000 FZNT31 KNHC 140930 OFFN20 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 530 AM EDT Wed Aug 14 2024 Marine Weather HF Voice Broadcast for the Tropical N Atlantic from 07N to 19N W of 55W, the N Atlantic from 19N to 31N W of 55W including the 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 W of 55W .SYNOPSIS...Tropical Storm Ernesto is near 19.5N 66.6W at 5 AM AST, moving west-northwest at 14 kt. Maximum sustained winds are 60 kt with gusts to 75 kt, and the minimum central pressure is 996 mb. Ernesto will move NW and strengthen to a hurricane near 21.1N 67.8W this afternoon, reach near 23.6N 68.9W Wed night, then turn northward and continue to gradually strengthen as it moves across the western Atlantic, reaching near Bermuda Sat morning. In its wake, high pressure will gradually build westward along 21N late Fri into the weekend, bringing a return to a more typical trade wind flow across the basin. NW Caribbean W of 85W .TODAY...E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 3 to 4 ft. .TONIGHT...NE winds 10 to 15 kt. Seas 3 ft. .THU...E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 3 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 3 ft. .FRI...E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 3 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 2 ft or less, building to 3 ft after midnight. .SAT...E winds less than 10 kt. Seas 3 ft in the morning, subsiding to 2 ft or less. .SAT NIGHT...E winds 10 to 15 kt. Seas 2 ft or less, building to 3 ft after midnight. .SUN...E winds 10 to 15 kt. Seas 3 ft. Caribbean N of 15N between 72W and 85W .TODAY...NE winds 10 to 20 kt. Seas 3 to 5 ft. .TONIGHT...NE winds 10 to 20 kt. Seas 3 to 4 ft. .THU...E winds 10 to 15 kt. Seas 3 to 4 ft. .THU NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft S of 18N, and 2 ft or less elsewhere. .FRI...E winds 10 to 20 kt. Seas 3 to 5 ft S of 18N, and 2 ft or less elsewhere. .FRI NIGHT...S of 18N, E winds 10 to 20 kt. Elsewhere, E winds 10 to 15 kt, diminishing to less than 10 kt after midnight. Seas 3 to 5 ft S of 18N, and 2 ft or less elsewhere. .SAT...E winds 10 to 20 kt. Seas 3 to 5 ft S of 18N, and 2 ft or less elsewhere. .SAT NIGHT...S of 18N, E winds 10 to 20 kt. Elsewhere, E winds 10 to 15 kt, diminishing to less than 10 kt after midnight. Seas 3 to 5 ft S of 18N, and 2 ft or less elsewhere. .SUN...S of 18N, E winds 10 to 20 kt. Elsewhere, E winds less than 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 3 to 5 ft S of 18N, and 2 ft or less elsewhere. Caribbean from 11N to 15N W of 72W .TODAY...NE winds 10 to 15 kt. Seas 3 to 5 ft. .TONIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. .THU...NE winds 10 to 15 kt. Seas 3 to 4 ft. .THU NIGHT...NE winds 10 to 20 kt. Seas 3 to 5 ft. .FRI...E winds 10 to 20 kt. Seas 4 to 6 ft. .FRI NIGHT...NE winds 15 to 25 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 3 to 5 ft. SW Caribbean S of 11N .TODAY...NE winds 10 to 15 kt. Seas 3 to 5 ft. .TONIGHT...NE winds less than 10 kt. Seas 3 to 4 ft. .THU...N winds less than 10 kt. Seas 3 ft. .THU NIGHT...N winds less than 10 kt. Seas 3 ft. .FRI...N winds less than 10 kt in the morning, becoming variable winds less than 10 kt. Seas 3 ft. .FRI NIGHT...NW winds less than 10 kt. Seas 3 ft. .SAT...W winds less than 10 kt. Seas 3 to 4 ft. .SAT NIGHT...NW winds less than 10 kt. Seas 3 to 4 ft. .SUN...W winds less than 10 kt. Seas 3 to 4 ft. Caribbean between 64W and 72W .TODAY...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 5 to 7 ft elsewhere. .TONIGHT...SE winds 10 to 20 kt. Seas 2 ft or less Gulf of Venezuela, and 4 to 6 ft elsewhere. .THU...Gulf of Venezuela, E winds 10 to 15 kt, shifting to SW in the afternoon. Elsewhere, SE winds 10 to 20 kt. Seas 2 ft or less Gulf of Venezuela, and 5 to 7 ft elsewhere. .THU NIGHT...NE winds 10 to 20 kt Gulf of Venezuela, and E 15 to 25 kt elsewhere. Seas 3 to 5 ft Gulf of Venezuela, and 4 to 6 ft elsewhere. .FRI...E winds 10 to 20 kt Gulf of Venezuela, and E 15 to 25 kt elsewhere. Seas 3 to 5 ft Gulf of Venezuela, and 5 to 7 ft elsewhere. .FRI NIGHT...Gulf of Venezuela, NE winds 10 to 20 kt, shifting to E 20 to 25 kt after midnight. Elsewhere, E winds 15 to 25 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 4 to 5 ft. .SUN...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 .TODAY...E winds 20 to 30 kt. Seas 6 to 9 ft. .TONIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. .THU...E winds 10 to 20 kt. Seas 4 to 6 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .FRI...E winds 10 to 15 kt. Seas 4 to 6 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .SAT...E winds 10 to 15 kt. Seas 4 to 5 ft. .SAT NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. .SUN...E winds 10 to 15 kt. Seas 3 to 5 ft. Offshore Windward Islands and adjacent ATLC waters from 07N to 15N 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. .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 15 kt. Seas 4 to 6 ft. .FRI NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft. .SAT...E winds 10 to 15 kt. Seas 3 to 5 ft. .SAT NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. .SUN...E winds 10 to 20 kt. Seas 3 to 4 ft. Synopsis for the the SW N Atlantic including the Bahamas .SYNOPSIS...A broad ridge extends from the central Atlantic W-SW to central Florida, and will shift E and weaken through Thu. Tropical Storm Ernesto is near 19.5N 66.6W at 5 AM AST, moving west-northwest at 14 kt. Maximum sustained winds are 60 kt with gusts to 75 kt, and the minimum central pressure is 996 mb. Ernesto will move NW and strengthen to a hurricane near 21.1N 67.8W this afternoon, reach near 23.6N 68.9W Wed night, then turn northward and continue to gradually strengthen, reaching near 25.7N 68.8W Thu afternoon, near 29.5N 66.2W Fri afternoon, then reach near Bermuda Sat morning. In its wake, high pressure will gradually build westward along 21N late Fri into the weekend. A weak frontal boundary will drop southward across the northwestern part of the area beginning late Wed, and stall to the NW of Ernesto by Fri, producing moderate to fresh NE winds behind it. Large swell from Ernesto will spread W of 75W early Fri through Sat morning. ATLC waters from 27N to 31N W of 77W .TODAY...W winds 10 to 15 kt. Seas 3 to 4 ft. .TONIGHT...NE winds 10 to 20 kt. Seas 3 to 5 ft. .THU...NE winds 10 to 20 kt. Seas 4 to 6 ft. .THU NIGHT...NE winds 10 to 20 kt. Seas 5 to 7 ft, building to 7 to 10 ft after midnight. .FRI...NE winds 10 to 15 kt. Seas 8 to 11 ft. .FRI NIGHT...NE winds 10 to 15 kt. Seas 7 to 10 ft. .SAT...NE winds less than 10 kt. Seas 6 to 8 ft. .SAT NIGHT...E winds less than 10 kt, shifting to S after midnight. Seas 5 to 7 ft. .SUN...SW winds 10 to 15 kt. Seas 5 to 6 ft. ATLC waters from 27N to 31N between 65W and 77W ...HURRICANE WARNING... .TODAY...SW winds 10 to 20 kt. Seas 4 to 6 ft. .TONIGHT...TROPICAL STORM CONDITIONS POSSIBLE. W of 70W, SW winds 10 to 20 kt, seas 4 to 6 ft. Elsewhere, S winds 10 to 15 kt, increasing to 20 to 30 kt after midnight,Seas 5 to 6 ft, building to 6 to 9 ft after midnight. .THU...TROPICAL STORM CONDITIONS EXPECTED. W of 70W, NE winds 20 to 30 kt, seas 6 to 8 ft, building to 8 to 11 ft in the afternoon. Elsewhere, SE winds 20 to 30 kt, increasing to 30 to 40 kt in the afternoon,Seas 8 to 13 ft, building to 11 to 16 ft in the afternoon. .THU NIGHT...HURRICANE CONDITIONS EXPECTED. W of 70W, N winds 20 to 30 kt, seas 10 to 15 ft. Elsewhere, E winds 70 to 80 kt, increasing to 80 to 100 kt after midnight,Seas 16 to 21 ft, building to 18 to 28 ft after midnight. .FRI...HURRICANE CONDITIONS POSSIBLE. N winds 15 to 25 kt W of 70W, and N 80 to 100 kt elsewhere. Seas 11 to 16 ft W of 70W, and 20 to 30 ft elsewhere. .FRI NIGHT...HURRICANE CONDITIONS POSSIBLE. .SAT...HURRICANE CONDITIONS POSSIBLE. .SAT NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. .SUN...W of 70W, W winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Elsewhere, SW winds 10 to 20 kt. Seas 6 to 8 ft W of 70W, and 8 to 11 ft elsewhere. Bahamas N of 22N .TODAY...E winds 10 to 15 kt. Seas 3 ft. .TONIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. .THU...NW winds less than 10 kt. Seas 4 to 6 ft. .THU NIGHT...NW winds less than 10 kt, shifting to N after midnight. Seas 4 to 6 ft. .FRI...W winds 10 to 15 kt. Seas 4 to 6 ft. .FRI NIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft. .SAT...NW winds less than 10 kt. Seas 3 to 5 ft. .SAT NIGHT...N winds less than 10 kt, shifting to SE after midnight. Seas 3 to 4 ft. .SUN...S winds less than 10 kt. Seas 3 to 4 ft. ATLC waters from 22N to 27N between 65W and the Bahamas ...HURRICANE WARNING... .TODAY...TROPICAL STORM CONDITIONS. W of 70W, E winds 15 to 25 kt, seas 5 to 7 ft. Elsewhere, E winds 20 to 30 kt, increasing to 35 to 45 kt in the afternoon,Seas 7 to 10 ft, building to 10 to 15 ft in the afternoon. .TONIGHT...HURRICANE CONDITIONS EXPECTED. NE winds 20 to 30 kt W of 70W, and SE 65 to 80 kt elsewhere. W of 70W, seas 7 to 10 ft, building to 8 to 13 ft after midnight. Elsewhere, seas 15 to 20 ft. .THU...HURRICANE CONDITIONS EXPECTED. NW winds 30 to 40 kt W of 70W, and S 80 to 90 kt elsewhere. Seas 11 to 16 ft W of 70W, and 17 to 27 ft elsewhere. .THU NIGHT...HURRICANE CONDITIONS EXPECTED. NW winds 25 to 35 kt W of 70W, and SW 75 to 95 kt elsewhere. W of 70W, seas 12 to 17 ft. Elsewhere, seas 16 to 26 ft, subsiding to 16 to 21 ft after midnight. .FRI...TROPICAL STORM CONDITIONS POSSIBLE. W of 70W, W winds 15 to 25 kt. Elsewhere, SW winds 45 to 55 kt, diminishing to 25 to 35 kt in the afternoon. Seas 9 to 14 ft W of 70W, and 12 to 17 ft elsewhere. .FRI NIGHT...W of 70W, NW winds 10 to 15 kt, diminishing to less than 10 kt after midnight. Elsewhere, SW winds 15 to 25 kt. Seas 8 to 12 ft W of 70W, and 10 to 15 ft elsewhere. .SAT...NW winds less than 10 kt W of 70W, and SW 10 to 20 kt elsewhere. W of 70W, seas 7 to 10 ft. Elsewhere, seas 8 to 13 ft, subsiding to 6 to 9 ft in the afternoon. .SAT NIGHT...SW winds less than 10 kt W of 70W, and SW 10 to 20 kt elsewhere. Seas 6 to 8 ft. .SUN...S winds less than 10 kt W of 70W, and S 10 to 15 kt elsewhere. Seas 5 to 7 ft. ATLC waters S of 22N W of 65W ...HURRICANE WARNING... .TODAY...TROPICAL STORM CONDITIONS. NE winds 50 to 60 kt, increasing to 60 to 70 kt in the afternoon. Seas 11 to 16 ft. .TONIGHT...TROPICAL STORM CONDITIONS EXPECTED. W winds 60 to 70 kt, becoming SW 30 to 40 kt after midnight. Seas 9 to 14 ft. .THU...SW winds 20 to 30 kt. Seas 8 to 11 ft. .THU NIGHT...S winds 10 to 15 kt. Seas 6 to 8 ft. .FRI...S winds 10 to 15 kt. Seas 6 to 8 ft. .FRI NIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft. .SAT...SE winds 10 to 15 kt. Seas 4 to 6 ft. .SAT NIGHT...SE winds 10 to 15 kt. Seas 3 to 5 ft. .SUN...SE winds 10 to 20 kt. Seas 3 to 5 ft. ATLC waters from 19N to 22N between 55W and 65W ...TROPICAL STORM WARNING... .TODAY...TROPICAL STORM CONDITIONS POSSIBLE. SE winds 25 to 35 kt. Seas 8 to 13 ft. .TONIGHT...E winds 20 to 30 kt. Seas 7 to 10 ft. .THU...SE winds 15 to 25 kt. Seas 6 to 9 ft. .THU NIGHT...SE winds 10 to 15 kt. Seas 5 to 7 ft. .FRI...SE winds 10 to 15 kt. Seas 5 to 6 ft. .FRI NIGHT...SE winds 10 to 15 kt. Seas 5 to 7 ft. .SAT...SE winds 10 to 15 kt. Seas 4 to 6 ft. .SAT NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .SUN...E winds 10 to 15 kt. Seas 5 to 6 ft.