000 FZNT31 KNHC 051953 OFFN20 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 353 PM EDT Sat May 5 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 tight gradient between strong central Atlantic high pressure and a surface trough along 80W is providing for strong E to SE winds over the eastern half of the central Caribbean as well as over the western half of the eastern Caribbean. These winds will gradually diminish to fresh winds and become more E in direction Sun through Tue as the trough pulls off to the west- northwest while weakening and as the strong Atlantic high pressure weakens some. The combination of a large upper low over central Cuba, that is slowly moving south, and plenty of moisture and instability to its southeast will continue to bring scattered to numerous showers and thunderstorms over the eastern section of the central Caribbean through Mon. Scattered showers and isolated thunderstorms over much of the eastern are expected to continue through Tue. NW Caribbean W of 85W .TONIGHT...NE winds less than 10 kt. Seas 3 to 4 ft. .SUN...N winds less than 10 kt. Seas 3 ft. .SUN NIGHT...NE winds 10 to 15 kt. Seas 3 ft. .MON...N winds less than 10 kt. Seas 3 ft. .MON NIGHT...N winds 10 to 15 kt. Seas 3 to 4 ft. .TUE...N winds less than 10 kt. Seas 2 to 3 ft. .TUE NIGHT...NE winds less than 10 kt. Seas 2 to 3 ft. .WED...NE winds less than 10 kt. Seas 2 to 3 ft. .WED NIGHT...E winds less than 10 kt. Seas 2 to 3 ft. .THU...E winds less than 10 kt. Seas 2 to 3 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. Caribbean N of 15N between 72W and 85W .TONIGHT...S of 18N, E winds 10 to 20 kt. Elsewhere, E winds 10 to 15 kt. Seas 4 to 6 ft. .SUN...E winds 10 to 20 kt S of 18N, and SW less than 10 kt elsewhere. Seas 4 to 6 ft. .SUN NIGHT...S of 18N, E winds 10 to 20 kt. Elsewhere, S winds 10 to 15 kt, shifting to E after midnight. Seas 4 to 6 ft. .MON...E winds 10 to 20 kt S of 18N, and S less than 10 kt elsewhere. Seas 4 to 6 ft. .MON NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .TUE...E winds 10 to 15 kt. Seas 3 to 5 ft. .TUE NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. .WED...E winds 10 to 15 kt. Seas 3 to 5 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. Caribbean from 11N to 15N W of 72W .TONIGHT...Within 90 nm of coast of Colombia, E winds 10 to 20 kt. Elsewhere, E winds 10 to 15 kt. Seas 5 to 7 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 20 kt. Seas 5 to 7 ft. .MON NIGHT...NE winds 10 to 20 kt. Seas 5 to 7 ft. .TUE...E winds 10 to 20 kt. Seas 5 to 7 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. .THU...E winds 10 to 20 kt. Seas 4 to 6 ft. .THU NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. SW Caribbean S of 11N .TONIGHT...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. Seas 3 to 4 ft. .SUN NIGHT...Variable winds less than 10 kt, becoming N less than 10 kt after midnight. Seas 3 to 4 ft. .MON...Variable winds less than 10 kt. Seas 3 to 4 ft. .MON NIGHT...N winds less than 10 kt. Seas 3 to 4 ft. .TUE...Variable winds less than 10 kt. Seas 3 to 4 ft. .TUE NIGHT...N winds less than 10 kt. Seas 3 to 4 ft. .WED...Variable winds less than 10 kt. Seas 3 to 4 ft. .WED NIGHT...Variable winds less than 10 kt. Seas 3 to 4 ft. .THU...Variable winds less than 10 kt. Seas 3 to 4 ft. .THU NIGHT...Variable winds less than 10 kt. Seas 3 to 4 ft. Caribbean between 64W and 72W .TONIGHT...E winds 10 to 20 kt. Seas 3 to 4 ft Gulf of Venezuela, and 6 to 8 ft elsewhere. .SUN...E winds 10 to 20 kt. Seas 3 to 4 ft Gulf of Venezuela, and 6 to 8 ft elsewhere. .SUN NIGHT...E winds 10 to 20 kt. Seas 3 to 4 ft Gulf of Venezuela, and 6 to 8 ft elsewhere. .MON...E winds 10 to 20 kt. Seas 3 to 4 ft Gulf of Venezuela, and 5 to 7 ft elsewhere. .MON NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. .TUE...E winds 10 to 20 kt. Seas 5 to 6 ft. .TUE NIGHT...E winds 10 to 15 kt. Seas 5 to 6 ft. .WED...E winds 10 to 20 kt. Seas 5 to 6 ft. .WED NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .THU...E winds 10 to 20 kt. Seas 5 to 6 ft. .THU 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 .TONIGHT...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 6 to 8 ft. .MON...E winds 10 to 20 kt. Seas 6 to 8 ft. .MON NIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft. .TUE...E winds 10 to 20 kt. Seas 6 to 8 ft. .TUE NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. .WED...E winds 10 to 20 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. Offshore Windward Islands and adjacent ATLC waters from 07N to 15N W of 55W .TONIGHT...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 6 to 8 ft. .MON...E winds 10 to 20 kt. Seas 6 to 8 ft. .MON NIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft. .TUE...E winds 10 to 20 kt. Seas 5 to 7 ft. .TUE NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. .WED...E winds 10 to 20 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 5 to 7 ft. .THU NIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft. SYNOPSIS FOR THE SW N ATLC INCLUDING THE BAHAMAS .SYNOPSIS...A surface trough axis extends from central Cuba near 22N80W N to along the Florida coast up to northern Palm Beach, then NNE to near 30N79W. The trough will continue inland across the Florida peninsula this evening, and through Sun. Scattered to numerous showers and thunderstorms along with fresh to strong winds and seas to 10 ft are expected mainly to the east of the trough, while scattered showers and isolated thunderstorms will precede the trough. A weak cold front will enter the waters N of the Bahamas Sun evening and merge with the northern portion of the surface trough. The front will slow down as it reaches from near 31N78W to western Cuba Mon afternoon, then become stationary from near 31N75W to west-central Cuba late Mon night through Thu as it weakens. Weak low pres is expected to track northeastward along the front Mon through Tue. Fresh to strong southerly winds will precede the front over the waters north and northeast of the Bahamas through Mon night, then diminish to fresh winds late Mon night. The front will begin to slowly slowly dissipate through Thu as high pressure ridging begins to build westward along 31N. ATLC waters from 27N to 31N W of 77W .TONIGHT...S winds 10 to 20 kt. Seas 6 to 8 ft. .SUN...S winds 10 to 20 kt. Seas 5 to 7 ft. .SUN NIGHT...S winds 10 to 15 kt. Seas 5 to 7 ft. .MON...SW winds 10 to 15 kt. Seas 4 to 6 ft. .MON NIGHT...NW winds less than 10 kt, shifting to NE after midnight. Seas 4 to 6 ft. .TUE...NE winds less than 10 kt. Seas 4 to 6 ft. .TUE NIGHT...NE winds 10 to 15 kt. Seas 5 to 7 ft. .WED...NE winds 10 to 15 kt. Seas 5 to 7 ft. .WED NIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. .THU...NE winds 10 kt. Seas 4 to 6 ft. .THU NIGHT...E winds less than 10 kt. Seas 4 to 5 ft. ATLC WATERS FROM 27N TO 31N BETWEEN 65W AND 77W .TONIGHT...SE winds 15 to 20 kt W of 70W, and SE 10 to 15 kt elsewhere. Seas 6 to 8 ft. .SUN...SE winds 10 to 20 kt. Seas 6 to 8 ft. .SUN NIGHT...S winds 10 to 20 kt. Seas 6 to 8 ft. .MON...S winds 10 to 20 kt. Seas 6 to 8 ft. .MON NIGHT...S winds 10 to 15 kt. Seas 6 to 8 ft. .TUE...S winds 10 to 15 kt. Seas 5 to 7 ft. .TUE NIGHT...SE winds 10 to 15 kt. Seas 5 to 7 ft. .WED...SE winds 10 to 15 kt. Seas 5 to 6 ft. .WED NIGHT...SE winds 10 to 15 kt. Seas 5 to 6 ft. .THU...S winds less than 10 kt. Seas 5 to 6 ft. .THU NIGHT...S winds less than 10 kt. Seas 4 to 5 ft. Bahamas N of 22N .TONIGHT...SE winds 10 to 20 kt. Seas 4 to 6 ft. .SUN...SE winds 10 to 15 kt. Seas 4 to 6 ft. .SUN NIGHT...S winds 10 to 15 kt. Seas 3 to 5 ft. .MON...S winds 10 to 15 kt. Seas 3 to 5 ft. .MON NIGHT...S winds 10 to 15 kt. Seas 3 to 5 ft. .TUE...S winds less than 10 kt. Seas 3 to 4 ft. .TUE NIGHT...SE winds 10 to 15 kt. Seas 3 to 4 ft. .WED...SE winds 10 to 15 kt. Seas 3 to 4 ft. .WED NIGHT...E winds less than 10 kt. Seas 2 to 3 ft. .THU...SE winds less than 10 kt. Seas 2 to 3 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. ATLC waters from 22N to 27N between 65W and the Bahamas .TONIGHT...SE winds 15 to 20 kt. Seas 7 to 9 ft. .SUN...SE winds 15 to 20 kt. Seas 7 to 9 ft. .SUN NIGHT...SE winds 15 to 20 kt. Seas 7 to 9 ft. .MON...SE winds 15 to 20 kt. Seas 6 to 8 ft. .MON NIGHT...SE winds 10 to 15 kt. Seas 6 to 7 ft. .TUE...SE winds 10 to 20 kt. Seas 6 to 7 ft. .TUE NIGHT...SE winds 10 to 15 kt. Seas 6 to 7 ft. .WED...SE winds 10 to 15 kt. Seas 6 to 7 ft. .WED NIGHT...SE winds 10 to 15 kt. Seas 5 to 6 ft. .THU...SE winds 10 to 15 kt. Seas 5 to 6 ft. .THU NIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft. ATLC waters S of 22N W of 65W .TONIGHT...SE winds 10 to 20 kt. Seas 6 to 8 ft. .SUN...E winds 10 to 20 kt. Seas 6 to 8 ft. .SUN NIGHT...SE winds 10 to 20 kt. Seas 5 to 7 ft. .MON...SE winds 10 to 20 kt. Seas 5 to 7 ft. .MON NIGHT...SE winds 10 to 20 kt. Seas 4 to 6 ft. .TUE...SE winds 10 to 20 kt. Seas 4 to 6 ft. .TUE NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. .WED...SE winds 10 to 20 kt. Seas 4 to 6 ft. .WED NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. .THU...E winds 10 to 20 kt. Seas 4 to 6 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. ATLC waters from 19N to 22N between 55W and 65W .TONIGHT...E winds 15 to 20 kt. Seas 6 to 8 ft. .SUN...E winds 15 to 20 kt. Seas 6 to 8 ft. .SUN NIGHT...E winds 15 to 20 kt. Seas 7 ft. .MON...E winds 15 to 20 kt. Seas 7 to 8 ft. .MON NIGHT...E winds 15 to 20 kt. Seas 7 to 8 ft. .TUE...E winds 15 to 20 kt. Seas 7 to 8 ft. .TUE NIGHT...E winds 15 kt. Seas 6 to 7 ft. .WED...E winds 15 kt. Seas 6 to 7 ft. .WED NIGHT...E winds 10 to 15 kt. Seas 6 to 7 ft. .THU...E winds 10 to 15 kt. Seas 5 to 6 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 5 to 6 ft.