000 FZNT31 KNHC 190924 OFFN20 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 524 AM EDT Mon Mar 19 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. A weakening cold front will pass through the Yucatan Basin late Tue night. The pressure gradient will tighten ahead of the front, allowing fresh to strong E to SE winds off the central coast of Honduras by Mon night. 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 www.nadma.gd for additional information. NW Caribbean W of 85W .TODAY...SE winds 10 to 15 kt. Seas 3 to 5 ft. .TONIGHT...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...SE winds 10 to 15 kt. Seas 3 to 5 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 3 to 5 ft. .THU...NE winds 10 to 20 kt. Seas 4 to 6 ft. .THU NIGHT...NE winds 10 to 20 kt. Seas 5 to 7 ft. .FRI...NE winds 10 to 20 kt. Seas 6 to 8 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. Caribbean N of 15N between 72W and 85W .TODAY...S of 18N, E winds less than 10 kt, increasing to 10 to 15 kt in the afternoon. Elsewhere, SE winds less than 10 kt. Seas 3 ft. .TONIGHT...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. .TUE...S of 18N, E winds 10 to 15 kt. Elsewhere, SE winds less than 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 3 to 5 ft S of 18N, and 2 ft or less elsewhere. .TUE NIGHT...S of 18N, E winds 10 to 15 kt. Elsewhere, S winds 10 to 15 kt, diminishing to less than 10 kt after midnight. Seas 4 to 6 ft S of 18N, and 2 ft or less elsewhere. .WED...E 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. .FRI...NE winds 10 to 20 kt. Seas 5 to 7 ft. .FRI NIGHT...NE winds 10 to 20 kt. Seas 5 to 7 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 15 kt elsewhere. Seas 5 to 7 ft. .TONIGHT...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. .TUE...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. .TUE NIGHT...E winds 20 to 25 kt within 90 nm of coast of Colombia, and E 10 to 20 kt elsewhere. Within 90 nm of coast of Colombia, seas 6 to 7 ft, building to 7 to 10 ft after midnight. Elsewhere, seas 5 to 7 ft. .WED...E winds 10 to 20 kt. Seas 6 to 8 ft. .WED NIGHT...NE winds 10 to 20 kt. Seas 6 to 9 ft. .THU...NE winds 10 to 20 kt. Seas 6 to 9 ft. .THU NIGHT...NE winds 10 to 20 kt. Seas 6 to 9 ft. .FRI...NE winds 10 to 20 kt. Seas 6 to 9 ft. .FRI NIGHT...NE winds 10 to 20 kt. Seas 6 to 9 ft. SW Caribbean S of 11N .TODAY...NE winds 10 to 15 kt. Seas 5 to 7 ft. .TONIGHT...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 4 to 6 ft. .WED...NE winds 10 to 15 kt. Seas 5 to 7 ft. .WED NIGHT...NE winds 10 to 20 kt. Seas 5 to 7 ft. .THU...NE winds 10 to 20 kt. Seas 6 to 9 ft. .THU NIGHT...N winds 10 to 20 kt. Seas 6 to 9 ft. .FRI...NE winds 10 to 20 kt. Seas 6 to 9 ft. .FRI NIGHT...NE winds 15 to 25 kt. Seas 7 to 10 ft. Caribbean between 64W and 72W .TODAY...E winds 15 to 20 kt Gulf of Venezuela, and E 10 to 15 kt elsewhere. Seas 3 to 5 ft. .TONIGHT...E winds 15 to 25 kt Gulf of Venezuela, and E 10 to 15 kt elsewhere. Seas 3 to 5 ft. .TUE...E winds 10 to 20 kt. Seas 4 to 6 ft. .TUE NIGHT...E winds 20 to 25 kt Gulf of Venezuela, and E 10 to 20 kt elsewhere. 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 4 to 6 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 4 to 6 ft. Offshore Leeward Islands and adjacent ATLC waters from 15N to 19N W of 55W .TODAY...SE winds less than 10 kt. Seas 4 to 6 ft. .TONIGHT...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 15 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 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 15 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 4 to 6 ft. .TONIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .TUE...E winds 10 to 15 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 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 9 ft. .FRI...E winds 10 to 15 kt. Seas 6 to 8 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. SYNOPSIS FOR THE SW N ATLC INCLUDING THE BAHAMAS .SYNOPSIS...A cold front accompanied by fresh to strong winds and 8 to 10 ft seas will move east across the waters N of 28N and E of 70W through early Mon. Southerly flow will increase off NE Florida Mon night and Tue ahead of a stronger cold front moving into the region late Tue. Winds will reach gale force north of 28N Tue night through Wed night as the front moves east. Winds and seas will diminish Thu as the front reaches from Bermuda to the Windward Passage, before stalling and weakening through late week. A weaker front will move eastward north of 28N Thu night into Fri. ATLC waters from 27N to 31N W of 77W ...GALE CONDITIONS POSSIBLE... .TODAY...S winds less than 10 kt, shifting to SW in the afternoon. Seas 3 to 4 ft. .TONIGHT...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 to W winds 25 to 35 kt. Seas 10 to 12 ft in SW swell, building to 12 to 16 ft late. .WED...W winds 20 to 30 kt. Seas 9 to 14 ft. .WED NIGHT...NW winds 20 to 30 kt. Seas 8 to 13 ft. .THU...NW winds 15 to 25 kt. Seas 8 to 11 ft. .THU NIGHT...NW winds 10 to 20 kt. Seas 6 to 9 ft. .FRI...N winds 10 to 20 kt. Seas 5 to 7 ft. .FRI NIGHT...NE winds less than 10 kt. Seas 5 to 7 ft. ATLC WATERS FROM 27N TO 31N BETWEEN 65W AND 77W ...GALE CONDITIONS POSSIBLE... .TODAY...W of 70W, N winds less than 10 kt, shifting to SE in the afternoon. Elsewhere, NW winds 10 to 15 kt, shifting to N in the afternoon. Seas 5 to 7 ft. .TONIGHT...S winds 10 to 15 kt W of 70W, and Variable less than 10 kt elsewhere. Seas 4 to 6 ft. .TUE...W of 70W, SW winds 10 to 20 kt. Elsewhere, S winds less than 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 4 to 6 ft. .TUE NIGHT...SW winds 25 to 35 kt N of 29N, and S to SW 20 to 30 kt elsewhere. Seas 9 to 11 ft, building to 12 to 16 ft late. .WED...N of 30N W winds 30 to 35 kt. Seas 12 to 14 ft. S of 30N SW to W winds 20 to 30 kt. Seas 9 to 12 ft. .WED NIGHT...W winds 20 to 30 kt. Seas 10 to 15 ft. .THU...W winds 15 to 25 kt. Seas 10 to 15 ft. .THU NIGHT...NW winds 10 to 20 kt. Seas 8 to 13 ft. .FRI...NW winds 10 to 20 kt. Seas 8 to 11 ft. .FRI NIGHT...NW winds 10 to 15 kt. Seas 6 to 9 ft. Bahamas N of 22N .TODAY...Variable winds less than 10 kt, becoming S less than 10 kt in the afternoon. Seas 2 ft or less. .TONIGHT...SE winds less than 10 kt. Seas 2 ft or less. .TUE...S winds 10 to 15 kt. Seas 2 ft or less. .TUE NIGHT...S winds 10 to 15 kt. Seas 3 ft. .WED...W winds 10 to 20 kt. Seas 3 to 4 ft. .WED NIGHT...NW winds 10 to 15 kt. Seas 3 to 5 ft. .THU...N winds 10 to 15 kt. Seas 3 to 5 ft. .THU NIGHT...N winds 10 to 15 kt. Seas 3 to 5 ft. .FRI...N winds 10 to 15 kt. Seas 3 to 5 ft. .FRI NIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft. ATLC waters from 22N to 27N between 65W and the Bahamas .TODAY...NW winds less than 10 kt in the morning, becoming variable winds less than 10 kt. Seas 3 to 5 ft. .TONIGHT...Variable winds less than 10 kt, becoming S less than 10 kt after midnight. Seas 3 to 5 ft. .TUE...S winds less than 10 kt, increasing to 10 to 15 kt in the afternoon. 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 20 kt. Seas 6 to 8 ft. .THU...W winds 10 to 15 kt. Seas 6 to 8 ft. .THU NIGHT...NW winds 10 to 15 kt. Seas 6 to 9 ft. .FRI...N winds 10 to 15 kt. Seas 6 to 8 ft. .FRI NIGHT...N winds 10 to 15 kt. Seas 6 to 8 ft. ATLC waters S of 22N W of 65W .TODAY...Variable winds less than 10 kt. Seas 3 to 4 ft. .TONIGHT...E winds less than 10 kt. Seas 3 to 4 ft. .TUE...SE winds less than 10 kt. Seas 3 to 4 ft. .TUE NIGHT...SE winds 10 to 15 kt. Seas 3 ft. .WED...SE winds 10 to 15 kt. Seas 3 to 4 ft. .WED NIGHT...E winds 10 to 15 kt, diminishing to less than 10 kt after midnight. Seas 3 to 4 ft. .THU...E winds less than 10 kt. Seas 3 to 4 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .FRI...NE winds 10 to 15 kt. Seas 5 to 7 ft. .FRI NIGHT...NE winds 10 to 20 kt. Seas 5 to 7 ft. ATLC waters from 19N to 22N between 55W and 65W .TODAY...Variable winds less than 10 kt, becoming S less than 10 kt in the afternoon. Seas 5 to 7 ft. .TONIGHT...Variable winds less than 10 kt. Seas 4 to 6 ft. .TUE...SE winds less than 10 kt. Seas 4 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. .FRI...SE winds 10 to 15 kt. Seas 6 to 7 ft. .FRI NIGHT...SE winds 10 to 15 kt, diminishing to less than 10 kt after midnight. Seas 7 to 8 ft.