000 FZNT31 KNHC 180227 OFFN20 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 1027 PM EDT Sat Mar 17 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...High pressure north of the region will support fresh to locally strong trades across the south central Caribbean the next several days, except increasing to near gale force along the northwest coast of Colombia during the overnight hours. A weakening cold front will pass through the Yucatan Basin late Tue night. High pressure will build behind the front. Undersea volcano Kick em Jenny, north of Grenada near 12.18N 61.38W, is in a state of unrest. The government of Grenada advises mariners to observe a 5 km or 3.1 nm exclusion zone around Kick em Jenny. Please see the web address nadma.gd for additional information. NW Caribbean W of 85W .OVERNIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft. .SUN...SE winds 10 to 15 kt. Seas 3 to 5 ft. .SUN NIGHT...SE winds 10 to 20 kt. Seas 3 to 5 ft. .MON...SE winds 10 to 20 kt. Seas 3 to 5 ft. .MON NIGHT...SE winds 10 to 20 kt. Seas 4 to 6 ft. .TUE...SE winds 10 to 20 kt. Seas 5 to 7 ft. .TUE NIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft. .WED...E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 3 to 5 ft. .WED NIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. .THU...NE winds 10 to 15 kt. Seas 4 to 6 ft. .THU NIGHT...NE winds 10 to 20 kt. Seas 5 to 7 ft. Caribbean N of 15N between 72W and 85W .OVERNIGHT...E winds 10 to 15 kt S of 18N, and E less than 10 kt elsewhere. Seas 3 to 5 ft. .SUN...E winds 10 to 15 kt S of 18N, and E less than 10 kt elsewhere. Seas 3 to 5 ft. .SUN NIGHT...S of 18N, E winds less than 10 kt, increasing to 10 to 15 kt after midnight,Seas 3 to 5 ft. Elsewhere, E winds less than 10 kt,Seas 3 ft in the evening, subsiding to 2 ft or less. .MON...E winds 10 to 15 kt S of 18N, and SE less than 10 kt elsewhere. Seas 3 to 5 ft S of 18N, and 2 ft or less elsewhere. .MON NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. .TUE...SE winds 10 to 15 kt. Seas 3 to 5 ft. .TUE NIGHT...SE winds 10 to 15 kt. Seas 3 to 5 ft. .WED...SE winds 10 to 15 kt. Seas 3 to 5 ft. .WED NIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft. .THU...NE winds 10 to 15 kt. Seas 3 to 5 ft. .THU NIGHT...NE winds 10 to 20 kt. Seas 4 to 6 ft. Caribbean from 11N to 15N W of 72W .OVERNIGHT...E winds 20 to 25 kt within 90 nm of coast of Colombia, and NE 10 to 20 kt elsewhere. Seas 6 to 8 ft. .SUN...E winds 15 to 25 kt within 90 nm of coast of Colombia, and NE 10 to 20 kt elsewhere. Seas 6 to 9 ft. .SUN NIGHT...NE winds 15 to 25 kt within 90 nm of coast of Colombia, and NE 10 to 20 kt elsewhere. Seas 5 to 7 ft. .MON...E winds 15 to 25 kt within 90 nm of coast of Colombia, and E 10 to 20 kt elsewhere. Seas 5 to 7 ft. .MON NIGHT...E 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 20 kt. Seas 6 to 8 ft. .WED...E winds 10 to 20 kt. Seas 6 to 8 ft. .WED NIGHT...NE winds 10 to 20 kt. Seas 6 to 8 ft. .THU...NE winds 10 to 20 kt. Seas 6 to 9 ft. .THU NIGHT...NE winds 10 to 20 kt. Seas 6 to 8 ft. SW Caribbean S of 11N .OVERNIGHT...NE winds 10 to 20 kt. Seas 6 to 8 ft. .SUN...NE winds 10 to 15 kt. Seas 6 to 9 ft. .SUN NIGHT...NE winds 10 to 15 kt. Seas 5 to 7 ft. .MON...NE winds 10 to 15 kt. Seas 5 to 7 ft. .MON NIGHT...NE winds 10 to 15 kt. Seas 5 to 7 ft. .TUE...NE winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 5 to 7 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 5 to 7 ft. .THU...N winds 10 to 20 kt. Seas 6 to 8 ft. .THU NIGHT...N winds 10 to 20 kt. Seas 6 to 8 ft. Caribbean between 64W and 72W .OVERNIGHT...E winds 15 to 25 kt Gulf of Venezuela, and E 10 to 20 kt elsewhere. Seas 4 to 6 ft. .SUN...E winds 15 to 20 kt Gulf of Venezuela, and E 10 to 20 kt elsewhere. Seas 4 to 6 ft. .SUN NIGHT...E winds 15 to 20 kt Gulf of Venezuela, and E 10 to 15 kt elsewhere. Seas 3 to 5 ft. .MON...E winds 15 to 20 kt Gulf of Venezuela, and E 10 to 15 kt elsewhere. Seas 3 to 5 ft. .MON NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft. .TUE...E winds 10 to 20 kt. Seas 4 to 6 ft. .TUE NIGHT...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...E winds 10 to 20 kt. Seas 4 to 6 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. Offshore Leeward Islands and adjacent ATLC waters from 15N to 19N W of 55W .OVERNIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. .SUN...E winds less than 10 kt. Seas 5 to 7 ft. .SUN NIGHT...E winds less than 10 kt. Seas 5 to 7 ft. .MON...SE winds less than 10 kt. Seas 5 to 7 ft. .MON NIGHT...E winds less than 10 kt. Seas 4 to 6 ft. .TUE...E winds 10 to 15 kt. Seas 4 to 6 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 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 5 to 7 ft. Offshore Windward Islands and adjacent ATLC waters from 07N to 15N W of 55W .OVERNIGHT...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...E winds 10 to 15 kt. Seas 5 to 7 ft. .MON...E winds 10 to 15 kt. Seas 5 to 7 ft. .MON NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. .TUE...E winds 10 to 20 kt. Seas 5 to 7 ft. .TUE NIGHT...E winds 10 to 20 kt. Seas 6 to 8 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 9 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 6 to 8 ft. SYNOPSIS FOR THE SW N ATLC INCLUDING THE BAHAMAS .SYNOPSIS...A cold front accompanied by fresh to strong winds and 8 to 12 ft seas will move across the waters N of 28N and E of 70W through Sun. Another front will follow in the same area through Mon. Southerly winds will increase to fresh to strong off northeast Florida and north of the Bahamas late Mon, then increasing further to near gale to gale force north of 28N with building seas late Tue through Wed as low pressure moves off the Carolina coast. ATLC waters from 27N to 31N W of 77W ...GALE CONDITIONS POSSIBLE... .OVERNIGHT...SW winds 10 to 20 kt. Seas 3 to 5 ft. .SUN...W winds 10 to 20 kt. Seas 4 to 6 ft. .SUN NIGHT...NW winds 10 to 15 kt, shifting to S after midnight. Seas 3 to 5 ft. .MON...S winds less than 10 kt, shifting to SW in the afternoon. Seas 3 to 4 ft. .MON NIGHT...SW winds 10 to 20 kt. Seas 3 to 5 ft. .TUE...SW winds 15 to 25 kt. Seas 5 to 7 ft. .TUE NIGHT...SW winds 20 to 30 kt. Seas 7 to 10 ft. .WED...W winds 20 to 30 kt. Seas 7 to 10 ft. .WED NIGHT...NW winds 20 to 30 kt. Seas 7 to 10 ft. .THU...NW winds 15 to 25 kt. Seas 7 to 10 ft. .THU NIGHT...NW winds 10 to 20 kt. Seas 6 to 9 ft. ATLC WATERS FROM 27N TO 31N BETWEEN 65W AND 77W ...GALE CONDITIONS POSSIBLE... .OVERNIGHT...SW winds 10 to 20 kt. Seas 4 to 6 ft W of 70W, and 7 to 10 ft elsewhere. .SUN...W winds 10 to 20 kt. Seas 6 to 8 ft. .SUN NIGHT...W winds 10 to 20 kt. Seas 6 to 8 ft. .MON...W of 70W, NW winds 10 to 15 kt, shifting to SW in the afternoon. Elsewhere, W winds 10 to 15 kt. Seas 5 to 7 ft. .MON NIGHT...SW winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 4 to 6 ft. .TUE...SW winds 10 to 20 kt. Seas 5 to 7 ft. .TUE NIGHT...SW winds 10 to 20 kt, increasing to 20 to 30 kt after midnight. Seas 7 to 10 ft. .WED...SW winds 20 to 30 kt. Seas 7 to 10 ft. .WED NIGHT...W winds 20 to 30 kt. Seas 8 to 13 ft. .THU...W winds 15 to 25 kt. Seas 9 to 14 ft. .THU NIGHT...W winds 10 to 20 kt. Seas 8 to 12 ft. Bahamas N of 22N .OVERNIGHT...E winds less than 10 kt. Seas 2 ft or less. .SUN...SE winds less than 10 kt in the morning, becoming variable winds less than 10 kt. Seas 2 ft or less. .SUN NIGHT...Variable winds less than 10 kt. Seas 2 ft or less. .MON...Variable winds less than 10 kt, becoming SE less than 10 kt in the afternoon. Seas 2 ft or less. .MON NIGHT...SE winds less than 10 kt. Seas 2 ft or less. .TUE...S winds 10 to 15 kt. Seas 2 ft or less, building to 3 ft in the afternoon. .TUE NIGHT...S winds 10 to 15 kt. Seas 3 ft. .WED...W winds 10 to 15 kt. Seas 3 ft. .WED NIGHT...NW winds 10 to 15 kt. Seas 3 to 4 ft. .THU...NW winds 10 to 15 kt. Seas 3 to 5 ft. .THU NIGHT...N winds 10 to 15 kt. Seas 3 to 5 ft. ATLC waters from 22N to 27N between 65W and the Bahamas .OVERNIGHT...W of 70W, SE winds less than 10 kt. Elsewhere, E winds 10 to 15 kt, diminishing to less than 10 kt after midnight. Seas 4 to 6 ft. .SUN...Variable winds less than 10 kt, becoming NW less than 10 kt in the afternoon. Seas 4 to 6 ft. .SUN NIGHT...NW winds less than 10 kt. Seas 4 to 6 ft. .MON...SW winds less than 10 kt. Seas 3 to 5 ft. .MON NIGHT...S winds less than 10 kt. Seas 3 to 5 ft. .TUE...S winds 10 to 15 kt. Seas 3 to 5 ft. .TUE NIGHT...S winds 10 to 15 kt. Seas 3 to 5 ft. .WED...S winds 10 to 20 kt. Seas 5 to 7 ft. .WED NIGHT...SW winds 10 to 15 kt. Seas 5 to 7 ft. .THU...SW winds 10 to 15 kt. Seas 5 to 7 ft. .THU NIGHT...W winds 10 to 15 kt. Seas 6 to 8 ft. ATLC waters S of 22N W of 65W .OVERNIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .SUN...E winds less than 10 kt in the morning, becoming variable winds less than 10 kt. Seas 3 to 5 ft. .SUN NIGHT...NE winds less than 10 kt. Seas 3 to 5 ft. .MON...Variable winds less than 10 kt. Seas 3 to 5 ft. .MON NIGHT...E winds less than 10 kt. Seas 3 to 5 ft. .TUE...SE 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 5 ft. .WED NIGHT...SE winds 10 to 15 kt. Seas 3 to 5 ft. .THU...SE winds 10 to 15 kt. Seas 3 to 5 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. ATLC waters from 19N to 22N between 55W and 65W .OVERNIGHT...Variable winds less than 10 kt, becoming E less than 10 kt after midnight. Seas 6 to 7 ft. .SUN...SE winds less than 10 kt. Seas 6 to 8 ft. .SUN NIGHT...Variable winds less than 10 kt. Seas 6 to 8 ft. .MON...Variable winds less than 10 kt. Seas 6 to 8 ft. .MON NIGHT...Variable winds less than 10 kt. Seas 5 to 7 ft. .TUE...SE winds less than 10 kt. Seas 5 to 6 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 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 5 to 7 ft.