000 FZNT31 KNHC 152115 OFFN20 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 515 PM EDT Sun Aug 15 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...Tropical Depression Grace near 17.2N 67.2W 1011 mb at 5 PM EDT moving WNW at 10 kt. Maximum sustained winds 30 kt gusts 40 kt. Grace will move to 17.6N 68.8W Mon morning, inland to 18.2N 71.0W Mon afternoon, 19.2N 73.2W Tue morning, inland to 20.2N 75.8W Tue afternoon, 21.0N 78.7W Wed morning, and 22.1N 81.8W Wed afternoon. Grace will strengthen to a tropical storm over 24.0N 87.0W by Thu afternoon. NW Caribbean W of 85W .TONIGHT...SE winds 10 to 15 kt. Seas 2 ft or less. .MON...SE winds 10 to 15 kt. Seas 3 ft. .MON NIGHT...E winds 10 to 15 kt. Seas 2 ft or less, building to 3 ft after midnight. .TUE...E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 3 ft in the morning, subsiding to 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 10 to 15 kt. Seas 3 ft. .THU NIGHT...E winds 10 to 20 kt. Seas 3 to 4 ft. .FRI...SE winds 10 to 20 kt. Seas 3 to 4 ft. Caribbean N of 15N between 72W and 85W .TONIGHT...E winds 10 to 15 kt S of 18N, and E less than 10 kt elsewhere. Seas 2 ft or less. .MON...S of 18N, E winds 10 to 15 kt. Elsewhere, E winds less than 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 2 ft or less. .MON NIGHT...S of 18N, E winds less than 10 kt, increasing to 10 to 15 kt after midnight. Elsewhere, NE winds 10 to 20 kt. Seas 2 ft or less. .TUE...S of 18N, E winds 10 to 20 kt. Elsewhere, E winds 15 to 25 kt, diminishing to 10 to 15 kt in the afternoon. Seas 2 ft or less. .TUE NIGHT...E winds 10 to 20 kt. Seas 2 ft or less, building to 3 ft after midnight. .WED...E winds 15 to 25 kt S of 18N, and E 10 to 20 kt elsewhere. Seas 4 to 6 ft S of 18N, and 2 ft or less elsewhere. .WED NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft S of 18N, and 3 to 4 ft elsewhere. .THU...E winds 10 to 20 kt. Seas 4 to 6 ft. .THU NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. .FRI...E winds 10 to 20 kt. Seas 3 to 5 ft. Caribbean from 11N to 15N W of 72W .TONIGHT...NE 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, increasing to 10 to 15 kt after midnight. Seas 2 ft or less. .TUE...E winds 10 to 15 kt. Seas 2 ft or less. .TUE NIGHT...E winds 10 to 20 kt. Seas 2 ft or less, building to 3 to 4 ft after midnight. .WED...E winds 10 to 20 kt. Seas 3 to 5 ft. .WED NIGHT...E winds 10 to 20 kt within 90 nm of coast of Colombia, and E 15 to 25 kt elsewhere. Seas 4 to 6 ft. .THU...E winds 10 to 20 kt. Seas 4 to 6 ft. .THU NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. .FRI...E winds 10 to 20 kt. Seas 4 to 6 ft. SW Caribbean S of 11N .TONIGHT...Variable winds less than 10 kt. Seas 3 ft in the evening, subsiding to 2 ft or less. .MON...Variable winds less than 10 kt. Seas 2 ft or less. .MON NIGHT...Variable winds less than 10 kt. Seas 2 ft or less. .TUE...Variable winds less than 10 kt. Seas 2 ft or less. .TUE NIGHT...Variable winds less than 10 kt. Seas 2 ft or less. .WED...Variable winds less than 10 kt. Seas 2 ft or less. .WED NIGHT...Variable winds less than 10 kt. Seas 2 ft or less. .THU...SW winds less than 10 kt. Seas 3 to 4 ft. .THU NIGHT...NW winds less than 10 kt in the evening, becoming variable winds less than 10 kt. Seas 3 to 5 ft. .FRI...SW winds less than 10 kt. Seas 3 to 5 ft. Caribbean between 64W and 72W .TONIGHT...TROPICAL STORM CONDITIONS POSSIBLE. NE winds less than 10 kt Gulf of Venezuela, and E 20 to 30 kt elsewhere. Seas 3 ft. .MON...Variable winds less than 10 kt Gulf of Venezuela, and SE 15 to 25 kt elsewhere. Seas 2 ft or less Gulf of Venezuela, and 3 to 4 ft elsewhere. .MON NIGHT...NE winds less than 10 kt Gulf of Venezuela, and E 10 to 20 kt elsewhere. Seas 2 ft or less Gulf of Venezuela, and 3 to 4 ft elsewhere. .TUE...NE winds less than 10 kt Gulf of Venezuela, and E 10 to 20 kt elsewhere. Seas 2 ft or less Gulf of Venezuela, and 3 to 5 ft elsewhere. .TUE NIGHT...E winds 10 to 20 kt. Seas 2 ft or less Gulf of Venezuela, and 4 to 6 ft elsewhere. .WED...E winds 10 to 20 kt. Seas 2 ft or less Gulf of Venezuela, and 4 to 6 ft elsewhere. .WED NIGHT...E winds 10 to 20 kt. Seas 3 ft Gulf of Venezuela, and 4 to 6 ft elsewhere. .THU...E winds 10 to 20 kt. Seas 3 ft Gulf of Venezuela, and 4 to 6 ft elsewhere. .THU NIGHT...E winds 10 to 20 kt. Seas 2 ft or less Gulf of Venezuela, and 4 to 6 ft elsewhere. .FRI...E winds 10 to 20 kt. Seas 2 ft or less Gulf of Venezuela, and 4 to 6 ft elsewhere. Offshore Leeward Islands and adjacent ATLC waters from 15N to 19N W of 55W .TONIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. .MON...E winds 10 to 15 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 5 ft. .TUE NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. .WED...E winds 10 to 20 kt. Seas 4 to 6 ft. .WED NIGHT...NE winds 10 to 20 kt. Seas 4 to 6 ft. .THU...E winds 10 to 20 kt. Seas 4 to 6 ft. .THU NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. .FRI...E winds 10 to 20 kt. Seas 4 to 6 ft. Offshore Windward Islands and adjacent ATLC waters from 07N to 15N W of 55W .TONIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. .MON...E winds 10 to 15 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 5 ft. .TUE NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft. .WED...E winds 10 to 20 kt. Seas 4 to 6 ft. .WED NIGHT...NE winds 10 to 20 kt. Seas 4 to 6 ft. .THU...E winds 10 to 20 kt. Seas 4 to 6 ft. .THU NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft. .FRI...E winds 10 to 20 kt. Seas 3 to 5 ft. Synopsis for the the SW N Atlantic including the Bahamas .SYNOPSIS...Tropical Depression Grace near 17.2N 67.2W 1011 mb at 5 PM EDT moving WNW at 10 kt. Maximum sustained winds 30 kt gusts 40 kt. Grace will move to 17.6N 68.8W Mon morning, inland to 18.2N 71.0W Mon afternoon, 19.2N 73.2W Tue morning, inland to 20.2N 75.8W Tue afternoon, 21.0N 78.7W Wed morning, and 22.1N 81.8W Wed afternoon. Grace will strengthen to a tropical storm over 24.0N 87.0W by Thu afternoon. Otherwise, high pressure will persist across the area through the period. ATLC waters from 27N to 31N W of 77W .TONIGHT...SE winds 10 to 15 kt. Seas 4 ft. .MON...SE winds 10 to 15 kt. Seas 3 to 5 ft. .MON NIGHT...SE winds 10 to 15 kt. Seas 3 to 4 ft. .TUE...SE winds 10 to 15 kt. Seas 3 to 4 ft. .TUE NIGHT...SE winds 10 to 15 kt. Seas 3 to 4 ft. .WED...SE winds 10 to 15 kt. Seas 3 to 4 ft. .WED NIGHT...SE winds 10 to 15 kt. Seas 3 to 4 ft. .THU...SE winds 10 to 15 kt. Seas 3 to 4 ft. .THU NIGHT...SE winds less than 10 kt. Seas 3 ft. .FRI...SE winds less than 10 kt. Seas 3 ft. ATLC waters from 27N to 31N between 65W and 77W .TONIGHT...W of 70W, E winds 10 to 15 kt. Elsewhere, E winds 10 to 15 kt, diminishing to less than 10 kt after midnight. Seas 3 to 4 ft. .MON...E winds 10 to 15 kt W of 70W, and E less than 10 kt elsewhere. Seas 3 to 4 ft. .MON NIGHT...E winds 10 to 15 kt W of 70W, and E less than 10 kt elsewhere. Seas 3 to 4 ft. .TUE...W of 70W, E winds 10 to 15 kt. Elsewhere, NE winds less than 10 kt, shifting to S in the afternoon. Seas 3 to 4 ft. .TUE NIGHT...W of 70W, E winds less than 10 kt, increasing to 10 to 15 kt after midnight. Elsewhere, S winds less than 10 kt. Seas 3 to 4 ft. .WED...E winds 10 to 15 kt W of 70W, and SE less than 10 kt elsewhere. Seas 3 to 4 ft. .WED NIGHT...W of 70W, E winds 10 to 15 kt, diminishing to less than 10 kt after midnight. Elsewhere, Variable winds less than 10 kt. Seas 3 to 4 ft. .THU...SE winds less than 10 kt. Seas 3 to 4 ft. .THU NIGHT...SE winds less than 10 kt. Seas 3 ft. .FRI...S winds less than 10 kt. Seas 3 ft. Bahamas N of 22N .TONIGHT...E winds 10 to 15 kt. Seas 3 ft. .MON...E winds 10 to 15 kt. Seas 3 ft in the morning, subsiding to 2 ft or less. .MON NIGHT...E winds 10 to 15 kt. Seas 2 ft or less. .TUE...E winds 20 to 30 kt. Seas 3 ft. .TUE NIGHT...E winds 20 to 30 kt. Seas 3 to 4 ft. .WED...SE winds 20 to 30 kt. Seas 3 to 4 ft. .WED NIGHT...E winds 10 to 20 kt. Seas 3 to 4 ft. .THU...E winds 10 to 20 kt. Seas 2 ft or less. .THU NIGHT...E winds 10 to 15 kt. Seas 2 ft or less. .FRI...E winds 10 to 15 kt. Seas 2 ft or less. ATLC waters from 22N to 27N between 65W and the Bahamas .TONIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. .MON...E winds 10 to 15 kt. Seas 3 to 5 ft. .MON NIGHT...SE winds 10 to 20 kt. Seas 3 to 5 ft. .TUE...SE winds 10 to 20 kt. Seas 3 to 5 ft. .TUE NIGHT...SE winds 10 to 20 kt. Seas 3 to 5 ft. .WED...E winds 10 to 20 kt. Seas 3 to 4 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. ATLC waters S of 22N W of 65W .TONIGHT...TROPICAL STORM CONDITIONS POSSIBLE. E winds 20 to 30 kt. Seas 3 to 5 ft. .MON...E winds 10 to 20 kt, increasing to 20 to 30 kt in the afternoon. Seas 3 to 5 ft. .MON NIGHT...E winds 20 to 30 kt. Seas 4 to 6 ft. .TUE...E winds 20 to 30 kt. Seas 5 to 7 ft. .TUE NIGHT...E winds 20 to 30 kt. Seas 4 to 6 ft. .WED...E winds 10 to 20 kt. Seas 3 to 4 ft. .WED NIGHT...E winds 10 to 20 kt. Seas 3 to 4 ft. .THU...E winds 10 to 20 kt. Seas 3 to 4 ft. .THU NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft. .FRI...E winds 10 to 20 kt. Seas 3 to 5 ft. ATLC waters from 19N to 22N between 55W and 65W .TONIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. .MON...E winds 10 to 15 kt. Seas 4 to 5 ft. .MON NIGHT...E winds 10 to 15 kt. Seas 4 to 5 ft. .TUE...E winds 10 to 15 kt. Seas 4 ft. .TUE NIGHT...E winds 10 to 15 kt. Seas 4 to 5 ft. .WED...E winds 10 to 15 kt. Seas 4 to 5 ft. .WED NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. .THU...E winds 10 to 20 kt. Seas 4 to 6 ft. .THU NIGHT...E winds 10 to 20 kt. Seas 5 to 6 ft. .FRI...E winds 15 to 20 kt. Seas 5 to 6 ft.