105 FZNT31 KNHC 092033 OFFN20 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 433 PM EDT Sun Sep 9 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 14.5N 40.3W 997 mb at 5 PM EDT moving W at 10 kt. Maximum sustained winds 60 kt gusts 75 kt. Isaac will strengthen to a hurricane near 14.6N 42.2W Mon morning, move to 14.8N 45.0W Mon afternoon, 14.9N 48.0W Tue morning, 14.9N 50.9W Tue afternoon, and 15.0N 56.5W Wed afternoon. Isaac will weaken to a tropical storm near 15.5N 63.0W Thu afternoon, and change little in intensity as it moves to the central Caribbean near 15.5N 69.5W Fri. Otherwise, relatively weak ridging over the western Atlantic will maintain moderate to fresh trade winds over most of the region through Mon night. NW Caribbean W of 85W .TONIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft. .MON...SE winds 10 to 20 kt. Seas 3 to 5 ft. .MON NIGHT...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...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 .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 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 .TONIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. .MON...E winds 10 to 20 kt. Seas 4 to 6 ft. .MON NIGHT...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 .TONIGHT...NE winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 3 ft. .MON...NE winds less than 10 kt. Seas 3 ft. .MON NIGHT...N winds 10 to 20 kt. Seas 3 to 4 ft. .TUE...NE winds 10 to 20 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 .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 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 10 to 20 kt. Seas 3 ft Gulf of Venezuela, and 4 to 6 ft elsewhere. .THU...TROPICAL STORM CONDITIONS POSSIBLE. .THU NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. .FRI...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 8 to 13 ft elsewhere. Offshore Leeward Islands and adjacent ATLC waters from 15N to 19N W of 55W .TONIGHT...E winds less than 10 kt. Seas 4 to 6 ft. .MON...E winds less than 10 kt. Seas 4 to 6 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...HURRICANE CONDITIONS POSSIBLE. NE winds 10 to 20 kt, increasing to 20 to 30 kt after midnight. Seas 6 to 9 ft. .WED...HURRICANE CONDITIONS POSSIBLE. .WED NIGHT...HURRICANE CONDITIONS POSSIBLE. .THU...HURRICANE CONDITIONS POSSIBLE. .THU NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. .FRI...SE winds 20 to 30 kt. Seas 8 to 13 ft. Offshore Windward Islands and adjacent ATLC waters from 07N to 15N W of 55W .TONIGHT...E winds less than 10 kt. Seas 3 to 5 ft. .MON...E winds less than 10 kt. Seas 3 to 5 ft. .MON NIGHT...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...HURRICANE CONDITIONS POSSIBLE. NE winds 10 to 20 kt, increasing to 20 to 30 kt after midnight. Seas 5 to 7 ft. .WED...HURRICANE CONDITIONS POSSIBLE. .WED NIGHT...HURRICANE CONDITIONS POSSIBLE. .THU...HURRICANE CONDITIONS POSSIBLE. .THU NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. .FRI...SE winds 20 to 30 kt. Seas 7 to 10 ft. Synopsis for the the SW N ATLC including the Bahamas .SYNOPSIS...Hurricane Florence near 24.4N 57.0W 975 mb at 5 PM EDT moving W at 6 kt. Maximum sustained winds 75 kt gusts 90 kt. Florence will move to 24.6N 58.3W Mon morning, 25.1N 60.4W Mon afternoon, 25.9N 63.1W Tue morning, 27.0N 66.2W Tue afternoon, and 30.3N 72.6W Wed afternoon. Florence will change little in intensity as it moves to 33.5N 77.5W Thu afternoon, and weaken to a tropical storm while moving inland over 35.0N 79.0W Fri. Otherwise, a weak pressure pattern across the SW N Atlc will maintain gentle to moderate mainly easterly winds across the area through Mon. ATLC waters from 27N to 31N W of 77W .TONIGHT...S winds 10 kt. Seas 5 ft. .MON...S winds 10 kt. Seas 5 ft. .MON NIGHT...SE winds less than 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. .WED NIGHT...HURRICANE CONDITIONS POSSIBLE. .THU...HURRICANE 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... .TONIGHT...NE winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 5 to 7 ft. .MON...NE winds 10 to 15 kt. Seas 6 to 8 ft. .MON NIGHT...HURRICANE CONDITIONS POSSIBLE. NE winds 10 to 15 kt W of 70W, and N 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, NE winds 10 to 20 kt,Seas 7 to 10 ft. Elsewhere, N winds 50 to 60 kt, becoming NE 85 to 105 kt in the afternoon,Seas 11 to 16 ft, building to 17 to 22 ft in the afternoon. .TUE NIGHT...HURRICANE CONDITIONS POSSIBLE. W of 70W, N winds 20 to 30 kt, increasing to 60 to 70 kt after midnight,Seas 8 to 11 ft, building to 12 to 17 ft after midnight. Elsewhere, SE winds 85 to 105 kt,Seas 18 to 28 ft. .WED...HURRICANE CONDITIONS POSSIBLE. .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 .TONIGHT...E winds less than 10 kt. Seas 3 ft. .MON...E winds 10 kt. Seas 3 ft. .MON NIGHT...E winds 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...SE 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... .TONIGHT...NE winds 10 to 15 kt. Seas 5 to 7 ft. .MON...NE winds 10 to 15 kt. Seas 6 to 8 ft. .MON NIGHT...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. Elsewhere, NW winds 80 to 90 kt, becoming W 85 to 105 kt in the afternoon. Seas 7 to 10 ft W of 70W, and 12 to 17 ft elsewhere. .TUE NIGHT...HURRICANE CONDITIONS POSSIBLE. 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 65 to 75 kt, becoming S 25 to 35 kt after midnight,Seas 12 to 17 ft. .WED...TROPICAL STORM CONDITIONS POSSIBLE. .WED NIGHT...SE winds 15 to 25 kt W of 70W, and E 10 to 20 kt elsewhere. 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 .TONIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. .MON...NE winds less than 10 kt. Seas 4 to 6 ft. .MON NIGHT...NE winds 10 to 15 kt. Seas 5 to 7 ft. .TUE...SE 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 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...TROPICAL STORM CONDITIONS POSSIBLE. .FRI...E winds 10 to 20 kt. Seas 6 to 8 ft. ATLC waters from 19N to 22N between 55W and 65W .TONIGHT...NW winds 10 to 15 kt, diminishing to less than 10 kt after midnight. Seas 6 to 8 ft. .MON...SW winds 10 to 15 kt, shifting to S in the afternoon. Seas 6 to 8 ft. .MON NIGHT...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 10 to 20 kt. Seas 8 to 11 ft. .FRI...E winds 10 to 20 kt. Seas 7 to 10 ft.