585 FZNT31 KNHC 091515 OFFN20 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 1115 AM 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 14.3N 39.1W 999 mb at 11 AM EDT moving W at 8 kt. Maximum sustained winds 55 kt gusts 65 kt. Isaac will strengthen to a hurricane near 14.4N 40.8W this evening, move to 14.4N 43.3W Mon morning, 14.4N 46.3W Mon evening, 14.3N 49.1W Tue morning, and 14.2N 54.8W Wed morning. Isaac will change little in intensity as it moves across the central Lesser Antilles near 14.5N 60.5W early Thu, and weaken to a tropical storm over the eastern Caribbean near 15.0N 66.5W Fri morning. 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 .THIS AFTERNOON...SE winds 10 to 15 kt. Seas 3 to 4 ft. .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...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. Caribbean N of 15N between 72W and 85W .THIS AFTERNOON...E winds 10 to 20 kt. Seas 3 to 5 ft. .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 20 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. Caribbean from 11N to 15N W of 72W .THIS AFTERNOON...E winds 10 to 20 kt. Seas 3 to 5 ft. .TONIGHT...E winds 15 to 25 kt. Seas 4 to 6 ft. .MON...E winds 10 to 20 kt. Seas 4 to 6 ft. .MON NIGHT...NE winds 15 to 25 kt within 90 nm of coast of Colombia, and E 15 to 25 kt elsewhere. Seas 4 to 6 ft. .TUE...E winds 10 to 20 kt. Seas 4 to 6 ft. .TUE NIGHT...E winds 15 to 25 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. SW Caribbean S of 11N .THIS AFTERNOON...E winds less than 10 kt. Seas 3 ft. .TONIGHT...NE winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 3 ft. .MON...NE winds 10 to 15 kt. Seas 3 ft. .MON NIGHT...NE winds 10 to 20 kt. Seas 3 to 4 ft. .TUE...N 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. Caribbean between 64W and 72W .THIS AFTERNOON...E winds 10 to 20 kt. Seas 3 to 5 ft. .TONIGHT...NE winds 10 to 20 kt Gulf of Venezuela, and E 15 to 25 kt elsewhere. 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...HURRICANE CONDITIONS POSSIBLE. Offshore Leeward Islands and adjacent ATLC waters from 15N to 19N W of 55W .THIS AFTERNOON...E winds less than 10 kt. Seas 4 to 6 ft. .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. .WED...HURRICANE CONDITIONS POSSIBLE. .WED NIGHT...HURRICANE CONDITIONS POSSIBLE. .THU...HURRICANE CONDITIONS POSSIBLE. Offshore Windward Islands and adjacent ATLC waters from 07N to 15N W of 55W .THIS AFTERNOON...E winds less than 10 kt. Seas 3 to 5 ft. .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. .WED...HURRICANE CONDITIONS POSSIBLE. .WED NIGHT...HURRICANE CONDITIONS POSSIBLE. .THU...HURRICANE CONDITIONS POSSIBLE. Synopsis for the the SW N ATLC including the Bahamas .SYNOPSIS...Hurricane Florence near 24.4N 56.3W 983 mb at 11 AM EDT moving W at 5 kt. Maximum sustained winds 65 kt gusts 80 kt. Florence will move to 24.5N 57.4W this evening, 24.9N 59.3W Mon morning, 25.6N 61.7W Mon evening, 26.4N 64.5W Tue morning, and 29.0N 70.8W Wed morning. Florence will change little in intensity as it moves north of the northwest offshore waters near 32.2N 75.8W early Thu, and inland over North Carolina near 35.0N 78.5W Fri morning. 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 .THIS AFTERNOON...S winds 10 kt. Seas 5 ft. .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. ATLC waters from 27N to 31N between 65W and 77W ...HURRICANE WARNING... .THIS AFTERNOON...SW winds less than 10 kt. Seas 5 to 6 ft. .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. Seas 5 to 7 ft W of 70W, and 8 to 11 ft elsewhere. .TUE...HURRICANE CONDITIONS POSSIBLE. W of 70W, NE winds 10 to 20 kt,Seas 7 to 10 ft. Elsewhere, N winds 40 to 50 kt, becoming NE 70 to 90 kt in the afternoon,Seas 11 to 16 ft, building to 17 to 22 ft in the afternoon. .TUE NIGHT...HURRICANE CONDITIONS POSSIBLE. .WED...HURRICANE CONDITIONS POSSIBLE. .WED NIGHT...HURRICANE CONDITIONS POSSIBLE. .THU...HURRICANE CONDITIONS POSSIBLE. Bahamas N of 22N .THIS AFTERNOON...SE winds less than 10 kt. Seas 3 ft. .TONIGHT...E winds less than 10 kt. Seas 3 ft. .MON...E winds less than 10 kt. Seas 3 ft. .MON NIGHT...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...SE winds 10 to 15 kt. Seas 3 to 5 ft. ATLC waters from 22N to 27N between 65W and the Bahamas ...HURRICANE WARNING... .THIS AFTERNOON...NE winds less than 10 kt. Seas 5 to 6 ft. .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 POSSIBLE. W of 70W, N winds 10 to 20 kt. Elsewhere, NW winds 50 to 60 kt, becoming W 80 to 90 kt in the afternoon. Seas 7 to 10 ft W of 70W, and 12 to 17 ft elsewhere. .TUE NIGHT...HURRICANE CONDITIONS POSSIBLE. .WED...TROPICAL STORM CONDITIONS POSSIBLE. .WED NIGHT...SE winds 15 to 25 kt W of 70W, and E 10 to 20 kt elsewhere. W of 70W, seas 9 to 14 ft, subsiding to 8 to 11 ft after midnight. Elsewhere, seas 7 to 8 ft. .THU...E winds 10 to 15 kt. Seas 8 to 11 ft W of 70W, and 7 to 8 ft elsewhere. ATLC waters S of 22N W of 65W .THIS AFTERNOON...E winds 10 kt. Seas 4 to 6 ft. .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. ATLC waters from 19N to 22N between 55W and 65W .THIS AFTERNOON...NW winds 10 to 15 kt. Seas 7 to 9 ft. .TONIGHT...NW winds 10 to 15 kt, diminishing to less than 10 kt after midnight. Seas 6 to 9 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 9 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.