996 FZNT31 KNHC 190913 OFFN20 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 513 AM EDT Thu Aug 19 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 Grace near 20.0N 87.2W 986 mb at 5 AM EDT moving W at 15 kt. Maximum sustained winds 70 kt gusts 85 kt. Grace will move inland and weaken to a tropical storm near 20.3N 89.7W this afternoon, 20.6N 92.6W Fri morning, strengthen to a hurricane near 20.5N 95.0W Fri afternoon, move inland and weaken to a tropical storm near 20.1N 97.3W Sat morning, move inland and weaken to a tropical depression near 19.7N 100.1W Sat afternoon, and dissipate Sun morning. Otherwise, moderate to fresh trade winds will dominate elsewhere, except for locally fresh to strong winds in the Gulf of Honduras and south-central Caribbean through tonight. NW Caribbean W of 85W ...HURRICANE WARNING... .TODAY...HURRICANE CONDITIONS. S winds 55 to 65 kt, becoming SE 20 to 30 kt in the afternoon. Seas 9 to 14 ft. .TONIGHT...SE winds 15 to 25 kt. Seas 6 to 8 ft. .FRI...SE winds 15 to 25 kt. Seas 4 to 6 ft. .FRI NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. .SAT...E winds 10 to 20 kt. Seas 3 to 5 ft. .SAT NIGHT...E winds 15 to 25 kt. Seas 3 to 5 ft. .SUN...E winds 10 to 20 kt. Seas 3 to 5 ft. .SUN NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft. .MON...E winds 10 to 20 kt. Seas 3 to 5 ft. Caribbean N of 15N between 72W and 85W .TODAY...E winds 10 to 20 kt S of 18N, and E 20 to 30 kt elsewhere. Seas 5 to 7 ft. .TONIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. .FRI...E winds 10 to 20 kt. Seas 3 to 5 ft. .FRI NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft. .SAT...E winds 15 to 25 kt S of 18N, and E 10 to 20 kt elsewhere. Seas 3 to 5 ft. .SAT NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft. .SUN...E winds 10 to 20 kt. Seas 3 to 5 ft. .SUN NIGHT...E winds 20 to 30 kt S of 18N, and E 10 to 20 kt elsewhere. Seas 3 to 5 ft. .MON...E winds 20 to 30 kt S of 18N, and E 15 to 25 kt elsewhere. Seas 3 to 5 ft. Caribbean from 11N to 15N W of 72W .TODAY...E winds 15 to 25 kt. Seas 4 to 6 ft. .TONIGHT...E winds 15 to 25 kt. Seas 4 to 6 ft. .FRI...E winds 10 to 20 kt. Seas 4 to 6 ft. .FRI NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft. .SAT...E winds 10 to 20 kt. Seas 3 to 5 ft. .SAT NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft. .SUN...E winds 10 to 20 kt. Seas 4 to 6 ft. .SUN NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. .MON...E winds 10 to 20 kt. Seas 4 to 6 ft. SW Caribbean S of 11N .TODAY...NE winds 10 to 15 kt, shifting to SW in the afternoon. Seas 3 to 4 ft. .TONIGHT...W winds less than 10 kt. Seas 3 to 5 ft. .FRI...W winds less than 10 kt, shifting to SW in the afternoon. Seas 3 to 4 ft. .FRI NIGHT...SW winds less than 10 kt. Seas 3 to 4 ft. .SAT...S winds less than 10 kt. Seas 3 to 4 ft. .SAT NIGHT...SE winds less than 10 kt. Seas 3 ft. .SUN...E winds less than 10 kt. Seas 3 ft. .SUN NIGHT...N winds 10 to 15 kt. Seas 3 ft. .MON...N winds 10 to 15 kt. Seas 3 to 4 ft. Caribbean between 64W and 72W .TODAY...E winds 10 to 20 kt. Seas 3 ft Gulf of Venezuela, and 4 to 6 ft elsewhere. .TONIGHT...NE winds 15 to 25 kt Gulf of Venezuela, and E 10 to 20 kt elsewhere. Seas 4 to 6 ft. .FRI...E winds 10 to 20 kt. Gulf of Venezuela, seas 3 ft in the morning, subsiding to 2 ft or less. Elsewhere, seas 4 to 6 ft. .FRI NIGHT...E winds 10 to 20 kt. Gulf of Venezuela, seas 2 ft or less, building to 3 ft after midnight. Elsewhere, seas 4 to 6 ft. .SAT...E winds 10 to 20 kt. Seas 3 ft Gulf of Venezuela, and 4 to 6 ft elsewhere. .SAT NIGHT...E winds 10 to 20 kt. Seas 4 to 5 ft. .SUN...E winds 10 to 20 kt. Seas 3 ft Gulf of Venezuela, and 4 to 6 ft elsewhere. .SUN NIGHT...E winds 10 to 20 kt Gulf of Venezuela, and E 20 to 30 kt elsewhere. Seas 3 ft Gulf of Venezuela, and 4 to 6 ft elsewhere. .MON...E winds 10 to 20 kt Gulf of Venezuela, and E 20 to 30 kt elsewhere. 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 .TODAY...E winds 10 to 20 kt. Seas 4 to 6 ft. .TONIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. .FRI...E winds 10 to 20 kt. Seas 4 to 6 ft. .FRI NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. .SAT...E winds 10 to 20 kt. Seas 4 to 6 ft. .SAT NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. .SUN...E winds 10 to 20 kt. Seas 5 to 7 ft. .SUN NIGHT...E winds 15 to 25 kt. Seas 5 to 7 ft. .MON...E winds 15 to 25 kt. Seas 5 to 7 ft. Offshore Windward Islands and adjacent ATLC waters from 07N to 15N W of 55W .TODAY...E winds 10 to 20 kt. Seas 3 to 5 ft. .TONIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft. .FRI...E winds 10 to 20 kt. Seas 3 to 5 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. .SAT...E winds 10 to 20 kt. Seas 3 to 5 ft. .SAT NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft. .SUN...E winds 10 to 20 kt. Seas 4 to 6 ft. .SUN NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. .MON...E winds 10 to 20 kt. Seas 4 to 6 ft. Synopsis for the the SW N Atlantic including the Bahamas .SYNOPSIS...Tropical Storm Henri near 29.5N 69.5W 995 mb at 5 AM EDT moving W at 8 kt. Maximum sustained winds 60 kt gusts 75 kt. Henri will move to 29.5N 70.9W this afternoon, 29.9N 72.4W Fri morning, strengthen to a hurricane near 31.0N 73.0W Fri afternoon, 33.0N 72.5W Sat morning, 35.7N 71.4W Sat afternoon, and 38.2N 70.2W Sun morning. Henri will weaken to a tropical storm near 41.1N 69.3W early Mon. Otherwise, moderate to fresh E to SE winds will be predominant E and across the Bahamas Fri through Mon, except for fresh to strong winds at night N of Hispaniola and the approaches to the Windward Passage. ATLC waters from 27N to 31N W of 77W .TODAY...E winds less than 10 kt in the morning, becoming variable winds less than 10 kt. Seas 3 to 4 ft. .TONIGHT...NW winds less than 10 kt. Seas 3 to 5 ft. .FRI...W winds less than 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 6 to 9 ft. .FRI NIGHT...SW winds 10 to 20 kt. Seas 6 to 9 ft. .SAT...SW winds 10 to 20 kt. Seas 5 to 7 ft. .SAT NIGHT...S winds 10 to 20 kt. Seas 3 to 5 ft. .SUN...S winds 10 to 20 kt. Seas 3 to 4 ft. .SUN NIGHT...S winds 10 to 20 kt. Seas 3 to 4 ft. .MON...S winds 15 to 25 kt. Seas 4 to 6 ft. ATLC waters from 27N to 31N between 65W and 77W ...HURRICANE WARNING... .TODAY...TROPICAL STORM CONDITIONS. N winds 45 to 55 kt, shifting to SW in the afternoon. Seas 8 to 11 ft W of 70W, and 8 to 13 ft elsewhere. .TONIGHT...TROPICAL STORM CONDITIONS EXPECTED. NW winds 45 to 55 kt W of 70W, and S 20 to 30 kt elsewhere. Seas 8 to 13 ft W of 70W, and 6 to 9 ft elsewhere. .FRI...HURRICANE CONDITIONS EXPECTED. W winds 55 to 65 kt W of 70W, and S 15 to 25 kt elsewhere. Seas 9 to 14 ft W of 70W, and 5 to 7 ft elsewhere. .FRI NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. W of 70W, SW winds 45 to 55 kt, diminishing to 20 to 30 kt after midnight. Elsewhere, S winds 15 to 25 kt. Seas 7 to 10 ft W of 70W, and 5 to 7 ft elsewhere. .SAT...S winds 15 to 25 kt W of 70W, and S 10 to 20 kt elsewhere. Seas 5 to 7 ft. .SAT NIGHT...S winds 10 to 20 kt. Seas 4 to 5 ft. .SUN...S winds 10 to 20 kt. Seas 4 to 5 ft. .SUN NIGHT...S winds 10 to 20 kt. Seas 4 to 5 ft. .MON...S winds 15 to 25 kt W of 70W, and SE 10 to 15 kt elsewhere. Seas 4 to 5 ft. Bahamas N of 22N .TODAY...E winds 10 to 15 kt. Seas 2 ft or less, building to 3 ft in the afternoon. .TONIGHT...NE winds less than 10 kt, shifting to E after midnight. Seas 3 ft. .FRI...SE winds 10 to 15 kt. Seas 3 to 5 ft. .FRI NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft. .SAT...SE winds 10 to 20 kt. Seas 3 to 5 ft. .SAT NIGHT...E winds 10 to 20 kt. Seas 3 to 4 ft. .SUN...SE winds 10 to 20 kt. Seas 3 to 5 ft. .SUN NIGHT...E winds 10 to 20 kt. Seas 3 to 4 ft. .MON...SE winds 10 to 20 kt. Seas 3 to 5 ft. ATLC waters from 22N to 27N between 65W and the Bahamas .TODAY...SE winds 10 to 15 kt. Seas 3 to 5 ft. .TONIGHT...SE winds 10 to 20 kt. Seas 4 to 6 ft. .FRI...SE winds 10 to 20 kt. Seas 5 to 7 ft. .FRI NIGHT...SE winds 10 to 20 kt. Seas 5 to 6 ft. .SAT...SE winds 10 to 20 kt. Seas 5 to 6 ft. .SAT NIGHT...SE winds 10 to 20 kt. Seas 4 to 6 ft. .SUN...SE winds 10 to 20 kt. Seas 4 to 6 ft. .SUN NIGHT...E winds 10 to 20 kt. Seas 5 to 6 ft. .MON...E winds 10 to 20 kt. Seas 5 to 6 ft. ATLC waters S of 22N W of 65W .TODAY...E winds 10 to 20 kt. Seas 3 to 5 ft. .TONIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft. .FRI...E winds 10 to 20 kt. Seas 4 to 6 ft. .FRI NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. .SAT...E winds 15 to 25 kt. Seas 4 to 6 ft. .SAT NIGHT...E winds 15 to 25 kt. Seas 4 to 6 ft. .SUN...E winds 15 to 25 kt. Seas 5 to 7 ft. .SUN NIGHT...E winds 15 to 25 kt. Seas 5 to 7 ft. .MON...E winds 15 to 25 kt. Seas 5 to 7 ft. ATLC waters from 19N to 22N between 55W and 65W .TODAY...E winds 10 to 20 kt. Seas 4 to 6 ft. .TONIGHT...E winds 15 to 20 kt. Seas 5 to 6 ft. .FRI...E winds 15 to 20 kt. Seas 6 ft. .FRI NIGHT...E winds 15 to 20 kt. Seas 5 to 6 ft. .SAT...E winds 15 to 20 kt. Seas 5 to 6 ft. .SAT NIGHT...E winds 15 to 20 kt. Seas 6 to 7 ft. .SUN...E winds 15 to 20 kt. Seas 6 to 7 ft. .SUN NIGHT...E winds 10 to 20 kt. Seas 6 to 7 ft. .MON...E winds 10 to 20 kt. Seas 5 to 7 ft.