000 FZNT31 KNHC 160847 OFFN20 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 447 AM EDT Wed Aug 16 2017 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 strong and broad tropical wave will move quickly through the Tropical N Atlantic waters early this morning, then across the eastern Caribbean later this morning and through Thursday afternoon, across the central Caribbean Thursday beginning late Thursday afternoon through Friday afternoon, and the western Caribbean Friday night through Saturday evening. The next tropical wave or low pressure system will move across the eastern Tropical N Atlantic waters Thursday afternoon, and the rest of the Tropical N Atlantic through Friday morning, before moving across the eastern Caribbean Friday afternoon through Saturday night and the central Caribbean Sunday and Sunday night. Fresh to strong winds, locally gusty at times, will accompany this system along with scattered to numerous showers and thunderstorms. NW Caribbean W of 85W .TODAY...E winds 10 to 15 kt. Seas 3 to 4 ft. .TONIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. .THU...E winds 10 to 15 kt. Seas 3 to 4 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. .FRI...NE winds less than 10 kt. Seas 3 to 4 ft. .FRI NIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. .SAT...E winds 10 to 15 kt, shifting to NE in the afternoon. Seas 3 to 4 ft. .SAT NIGHT...E winds less than 10 kt. Seas 2 to 3 ft. .SUN...E winds less than 10 kt. Seas 2 to 3 ft. .SUN NIGHT...E winds 10 to 15 kt. Seas 2 to 3 ft. Caribbean N of 15N between 72W and 85W .TODAY...S of 18N, E winds 10 to 20 kt. Elsewhere, E winds less than 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 5 to 7 ft S of 18N, and 3 to 4 ft elsewhere. .TONIGHT...S of 18N, E winds 10 to 20 kt. Elsewhere, E winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 5 to 7 ft S of 18N, and 3 to 5 ft elsewhere. .THU...E winds 10 to 15 kt. Seas 4 to 6 ft. .THU NIGHT...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...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 20 kt. Seas 5 to 7 ft. .SUN NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. Caribbean from 11N to 15N W of 72W .TODAY...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. .TONIGHT...NE 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 8 ft. .THU NIGHT...NE winds 10 to 20 kt within 90 nm of coast of Colombia, and NE 10 to 15 kt elsewhere. 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 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 5 to 7 ft. .SUN NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. SW Caribbean S of 11N .TODAY...E winds 10 to 15 kt, shifting to W in the afternoon. Seas 5 to 7 ft. .TONIGHT...N winds less than 10 kt, shifting to NE after midnight. Seas 5 to 7 ft. .THU...E winds 10 to 15 kt. Seas 5 to 7 ft. .THU NIGHT...N winds less than 10 kt. Seas 4 to 6 ft. .FRI...NE winds less than 10 kt, shifting to S in the afternoon. Seas 4 to 6 ft. .FRI NIGHT...Variable winds less than 10 kt. Seas 3 to 5 ft. .SAT...Variable winds less than 10 kt, becoming W less than 10 kt in the afternoon. Seas 3 to 4 ft. .SAT NIGHT...NW winds less than 10 kt in the evening, becoming variable winds less than 10 kt. Seas 3 to 4 ft. .SUN...Variable winds less than 10 kt, becoming SW less than 10 kt in the afternoon. Seas 3 to 4 ft. .SUN NIGHT...SW winds less than 10 kt. Seas 3 to 4 ft. Caribbean between 64W and 72W .TODAY...E winds 10 to 20 kt. Seas 5 to 7 ft. .TONIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. .THU...E winds 10 to 20 kt. Seas 3 to 4 ft Gulf of Venezuela, and 5 to 7 ft elsewhere. .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 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 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 20 kt. Seas 4 to 6 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 15 to 20 kt. Seas 6 to 8 ft. .THU...E winds 10 to 20 kt. Seas 6 to 8 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 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 15 kt. Seas 5 to 7 ft. .SUN...E winds 10 to 20 kt. Seas 5 to 7 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...E winds 10 to 15 kt. Seas 5 to 7 ft. .TONIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .THU...E winds 10 to 15 kt. Seas 5 to 7 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 6 to 8 ft. .FRI...SE 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 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 4 to 6 ft. SYNOPSIS FOR THE SW N ATLC INCLUDING THE BAHAMAS .SYNOPSIS...In the wake of Hurricane Gert, located well N of the area, high pressure ridging has become more established along 27N. The ridge will shift N to near 28N Thursday through Friday, to 29N on Saturday and to along 31N on Sunday. The northern portion of a tropical wave located over the far SE waters will move across the remainder of the far southern waters through Friday. Fresh to locally strong easterly winds will accompany the wave. A stronger tropical wave or low pressure system is expected to move across the same waters beginning late on Saturday, and reach the waters near the SE Bahamas on Sunday. ATLC waters from 27N to 31N W of 77W .TODAY...SW winds 10 to 15 kt. Seas 3 to 4 ft. .TONIGHT...SW winds 10 kt. Seas 2 to 3 ft. .THU...SW winds 10 kt. Seas 2 to 3 ft. .THU NIGHT...S winds 10 to 15 kt. Seas 3 ft. .FRI...S winds 10 to 15 kt. Seas 3 ft. .FRI NIGHT...S winds 10 to 15 kt. Seas 3 to 4 ft. .SAT...S winds 10 to 15 kt. Seas 3 to 4 ft. .SAT NIGHT...SE winds 10 kt. Seas 3 to 4 ft. .SUN...SE winds 10 kt. Seas 3 to 4 ft. .SUN NIGHT...SE winds 10 to 15 kt. Seas 3 to 4 ft. ATLC WATERS FROM 27N TO 31N BETWEEN 65W AND 77W .TODAY...SW winds 10 to 15 kt. Seas 4 to 6 ft. .TONIGHT...S winds 10 to 15 kt. Seas 3 to 5 ft. .THU...S winds 10 to 15 kt. Seas 3 to 4 ft. .THU NIGHT...S winds less than 10 kt. Seas 3 to 4 ft. .FRI...S winds 10 kt. Seas 3 to 4 ft. .FRI NIGHT...SE winds less than 10 kt. Seas 3 to 4 ft. .SAT...SE winds less than 10 kt. Seas 3 to 4 ft. .SAT NIGHT...SE winds less than 10 kt. Seas 3 to 4 ft. .SUN...SE winds less than 10 kt. Seas 3 to 4 ft. .SUN NIGHT...E winds less than 10 kt. Seas 3 to 5 ft. Bahamas N of 22N .TODAY...SE winds 10 to 15 kt. Seas 3 ft. .TONIGHT...E winds 10 to 15 kt. Seas 3 ft. .THU...E winds 10 to 15 kt. Seas 3 to 4 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. .FRI...E winds 10 to 15 kt. Seas 3 to 4 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. .SAT...E winds 10 to 15 kt. Seas 3 to 4 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. ATLC waters from 22N to 27N between 65W and the Bahamas .TODAY...SE winds 10 to 15 kt. Seas 3 to 5 ft. .TONIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .THU...E winds 10 to 15 kt. Seas 4 to 6 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .FRI...E 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. Seas 4 to 6 ft. .SAT NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. .SUN...E winds 10 to 20 kt. Seas 6 to 8 ft. .SUN NIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft. ATLC waters S of 22N W of 65W .TODAY...E winds 10 to 20 kt. Seas 4 to 6 ft. .TONIGHT...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 20 kt. Seas 5 to 7 ft. .FRI...E winds 10 to 20 kt. Seas 5 to 7 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 15 to 20 kt. Seas 5 to 7 ft. .SUN...E winds 10 to 20 kt. Seas 6 to 8 ft. .SUN NIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft. ATLC waters from 19N to 22N between 55W and 65W .TODAY...E winds 15 to 20 kt. Seas 6 to 8 ft. .TONIGHT...E winds 15 to 20 kt. Seas 6 to 8 ft. .THU...E winds 15 to 20 kt. Seas 6 to 8 ft. .THU NIGHT...E winds 15 to 20 kt. Seas 6 to 8 ft. .FRI...E winds 15 to 20 kt. Seas 6 to 8 ft. .FRI NIGHT...E winds 15 to 20 kt. Seas 6 to 9 ft. .SAT...E winds 10 to 20 kt. Seas 8 to 11 ft. .SAT NIGHT...E winds 10 to 20 kt. Seas 7 to 10 ft. .SUN...E winds 15 to 20 kt. Seas 7 to 9 ft. .SUN NIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft.