131 FZNT31 KNHC 131513 OFFN20 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 1113 AM EDT Wed Oct 13 2021 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 Atlantic from 07N to 19N between 55W and 64W .SYNOPSIS...A vigorous upper level trough from the Bahamas to the NW Caribbean will support active weather across the central Caribbean and extreme NE Caribbean through tonight behind two tropical waves. Northerly swell will subside across the regional Atlc and Caribbean passages through tonight. Developing low pres NE of the southern Bahamas will drift E-NE tonight through the weekend. This will weaken the pressure gradient across the Caribbean basin leading to tranquil marine conditions. NW Caribbean W of 85W .THIS AFTERNOON...Variable winds less than 10 kt. Seas 2 ft or less. .TONIGHT...E winds less than 10 kt. Seas 2 ft or less. .THU...SE winds less than 10 kt. Seas 2 ft or less. .THU NIGHT...E winds less than 10 kt. Seas 2 ft or less. .FRI...E winds less than 10 kt. Seas 2 ft or less. .FRI NIGHT...E winds less than 10 kt. Seas 2 ft or less. .SAT...E winds less than 10 kt in the morning, becoming variable winds less than 10 kt. Seas 2 ft or less. .SAT NIGHT...NE winds less than 10 kt. Seas 2 ft or less. .SUN...Variable winds less than 10 kt. Seas 2 ft or less. .SUN NIGHT...NE winds less than 10 kt. Seas 2 ft or less, building to 3 ft after midnight. Caribbean N of 15N between 72W and 85W .THIS AFTERNOON...E winds less than 10 kt. Seas 3 ft. .TONIGHT...Variable winds less than 10 kt, becoming E less than 10 kt after midnight. Seas 3 ft in the evening, subsiding to 2 ft or less. .THU...E winds less than 10 kt. Seas 2 ft or less. .THU NIGHT...Variable winds less than 10 kt. Seas 2 ft or less. .FRI...E winds less than 10 kt. Seas 2 ft or less. .FRI NIGHT...Variable winds less than 10 kt. Seas 2 ft or less. .SAT...Variable winds less than 10 kt. Seas 2 ft or less. .SAT NIGHT...Variable winds less than 10 kt. Seas 2 ft or less. .SUN...NE winds less than 10 kt. Seas 2 ft or less. .SUN NIGHT...NE winds less than 10 kt. Seas 2 ft or less. Caribbean from 11N to 15N W of 72W .THIS AFTERNOON...E winds less than 10 kt. Seas 3 to 4 ft. .TONIGHT...Variable winds less than 10 kt. Seas 3 to 4 ft. .THU...Variable winds less than 10 kt, becoming E less than 10 kt in the afternoon. Seas 2 ft or less. .THU NIGHT...Variable winds less than 10 kt. Seas 2 ft or less. .FRI...Variable winds less than 10 kt. Seas 2 ft or less. .FRI NIGHT...Variable winds less than 10 kt. Seas 2 ft or less. .SAT...Variable winds less than 10 kt. Seas 2 ft or less. .SAT NIGHT...Variable winds less than 10 kt. Seas 2 ft or less. .SUN...NE winds less than 10 kt. Seas 2 ft or less. .SUN NIGHT...NE winds less than 10 kt. Seas 2 ft or less. SW Caribbean S of 11N .THIS AFTERNOON...Variable winds less than 10 kt. Seas 2 ft or less. .TONIGHT...Variable winds less than 10 kt. Seas 2 ft or less. .THU...Variable winds less than 10 kt. Seas 2 ft or less. .THU NIGHT...Variable winds less than 10 kt. Seas 2 ft or less. .FRI...Variable winds less than 10 kt. Seas 2 ft or less. .FRI NIGHT...Variable winds less than 10 kt. Seas 2 ft or less. .SAT...Variable winds less than 10 kt. Seas 2 ft or less. .SAT NIGHT...Variable winds less than 10 kt. Seas 2 ft or less. .SUN...Variable winds less than 10 kt. Seas 2 ft or less. .SUN NIGHT...Variable winds less than 10 kt. Seas 2 ft or less. Caribbean between 64W and 72W .THIS AFTERNOON...Variable winds less than 10 kt Gulf of Venezuela, and SE 10 to 15 kt elsewhere. Seas 2 ft or less Gulf of Venezuela, and 3 to 5 ft elsewhere. .TONIGHT...Gulf of Venezuela, N winds less than 10 kt, shifting to SE after midnight. Elsewhere, E winds 10 to 15 kt. Seas 2 ft or less Gulf of Venezuela, and 3 to 5 ft elsewhere. .THU...Gulf of Venezuela, Variable winds less than 10 kt. Elsewhere, E winds 10 to 15 kt, shifting to SE in the afternoon. Seas 2 ft or less Gulf of Venezuela, and 3 to 5 ft elsewhere. .THU NIGHT...E winds less than 10 kt. Seas 2 ft or less Gulf of Venezuela, and 3 to 4 ft elsewhere. .FRI...E winds less than 10 kt. Seas 3 to 4 ft. .FRI NIGHT...E winds less than 10 kt. Seas 3 ft. .SAT...E winds less than 10 kt. Seas 3 ft. .SAT NIGHT...E winds less than 10 kt. Seas 3 ft. .SUN...E winds less than 10 kt. Seas 3 ft. .SUN NIGHT...E winds less than 10 kt. Seas 3 ft. Offshore Leeward Islands and adjacent ATLC waters from 15N to 19N W of 55W .THIS AFTERNOON...SE winds 10 to 15 kt. Seas 5 to 7 ft. .TONIGHT...SE winds 10 to 15 kt. Seas 5 to 7 ft. .THU...SE winds less than 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 5 to 7 ft. .THU NIGHT...SE winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 4 to 6 ft. .FRI...S winds 10 to 15 kt. Seas 4 to 6 ft. .FRI NIGHT...SE winds less than 10 kt. Seas 3 to 5 ft. .SAT...S winds less than 10 kt. Seas 3 to 5 ft. .SAT NIGHT...S 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. Seas 3 to 4 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 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...SE 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, diminishing to less than 10 kt in the afternoon. Seas 4 to 6 ft. .SAT NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. .SUN...E winds less than 10 kt. Seas 3 to 5 ft. .SUN NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. Synopsis for the the SW N Atlantic including the Bahamas .SYNOPSIS...1016 mb high pressure centered near 25N59W will shift slowly E and weaken through the end of the week. Developing low pres 1010 mb near 25N71W will begin to drift E-NE tonight and shift E of the area Fri. This system will continue to produce very active weather and impact the regional waters through late Thu. Northerly swell across the regional waters will subside through tonight. ATLC waters from 27N to 31N W of 77W .THIS AFTERNOON...NE winds 10 kt. Seas 4 to 5 ft. .TONIGHT...NE winds 10 kt. Seas 4 to 5 ft. .THU...NE winds 10 kt. Seas 4 to 5 ft. .THU NIGHT...NE winds 10 kt. Seas 4 to 5 ft. .FRI...NE winds 10 kt. Seas 4 to 5 ft. .FRI NIGHT...E winds less than 10 kt. Seas 3 to 4 ft. .SAT...Variable winds less than 10 kt. Seas 3 to 4 ft. .SAT NIGHT...NW winds less than 10 kt. Seas 3 to 4 ft. .SUN...N winds 10 to 20 kt. Seas 4 to 6 ft. .SUN NIGHT...NE winds 10 to 20 kt. Seas 5 to 7 ft. ATLC waters from 27N to 31N between 65W and 77W .THIS AFTERNOON...NE winds less than 10 kt. Seas 4 to 5 ft. .TONIGHT...NE winds less than 10 kt. Seas 4 to 6 ft. .THU...N winds less than 10 kt. Seas 4 to 6 ft. .THU NIGHT...N winds 10 to 15 kt W of 70W, and NW less than 10 kt elsewhere. Seas 4 to 5 ft. .FRI...N winds less than 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 4 to 5 ft. .FRI NIGHT...NE winds 10 to 15 kt. Seas 4 to 5 ft. .SAT...NE winds less than 10 kt. Seas 3 to 4 ft. .SAT NIGHT...Variable winds less than 10 kt. Seas 3 to 4 ft. .SUN...Variable winds less than 10 kt, becoming NW less than 10 kt in the afternoon. Seas 3 to 5 ft. .SUN NIGHT...N winds 10 to 20 kt. Seas 4 to 6 ft. Bahamas N of 22N .THIS AFTERNOON...NE winds less than 10 kt. Seas 3 to 4 ft. .TONIGHT...NE winds less than 10 kt. Seas 3 to 4 ft. .THU...NE winds less than 10 kt. Seas 3 ft in the morning, subsiding to 2 ft or less. .THU NIGHT...NE winds less than 10 kt. Seas 2 ft or less, building to 3 ft after midnight. .FRI...NE winds less than 10 kt. Seas 3 ft. .FRI NIGHT...NE winds less than 10 kt. Seas 3 ft. .SAT...NE winds less than 10 kt in the morning, becoming variable winds less than 10 kt. Seas 2 ft or less. .SAT NIGHT...Variable winds less than 10 kt. Seas 2 ft or less. .SUN...Variable winds less than 10 kt, becoming N less than 10 kt in the afternoon. Seas 2 ft or less. .SUN NIGHT...NE winds less than 10 kt. Seas 2 ft or less. ATLC waters from 22N to 27N between 65W and the Bahamas .THIS AFTERNOON...NE winds less than 10 kt W of 70W, and SE 10 to 15 kt elsewhere. Seas 5 to 7 ft. .TONIGHT...NE winds 10 to 15 kt. Seas 5 to 7 ft. .THU...N winds 10 to 15 kt. Seas 5 to 7 ft. .THU NIGHT...N winds 10 to 15 kt. Seas 4 to 6 ft. .FRI...N winds 10 kt. Seas 4 to 5 ft. .FRI NIGHT...N winds less than 10 kt. Seas 3 to 4 ft. .SAT...Variable winds less than 10 kt. Seas 3 to 4 ft. .SAT NIGHT...Variable winds less than 10 kt. Seas 3 to 4 ft. .SUN...Variable winds less than 10 kt. Seas 3 ft. .SUN NIGHT...Variable winds less than 10 kt. Seas 3 ft. ATLC waters S of 22N W of 65W .THIS AFTERNOON...SW winds less than 10 kt. Seas 4 to 6 ft. .TONIGHT...W winds less than 10 kt. Seas 4 to 6 ft. .THU...W winds less than 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 3 to 5 ft. .THU NIGHT...NW winds 10 to 15 kt, diminishing to less than 10 kt after midnight. Seas 3 to 5 ft. .FRI...NW winds less than 10 kt. Seas 3 to 5 ft. .FRI NIGHT...N winds less than 10 kt. Seas 3 to 4 ft. .SAT...Variable winds less than 10 kt. Seas 3 ft in the morning, subsiding to 2 ft or less. .SAT NIGHT...Variable winds less than 10 kt. Seas 2 ft or less. .SUN...Variable winds less than 10 kt. Seas 2 ft or less. .SUN NIGHT...Variable winds less than 10 kt. Seas 2 ft or less. ATLC waters from 19N to 22N between 55W and 65W .THIS AFTERNOON...SE winds 10 to 15 kt. Seas 7 to 8 ft. .TONIGHT...SE winds 10 to 15 kt. Seas 6 to 7 ft. .THU...S winds 10 to 15 kt. Seas 5 to 6 ft. .THU NIGHT...SW winds 10 to 20 kt. Seas 5 to 6 ft. .FRI...SW winds 10 to 20 kt. Seas 5 to 6 ft. .FRI NIGHT...SW winds 10 to 15 kt. Seas 4 to 6 ft. .SAT...SW winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 4 to 6 ft. .SAT NIGHT...W winds less than 10 kt. Seas 3 to 5 ft. .SUN...Variable winds less than 10 kt. Seas 3 to 5 ft. .SUN NIGHT...Variable winds less than 10 kt. Seas 3 to 4 ft.