000 FZNT31 KNHC 032057 OFFN20 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 457 PM EDT Sun Sep 3 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...Fresh nocturnal trades are expected along the NW coast of Colombia tonight and on Mon night. Building NE to E swells in association with Hurricane Irma will propagate W across the tropical waters E of Windwards today and tonight reaching the E Caribbean passages late Mon. By then, tropical storm force and greater conditions will have moved into the waters N of 15N E of 56W in association Hurricane Irma. Irma is forecast to move into the tropical waters E of the Windwards Monday. The system is forecast to reach a position near 17.3N 58.2W Tuesday afternoon, near 19.1N 63.5W Wednesday afternoon, then move west of the forecast waters near 21.2N 68.8W by Thursday afternoon. NW Caribbean W of 85W .TONIGHT...E winds 10 to 15 kt. Seas 3 ft. .MON...E winds 10 to 15 kt. Seas 3 ft. .MON NIGHT...E winds 10 to 15 kt. Seas 3 ft. .TUE...E winds less than 10 kt. Seas 2 ft or less. .TUE NIGHT...E winds 10 to 15 kt. Seas 2 ft or less. .WED...E winds less than 10 kt. Seas 2 ft or less. .WED NIGHT...E winds 10 to 15 kt. Seas 2 ft or less. .THU...E winds 10 to 15 kt. Seas 2 ft or less. .THU NIGHT...NE winds less than 10 kt. Seas 2 ft or less. .FRI...N winds less than 10 kt. Seas 2 ft or less. Caribbean N of 15N between 72W and 85W .TONIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. .MON...E winds 10 to 15 kt. Seas 3 to 4 ft. .MON NIGHT...S of 18N, E winds 10 to 15 kt. Elsewhere, E winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 3 ft in the evening, subsiding to 2 ft or less. .TUE...S of 18N, E winds 10 to 15 kt. Elsewhere, E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 2 ft or less. .TUE NIGHT...S of 18N, E winds less than 10 kt, increasing to 10 to 15 kt after midnight. Elsewhere, E winds less than 10 kt. Seas 2 ft or less. .WED...E winds 10 to 15 kt S of 18N, and SE less than 10 kt elsewhere. Seas 2 ft or less. .WED NIGHT...E winds 10 to 15 kt. Seas 2 ft or less, building to 3 ft after midnight. .THU...NE winds 10 to 15 kt. Seas 3 ft. .THU NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. .FRI...NW winds 10 to 20 kt S of 18N, and N 15 to 25 kt elsewhere. Seas 3 ft. Caribbean from 11N to 15N W of 72W .TONIGHT...E winds 10 to 20 kt. Seas 4 to 5 ft. .MON...E winds 10 to 20 kt. Seas 3 to 5 ft. .MON NIGHT...E winds 10 to 20 kt. Seas 3 to 4 ft. .TUE...E winds 10 to 15 kt. Seas 3 to 4 ft. .TUE NIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. .WED...E winds 10 to 15 kt. Seas 3 to 4 ft. .WED NIGHT...NE winds less than 10 kt. Seas 3 to 4 ft. .THU...NE winds less than 10 kt. Seas 3 to 4 ft. .THU NIGHT...N winds less than 10 kt. Seas 3 to 4 ft. .FRI...NW winds less than 10 kt. Seas 3 to 4 ft. SW Caribbean S of 11N .TONIGHT...N winds less than 10 kt, shifting to NE after midnight. Seas 3 to 5 ft. .MON...NE winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 3 to 4 ft. .MON NIGHT...N winds less than 10 kt. Seas 3 ft. .TUE...N winds less than 10 kt, shifting to W in the afternoon. Seas 3 ft. .TUE NIGHT...N winds less than 10 kt. Seas 3 ft. .WED...SE winds less than 10 kt, shifting to W in the afternoon. Seas 3 ft. .WED NIGHT...N winds less than 10 kt. Seas 3 ft. .THU...S winds less than 10 kt, shifting to NW in the afternoon. Seas 3 ft. .THU NIGHT...NW winds less than 10 kt. Seas 3 ft. .FRI...W winds less than 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 3 ft. Caribbean between 64W and 72W .TONIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft. .MON...E winds 10 to 20 kt. Seas 3 to 5 ft. .MON NIGHT...E winds 10 to 20 kt. Seas 3 to 4 ft. .TUE...E winds 10 to 15 kt. Seas 3 to 4 ft. .TUE NIGHT...NE winds 10 to 20 kt. Seas 4 to 6 ft. .WED...TROPICAL STORM CONDITIONS POSSIBLE. .WED NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. .THU...TROPICAL STORM CONDITIONS POSSIBLE. .THU NIGHT...Gulf of Venezuela, NE winds 10 kt. Elsewhere, SE winds 10 to 20 kt, increasing to 20 to 30 kt after midnight. Seas 2 ft or less Gulf of Venezuela, and 4 to 6 ft elsewhere. .FRI...Gulf of Venezuela, N winds 10 kt,Seas 3 ft in the morning, subsiding to 2 ft or less. Elsewhere, SE winds 20 to 30 kt, diminishing to 10 to 20 kt in the afternoon,Seas 3 to 5 ft. Offshore Leeward Islands and adjacent ATLC waters from 15N to 19N W of 55W ...HURRICANE WARNING... .TONIGHT...NE winds 10 to 20 kt. Seas 6 to 8 ft. .MON...TROPICAL STORM CONDITIONS EXPECTED. NE winds 15 to 25 kt, increasing to 30 to 40 kt in the afternoon. Seas 7 to 10 ft. .MON NIGHT...HURRICANE CONDITIONS EXPECTED. NE winds 65 to 75 kt, increasing to 90 to 100 kt after midnight. Seas 8 to 13 ft, building to 11 to 16 ft after midnight. .TUE...HURRICANE CONDITIONS EXPECTED. NE winds 85 to 105 kt. Seas 12 to 17 ft, building to 15 to 20 ft in the afternoon. .TUE NIGHT...HURRICANE CONDITIONS POSSIBLE. NE winds 85 to 105 kt, shifting to S after midnight. Seas 17 to 22 ft. .WED...HURRICANE CONDITIONS POSSIBLE. .WED NIGHT...HURRICANE CONDITIONS POSSIBLE. .THU...SE winds 20 to 30 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 6 to 9 ft. Offshore Windward Islands and adjacent ATLC waters from 07N to 15N W of 55W .TONIGHT...NE winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 5 to 7 ft. .MON...NE winds 15 to 25 kt. Seas 5 to 7 ft. .MON NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. N winds 15 to 25 kt. Seas 6 to 9 ft. .TUE...TROPICAL STORM CONDITIONS POSSIBLE. SW winds 20 to 30 kt. Seas 8 to 11 ft. .TUE NIGHT...S winds 15 to 25 kt. Seas 7 to 10 ft. .WED...SE winds 15 to 25 kt. Seas 6 to 9 ft. .WED NIGHT...SE 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 5 to 7 ft. .FRI...E winds 10 to 20 kt. Seas 4 to 6 ft. SYNOPSIS FOR THE SW N ATLC INCLUDING THE BAHAMAS .SYNOPSIS...A trough extending across the waters E of NE Florida will wash out on Tue as a ridge builds W to NE Florida. Building NE to E swells will propagate W across the tropical waters S of 22N today through Mon ahead of tropical storm force and greater conditions that will shift W across the tropical waters S of 21N through mid week in association with Hurricane Irma. Irma is forecast to move into the tropical waters E of the Windwards Monday. Irma is forecast to reach a position near 17.3N 58.2W Tuesday afternoon, near 19.1N 63.5W Wednesday afternoon, move near 21.2N 68.8W by Thursday afternoon, then near 23.0N 73.5W Fri afternoon. ATLC waters from 27N to 31N W of 77W .TONIGHT...E winds less than 10 kt. Seas 3 ft. .MON...E winds less than 10 kt. Seas 3 ft. .MON NIGHT...E winds 10 kt. Seas 3 to 4 ft. .TUE...SE winds less than 10 kt. Seas 3 to 4 ft. .TUE NIGHT...SE winds 10 kt. Seas 3 to 5 ft. .WED...SE winds 10 kt. Seas 4 to 5 ft. .WED NIGHT...S winds 10 kt. Seas 4 to 6 ft. .THU...S winds 10 kt. Seas 5 to 7 ft. .THU NIGHT...E winds less than 10 kt. Seas 6 to 8 ft. .FRI...NE winds 10 to 20 kt. Seas 8 to 13 ft. ATLC WATERS FROM 27N TO 31N BETWEEN 65W AND 77W .TONIGHT...E winds less than 10 kt. Seas 3 to 4 ft. .MON...E winds less than 10 kt. Seas 3 to 5 ft. .MON NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .TUE...E winds 10 to 15 kt. Seas 4 to 6 ft. .TUE NIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft. .WED...SE winds 10 to 20 kt. Seas 5 to 7 ft. .WED NIGHT...SE winds 10 to 15 kt W of 70W, and SE 10 to 20 kt elsewhere. Seas 6 to 9 ft W of 70W, and 8 to 11 ft elsewhere. .THU...SE winds 10 to 20 kt W of 70W, and E 15 to 20 kt elsewhere. Seas 8 to 11 ft. .THU NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. .FRI...E winds 20 to 30 kt W of 70W, and SE 15 to 25 kt elsewhere. Seas 10 to 15 ft W of 70W, and 8 to 12 ft elsewhere. Bahamas N of 22N .TONIGHT...NE winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 2 ft or less. .MON...E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 2 ft or less. .MON NIGHT...E winds less than 10 kt. Seas 2 ft or less. .TUE...E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 2 ft or less, building to 3 ft in the afternoon. .TUE NIGHT...E winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 3 ft. .WED...E winds 10 to 15 kt, shifting to SE in the afternoon. Seas 3 ft. .WED NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. .THU...HURRICANE CONDITIONS POSSIBLE. .THU NIGHT...HURRICANE CONDITIONS POSSIBLE. .FRI...NE winds 55 to 65 kt, becoming N 75 to 85 kt in the afternoon. Seas 12 to 17 ft. ATLC waters from 22N to 27N between 65W and the Bahamas .TONIGHT...E winds 10 kt. Seas 4 to 5 ft. .MON...E winds 10 kt. Seas 4 to 5 ft. .MON NIGHT...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 15 kt. Seas 5 to 6 ft W of 70W, and 6 to 9 ft elsewhere. .WED...TROPICAL STORM CONDITIONS POSSIBLE. .WED NIGHT...HURRICANE CONDITIONS POSSIBLE. .THU...HURRICANE CONDITIONS POSSIBLE. .THU NIGHT...HURRICANE CONDITIONS POSSIBLE. .FRI...E winds 70 to 85 kt W of 70W, and SE 25 to 35 kt elsewhere. W of 70W, seas 16 to 21 ft, building to 15 to 25 ft in the afternoon. Elsewhere, seas 11 to 16 ft, subsiding to 8 to 13 ft in the afternoon. ATLC waters S of 22N W of 65W .TONIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. .MON...E winds less than 10 kt. Seas 3 to 5 ft. .MON NIGHT...E winds 10 to 15 kt. Seas 3 to 5 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...HURRICANE CONDITIONS POSSIBLE. .WED NIGHT...HURRICANE CONDITIONS POSSIBLE. .THU...HURRICANE CONDITIONS POSSIBLE. .THU NIGHT...HURRICANE CONDITIONS POSSIBLE. .FRI...S winds 65 to 75 kt, diminishing to 30 to 40 kt in the afternoon. Seas 11 to 16 ft. ATLC waters from 19N to 22N between 55W and 65W ...TROPICAL STORM WARNING... .TONIGHT...NE winds 10 to 20 kt. Seas 6 to 9 ft. .MON...TROPICAL STORM CONDITIONS POSSIBLE. NE winds 15 to 25 kt. Seas 7 to 10 ft. .MON NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. NE winds 20 to 30 kt. Seas 8 to 13 ft. .TUE...TROPICAL STORM CONDITIONS EXPECTED. E winds 30 to 40 kt. Seas 9 to 14 ft. .TUE NIGHT...HURRICANE CONDITIONS POSSIBLE. E winds 35 to 45 kt, increasing to 45 to 55 kt after midnight. Seas 13 to 18 ft. .WED...HURRICANE CONDITIONS POSSIBLE. .WED NIGHT...HURRICANE CONDITIONS POSSIBLE. .THU...HURRICANE CONDITIONS POSSIBLE. .THU NIGHT...E winds 15 to 25 kt. Seas 7 to 10 ft. .FRI...E winds 15 to 20 kt. Seas 7 to 10 ft.