021 FZNT31 KNHC 110318 OFFN20 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 1118 PM 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...Isaac has weakened to tropical storm strength near 14.5N 46.9W 997 mb at 11 PM EDT moving W at 14 kt. Maximum sustained winds 60 kt gusts 75 kt. Isaac will move to 14.5N 49.0W Tue morning, then become a minimal hurricane near 14.6N 51.7W Tue evening. Isaac will continue to 14.8N 54.3W Wed morning, 15.0N 56.9W Wed evening. Isaac will weaken to a tropical storm near 15.4N 62.4W Thu evening, and continue weakening slowly as it moves to 15.5N 68.0W Fri evening and to 15.5N 72.5W Sat evening. NW Caribbean W of 85W .OVERNIGHT...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 4 to 6 ft. .WED...SE winds 10 to 15 kt. Seas 4 to 6 ft. .WED NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. .THU...E winds 10 to 15 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 to 3 ft. .SAT...E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 2 ft or less. Caribbean N of 15N between 72W and 85W .OVERNIGHT...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...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 3 ft. .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. Caribbean from 11N to 15N W of 72W .OVERNIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft. .TUE...E winds 10 to 20 kt. Seas 4 to 6 ft. .TUE NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. .WED...E winds 10 to 15 kt. Seas 3 to 5 ft. .WED NIGHT...E winds 10 to 20 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 10 to 15 kt. Seas 3 to 4 ft. .FRI NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. N winds less than 10 kt within 90 nm of coast of Colombia, and E 10 to 15 kt elsewhere. Seas 3 to 4 ft. .SAT...TROPICAL STORM CONDITIONS POSSIBLE. SW Caribbean S of 11N .OVERNIGHT...N winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 3 to 4 ft. .TUE...NE winds 10 to 15 kt, shifting to N in the afternoon. Seas 3 to 5 ft. .TUE NIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft. .WED...NE winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 3 to 4 ft. .WED NIGHT...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. Caribbean between 64W and 72W .OVERNIGHT...NE winds less than 10 kt Gulf of Venezuela, and E 10 to 20 kt elsewhere. Seas 3 to 5 ft. .TUE...NE winds less than 10 kt Gulf of Venezuela, and E 10 to 15 kt elsewhere. Gulf of Venezuela, seas 2 to 3 ft. Elsewhere, seas 3 to 5 ft. .TUE NIGHT...NE winds less than 10 kt Gulf of Venezuela, and E 10 to 20 kt elsewhere. Seas 3 to 5 ft. .WED...N winds less than 10 kt Gulf of Venezuela, and E 10 to 20 kt elsewhere. Seas 3 to 5 ft. .WED NIGHT...N 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. .THU NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. .FRI...TROPICAL STORM CONDITIONS POSSIBLE. .FRI NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. .SAT...TROPICAL STORM CONDITIONS POSSIBLE. Offshore Leeward Islands and adjacent ATLC waters from 15N to 19N W of 55W ...TROPICAL STORM WARNING... .OVERNIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. .TUE...E winds 10 to 15 kt. Seas 3 to 5 ft. .TUE NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. NE winds 20 to 30 kt. Seas 4 to 6 ft, building to 6 to 9 ft after midnight. .WED...TROPICAL STORM CONDITIONS EXPECTED. NE winds 25 to 35 kt, increasing to 50 to 60 kt in the afternoon. Seas 8 to 11 ft. .WED NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. NE winds 50 to 60 kt. Seas 9 to 14 ft. .THU...TROPICAL STORM CONDITIONS POSSIBLE. .THU NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. .FRI...TROPICAL STORM CONDITIONS POSSIBLE. .FRI NIGHT...E winds 20 to 30 kt, diminishing to 10 to 15 kt after midnight. Seas 6 to 9 ft. .SAT...SE winds 10 to 15 kt. Seas 6 to 8 ft. Offshore Windward Islands and adjacent ATLC waters from 07N to 15N W of 55W ...TROPICAL STORM WARNING... .OVERNIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. .TUE...NE winds 10 to 15 kt. Seas 3 to 4 ft. .TUE NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. NE winds 20 to 30 kt. Seas 4 to 6 ft. .WED...TROPICAL STORM CONDITIONS EXPECTED. NE winds 30 to 40 kt, becoming N 50 to 60 kt in the afternoon. Seas 6 to 9 ft. .WED NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. N winds 50 to 60 kt, shifting to S after midnight. Seas 7 to 10 ft. .THU...TROPICAL STORM CONDITIONS POSSIBLE. .THU NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. .FRI...TROPICAL STORM CONDITIONS POSSIBLE. .FRI NIGHT...E winds 15 to 25 kt, diminishing to 10 to 15 kt after midnight. Seas 6 to 8 ft. .SAT...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 25.9N 62.4W 944 mb at 11 PM EDT moving WNW at 11 kt. Florence will remain an extremely dangerous major hurricane through Thursday. Maximum sustained winds 120 kt gusts 145 kt. Florence will move to 26.5N 64.5W Tue morning, 27.9N 67.5W Tue evening, 29.6N 70.4W Wed morning, 31.3N 73.2W Wed evening, and pass north of the area to near 34.0N 76.5W Thu evening. ATLC waters from 27N to 31N W of 77W .OVERNIGHT...Variable winds less than 10 kt. Seas 3 to 4 ft. .TUE...Variable winds less than 10 kt. Seas 3 to 4 ft. .TUE NIGHT...Variable winds less than 10 kt. Seas 4 to 6 ft. .WED...N winds 10 to 15 kt. Seas 7 to 10 ft. .WED NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. W winds 20 to 30 kt. Seas 13 to 18 ft. .THU...TROPICAL STORM CONDITIONS POSSIBLE. .THU NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. .FRI...TROPICAL STORM CONDITIONS POSSIBLE. .FRI NIGHT...S winds 10 to 15 kt. Seas 4 to 6 ft. .SAT...S winds 10 to 15 kt. Seas 5 to 7 ft. ATLC waters from 27N to 31N between 65W and 77W ...HURRICANE WARNING... .OVERNIGHT...HURRICANE CONDITIONS POSSIBLE. NE winds 10 to 15 kt W of 70W, and N 20 to 30 kt elsewhere. Seas 4 to 6 ft W of 70W, and 8 to 11 ft elsewhere. .TUE...HURRICANE CONDITIONS EXPECTED. W of 70W, NE winds 10 to 20 kt,Seas 4 to 6 ft, building to 6 to 9 ft in the afternoon. Elsewhere, N winds 45 to 55 kt, becoming NE 85 to 105 kt in the afternoon. Seas 11 to 16 ft, building to 18 to 28 ft in the afternoon. .TUE NIGHT...HURRICANE CONDITIONS EXPECTED. W of 70W, N winds 20 to 30 kt, increasing to 40 to 50 kt after midnight. Seas 9 to 14 ft, building to 15 to 20 ft after midnight. Elsewhere, SE winds 90 to 110 kt. Seas 26 to 36 ft. .WED...HURRICANE CONDITIONS EXPECTED. W of 70W, NW winds 90 to 110 kt,Seas 22 to 32 ft. Elsewhere, S winds 90 to 110 kt, diminishing to 40 to 50 kt in the afternoon. Seas 22 to 32 ft, subsiding to 14 to 19 ft in the afternoon. .WED NIGHT...HURRICANE CONDITIONS POSSIBLE. W of 70W, SW winds 90 to 110 kt, diminishing to 50 to 60 kt after midnight. Seas 18 to 28 ft, subsiding to 15 to 20 ft after midnight. Elsewhere, S winds 20 to 30 kt. Seas 9 to 14 ft, subsiding to 8 to 11 ft after midnight. .THU...HURRICANE CONDITIONS POSSIBLE. .THU NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. .FRI...W of 70W, SE winds 15 to 25 kt, becoming E 10 kt in the afternoon. Elsewhere, E winds 10 to 15 kt. Seas 7 to 10 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 6 to 9 ft. .SAT...NE winds 10 to 15 kt. Seas 6 to 9 ft. Bahamas N of 22N .OVERNIGHT...NE winds less than 10 kt. Seas 2 ft or less. .TUE...NE winds less than 10 kt. Seas 2 ft or less. .TUE NIGHT...NE winds less than 10 kt. Seas 4 to 6 ft. .WED...E winds less than 10 kt. Seas 4 to 6 ft. .WED NIGHT...E winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 3 to 5 ft. .THU...E 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...NE winds 10 to 15 kt. Seas 3 to 5 ft. .SAT...E winds less than 10 kt. Seas 3 to 5 ft. ATLC waters from 22N to 27N between 65W and the Bahamas ...HURRICANE WARNING... .OVERNIGHT...HURRICANE CONDITIONS POSSIBLE. NE winds 10 kt W of 70W, and NW 20 to 30 kt elsewhere. Seas 4 to 5 ft W of 70W, and 8 to 11 ft elsewhere. .TUE...HURRICANE CONDITIONS EXPECTED. W of 70W, N winds 10 to 20 kt,Seas 4 to 6 ft, building to 6 to 9 ft in the afternoon. Elsewhere, NW winds 50 to 60 kt, becoming W 85 to 105 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. Elsewhere, SW winds 40 to 50 kt, becoming S 20 to 30 kt after midnight. Seas 9 to 14 ft W of 70W, and 12 to 17 ft elsewhere. .WED...SE winds 15 to 25 kt. Seas 8 to 11 ft. .WED NIGHT...SE winds 10 to 15 kt. Seas 6 to 9 ft. .THU...E 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 6 to 9 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 7 to 9 ft. .SAT...NE winds less than 10 kt. Seas 7 to 9 ft. ATLC waters S of 22N W of 65W .OVERNIGHT...NE winds less than 10 kt. Seas 4 to 6 ft. .TUE...E winds less than 10 kt. Seas 5 to 7 ft. .TUE NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. .WED...E winds 10 to 15 kt. Seas 4 to 6 ft. .WED NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .THU...E winds 10 to 15 kt. Seas 5 to 7 ft. .THU NIGHT...NE winds 10 to 15 kt. Seas 6 to 9 ft. .FRI...NE winds 10 to 15 kt. Seas 6 to 9 ft. .FRI NIGHT...NE winds 10 to 20 kt. Seas 6 to 8 ft. .SAT...E winds 10 to 20 kt. Seas 6 to 8 ft. ATLC waters from 19N to 22N between 55W and 65W .OVERNIGHT...SE winds 10 to 15 kt. Seas 5 to 7 ft. .TUE...E winds 10 to 15 kt. Seas 5 to 7 ft. .TUE NIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft. .WED...E winds 10 to 20 kt. Seas 7 to 10 ft. .WED NIGHT...E winds 15 to 20 kt. Seas 8 to 11 ft. .THU...E winds 10 to 20 kt. Seas 8 to 12 ft. .THU NIGHT...E winds 10 to 20 kt. Seas 8 to 12 ft. .FRI...E winds 10 to 20 kt. Seas 8 to 11 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 7 to 9 ft. .SAT...S winds less than 10 kt. Seas 6 to 8 ft.