771 FZNT31 KNHC 112120 OFFN20 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 520 PM EDT Tue Sep 11 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 near 14.6N 51.3W 996 mb at 5 PM EDT moving W at 15 kt. Maximum sustained winds 60 kt gusts 75 kt. Isaac will move to 14.6N 53.4W Wed morning, 14.8N 56.2W Wed afternoon, 15.0N 59.2W Thu morning, 15.3N 62.3W Thu afternoon, and 15.5N 68.5W Fri afternoon. Isaac will change little in intensity as it moves to near 15.5N 73.5W Sat afternoon, and continue to near 15.5N 77.5W Sun. NW Caribbean W of 85W .TONIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. .WED...SE winds 10 to 15 kt, shifting to E in the afternoon. Seas 3 to 5 ft. .WED NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. .THU...E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. 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, diminishing to less than 10 kt in the afternoon. Seas 3 to 4 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 3 ft. .SAT...E winds less than 10 kt. Seas 3 ft in the morning, subsiding to 2 ft or less. .SAT NIGHT...NE winds less than 10 kt. Seas 2 ft or less. .SUN...NE winds 10 to 15 kt. Seas 2 ft or less. Caribbean N of 15N between 72W and 85W .TONIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. .WED...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 3 to 4 ft. .WED NIGHT...E winds 10 to 15 kt S of 18N, and E less than 10 kt elsewhere. Seas 2 ft or less, building to 3 ft after midnight. .THU...E winds 10 to 15 kt S of 18N, and E less than 10 kt elsewhere. Seas 3 ft. .THU NIGHT...E winds 10 to 15 kt S of 18N, and E less than 10 kt elsewhere. Seas 3 ft. .FRI...E winds 10 to 15 kt S of 18N, and NE less than 10 kt elsewhere. Seas 3 ft. .FRI NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. .SAT...TROPICAL STORM CONDITIONS POSSIBLE. .SAT NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. .SUN...E winds 35 to 45 kt S of 18N, and E 10 to 20 kt elsewhere. Seas 4 to 6 ft S of 18N, and 3 ft elsewhere. Caribbean from 11N to 15N W of 72W .TONIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. .WED...E winds 10 to 15 kt. Seas 4 to 6 ft. .WED NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. .THU...E winds 10 to 15 kt. Seas 3 to 5 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. .FRI...E winds less than 10 kt within 90 nm of coast of Colombia, and E 10 to 15 kt elsewhere. Seas 3 to 4 ft. .FRI NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. .SAT...TROPICAL STORM CONDITIONS POSSIBLE. .SAT NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. .SUN...SW winds 10 to 15 kt within 90 nm of coast of Colombia, and W 35 to 45 kt elsewhere. Seas 4 to 6 ft. SW Caribbean S of 11N .TONIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. .WED...NE winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 3 to 5 ft. .WED NIGHT...E winds less than 10 kt. Seas 3 to 5 ft. .THU...NE winds less than 10 kt. Seas 3 to 4 ft. .THU NIGHT...NE winds less than 10 kt. Seas 3 to 4 ft. .FRI...E winds less than 10 kt, shifting to S in the afternoon. Seas 3 to 4 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, becoming W less than 10 kt after midnight. Seas 3 to 4 ft. .SUN...SW winds less than 10 kt. Seas 3 to 5 ft. Caribbean between 64W and 72W .TONIGHT...N winds less than 10 kt Gulf of Venezuela, and E 10 to 20 kt elsewhere. Seas 3 to 4 ft. .WED...Gulf of Venezuela, NE winds less than 10 kt in the morning, becoming variable winds less than 10 kt,Seas 3 ft in the morning, subsiding to 2 ft or less. Elsewhere, E winds 10 to 15 kt,Seas 3 to 5 ft. .WED NIGHT...Variable winds less than 10 kt Gulf of Venezuela, and NE 10 to 20 kt elsewhere. Seas 3 to 5 ft. .THU...TROPICAL STORM CONDITIONS POSSIBLE. Variable winds less than 10 kt Gulf of Venezuela, and NE 10 to 20 kt elsewhere. Gulf of Venezuela, seas 3 ft in the morning, subsiding to 2 ft or less. Elsewhere, seas 4 to 6 ft. .THU NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. Variable winds less than 10 kt Gulf of Venezuela, and N 40 to 50 kt elsewhere. Seas 2 ft or less Gulf of Venezuela, and 6 to 9 ft elsewhere. .FRI...TROPICAL STORM CONDITIONS POSSIBLE. .FRI NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. .SAT...TROPICAL STORM CONDITIONS POSSIBLE. .SAT NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. .SUN...Variable winds less than 10 kt Gulf of Venezuela, and SE 10 to 20 kt elsewhere. Seas 2 ft or less Gulf of Venezuela, and 4 to 6 ft elsewhere. Offshore Leeward Islands and adjacent ATLC waters from 15N to 19N W of 55W ...TROPICAL STORM WARNING... .TONIGHT...TROPICAL STORM CONDITIONS POSSIBLE. NE winds 10 to 20 kt, increasing to 20 to 30 kt after midnight. Seas 4 to 6 ft, building to 6 to 9 ft after midnight. .WED...TROPICAL STORM CONDITIONS EXPECTED. E winds 45 to 55 kt. Seas 7 to 10 ft. .WED NIGHT...TROPICAL STORM CONDITIONS EXPECTED. E winds 45 to 55 kt. Seas 8 to 13 ft. .THU...TROPICAL STORM CONDITIONS EXPECTED. E winds 45 to 55 kt. Seas 9 to 14 ft. .THU NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. E winds 45 to 55 kt, diminishing to 25 to 35 kt after midnight. Seas 8 to 13 ft. .FRI...E winds 15 to 25 kt. Seas 6 to 9 ft. .FRI NIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft. .SAT...E winds 10 to 15 kt. Seas 5 to 7 ft. .SAT NIGHT...E winds 10 to 15 kt. Seas 5 to 7 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... .TONIGHT...TROPICAL STORM CONDITIONS POSSIBLE. NE winds 15 to 25 kt. Seas 4 to 6 ft. .WED...TROPICAL STORM CONDITIONS EXPECTED. E winds 45 to 55 kt. Seas 6 to 9 ft. .WED NIGHT...TROPICAL STORM CONDITIONS EXPECTED. E winds 45 to 55 kt. Seas 7 to 10 ft. .THU...TROPICAL STORM CONDITIONS POSSIBLE. SE winds 45 to 55 kt. Seas 6 to 9 ft. .THU NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. SE winds 40 to 50 kt, diminishing to 20 to 30 kt after midnight. Seas 6 to 9 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 5 to 7 ft. .SAT NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. .SUN...E winds 10 to 15 kt. Seas 5 to 7 ft. Synopsis for the the SW N ATLC including the Bahamas .SYNOPSIS...Hurricane Florence near 27.5N 67.1W 945 mb at 5 PM EDT moving WNW at 15 kt. Maximum sustained winds 120 kt gusts 145 kt. Florence will move to 28.7N 69.3W Wed morning, 30.4N 72.1W Wed afternoon, and will move north of the area to a position near 32.1N 74.5W Thu morning. ATLC waters from 27N to 31N W of 77W .TONIGHT...Variable winds less than 10 kt, becoming NE less than 10 kt after midnight. Seas 4 to 6 ft. .WED...NE winds 10 to 15 kt. Seas 7 to 10 ft. .WED NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. N winds 10 to 20 kt. Seas 11 to 16 ft. .THU...TROPICAL STORM CONDITIONS POSSIBLE. NW winds 10 to 20 kt. Seas 9 to 14 ft. .THU NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. SW winds 10 to 20 kt. Seas 8 to 11 ft. .FRI...TROPICAL STORM CONDITIONS POSSIBLE. .FRI NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. .SAT...W winds 10 to 20 kt. Seas 5 to 7 ft. .SAT NIGHT...W winds 15 to 25 kt. Seas 6 to 8 ft. .SUN...SW winds 20 to 30 kt. Seas 6 to 9 ft. ATLC waters from 27N to 31N between 65W and 77W ...HURRICANE WARNING... .TONIGHT...HURRICANE CONDITIONS. W of 70W, NE winds 15 to 25 kt, becoming N 40 to 50 kt after midnight,Seas 8 to 11 ft, building to 12 to 17 ft after midnight. Elsewhere, E winds 105 to 125 kt,Seas 21 to 31 ft. .WED...HURRICANE CONDITIONS EXPECTED. W of 70W, N winds 110 to 130 kt,Seas 18 to 28 ft. Elsewhere, SE winds 105 to 125 kt, diminishing to 40 to 50 kt in the afternoon,Seas 18 to 28 ft, subsiding to 13 to 18 ft in the afternoon. .WED NIGHT...HURRICANE CONDITIONS EXPECTED. W of 70W, W winds 110 to 130 kt, becoming SW 65 to 75 kt after midnight,Seas 16 to 26 ft, subsiding to 14 to 19 ft after midnight. Elsewhere, SE winds 25 to 35 kt,Seas 9 to 14 ft, subsiding to 8 to 11 ft after midnight. .THU...TROPICAL STORM CONDITIONS EXPECTED. SW winds 30 to 40 kt W of 70W, and SE 10 to 20 kt elsewhere. W of 70W, seas 9 to 14 ft, subsiding to 8 to 11 ft in the afternoon. Elsewhere, seas 7 to 10 ft. .THU NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. S winds 15 to 25 kt W of 70W, and SE 10 to 15 kt elsewhere. Seas 8 to 11 ft W of 70W, and 7 to 8 ft elsewhere. .FRI...TROPICAL STORM CONDITIONS POSSIBLE. .FRI NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. .SAT...W of 70W, SW winds 15 to 25 kt. Elsewhere, SE winds less than 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 7 to 10 ft. .SAT NIGHT...SW winds 15 to 25 kt W of 70W, and SE 10 to 15 kt elsewhere. Seas 7 to 10 ft. .SUN...S winds 15 to 25 kt W of 70W, and SE 10 to 15 kt elsewhere. Seas 7 to 10 ft. Bahamas N of 22N .TONIGHT...NE winds less than 10 kt. Seas 3 to 5 ft. .WED...E winds less than 10 kt. Seas 3 to 5 ft. .WED NIGHT...NE winds less than 10 kt, shifting to E after midnight. Seas 3 to 5 ft. .THU...SE winds 10 to 15 kt. Seas 3 to 4 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 3 to 5 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 4 ft. .SUN...SE winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 3 to 5 ft. ATLC waters from 22N to 27N between 65W and the Bahamas ...HURRICANE WARNING... .TONIGHT...HURRICANE CONDITIONS. W of 70W, NW winds 15 to 25 kt,Seas 8 to 13 ft. Elsewhere, SW winds 60 to 70 kt, becoming S 30 to 40 kt after midnight,Seas 12 to 17 ft, subsiding to 8 to 13 ft after midnight. .WED...SW winds 10 to 20 kt W of 70W, and S 15 to 25 kt elsewhere. Seas 8 to 13 ft W of 70W, and 7 to 10 ft elsewhere. .WED NIGHT...SE winds 10 to 15 kt. Seas 6 to 9 ft. .THU...SE winds 10 to 15 kt. Seas 6 to 8 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 6 to 9 ft. .FRI...E winds 10 to 15 kt. Seas 7 to 9 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 7 to 9 ft. .SAT...W of 70W, SE winds 10 to 15 kt. Elsewhere, E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 7 to 9 ft. .SAT NIGHT...W of 70W, SE winds 10 to 15 kt. Elsewhere, E winds less than 10 kt, shifting to SE after midnight. Seas 6 to 8 ft. .SUN...W of 70W, S winds 10 to 15 kt. Elsewhere, SE winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 6 to 7 ft. ATLC waters S of 22N W of 65W .TONIGHT...E winds less than 10 kt. Seas 4 to 6 ft. .WED...E winds 10 to 15 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 6 to 9 ft. .FRI...E winds 10 to 20 kt. Seas 6 to 9 ft. .FRI NIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft. .SAT...E winds 10 to 20 kt. Seas 5 to 7 ft. .SAT NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. .SUN...SE winds 10 to 15 kt. Seas 4 to 6 ft. ATLC waters from 19N to 22N between 55W and 65W .TONIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft. .WED...E winds 15 to 25 kt. Seas 7 to 10 ft. .WED NIGHT...E winds 10 to 20 kt. Seas 8 to 11 ft. .THU...E winds 10 to 20 kt. Seas 9 to 12 ft. .THU NIGHT...E winds 10 to 20 kt. Seas 8 to 11 ft. .FRI...E winds 10 to 20 kt. Seas 7 to 10 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 7 to 9 ft. .SAT...SE winds 10 to 15 kt. Seas 6 to 8 ft. .SAT NIGHT...SE winds less than 10 kt. Seas 6 to 7 ft. .SUN...SE winds 10 kt. Seas 5 to 6 ft.