524 FZNT31 KNHC 151635 OFFN20 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 1235 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 Storm Grace near 17.2N 66.0W 1010 mb at 11 AM EDT moving WNW at 14 kt. Maximum sustained winds 35 kt gusts 45 kt. Grace will move to 17.8N 67.8W this evening, inland to 18.5N 69.7W Mon morning, move inland and weaken to a tropical depression near 19.3N 71.7W Mon evening, strengthen to a tropical storm near 20.3N 74.0W Tue morning, 21.3N 76.6W Tue evening, and inland to 22.3N 79.4W Wed morning. Grace will change little in intensity as it moves into the eastern Gulf of Mexico near 23.9N 82.5W late Wed night. NW Caribbean W of 85W .THIS AFTERNOON...SE winds less than 10 kt. Seas 2 ft or less. .TONIGHT...SE winds 10 to 15 kt. Seas 2 ft or less. .MON...SE 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, building to 3 ft after midnight. .TUE...E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. 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, building to 3 ft after midnight. .THU...E winds 10 to 15 kt. Seas 3 ft. Caribbean N of 15N between 72W and 85W ...TROPICAL STORM WARNING... .THIS AFTERNOON...E winds 10 to 15 kt S of 18N, and E less than 10 kt elsewhere. Seas 2 ft or less. .TONIGHT...E winds 10 to 15 kt S of 18N, and E less than 10 kt elsewhere. Seas 2 ft or less. .MON...E winds 10 to 15 kt S of 18N, and E less than 10 kt elsewhere. Seas 2 ft or less. .MON NIGHT...E winds less than 10 kt S of 18N, and NE 10 to 15 kt elsewhere. Seas 2 ft or less. .TUE...TROPICAL STORM CONDITIONS POSSIBLE. S of 18N, E winds 10 to 15 kt. Elsewhere, E winds 25 to 35 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. S of 18N, seas 4 to 6 ft. Elsewhere, seas 2 ft or less, building to 3 to 4 ft after midnight. .THU...E winds 10 to 20 kt. Seas 4 to 6 ft. Caribbean from 11N to 15N W of 72W .THIS AFTERNOON...E winds less than 10 kt within 90 nm of coast of Colombia, and E 10 to 15 kt elsewhere. Seas 3 ft. .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 3 ft in the evening, subsiding to 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 4 to 6 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. SW Caribbean S of 11N .THIS AFTERNOON...SE winds less than 10 kt. Seas 3 ft. .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, building to 3 ft after midnight. .THU...SW winds less than 10 kt. Seas 3 to 5 ft. Caribbean between 64W and 72W ...TROPICAL STORM WARNING... .THIS AFTERNOON...TROPICAL STORM CONDITIONS POSSIBLE. Variable winds less than 10 kt Gulf of Venezuela, and SE 20 to 30 kt elsewhere. Seas 2 ft or less Gulf of Venezuela, and 3 to 4 ft elsewhere. .TONIGHT...TROPICAL STORM CONDITIONS POSSIBLE. Gulf of Venezuela, NE winds less than 10 kt in the evening, becoming variable winds less than 10 kt. Elsewhere, E winds 30 to 40 kt. Seas 3 ft. .MON...TROPICAL STORM CONDITIONS POSSIBLE. Gulf of Venezuela, Variable winds less than 10 kt. Elsewhere, SE winds 30 to 40 kt, diminishing to 15 to 25 kt in the afternoon. 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. Offshore Leeward Islands and adjacent ATLC waters from 15N to 19N W of 55W .THIS AFTERNOON...SE winds 10 to 20 kt. Seas 4 to 6 ft. .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...NE winds 10 to 20 kt. Seas 4 to 6 ft. Offshore Windward Islands and adjacent ATLC waters from 07N to 15N W of 55W .THIS AFTERNOON...E winds 10 to 15 kt. Seas 3 to 5 ft. .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 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. Synopsis for the the SW N Atlantic including the Bahamas .SYNOPSIS...Tropical Storm Grace near 17.2N 66.0W 1010 mb at 11 AM EDT moving WNW at 14 kt. Maximum sustained winds 35 kt gusts 45 kt. Grace will move to 17.8N 67.8W this evening, inland to 18.5N 69.7W Mon morning. Grace is forecast to weaken to a tropical depression near 19.3N 71.7W Mon evening, then strengthen to a tropical storm near 20.3N 74.0W Tue morning, 21.3N 76.6W Tue evening, and inland to 22.3N 79.4W Wed morning. Grace will change little in intensity as it moves into the eastern Gulf of Mexico late Wed night. Otherwise, high pressure will persist across the area through the period. ATLC waters from 27N to 31N W of 77W .THIS AFTERNOON...SE winds 10 to 15 kt. Seas 4 to 5 ft. .TONIGHT...SE winds 10 to 15 kt. Seas 3 to 5 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. ATLC waters from 27N to 31N between 65W and 77W .THIS AFTERNOON...E winds 10 to 15 kt. Seas 3 to 5 ft. .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...E winds 10 to 15 kt W of 70W, and S less than 10 kt elsewhere. 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. Elsewhere, SE winds less than 10 kt in the evening, becoming variable winds less than 10 kt. Seas 3 to 4 ft. .THU...SE winds less than 10 kt. Seas 3 to 4 ft. Bahamas N of 22N .THIS AFTERNOON...E winds 10 to 15 kt. Seas 3 ft. .TONIGHT...E winds less than 10 kt. Seas 3 ft. .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 20 to 30 kt. Seas 2 ft or less, building to 3 ft in the afternoon. .TUE NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. .WED...E winds 20 to 30 kt. Seas 3 to 4 ft. .WED NIGHT...SE winds 20 to 30 kt, diminishing to 10 to 20 kt after midnight. Seas 3 ft. .THU...E winds 10 to 15 kt. Seas 2 ft or less. ATLC waters from 22N to 27N between 65W and the Bahamas .THIS AFTERNOON...E winds 10 to 15 kt. Seas 4 to 5 ft. .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...SE 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. ATLC waters S of 22N W of 65W ...TROPICAL STORM WARNING... .THIS AFTERNOON...TROPICAL STORM CONDITIONS POSSIBLE. E winds 10 to 20 kt. Seas 3 to 5 ft. .TONIGHT...TROPICAL STORM CONDITIONS POSSIBLE. E winds 30 to 40 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...TROPICAL STORM CONDITIONS POSSIBLE. E winds 25 to 35 kt. Seas 5 to 7 ft. .TUE NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. .WED...E winds 15 to 25 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. ATLC waters from 19N to 22N between 55W and 65W .THIS AFTERNOON...E winds 10 to 20 kt. Seas 5 to 6 ft. .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 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.