523 FZNT31 KNHC 120930 OFFN20 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 524 AM EDT Wed Sep 12 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...Tropical Storm Isaac 1000 mb centered near 14.5N 53.5W at 5 AM EDT is moving W at 13 kt. Maximum sustained winds are 50 kt with gusts to 60 kt. Isaac will move across the Lesser Antilles on Thursday, and expected to weaken through Fri night. High winds and rough seas, primarily north of the center, will accompany the tropical storm as it moves across the region. NW Caribbean W of 85W .TODAY...SE winds 10 to 15 kt. Seas 3 to 5 ft. .TONIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. .THU...E winds 10 kt. Seas 3 to 4 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. .FRI...E winds 10 to 15 kt. Seas 3 to 4 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 2 ft or less. .SAT...E winds 10 kt. Seas 2 to 3 ft. .SAT NIGHT...NE winds less than 10 kt. Seas 2 ft or less. .SUN...NE winds less than 10 kt. Seas 2 ft or less. Caribbean N of 15N between 72W and 85W .TODAY...E winds 10 to 15 kt. Seas 2 ft or less. .TONIGHT...E winds 10 to 15 kt. Seas 2 ft or less. .THU...E winds 10 to 15 kt. Seas 3 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 3 ft. .FRI...E winds 10 to 15 kt. Seas 3 ft. .FRI NIGHT...NE winds 10 to 20 kt S of 18N, and NE less than 10 kt elsewhere. Seas 3 to 5 ft S of 18N, and 2 ft or less elsewhere. .SAT...TROPICAL STORM CONDITIONS POSSIBLE. .SAT NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. .SUN...S of 18N, NE winds 20 to 30 kt, diminishing to 10 to 20 kt in the afternoon. Elsewhere, E winds 10 to 20 kt. Seas 3 to 5 ft S of 18N, and 2 ft or less elsewhere. Caribbean from 11N to 15N W of 72W .TODAY...E winds 10 to 15 kt. Seas 3 to 5 ft. .TONIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. .THU...E winds 10 to 15 kt. Seas 3 to 5 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. .FRI...E winds 10 to 15 kt. Seas 3 to 4 ft. .FRI NIGHT...N winds less than 10 kt within 90 nm of coast of Colombia, and NE 10 to 20 kt elsewhere. Seas 3 to 4 ft. .SAT...NW winds 10 to 15 kt within 90 nm of coast of Colombia, and NE 20 to 30 kt elsewhere. Seas 3 to 5 ft. .SAT NIGHT...W winds 10 to 20 kt within 90 nm of coast of Colombia, and NW 20 to 30 kt elsewhere. Seas 3 to 5 ft. .SUN...Within 90 nm of coast of Colombia, SW winds 10 to 15 kt. Elsewhere, S winds 20 to 30 kt, diminishing to 10 to 15 kt in the afternoon. Seas 3 to 5 ft. SW Caribbean S of 11N .TODAY...NE winds less than 10 kt. Seas 3 to 4 ft. .TONIGHT...E winds less than 10 kt. Seas 3 to 4 ft. .THU...E winds less than 10 kt. Seas 3 to 4 ft. .THU NIGHT...NE winds less than 10 kt. Seas 3 ft. .FRI...S winds less than 10 kt. Seas 3 ft. .FRI NIGHT...Variable winds less than 10 kt. Seas 3 ft. .SAT...Variable winds less than 10 kt. Seas 3 ft. .SAT NIGHT...Variable winds less than 10 kt. Seas 3 ft. .SUN...SW winds 10 to 15 kt. Seas 3 to 4 ft. Caribbean between 64W and 72W ...TROPICAL STORM WARNING... .TODAY...E winds 10 to 15 kt. Seas 3 to 4 ft. .TONIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft. .THU...NE winds 10 to 20 kt. Seas 3 to 5 ft. .THU NIGHT...TROPICAL STORM CONDITIONS EXPECTED. NE winds 20 to 30 kt, becoming N 30 to 40 kt after midnight. Seas 2 ft or less Gulf of Venezuela, and 4 to 6 ft elsewhere. .FRI...TROPICAL STORM CONDITIONS POSSIBLE. NW winds 30 to 40 kt. Seas 2 ft or less Gulf of Venezuela, and 5 to 7 ft elsewhere. .FRI NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. .SAT...TROPICAL STORM CONDITIONS POSSIBLE. .SAT NIGHT...NE winds 10 kt Gulf of Venezuela, and SE 15 to 25 kt elsewhere. Seas 4 to 6 ft. .SUN...SE winds 10 to 20 kt. Seas 3 to 5 ft. Offshore Leeward Islands and adjacent ATLC waters from 15N to 19N W of 55W ...TROPICAL STORM WARNING... .TODAY...TROPICAL STORM CONDITIONS. NE winds 30 to 40 kt, becoming E 40 to 50 kt in the afternoon. Seas 8 to 11 ft. .TONIGHT...TROPICAL STORM CONDITIONS EXPECTED. E winds 35 to 45 kt. Seas 8 to 13 ft. .THU...TROPICAL STORM CONDITIONS EXPECTED. E winds 30 to 40 kt. Seas 9 to 14 ft. .THU NIGHT...TROPICAL STORM CONDITIONS EXPECTED. E winds 30 to 40 kt. Seas 8 to 11 ft. .FRI...E winds 10 to 20 kt. Seas 6 to 8 ft. .FRI NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. .SAT...E winds 10 to 15 kt. Seas 4 to 6 ft. .SAT NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .SUN...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 ...TROPICAL STORM WARNING... .TODAY...TROPICAL STORM CONDITIONS. NE winds 30 to 40 kt, becoming SE 40 to 50 kt in the afternoon. Seas 6 to 8 ft. .TONIGHT...TROPICAL STORM CONDITIONS EXPECTED. E winds 35 to 45 kt. Seas 6 to 9 ft. .THU...TROPICAL STORM CONDITIONS POSSIBLE. SE winds 30 to 40 kt. Seas 6 to 8 ft. .THU NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. SE winds 25 to 35 kt. Seas 5 to 7 ft. .FRI...E winds 10 to 20 kt. Seas 5 to 7 ft. .FRI NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. .SAT...E winds 10 to 15 kt. Seas 4 to 6 ft. .SAT NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .SUN...E winds 10 to 20 kt. Seas 4 to 6 ft. Synopsis for the the SW N ATLC including the Bahamas .SYNOPSIS....Hurricane Florence 946 mb is centered near 29.0N 70.1W at 5 AM EDT, moving WNW at 15 kt. Maximum sustained winds are 115 kt with gusts to 140 kt. Florence will move NW between the Bahamas and Bermuda through tonight, then move north of the area Thu morning. Outside of the path of Florence, large swell generated by the hurricane will affect the Bahamas and Florida. ATLC waters from 27N to 31N W of 77W .TODAY...NE winds 10 to 15 kt. Seas 5 to 7 ft, building to 7 to 10 ft in the afternoon. .TONIGHT...TROPICAL STORM CONDITIONS POSSIBLE. N winds 10 to 20 kt. Seas 9 to 14 ft. .THU...TROPICAL STORM CONDITIONS POSSIBLE. NW winds 10 to 20 kt. Seas 8 to 13 ft. .THU NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. SW winds 10 to 20 kt. Seas 7 to 10 ft. .FRI...TROPICAL STORM CONDITIONS POSSIBLE. SW winds 10 to 20 kt. Seas 5 to 7 ft. .FRI NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. .SAT...TROPICAL STORM CONDITIONS POSSIBLE. .SAT NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. .SUN...TROPICAL STORM CONDITIONS POSSIBLE. ATLC waters from 27N to 31N between 65W and 77W ...HURRICANE WARNING... .TODAY...HURRICANE CONDITIONS. W of 70W, NW winds 85 to 105 kt. Seas 16 to 26 ft in the afternoon. Elsewhere, SE winds 80 to 100 kt, diminishing to 35 to 45 kt late. Seas 12 to 21 ft. .TONIGHT...HURRICANE CONDITIONS EXPECTED. W of 70W, W winds 85 to 105 kt, becoming SW 55 to 65 kt after midnight. Seas 14 to 19 ft, subsiding to 11 to 16 ft late. Elsewhere, SE winds 15 to 25 kt. Seas 7 to 13 ft. .THU...TROPICAL STORM CONDITIONS POSSIBLE. W of 70W, SW winds 25 to 35 kt, becoming S 15 to 25 kt late. Seas 7 to 13 ft. Elsewhere, SE winds 10 to 20 kt. Seas 6 to 9 ft. .THU NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. S winds 15 to 25 kt W of 70W, and SE 10 to 15 kt elsewhere. Seas 7 to 10 ft W of 70W, and 6 to 7 ft elsewhere. .FRI...TROPICAL STORM CONDITIONS POSSIBLE. S winds 15 to 25 kt W of 70W, and E 10 kt elsewhere. Seas 6 to 8 ft. .FRI NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. .SAT...TROPICAL STORM CONDITIONS POSSIBLE. .SAT NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. .SUN...S winds 15 to 25 kt W of 70W, and SE 10 kt elsewhere. Seas 6 to 8 ft. Bahamas N of 22N .TODAY...E winds less than 10 kt. Seas 3 to 5 ft. .TONIGHT...E winds less than 10 kt. Seas 3 to 5 ft. .THU...SE winds less than 10 kt. Seas 3 to 4 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. .FRI...E winds 10 to 15 kt. Seas 3 to 5 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. .SAT...E winds 10 to 15 kt. Seas 3 to 5 ft. .SAT NIGHT...SE winds 10 to 15 kt. Seas 3 to 5 ft. .SUN...SE winds 10 to 15 kt. Seas 3 to 4 ft. ATLC waters from 22N to 27N between 65W and the Bahamas .TODAY...SW winds 10 to 20 kt W of 70W, and S 15 to 25 kt elsewhere. Seas 6 to 9 ft. .TONIGHT...SE winds 10 to 15 kt. Seas 6 to 8 ft. .THU...SE winds 10 to 15 kt. Seas 5 to 7 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 6 to 8 ft. .FRI...E winds 10 to 15 kt. Seas 6 to 8 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 6 to 8 ft. .SAT...SE winds 10 to 15 kt. Seas 6 to 8 ft. .SAT NIGHT...SE winds 10 to 15 kt. Seas 6 to 7 ft. .SUN...SE winds 10 to 15 kt. Seas 5 to 6 ft. ATLC waters S of 22N W of 65W .TODAY...E winds 10 to 15 kt. Seas 3 to 5 ft. .TONIGHT...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. .FRI...E winds 10 to 20 kt. Seas 6 to 8 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. .SAT...E winds 10 to 15 kt. Seas 5 to 7 ft. .SAT NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .SUN...SE winds 10 to 20 kt. Seas 4 to 6 ft. ATLC waters from 19N to 22N between 55W and 65W .TODAY...E winds 10 to 20 kt. Seas 6 to 9 ft. .TONIGHT...E winds 10 to 20 kt. Seas 7 to 10 ft. .THU...E winds 10 to 20 kt. Seas 8 to 11 ft. .THU NIGHT...E winds 10 to 20 kt. Seas 8 to 10 ft. .FRI...E winds 10 to 20 kt. Seas 7 to 9 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 6 to 8 ft. .SAT...SE winds less than 10 kt. Seas 5 to 7 ft. .SAT NIGHT...SE winds less than 10 kt. Seas 5 to 6 ft. .SUN...SE winds 10 to 15 kt. Seas 5 ft.