676 FZNT31 KNHC 100916 OFFN20 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 516 AM EDT Mon Sep 10 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...Hurricane Isaac near 14.7N 42.7W 993 mb at 5 AM EDT moving W at 11 kt. Maximum sustained winds 65 kt gusts 80 kt. Isaac will move to 14.8N 44.6W this afternoon, 15.0N 47.4W tonight, 15.0N 50.3W Tue afternoon, 15.0N 53.0W Tue night and to 15.3N 58.0W Wed night. Isaac will weaken to a tropical storm near 15.5N 64.0W Thu night, and continue to weaken as it moves to the central Caribbean near 15.6N 69.2W Fri night. Otherwise, relatively weak ridging over the western Atlantic will maintain moderate to fresh trade winds over most of the region through tonight. NW Caribbean W of 85W .TODAY...SE winds 10 to 20 kt. Seas 3 to 5 ft. .TONIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. .TUE...SE winds 10 to 20 kt. Seas 4 to 6 ft. .TUE NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft. .WED...E winds 10 to 20 kt. Seas 3 to 5 ft. .WED NIGHT...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. Caribbean N of 15N between 72W and 85W .TODAY...E winds 10 to 20 kt. Seas 3 to 5 ft. .TONIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft. .TUE...E winds 10 to 20 kt. Seas 3 to 4 ft. .TUE NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. .WED...E winds 10 to 15 kt. Seas 3 to 4 ft. .WED NIGHT...E winds 10 to 15 kt S of 18N, and E less than 10 kt elsewhere. Seas 3 ft. .THU...E winds 10 to 15 kt. Seas 3 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft S of 18N, and 2 ft or less elsewhere. .FRI...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 20 kt. Seas 4 to 6 ft. .TONIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. .TUE...E winds 10 to 20 kt. Seas 4 to 6 ft. .TUE NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft. .WED...E winds 10 to 20 kt. Seas 3 to 5 ft. .WED NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft. .THU...E winds 10 to 20 kt. Seas 3 to 5 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. .FRI...E winds 10 to 15 kt. Seas 3 to 4 ft. SW Caribbean S of 11N .TODAY...NE winds less than 10 kt. Seas 3 ft. .TONIGHT...N winds less than 10 kt, shifting to NE after midnight. Seas 3 to 4 ft. .TUE...N winds 10 to 15 kt. Seas 3 to 5 ft. .TUE NIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. .WED...NE winds 10 to 15 kt. Seas 3 to 4 ft. .WED NIGHT...E winds less than 10 kt. Seas 3 ft. .THU...E winds less than 10 kt. Seas 3 ft. .THU NIGHT...E winds less than 10 kt. Seas 3 ft. .FRI...SE winds less than 10 kt. Seas 3 ft. Caribbean between 64W and 72W .TODAY...E winds 10 to 20 kt. Seas 3 to 5 ft. .TONIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft. .TUE...E winds 10 to 20 kt. Gulf of Venezuela, seas 3 ft in the morning, subsiding to 2 ft or less. Elsewhere, seas 3 to 5 ft. .TUE NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft. .WED...E winds 10 to 20 kt. Seas 3 to 5 ft. .WED NIGHT...NE winds less than 10 kt Gulf of Venezuela, and NE 10 to 20 kt elsewhere. Seas 3 ft Gulf of Venezuela, and 4 to 6 ft elsewhere. .THU...TROPICAL STORM CONDITIONS POSSIBLE. .THU NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. .FRI...TROPICAL STORM CONDITIONS POSSIBLE. Offshore Leeward Islands and adjacent ATLC waters from 15N to 19N W of 55W .TODAY...E winds less than 10 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 4 to 6 ft. .TUE NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. NE winds 20 to 30 kt. Seas 5 to 7 ft, building to 7 to 10 ft after midnight. .WED...HURRICANE CONDITIONS POSSIBLE. NE winds 30 to 40 kt, increasing to 55 to 65 kt in the afternoon. Seas 8 to 11 ft, building to 9 to 14 ft in the afternoon. .WED NIGHT...HURRICANE CONDITIONS POSSIBLE. .THU...TROPICAL STORM CONDITIONS POSSIBLE. .THU NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. .FRI...TROPICAL STORM CONDITIONS POSSIBLE. Offshore Windward Islands and adjacent ATLC waters from 07N to 15N W of 55W .TODAY...E winds less than 10 kt. Seas 3 to 5 ft. .TONIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft. .TUE...NE winds 10 to 15 kt. Seas 3 to 5 ft. .TUE NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. NE winds 20 to 30 kt. Seas 5 to 7 ft. .WED...HURRICANE CONDITIONS POSSIBLE. NE winds 30 to 40 kt, becoming N 50 to 60 kt in the afternoon. Seas 7 to 10 ft. .WED NIGHT...HURRICANE CONDITIONS POSSIBLE. .THU...TROPICAL STORM CONDITIONS POSSIBLE. .THU NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. .FRI...TROPICAL STORM CONDITIONS POSSIBLE. Synopsis for the the SW N ATLC including the Bahamas .SYNOPSIS...Hurricane Florence near 24.9N 58.9W 969 mb at 5 AM EDT moving WNW at 8 kt. Maximum sustained winds 90 kt gusts 110 kt. Florence will move to 25.4N 60.5W this afternoon, 26.1N 63.1W tonight, 27.3N 66.2W Tue afternoon, 28.8N 69.3W Tue night, and 32.2N 74.8W Wed night. Florence is forecast to become a major hurricane this morning, and is expected to remain an extremely dangerous major hurricane through Thursday. Florence will continue to 34.5N 78.1W Thu night, and weaken to a tropical storm while moving inland to near 35.8N 79.6W Fri night. ATLC waters from 27N to 31N W of 77W .TODAY...S winds 10 kt. Seas 5 ft. .TONIGHT...SE winds 10 kt in the evening, becoming variable winds less than 10 kt. Seas 4 to 5 ft. .TUE...Variable winds less than 10 kt. Seas 5 to 6 ft. .TUE NIGHT...Variable winds less than 10 kt. Seas 6 to 8 ft. .WED...TROPICAL STORM CONDITIONS POSSIBLE. N winds 10 to 20 kt. Seas 7 to 10 ft. .WED NIGHT...HURRICANE CONDITIONS POSSIBLE. .THU...TROPICAL STORM CONDITIONS POSSIBLE. .THU NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. .FRI...S winds 15 to 25 kt, diminishing to 10 to 15 kt in the afternoon. Seas 7 to 10 ft. ATLC waters from 27N to 31N between 65W and 77W ...HURRICANE WARNING... .TODAY...NE winds 10 to 15 kt. Seas 6 to 8 ft. .TONIGHT...HURRICANE CONDITIONS POSSIBLE. NE winds 10 to 15 kt W of 70W, and N 20 to 30 kt elsewhere. Seas 5 to 7 ft W of 70W, and 8 to 11 ft elsewhere. .TUE...HURRICANE CONDITIONS EXPECTED. W of 70W, NE winds 10 to 20 kt,Seas 7 to 10 ft. Elsewhere, N winds 55 to 65 kt, becoming NE 80 to 100 kt in the afternoon. Seas 11 to 16 ft, building to 16 to 26 ft in the afternoon. .TUE NIGHT...HURRICANE CONDITIONS POSSIBLE. W of 70W, N winds 20 to 30 kt, increasing to 50 to 60 kt after midnight. Seas 8 to 13 ft, building to 13 to 18 ft after midnight. Elsewhere, SE winds 85 to 105 kt. Seas 21 to 31 ft. .WED...HURRICANE CONDITIONS POSSIBLE. W of 70W, NW winds 85 to 105 kt. Seas 16 to 26 ft, building to 19 to 29 ft in the afternoon. Elsewhere, S winds 85 to 105 kt, diminishing to 35 to 45 kt in the afternoon. Seas 18 to 28 ft, subsiding to 11 to 16 ft in the afternoon. .WED NIGHT...HURRICANE CONDITIONS POSSIBLE. .THU...HURRICANE CONDITIONS POSSIBLE. .THU NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. .FRI...W of 70W, SE winds 15 to 25 kt, shifting to E 10 to 15 kt in the afternoon. Elsewhere, E winds 10 to 15 kt. Seas 8 to 11 ft W of 70W, and 7 to 8 ft elsewhere. Bahamas N of 22N .TODAY...E winds less than 10 kt. Seas 3 ft. .TONIGHT...NE winds less than 10 kt. Seas 3 ft. .TUE...NE winds less than 10 kt. Seas 3 to 4 ft. .TUE NIGHT...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...E winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 4 to 6 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 10 to 15 kt. Seas 3 to 4 ft. ATLC waters from 22N to 27N between 65W and the Bahamas ...HURRICANE WARNING... .TODAY...NE winds 10 to 15 kt. Seas 6 to 8 ft. .TONIGHT...HURRICANE CONDITIONS POSSIBLE. NE winds 10 to 15 kt W of 70W, and NW 20 to 30 kt elsewhere. W of 70W, seas 5 to 7 ft. Elsewhere, seas 7 to 10 ft, building to 8 to 13 ft after midnight. .TUE...HURRICANE CONDITIONS EXPECTED. W of 70W, N winds 10 to 20 kt. Seas 7 to 10 ft. Elsewhere, NW winds 60 to 70 kt, becoming W 85 to 95 kt in the afternoon. Seas 11 to 16 ft, building to 14 to 19 ft in the afternoon. .TUE NIGHT...TROPICAL STORM CONDITIONS EXPECTED. W of 70W, NW winds 20 to 30 kt. Seas 8 to 11 ft, building to 9 to 14 ft after midnight. Elsewhere, SW winds 35 to 45 kt, becoming S 20 to 30 kt after midnight. Seas 13 to 18 ft. .WED...TROPICAL STORM CONDITIONS POSSIBLE. SE winds 20 to 30 kt, diminishing to 10 to 20 kt in the afternoon. W of 70W, seas 9 to 14 ft. Elsewhere, seas 9 to 14 ft, subsiding to 8 to 11 ft in the afternoon. .WED NIGHT...SE winds 10 to 20 kt. Seas 8 to 13 ft W of 70W, and 7 to 9 ft elsewhere. .THU...E winds 10 to 15 kt. Seas 8 to 11 ft W of 70W, and 7 to 8 ft elsewhere. .THU NIGHT...E winds 10 to 15 kt. Seas 7 to 8 ft. .FRI...E winds 10 to 15 kt. Seas 7 to 8 ft. ATLC waters S of 22N W of 65W .TODAY...NE winds less than 10 kt. Seas 4 to 6 ft. .TONIGHT...NE winds less than 10 kt. Seas 5 to 7 ft. .TUE...E winds less than 10 kt. Seas 5 to 7 ft. .TUE NIGHT...E winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 5 to 7 ft. .WED...E winds 10 to 15 kt. Seas 5 to 7 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...NE winds 10 to 15 kt. Seas 6 to 8 ft. .FRI...E winds 15 to 25 kt. Seas 6 to 8 ft. ATLC waters from 19N to 22N between 55W and 65W .TODAY...SW winds 10 to 15 kt, shifting to S in the afternoon. Seas 6 to 8 ft. .TONIGHT...SE winds 10 to 15 kt. Seas 6 to 8 ft. .TUE...E winds 10 to 15 kt. Seas 6 to 8 ft. .TUE NIGHT...E winds 10 to 20 kt. Seas 7 to 10 ft. .WED...E winds 10 to 20 kt. Seas 8 to 11 ft. .WED NIGHT...E winds 15 to 20 kt. Seas 8 to 11 ft. .THU...E winds 10 to 20 kt. Seas 8 to 11 ft. .THU NIGHT...E winds 15 to 25 kt. Seas 8 to 11 ft. .FRI...E winds 10 to 20 kt. Seas 7 to 10 ft.