000 FZNT31 KNHC 260912 OFFN20 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 512 AM EDT Sun Sep 26 2021 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 Atlantic from 07N to 19N between 55W and 64W .SYNOPSIS...Hurricane Sam near 13.8N 49.7W 943 mb at 5 AM EDT moving WNW at 7 kt. Maximum sustained winds 125 kt gusts 150 kt. Sam will move to 14.3N 50.6W this afternoon, 15.0N 51.8W Mon morning, 15.8N 52.9W Mon afternoon, 16.6N 53.9W Tue morning, 17.5N 55.0W Tue afternoon, and 18.4N 56.3W Wed morning. Sam will change little in intensity as it moves to 20.8N 59.3W by early Thu. Meanwhile, moderate trade winds will persist over much of the Caribbean into early next week. Fresh winds will prevail over the south-central Caribbean as high pressure builds east of the Bahamas through midweek. NW Caribbean W of 85W .TODAY...E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 2 ft or less. .TONIGHT...E winds 10 kt. Seas 2 ft or less. .MON...E winds less than 10 kt. Seas 2 ft or less. .MON NIGHT...E winds 10 to 15 kt. Seas 2 ft or less. .TUE...E winds less than 10 kt. Seas 2 ft or less. .TUE NIGHT...E winds 10 to 15 kt. Seas 2 ft or less. .WED...E winds less than 10 kt. Seas 2 ft or less. .WED NIGHT...E winds 10 to 15 kt. Seas 2 ft or less. .THU...E winds less than 10 kt. Seas 2 ft or less. Caribbean N of 15N between 72W and 85W .TODAY...E winds 10 to 20 kt S of 18N, and NE less than 10 kt elsewhere. Seas 5 ft S of 18N, and 2 ft or less elsewhere. .TONIGHT...NE winds 10 to 15 kt. Seas 2 ft or less. .MON...NE winds 10 to 15 kt S of 18N, and NE less than 10 kt elsewhere. Seas 2 ft or less. .MON NIGHT...NE winds 10 to 15 kt. Seas 2 ft or less. .TUE...E winds 10 to 15 kt S of 18N, and E less than 10 kt elsewhere. Seas 2 ft or less. .TUE NIGHT...E winds less than 10 kt. Seas 2 ft or less. .WED...E winds less than 10 kt. Seas 2 ft or less. .WED NIGHT...E winds less than 10 kt. Seas 2 ft or less. .THU...E winds less than 10 kt. Seas 2 ft or less. Caribbean from 11N to 15N W of 72W .TODAY...NE winds 10 to 20 kt. Seas 5 to 6 ft. .TONIGHT...NE winds 10 to 20 kt. Seas 5 to 6 ft. .MON...NE winds 10 to 20 kt. Seas 5 to 6 ft. .MON NIGHT...NE winds 10 to 20 kt. Seas 5 ft in the evening, subsiding to 2 ft or less. .TUE...E winds 10 to 15 kt. Seas 2 ft or less. .TUE NIGHT...NE winds 10 to 15 kt. Seas 2 ft or less. .WED...E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 2 ft or less. .WED NIGHT...NE winds less than 10 kt. Seas 2 ft or less. .THU...E winds less than 10 kt. Seas 2 ft or less. SW Caribbean S of 11N .TODAY...NE winds 10 to 20 kt. Seas 5 ft. .TONIGHT...N winds 10 to 15 kt. Seas 5 ft. .MON...NE winds 10 to 15 kt. Seas 5 ft. .MON NIGHT...N winds less than 10 kt. Seas 5 ft in the evening, subsiding to 2 ft or less. .TUE...N winds less than 10 kt. Seas 2 ft or less. .TUE NIGHT...N winds less than 10 kt in the evening, becoming variable winds less than 10 kt. Seas 2 ft or less. .WED...N winds less than 10 kt. Seas 2 ft or less. .WED NIGHT...Variable winds less than 10 kt. Seas 2 ft or less. .THU...Variable winds less than 10 kt. Seas 2 ft or less. Caribbean between 64W and 72W .TODAY...E winds 10 to 20 kt. Gulf of Venezuela, seas 2 ft or less. Elsewhere, seas 5 ft in the morning, subsiding to 2 ft or less. .TONIGHT...E winds 10 to 20 kt. Seas 2 ft or less. .MON...E winds 10 to 15 kt. Seas 2 ft or less. .MON NIGHT...E winds 10 to 15 kt. Seas 2 ft or less. .TUE...E winds 10 to 15 kt. Seas 2 ft or less. .TUE NIGHT...E winds 10 to 15 kt. Seas 2 ft or less. .WED...NE winds less than 10 kt Gulf of Venezuela, and E 10 to 15 kt elsewhere. Seas 2 ft or less. .WED NIGHT...E winds less than 10 kt Gulf of Venezuela, and E 10 to 15 kt elsewhere. Seas 2 ft or less. .THU...NE winds less than 10 kt Gulf of Venezuela, and E 10 to 15 kt elsewhere. Seas 2 ft or less. Offshore Leeward Islands and adjacent ATLC waters from 15N to 19N W of 55W .TODAY...E winds 10 kt. Seas 5 to 6 ft. .TONIGHT...E winds 10 to 15 kt. Seas 5 to 6 ft. .MON...TROPICAL STORM CONDITIONS POSSIBLE. E winds 10 to 20 kt. Seas 5 to 7 ft. .MON NIGHT...HURRICANE CONDITIONS POSSIBLE. E winds 10 to 20 kt, becoming NE 20 to 30 kt after midnight. Seas 6 to 9 ft. .TUE...HURRICANE CONDITIONS POSSIBLE. NE winds 40 to 50 kt, increasing to 80 to 100 kt in the afternoon. Seas 7 to 10 ft, building to 8 to 13 ft in the afternoon. .TUE NIGHT...HURRICANE CONDITIONS POSSIBLE. .WED...HURRICANE CONDITIONS POSSIBLE. .WED NIGHT...HURRICANE CONDITIONS POSSIBLE. .THU...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 5 to 6 ft. .TONIGHT...E winds 10 to 15 kt, diminishing to less than 10 kt after midnight. Seas 5 to 6 ft. .MON...E winds 10 to 15 kt. Seas 5 to 7 ft. .MON NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. E winds 10 to 20 kt. Seas 5 to 7 ft. .TUE...TROPICAL STORM CONDITIONS POSSIBLE. SE winds 10 to 20 kt. Seas 6 to 8 ft. .TUE NIGHT...E winds 10 to 15 kt. Seas 6 to 8 ft. .WED...SE winds 10 to 15 kt. Seas 6 to 8 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. Synopsis for the the SW N Atlantic including the Bahamas .SYNOPSIS...A surface trough extends from 30N74W to 24N78W with scattered showers. Farther east, Hurricane Sam near 13.8N 49.7W 943 mb at 5 AM EDT moving WNW at 7 kt. Maximum sustained winds 125 kt gusts 150 kt. Sam will move to 14.3N 50.6W this afternoon, 15.0N 51.8W Mon morning, 15.8N 52.9W Mon afternoon, 16.6N 53.9W Tue morning, 17.5N 55.0W Tue afternoon, and 18.4N 56.3W Wed morning. Sam will change little in intensity as it moves to 20.8N 59.3W by early Thu. ATLC waters from 27N to 31N W of 77W .TODAY...N winds 10 to 15 kt. Seas 5 ft. .TONIGHT...NE winds 10 to 15 kt. Seas 5 ft. .MON...NE winds 10 to 15 kt. Seas 5 ft. .MON NIGHT...E winds 10 to 15 kt. Seas 5 ft in the evening, subsiding to 2 ft or less. .TUE...NE winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 2 ft or less. .TUE NIGHT...E winds less than 10 kt. Seas 2 ft or less. .WED...NE winds less than 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 2 ft or less. .WED NIGHT...NE winds 10 to 15 kt, diminishing to less than 10 kt after midnight. Seas 2 ft or less. .THU...NE winds 10 to 15 kt. Seas 2 ft or less, building to 5 ft in the afternoon. ATLC waters from 27N to 31N between 65W and 77W .TODAY...NW winds 10 to 15 kt W of 70W, and W less than 10 kt elsewhere. Seas 5 ft. .TONIGHT...N winds 10 to 15 kt W of 70W, and W less than 10 kt elsewhere. Seas 5 ft. .MON...NE winds 10 to 15 kt. Seas 5 ft. .MON NIGHT...W of 70W, NE winds 10 to 15 kt. Elsewhere, NE winds 10 to 15 kt, shifting to E after midnight. Seas 5 ft in the evening, subsiding to 2 ft or less. .TUE...NE winds 10 to 15 kt W of 70W, and SE less than 10 kt elsewhere. Seas 2 ft or less. .TUE NIGHT...W of 70W, NE winds 10 to 15 kt, diminishing to less than 10 kt after midnight. Elsewhere, SE winds less than 10 kt. Seas 5 to 6 ft. .WED...W of 70W, NE winds less than 10 kt, increasing to 10 to 15 kt in the afternoon. Elsewhere, Variable winds less than 10 kt. Seas 5 to 6 ft. .WED NIGHT...NE winds 10 to 15 kt W of 70W, and E less than 10 kt elsewhere. Seas 5 to 7 ft. .THU...NE winds 10 to 15 kt W of 70W, and E less than 10 kt elsewhere. Seas 5 to 7 ft. Bahamas N of 22N .TODAY...NE winds 10 to 15 kt. Seas 2 ft or less. .TONIGHT...NE winds 10 to 15 kt. Seas 2 ft or less. .MON...NE winds 10 to 15 kt. Seas 2 ft or less. .MON NIGHT...NE winds 10 to 15 kt. Seas 2 ft or less. .TUE...NE winds 10 to 15 kt. Seas 2 ft or less. .TUE NIGHT...NE winds 10 to 15 kt. Seas 2 ft or less. .WED...E winds less than 10 kt, shifting to NE in the afternoon. Seas 2 ft or less. .WED NIGHT...NE winds 10 to 15 kt. Seas 2 ft or less. .THU...NE winds 10 to 15 kt. Seas 2 ft or less. ATLC waters from 22N to 27N between 65W and the Bahamas .TODAY...N winds less than 10 kt. Seas 2 ft or less. .TONIGHT...NE winds less than 10 kt. Seas 2 ft or less. .MON...W of 70W, NE winds less than 10 kt, increasing to 10 to 15 kt in the afternoon. Elsewhere, Variable winds less than 10 kt. Seas 2 ft or less. .MON NIGHT...E winds 10 to 15 kt W of 70W, and E less than 10 kt elsewhere. Seas 2 ft or less. .TUE...E winds 10 to 15 kt W of 70W, and SE less than 10 kt elsewhere. Seas 2 ft or less. .TUE NIGHT...E winds 10 to 15 kt W of 70W, and SE less than 10 kt elsewhere. Seas 5 to 6 ft. .WED...E winds 10 to 15 kt W of 70W, and SE less than 10 kt elsewhere. Seas 5 to 7 ft. .WED NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. .THU...TROPICAL STORM CONDITIONS POSSIBLE. ATLC waters S of 22N W of 65W .TODAY...E winds less than 10 kt. Seas 2 ft or less. .TONIGHT...NE winds less than 10 kt, shifting to E after midnight. Seas 2 ft or less. .MON...E winds less than 10 kt. Seas 2 ft or less. .MON NIGHT...E winds less than 10 kt. Seas 2 ft or less. .TUE...E winds 10 kt. Seas 5 ft in the morning, subsiding to 2 ft or less. .TUE NIGHT...E winds 10 kt. Seas 5 ft. .WED...E winds 10 kt. Seas 5 to 6 ft. .WED NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. .THU...TROPICAL STORM CONDITIONS POSSIBLE. ATLC waters from 19N to 22N between 55W and 65W .TODAY...SE winds 10 kt. Seas 5 to 6 ft. .TONIGHT...E winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 5 to 7 ft. .MON...E winds 10 to 15 kt. Seas 5 to 7 ft. .MON NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. E winds 10 to 20 kt. Seas 6 to 9 ft. .TUE...HURRICANE CONDITIONS POSSIBLE. E winds 20 to 30 kt. Seas 7 to 10 ft. .TUE NIGHT...HURRICANE CONDITIONS POSSIBLE. .WED...HURRICANE CONDITIONS POSSIBLE. .WED NIGHT...HURRICANE CONDITIONS POSSIBLE. .THU...HURRICANE CONDITIONS POSSIBLE.