508 FZNT31 KNHC 171523 OFFN20 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 1023 AM EST Tue Dec 17 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...High pressure N of the area combined with the Colombian low will support fresh to strong winds and moderate to rough seas across the central Caribbean beginning tonight through Thu night. The highest seas are expected near the coast of Colombia. As the high pressure over the Atlantic moves eastward, expect fresh winds over the NE Caribbean tonight through Thu with moderate to rough seas in NE swell across the Atlantic passages. Elsewhere, moderate to fresh winds and slight to moderate seas are expected, with the exception of gentle to moderate winds in the NW Caribbean. NW Caribbean W of 85W .TODAY...NE winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 3 to 5 ft. .TONIGHT...NE winds less than 10 kt. Seas 3 to 4 ft. .WED...NE winds less than 10 kt. Seas 3 to 4 ft. .WED NIGHT...NE winds less than 10 kt. Seas 3 ft in the evening, subsiding to 2 ft or less. .THU...N winds less than 10 kt. Seas 2 ft or less. .THU NIGHT...N winds 10 to 15 kt. Seas 3 ft. .FRI...N winds 10 to 15 kt. Seas 3 to 5 ft. .FRI NIGHT...N winds 10 to 15 kt. Seas 3 to 5 ft. .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 4 ft. Caribbean N of 15N between 72W and 85W .TODAY...E winds 10 to 15 kt. Seas 3 to 5 ft. .TONIGHT...S of 18N, E winds 10 to 20 kt, seas 4 to 6 ft. Elsewhere, E winds less than 10 kt, increasing to 10 to 15 kt after midnight,Seas 2 ft or less, building to 3 to 4 ft after midnight. .WED...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 4 to 6 ft S of 18N, and 3 to 4 ft elsewhere. .WED NIGHT...NE winds 10 to 20 kt S of 18N, and NE less than 10 kt elsewhere. Seas 4 to 6 ft S of 18N, and 3 ft elsewhere. .THU...NE winds 10 to 20 kt. Seas 3 to 5 ft. .THU NIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft. .FRI...N winds 10 to 15 kt. Seas 3 to 5 ft. .FRI NIGHT...N winds 10 to 15 kt. Seas 3 to 5 ft. .SAT...NE winds 10 to 15 kt. Seas 3 to 5 ft. .SAT NIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft. Caribbean from 11N to 15N W of 72W .TODAY...NE winds 10 to 20 kt. Seas 3 to 5 ft. .TONIGHT...E winds 20 to 25 kt within 90 nm of coast of Colombia, and NE 10 to 20 kt elsewhere. Seas 4 to 6 ft. .WED...NE winds 10 to 20 kt. Seas 5 to 7 ft. .WED NIGHT...E winds 20 to 25 kt within 90 nm of coast of Colombia, and NE 10 to 20 kt elsewhere. Seas 5 to 7 ft. .THU...NE winds 10 to 20 kt. Seas 6 to 8 ft. .THU NIGHT...NE winds 10 to 20 kt. Seas 5 to 7 ft. .FRI...NE winds 10 to 15 kt. Seas 5 to 7 ft. .FRI NIGHT...NE winds 10 to 20 kt. Seas 5 to 6 ft. .SAT...NE winds 10 to 15 kt. Seas 4 to 6 ft. .SAT NIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. SW Caribbean S of 11N .TODAY...NE winds 10 to 15 kt. Seas 3 to 5 ft. .TONIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft. .WED...NE winds 10 to 15 kt. Seas 4 to 6 ft. .WED NIGHT...NE winds 10 to 20 kt. Seas 4 to 6 ft. .THU...NE winds 10 to 20 kt. Seas 5 to 7 ft. .THU NIGHT...N winds 10 to 15 kt. Seas 5 to 7 ft. .FRI...N winds 10 to 15 kt. Seas 5 to 7 ft. .FRI NIGHT...N winds 10 to 15 kt. Seas 4 to 6 ft. .SAT...NE winds 10 to 15 kt, shifting to N in the afternoon. Seas 3 to 5 ft. .SAT NIGHT...N winds less than 10 kt. Seas 3 to 5 ft. Caribbean between 64W and 72W .TODAY...E winds 10 to 15 kt. Seas 3 to 5 ft. .TONIGHT...E winds 20 to 25 kt Gulf of Venezuela, and E 10 to 20 kt elsewhere. Seas 4 to 6 ft. .WED...E winds 15 to 25 kt Gulf of Venezuela, and E 10 to 20 kt elsewhere. Seas 4 to 6 ft. .WED NIGHT...E winds 20 to 25 kt Gulf of Venezuela, and E 10 to 20 kt elsewhere. Seas 5 to 7 ft. .THU...E winds 10 to 20 kt. Seas 5 to 7 ft. .THU NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. .FRI...E winds 10 to 15 kt. Seas 4 to 6 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 4 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 4 ft. Offshore Leeward Islands and adjacent ATLC waters from 15N to 19N W of 55W .TODAY...E winds 10 to 15 kt. Seas 4 to 6 ft. .TONIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. .WED...E winds 10 to 20 kt. Seas 6 to 9 ft. .WED NIGHT...E winds 10 to 20 kt. Seas 7 to 10 ft. .THU...E winds 10 to 20 kt. Seas 7 to 10 ft. .THU NIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft. .FRI...E winds 10 to 20 kt. Seas 6 to 9 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. .SAT...E winds 10 to 15 kt. Seas 5 to 7 ft. .SAT 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 15 kt. Seas 4 to 6 ft. .TONIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .WED...E winds 10 to 15 kt. Seas 5 to 7 ft. .WED NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. .THU...E winds 10 to 20 kt. Seas 6 to 8 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. .FRI...E winds 10 to 15 kt. Seas 5 to 7 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. .SAT...E winds 10 to 15 kt. Seas 5 to 7 ft. .SAT NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. Synopsis for the the SW N Atlantic including the Bahamas .SYNOPSIS...The pressure gradient between high pressure of 1035 mb located NE of Bermuda and a low-level trough over the SE Bahamas and eastern Cuba continues to support fresh to strong E winds and rough seas E of the Bahamas to about 65W. A cold front is moving across the NE waters producing fresh to locally strong winds. Winds will diminish E of the Bahamas on Wed but increase across the waters S of 27N between 55W and 70W as the Atlantic high pressure moves eastward. These winds will diminish by Thu night as a low pressure develops E of area. The next cold front is forecast to move off the northeastern Florida coast Wed night, reach from near 32N71W to the central Bahamas by late Thu night and stall. A strong cold front may quickly merge with the stalled front late on Fri, followed by fresh to strong NW winds. ATLC waters from 27N to 31N W of 77W .TODAY...E winds 10 to 20 kt. Seas 6 to 9 ft. .TONIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft. .WED...SE winds 10 to 20 kt. Seas 6 to 8 ft. .WED NIGHT...S winds 10 to 20 kt. Seas 6 to 8 ft. .THU...N winds less than 10 kt. Seas 5 to 6 ft. .THU NIGHT...N winds less than 10 kt in the evening, becoming variable winds less than 10 kt. Seas 4 to 5 ft. .FRI...NW winds 10 to 20 kt. Seas 4 to 6 ft. .FRI NIGHT...NW winds 15 to 20 kt. Seas 6 to 8 ft. .SAT...N winds 10 to 15 kt. Seas 5 to 7 ft. .SAT NIGHT...N winds less than 10 kt. Seas 4 to 6 ft. ATLC waters from 27N to 31N between 65W and 77W .TODAY...E winds 10 to 20 kt. Seas 6 to 9 ft. .TONIGHT...E winds 10 to 15 kt. Seas 6 to 8 ft. .WED...SE winds 10 to 15 kt. Seas 6 to 8 ft. .WED NIGHT...SE winds 10 to 20 kt. Seas 6 to 8 ft. .THU...S winds 10 to 20 kt. Seas 6 to 8 ft. .THU NIGHT...S winds 10 to 15 kt. Seas 5 to 7 ft. .FRI...SW winds 10 to 15 kt. Seas 5 to 7 ft. .FRI NIGHT...W winds 10 to 20 kt. Seas 6 to 8 ft. .SAT...NW winds 10 to 20 kt. Seas 6 to 9 ft. .SAT NIGHT...NW winds 10 kt. Seas 6 to 8 ft. Bahamas N of 22N .TODAY...E winds 10 to 20 kt. Seas 4 to 6 ft. .TONIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. .WED...E winds 10 to 20 kt. Seas 4 to 6 ft. .WED NIGHT...SE winds 10 to 20 kt. Seas 4 to 6 ft. .THU...SE winds 10 to 15 kt. Seas 3 to 5 ft. .THU NIGHT...SE winds less than 10 kt. Seas 3 to 4 ft. .FRI...E winds less than 10 kt, shifting to NW in the afternoon. Seas 3 to 4 ft. .FRI NIGHT...NW winds less than 10 kt, shifting to N after midnight. Seas 3 to 4 ft. .SAT...N winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 3 to 4 ft. .SAT NIGHT...N winds 10 to 15 kt, shifting to NE after midnight. Seas 3 to 4 ft. ATLC waters from 22N to 27N between 65W and the Bahamas .TODAY...E winds 20 to 25 kt W of 70W, and E 10 to 20 kt elsewhere. Seas 8 to 10 ft. .TONIGHT...E winds 15 to 25 kt W of 70W, and E 10 to 20 kt elsewhere. Seas 7 to 10 ft. .WED...E winds 15 to 25 kt W of 70W, and E 10 to 20 kt elsewhere. Seas 7 to 10 ft. .WED NIGHT...E winds 10 to 20 kt W of 70W, and E 15 to 25 kt elsewhere. Seas 7 to 10 ft. .THU...SE winds 10 to 20 kt. Seas 7 to 10 ft. .THU NIGHT...SE winds 10 to 20 kt. Seas 6 to 9 ft. .FRI...S winds 10 to 15 kt. Seas 6 to 8 ft. .FRI NIGHT...SW winds 10 to 15 kt. Seas 5 to 7 ft. .SAT...W winds 10 to 15 kt. Seas 5 to 6 ft. .SAT NIGHT...N winds less than 10 kt. Seas 4 to 6 ft. ATLC waters S of 22N W of 65W .TODAY...E winds 10 to 20 kt. Seas 6 to 8 ft. .TONIGHT...E winds 15 to 25 kt. Seas 6 to 9 ft. .WED...E winds 15 to 25 kt. Seas 6 to 9 ft. .WED NIGHT...E winds 10 to 20 kt. Seas 7 to 10 ft. .THU...E winds 10 to 20 kt. Seas 7 to 10 ft. .THU NIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft. .FRI...SE winds 10 to 15 kt. Seas 5 to 7 ft. .FRI NIGHT...SE winds 10 to 15 kt, shifting to S after midnight. Seas 4 to 6 ft. .SAT...SE winds less than 10 kt. Seas 3 to 5 ft. .SAT NIGHT...E winds less than 10 kt. Seas 3 to 5 ft. ATLC waters from 19N to 22N between 55W and 65W .TODAY...E winds 10 to 20 kt. Seas 6 to 8 ft. .TONIGHT...E winds 15 to 20 kt. Seas 7 to 9 ft. .WED...E winds 15 to 20 kt. Seas 8 to 10 ft. .WED NIGHT...E winds 20 to 25 kt. Seas 9 to 11 ft. .THU...E winds 20 to 25 kt. Seas 9 to 11 ft. .THU NIGHT...E winds 15 to 20 kt. Seas 8 to 10 ft. .FRI...E winds 15 to 20 kt. Seas 7 to 9 ft. .FRI NIGHT...E winds 10 to 20 kt. Seas 7 to 8 ft. .SAT...SE winds 10 to 15 kt. Seas 6 to 7 ft. .SAT NIGHT...SE winds 10 to 15 kt. Seas 5 to 7 ft.