067 FZNT31 KNHC 181357 OFFN20 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 957 AM EDT Tue Sep 18 2018 Marine Weather HF Voice Broadcast for the Tropical N Atlantic from 07N to 22N between 55W and 64W, the SW N Atlantic S of 31N W of 65W including 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 ATLC from 07N to 19N between 55W and 64W .SYNOPSIS...A trough over the northwest Caribbean will pass west of the area through Wed. A tropical wave currently approaching Barbados will move into the eastern Caribbean tonight, the central Caribbean Thu into Fri, and pass west of the area through late Sat into Sun. Meanwhile high pressure building from the central Atlc into the central Bahamas will support moderate to fresh trade winds and building seas across the entire basin late Wed through Fri. NW Caribbean W of 85W .THIS AFTERNOON...NE winds less than 10 kt. Seas 2 ft or less. .TONIGHT...E winds less than 10 kt. Seas 2 ft or less. .WED...SE winds less than 10 kt. Seas 2 ft or less. .WED NIGHT...SE winds 10 to 15 kt. Seas 2 ft or less, building to 3 ft after midnight. .THU...E winds 10 to 15 kt. Seas 3 to 5 ft. .THU NIGHT...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 15 kt. Seas 3 to 5 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. Caribbean N of 15N between 72W and 85W .THIS AFTERNOON...SE winds 10 to 15 kt. Seas 3 to 5 ft. .TONIGHT...S of 18N, E winds 10 to 20 kt. Elsewhere, SE winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 4 to 6 ft. .WED...E winds 10 to 20 kt. Seas 5 to 7 ft S of 18N, and 3 to 4 ft elsewhere. .WED NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft S of 18N, and 3 to 5 ft elsewhere. .THU...E winds 10 to 20 kt. Seas 5 to 7 ft. .THU NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. .FRI...E winds 10 to 20 kt. Seas 5 to 7 ft. .FRI NIGHT...E winds 10 to 20 kt. Seas 4 to 6 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. Caribbean from 11N to 15N W of 72W .THIS AFTERNOON...E winds 15 to 25 kt within 90 nm of coast of Colombia, and E 10 to 20 kt elsewhere. Seas 4 to 6 ft. .TONIGHT...E winds 15 to 25 kt. Seas 6 to 9 ft within 90 nm of coast of Colombia, and 4 to 6 ft elsewhere. .WED...E winds 15 to 25 kt. Seas 7 to 9 ft within 90 nm of coast of Colombia, and 5 to 7 ft elsewhere. .WED NIGHT...E winds 15 to 25 kt within 90 nm of coast of Colombia, and E 10 to 20 kt elsewhere. Seas 6 to 9 ft. .THU...E winds 10 to 20 kt. Seas 6 to 9 ft. .THU NIGHT...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 15 to 25 kt. Seas 6 to 8 ft. .SAT...E winds 15 to 25 kt. Seas 6 to 8 ft. .SAT NIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft. SW Caribbean S of 11N .THIS AFTERNOON...N winds less than 10 kt. Seas 3 to 4 ft. .TONIGHT...N winds less than 10 kt. Seas 3 to 5 ft. .WED...NE winds less than 10 kt, shifting to SW in the afternoon. Seas 3 to 5 ft. .WED NIGHT...N winds less than 10 kt. Seas 4 to 6 ft. .THU...S winds less than 10 kt in the morning, becoming variable winds less than 10 kt. Seas 4 to 6 ft. .THU NIGHT...Variable winds less than 10 kt. Seas 4 to 6 ft. .FRI...Variable winds less than 10 kt, becoming NW less than 10 kt in the afternoon. Seas 3 to 5 ft. .FRI NIGHT...N winds less than 10 kt. Seas 4 to 6 ft. .SAT...N winds less than 10 kt. Seas 5 to 7 ft. .SAT NIGHT...N winds less than 10 kt. Seas 5 to 7 ft. Caribbean between 64W and 72W .THIS AFTERNOON...E winds 10 to 20 kt. Seas 4 to 6 ft. .TONIGHT...E winds 15 to 25 kt Gulf of Venezuela, and E 10 to 20 kt elsewhere. Seas 5 to 7 ft. .WED...E winds 10 to 20 kt. Seas 3 to 5 ft Gulf of Venezuela, and 5 to 7 ft elsewhere. .WED NIGHT...E winds 15 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 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 8 ft. .SAT...E winds 10 to 20 kt. Seas 5 to 7 ft. .SAT 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 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 6 to 9 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 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 5 ft. Offshore Windward Islands and adjacent ATLC waters from 07N to 15N W of 55W .THIS AFTERNOON...E winds 10 to 15 kt. Seas 5 to 7 ft. .TONIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. .WED...E winds 10 to 20 kt. Seas 6 to 8 ft. .WED NIGHT...E winds 10 to 20 kt. Seas 6 to 9 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 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. Synopsis for the the SW N ATLC including the Bahamas .SYNOPSIS...A surface trough reaching from roughly Bermuda to the southern Bahamas will shift slowly NW and weaken through tonight as the central Atlantic ridge builds into the central Bahamas. Low pressure moving off the Carolinas will drag an attendant frontal trough across the waters north of 27N Thu and Fri. The low will move to near 31N71W Fri evening then drift W and slowly weaken through Sat. ATLC waters from 27N to 31N W of 77W .THIS AFTERNOON...S winds 10 kt. Seas 4 to 5 ft. .TONIGHT...S winds 10 to 15 kt. Seas 4 ft. .WED...SW winds 10 to 15 kt, shifting to W in the afternoon. Seas 3 to 4 ft. .WED NIGHT...Variable winds less than 10 kt. Seas 3 to 4 ft. .THU...NE winds less than 10 kt. Seas 3 to 4 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. .FRI...NE winds 10 kt. Seas 4 to 6 ft. .FRI NIGHT...NE winds less than 10 kt. Seas 4 to 6 ft. .SAT...NE winds less than 10 kt. Seas 4 to 6 ft. .SAT NIGHT...E winds less than 10 kt in the evening, becoming variable winds less than 10 kt. Seas 5 to 6 ft. ATLC waters from 27N to 31N between 65W and 77W .THIS AFTERNOON...Variable winds less than 10 kt. Seas 4 to 5 ft. .TONIGHT...Variable winds less than 10 kt, becoming SW less than 10 kt after midnight. Seas 4 ft. .WED...SW winds 10 to 15 kt. Seas 3 to 4 ft. .WED NIGHT...SW winds 10 to 15 kt. Seas 3 to 5 ft. .THU...W winds 10 to 15 kt. Seas 4 to 6 ft. .THU NIGHT...W winds 10 to 15 kt. Seas 4 to 6 ft. .FRI...SW winds less than 10 kt. Seas 5 to 7 ft. .FRI NIGHT...SW winds less than 10 kt. Seas 5 to 7 ft. .SAT...SW winds less than 10 kt. Seas 5 to 7 ft. .SAT NIGHT...S winds less than 10 kt. Seas 5 to 6 ft. Bahamas N of 22N .THIS AFTERNOON...SE winds less than 10 kt. Seas 3 ft. .TONIGHT...SE winds 10 kt. Seas 3 ft. .WED...SE winds less than 10 kt. Seas 3 ft in the morning, subsiding to 2 ft or less. .WED NIGHT...SE winds less than 10 kt. Seas 2 ft or less. .THU...E winds less than 10 kt. Seas 2 ft or less. .THU NIGHT...E winds 10 to 15 kt. Seas 2 ft or less. .FRI...E winds 10 to 15 kt. Seas 2 ft or less, building to 3 ft in the afternoon. .FRI NIGHT...E winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 3 to 4 ft. .SAT...E winds 10 to 15 kt. Seas 3 to 4 ft. .SAT NIGHT...SE winds 10 to 15 kt. Seas 3 to 4 ft. ATLC waters from 22N to 27N between 65W and the Bahamas .THIS AFTERNOON...S winds less than 10 kt. Seas 4 to 5 ft. .TONIGHT...S winds less than 10 kt. Seas 4 ft. .WED...Variable winds less than 10 kt W of 70W, and S 10 kt elsewhere. Seas 3 to 4 ft. .WED NIGHT...W of 70W, Variable winds less than 10 kt, becoming S less than 10 kt after midnight. Elsewhere, S winds 10 kt. Seas 3 to 4 ft. .THU...SE winds less than 10 kt. Seas 3 to 4 ft. .THU NIGHT...SE winds less than 10 kt. Seas 3 to 4 ft. .FRI...SE winds less than 10 kt. Seas 3 to 5 ft. .FRI NIGHT...SE winds less than 10 kt. Seas 4 to 5 ft. .SAT...E winds less than 10 kt. Seas 5 to 6 ft. .SAT NIGHT...E winds less than 10 kt. Seas 5 to 6 ft. ATLC waters S of 22N W of 65W .THIS AFTERNOON...SE winds less than 10 kt. Seas 3 to 4 ft. .TONIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. .WED...E winds 10 to 15 kt. Seas 3 to 4 ft. .WED NIGHT...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 3 to 5 ft. .FRI NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft. .SAT...E winds 10 to 15 kt. Seas 3 to 5 ft. .SAT NIGHT...E winds 10 to 20 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 4 to 6 ft. .TONIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. .WED...E winds 10 to 15 kt. Seas 5 to 7 ft. .WED NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. .THU...E winds 10 to 15 kt. Seas 5 to 7 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .FRI...E winds 10 to 15 kt. Seas 4 to 5 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 4 to 5 ft. .SAT...E winds 10 to 15 kt. Seas 4 to 5 ft. .SAT NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft.