 9 ft. .MON NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. .TUE...E winds 10 to 20 kt. Seas 5 to 7 ft. .TUE NIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. .WED...NE winds 10 to 15 kt. Seas 4 to 6 ft. .WED NIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. SW Caribbean S of 11N .THIS AFTERNOON...NE winds 10 to 20 kt. Seas 8 to 11 ft. .TONIGHT...NE winds 10 to 20 kt. Seas 7 to 10 ft. .SUN...NE winds 10 to 15 kt. Seas 7 to 10 ft. .SUN NIGHT...NE winds 10 to 15 kt. Seas 6 to 9 ft. .MON...NE winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 5 to 7 ft. .MON NIGHT...N winds less than 10 kt. Seas 5 to 7 ft. .TUE...N winds less than 10 kt. Seas 4 to 6 ft. .TUE NIGHT...N winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 3 to 5 ft. .WED...N winds 10 to 15 kt. Seas 4 to 6 ft. .WED NIGHT...N winds 10 to 15 kt. Seas 4 to 6 ft. Caribbean between 64W and 72W .THIS AFTERNOON...E winds 10 to 20 kt. Seas 3 to 5 ft Gulf of Venezuela, and 6 to 9 ft elsewhere. .TONIGHT...E winds 20 to 25 kt Gulf of Venezuela, and E 10 to 20 kt elsewhere. Seas 3 to 5 ft Gulf of Venezuela, and 6 to 9 ft elsewhere. .SUN...E winds 15 to 25 kt Gulf of Venezuela, and E 10 to 20 kt elsewhere. Seas 3 to 5 ft Gulf of Venezuela, and 6 to 8 ft elsewhere. .SUN NIGHT...E winds 15 to 25 kt Gulf of Venezuela, and E 10 to 20 kt elsewhere. Seas 5 to 7 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. .TUE...E winds 10 to 15 kt. Seas 4 to 6 ft. .TUE NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .WED...E winds 10 to 15 kt. Seas 4 to 6 ft. .WED NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. Offshore Leeward Islands and adjacent ATLC waters from 15N to 19N W of 55W .THIS AFTERNOON...E winds 10 to 20 kt. Seas 6 to 9 ft. .TONIGHT...E winds 10 to 15 kt. Seas 6 to 8 ft. .SUN...E winds 10 to 15 kt. Seas 5 to 7 ft. .SUN NIGHT...NE 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. .TUE...E winds 10 to 15 kt. Seas 6 to 9 ft. .TUE NIGHT...E winds 10 to 15 kt. Seas 6 to 8 ft. .WED...E winds 10 to 15 kt. Seas 6 to 9 ft. .WED NIGHT...E winds 10 to 15 kt. Seas 6 to 8 ft. Offshore Windward Islands and adjacent ATLC waters from 07N to 15N W of 55W .THIS AFTERNOON...E winds 10 to 20 kt. Seas 6 to 9 ft. .TONIGHT...E winds 10 to 15 kt. Seas 6 to 9 ft. .SUN...E winds 10 to 15 kt. Seas 5 to 7 ft. .SUN NIGHT...E winds 10 to 15 kt. Seas 5 to 7 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. .TUE...E winds 10 to 15 kt. Seas 5 to 7 ft. .TUE NIGHT...E winds 10 to 15 kt. Seas 6 to 8 ft. .WED...E winds 10 to 15 kt. Seas 6 to 9 ft. .WED NIGHT...E winds 10 to 15 kt. Seas 6 to 8 ft. Synopsis for the the SW N Atlantic including the Bahamas .SYNOPSIS...A broad ridge along 30N associated with the Bermuda High will continue to force fresh to strong trades and rough seas from offshore of the Greater Antilles through the Bahamas and Straits of Florida through tonight. A frontal trough will rotate through the NE waters today and tonight, bringing fresh to strong winds there through tonight. At the same time, large N swell will start impacting the waters east of 65W tonight and will subside by late Wed. Fresh to strong S winds will develop off the coast of northeast Florida tonight and Mon ahead of a cold front moving through the southeastern United States. The front is forecast to move off of the coast Mon night, and reach from Bermuda to eastern Cuba by mid-week where it will stall and weaken to a trough. This front will be followed by fresh to strong NE winds and moderate to rough seas. ATLC waters from 27N to 31N W of 77W .THIS AFTERNOON...SE winds 10 to 15 kt. Seas 5 to 6 ft. .TONIGHT...SE winds 10 to 20 kt. Seas 4 to 6 ft. .SUN...S winds 10 to 20 kt. Seas 4 to 6 ft. .SUN NIGHT...S winds 10 to 20 kt. Seas 5 to 7 ft. .MON...S winds 10 to 20 kt. Seas 5 to 7 ft. .MON NIGHT...SW winds 10 to 20 kt. Seas 5 to 7 ft. .TUE...NW winds 10 to 15 kt. Seas 5 to 7 ft. .TUE NIGHT...N winds 10 to 15 kt. Seas 4 to 6 ft. .WED...NE winds 15 to 25 kt. Seas 5 to 7 ft, building to 7 to 10 ft in the afternoon. .WED NIGHT...NE winds 15 to 25 kt. Seas 8 to 11 ft. ATLC waters from 27N to 31N between 65W and 77W .THIS AFTERNOON...E winds less than 10 kt. Seas 4 to 6 ft. .TONIGHT...E winds less than 10 kt. Seas 3 to 5 ft. .SUN...W of 70W, SE winds 10 to 15 kt. Elsewhere, E winds less than 10 kt in the morning, becoming variable winds less than 10 kt. Seas 3 to 5 ft. .SUN NIGHT...W of 70W, S winds 10 to 15 kt. Elsewhere, Variable winds less than 10 kt, becoming SE less than 10 kt after midnight. Seas 3 to 5 ft. .MON...S winds 10 to 15 kt. Seas 4 to 6 ft. .MON NIGHT...S winds 10 to 20 kt. Seas 4 to 6 ft. .TUE...SW winds 10 to 20 kt. Seas 5 to 7 ft. .TUE NIGHT...SW winds 10 to 15 kt. Seas 5 to 7 ft. .WED...SE winds 10 to 15 kt. Seas 7 to 10 ft. .WED NIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft. Bahamas N of 22N .THIS AFTERNOON...E winds 10 to 20 kt. Seas 4 to 6 ft. .TONIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. .SUN...SE winds 10 to 15 kt. Seas 3 to 5 ft. .SUN NIGHT...SE winds 10 to 15 kt. Seas 3 to 4 ft. .MON...SE winds 10 to 15 kt. Seas 3 to 4 ft. .MON NIGHT...SE winds 10 to 15 kt. Seas 3 ft. .TUE...S winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 3 ft. .TUE NIGHT...SE winds less than 10 kt. Seas 2 ft or less. .WED...SW winds less than 10 kt. Seas 3 to 4 ft. .WED NIGHT...N winds 10 to 15 kt. Seas 3 to 4 ft. ATLC waters from 22N to 27N between 65W and the Bahamas .THIS AFTERNOON...E winds 10 to 15 kt. Seas 6 to 8 ft. .TONIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. .SUN...E winds 10 to 15 kt. Seas 4 to 6 ft. .SUN NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .MON...SE winds 10 to 15 kt. Seas 4 to 6 ft. .MON NIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft. .TUE...S winds 10 to 15 kt. Seas 5 to 7 ft. .TUE NIGHT...SE winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 5 to 7 ft. .WED...SE winds 10 to 15 kt. Seas 5 to 6 ft. .WED NIGHT...SE winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 5 to 7 ft. ATLC waters S of 22N W of 65W .THIS AFTERNOON...E winds 10 to 20 kt. Seas 6 to 9 ft. .TONIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft. .SUN...E winds 10 to 20 kt. Seas 5 to 7 ft. .SUN NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. .MON...E winds 10 to 15 kt. Seas 4 to 6 ft. .MON NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. .TUE...SE winds 10 to 15 kt. Seas 4 to 6 ft. .TUE NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .WED...E winds 10 to 15 kt. Seas 4 to 6 ft. .WED NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. ATLC waters from 19N to 22N between 55W and 65W .THIS AFTERNOON...E winds 10 to 15 kt. Seas 6 to 8 ft. .TONIGHT...NE winds 10 to 15 kt. Seas 6 to 7 ft. .SUN...NE winds 10 to 15 kt. Seas 5 to 6 ft. .SUN NIGHT...NE winds 10 to 15 kt. Seas 5 to 6 ft. .MON...E winds 10 to 15 kt. Seas 6 to 8 ft. .MON NIGHT...E winds 10 to 15 kt. Seas 6 to 9 ft. .TUE...E winds 10 to 15 kt. Seas 7 to 10 ft. .TUE NIGHT...E winds 10 to 15 kt. Seas 7 to 10 ft. .WED...E winds 10 to 15 kt. Seas 7 to 9 ft. .WED NIGHT...E winds 10 to 15 kt. Seas 6 to 8 ft.