000 FZNT31 KNHC 140322 OFFN20 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 1122 PM EDT Tue Aug 13 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 18.8N 65.3W at 11 PM EDT, moving west-northwest at 15 kt. Maximum sustained winds are 55 kt with gusts to 65 kt, and the minimum central pressure is 998 mb. Ernesto will strengthen to a hurricane near 20.3N 66.7W Wed morning, reach near 22.4N 68.3W Wed evening, then turn northward and continue to gradually strengthen as it moves across the western Atlantic towards Bermuda. In its wake, high pressure will gradually build westward roughly along 20N late Fri into the weekend. NW Caribbean W of 85W .OVERNIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. .WED...E winds 10 to 15 kt. Seas 3 to 4 ft. .WED NIGHT...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 less than 10 kt. Seas 3 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 3 ft. .SAT...E winds 10 to 15 kt. Seas 3 ft. .SAT NIGHT...E winds 10 to 15 kt. Seas 2 ft or less. .SUN...E winds 10 to 15 kt. Seas 2 ft or less. Caribbean N of 15N between 72W and 85W .OVERNIGHT...E winds 10 to 15 kt S of 18N, and NE 15 to 25 kt elsewhere. Seas 3 to 5 ft. .WED...NE winds 10 to 20 kt. Seas 3 to 5 ft. .WED NIGHT...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 15 kt. S of 18N, seas 3 to 5 ft. Elsewhere, seas 3 ft in the evening, subsiding to 2 ft or less. .FRI...E winds 10 to 15 kt. Seas 3 to 5 ft S of 18N, and 2 ft or less elsewhere. .FRI NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft S of 18N, and 2 ft or less elsewhere. .SAT...E winds 10 to 15 kt. Seas 3 to 5 ft S of 18N, and 2 ft or less elsewhere. .SAT NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft S of 18N, and 2 ft or less elsewhere. .SUN...E winds 10 to 20 kt. Seas 3 to 5 ft S of 18N, and 2 ft or less elsewhere. Caribbean from 11N to 15N W of 72W .OVERNIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. .WED...Within 90 nm of coast of Colombia, E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Elsewhere, E winds 10 to 15 kt. Seas 4 to 5 ft. .WED NIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. .THU...E winds 10 to 15 kt. Seas 3 to 4 ft. .THU NIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft. .FRI...E winds 10 to 20 kt. Seas 4 to 6 ft. .FRI NIGHT...NE 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 3 to 5 ft. SW Caribbean S of 11N .OVERNIGHT...N winds less than 10 kt. Seas 3 to 5 ft. .WED...E winds less than 10 kt, shifting to S in the afternoon. Seas 3 to 5 ft. .WED NIGHT...N winds less than 10 kt. Seas 3 to 4 ft. .THU...W winds less than 10 kt in the morning, becoming variable winds less than 10 kt. Seas 3 to 4 ft. .THU NIGHT...N winds less than 10 kt. Seas 3 ft. .FRI...NW 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...NW winds less than 10 kt. Seas 3 ft. Caribbean between 64W and 72W .OVERNIGHT...NE winds 10 to 15 kt Gulf of Venezuela, and SE 20 to 30 kt elsewhere. Gulf of Venezuela, seas 3 ft, subsiding to 2 ft or less. Elsewhere, seas 4 to 6 ft. .WED...Gulf of Venezuela, N winds less than 10 kt, shifting to W in the afternoon. Elsewhere, SE winds 20 to 30 kt. Seas 2 ft or less Gulf of Venezuela, and 5 to 7 ft elsewhere. .WED NIGHT...SE winds 10 to 20 kt. Seas 2 ft or less Gulf of Venezuela, and 5 to 7 ft elsewhere. .THU...Gulf of Venezuela, E winds less than 10 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. Gulf of Venezuela, seas 2 ft or less, building to 3 to 4 ft after midnight. Elsewhere, seas 5 to 7 ft. .FRI...E winds 10 to 20 kt. Seas 3 to 4 ft Gulf of Venezuela, and 4 to 6 ft elsewhere. .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 Gulf of Venezuela, and 4 to 6 ft elsewhere. .SAT NIGHT...E winds 10 to 20 kt. Seas 2 ft or less Gulf of Venezuela, and 4 to 6 ft elsewhere. .SUN...E winds 10 to 20 kt Gulf of Venezuela, and E 15 to 25 kt elsewhere. Gulf of Venezuela, seas 3 ft in the morning, subsiding to 2 ft or less. Elsewhere, seas 4 to 6 ft. Offshore Leeward Islands and adjacent ATLC waters from 15N to 19N W of 55W ...TROPICAL STORM WARNING... .OVERNIGHT...TROPICAL STORM CONDITIONS POSSIBLE. SE winds 30 to 40 kt. Seas 7 to 10 ft. .WED...SE winds 20 to 30 kt. Seas 6 to 9 ft. .WED NIGHT...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 5 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 4 to 5 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 .OVERNIGHT...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...E winds 10 to 20 kt. Seas 3 to 5 ft. .THU...E winds 10 to 20 kt. Seas 3 to 5 ft. .THU NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft. .FRI...E winds 10 to 15 kt. Seas 3 to 5 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. .SAT...E winds 10 to 15 kt. Seas 3 to 4 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 and rather weak ridge extends from the central Atlantic W-SW to central Florida, and will shift E and weaken over the next few days. Tropical Storm Ernesto is near 18.8N 65.3W at 11 PM AST, moving west-northwest at 15 kt. Maximum sustained winds are 55 kt with gusts to 65 kt, and the minimum central pressure is 998 mb. Ernesto will strengthen to a hurricane near 20.3N 66.7W Wed morning, reach near 22.4N 68.3W Wed evening, and continue to gradually strengthen as it moves to near 26.3N 68.3W Thu evening, near 29.9N 66.2W Fri evening, then pass very near Bermuda Sat and reach near 34N 64.5W Sat evening. In its wake, high pressure will gradually build westward along 20N late Fri into the weekend. A weak frontal boundary will drop southward across the western part of the area beginning late Wed, and stall to the NW of Ernesto by Fri. ATLC waters from 27N to 31N W of 77W .OVERNIGHT...S winds 10 kt. Seas 3 to 4 ft. .WED...W winds less than 10 kt. Seas 3 ft. .WED NIGHT...NW winds 10 to 15 kt, shifting to E after midnight. Seas 3 ft. .THU...NE winds 10 to 20 kt. Seas 3 to 5 ft. .THU NIGHT...NE winds 10 to 20 kt. Seas 4 to 6 ft, building to 6 to 9 ft after midnight. .FRI...NE winds 10 to 15 kt. Seas 7 to 10 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...NE winds less than 10 kt, shifting to SE after midnight. Seas 5 to 7 ft. .SUN...SW winds 10 to 15 kt. Seas 5 to 7 ft. ATLC waters from 27N to 31N between 65W and 77W ...TROPICAL STORM WARNING... .OVERNIGHT...SW winds less than 10 kt W of 70W, and S 10 to 15 kt elsewhere. Seas 3 to 5 ft. .WED...W of 70W, SW winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Elsewhere, S winds 10 to 15 kt. Seas 3 to 5 ft. .WED NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. W of 70W, SW winds less than 10 kt, becoming S 10 to 20 kt after midnight,Seas 3 to 5 ft. Elsewhere, S winds 10 to 15 kt, increasing to 15 to 25 kt after midnight,Seas 4 to 6 ft, building to 6 to 9 ft after midnight. .THU...TROPICAL STORM CONDITIONS EXPECTED. W of 70W, NE winds 15 to 25 kt, seas 5 to 7 ft, building to 7 to 10 ft in the afternoon. Elsewhere, SE winds 20 to 30 kt, increasing to 30 to 40 kt in the afternoon,Seas 8 to 11 ft, building to 10 to 15 ft in the afternoon. .THU NIGHT...HURRICANE CONDITIONS POSSIBLE. W of 70W, NE winds 20 to 30 kt, seas 10 to 15 ft. Elsewhere, SE winds 50 to 60 kt, becoming E 85 to 95 kt after midnight,Seas 15 to 20 ft, building to 18 to 28 ft after midnight. .FRI...HURRICANE CONDITIONS POSSIBLE. .FRI NIGHT...HURRICANE CONDITIONS POSSIBLE. .SAT...HURRICANE CONDITIONS POSSIBLE. .SAT NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. .SUN...TROPICAL STORM CONDITIONS POSSIBLE. Bahamas N of 22N .OVERNIGHT...E winds 10 to 15 kt. Seas 3 ft. .WED...E winds 10 to 15 kt. Seas 3 ft. .WED NIGHT...NE winds 10 to 20 kt. Seas 3 to 4 ft. .THU...N winds 10 to 15 kt. Seas 4 to 6 ft. .THU NIGHT...N winds 10 to 15 kt, shifting to NW after midnight. Seas 4 to 6 ft. .FRI...W winds less than 10 kt, shifting to NW in the afternoon. Seas 4 to 6 ft. .FRI NIGHT...N 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 5 ft. .SUN...SE winds less than 10 kt. Seas 3 to 4 ft. ATLC waters from 22N to 27N between 65W and the Bahamas ...HURRICANE WARNING... .OVERNIGHT...TROPICAL STORM CONDITIONS POSSIBLE. E winds 10 to 20 kt W of 70W, and E 15 to 25 kt elsewhere. Seas 4 to 6 ft W of 70W, and 6 to 9 ft elsewhere. .WED...TROPICAL STORM CONDITIONS EXPECTED. W of 70W, E winds 15 to 25 kt, seas 4 to 6 ft. Elsewhere, E winds 20 to 30 kt, increasing to 40 to 50 kt in the afternoon,Seas 7 to 10 ft, building to 10 to 15 ft in the afternoon. .WED NIGHT...TROPICAL STORM CONDITIONS EXPECTED. W of 70W, NE winds 20 to 30 kt, seas 6 to 9 ft, building to 8 to 13 ft after midnight. Elsewhere, E winds 65 to 75 kt, becoming SE 75 to 85 kt after midnight,Seas 14 to 19 ft, building to 17 to 22 ft after midnight. .THU...HURRICANE CONDITIONS EXPECTED. W of 70W, N winds 25 to 35 kt. Elsewhere, SE winds 65 to 85 kt, becoming S 80 to 90 kt in the afternoon. Seas 10 to 15 ft W of 70W, and 17 to 27 ft elsewhere. .THU NIGHT...HURRICANE CONDITIONS POSSIBLE. W of 70W, NW winds 25 to 35 kt, diminishing to 15 to 25 kt after midnight. Elsewhere, SW winds 80 to 95 kt. Seas 12 to 17 ft W of 70W, and 17 to 27 ft elsewhere. .FRI...HURRICANE CONDITIONS POSSIBLE. .FRI NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. .SAT...W winds 10 to 15 kt W of 70W, and SW 20 to 30 kt elsewhere. W of 70W, seas 6 to 9 ft. Elsewhere, seas 9 to 14 ft, subsiding to 8 to 11 ft in the afternoon. .SAT NIGHT...W of 70W, W winds 10 to 15 kt, shifting to SW after midnight. Elsewhere, SW winds 15 to 25 kt. Seas 7 to 10 ft. .SUN...S winds 10 to 20 kt. Seas 6 to 8 ft. ATLC waters S of 22N W of 65W ...HURRICANE WARNING... .OVERNIGHT...TROPICAL STORM CONDITIONS. NE winds 35 to 45 kt, increasing to 45 to 55 kt after midnight. Seas 7 to 10 ft. .WED...TROPICAL STORM CONDITIONS EXPECTED. NE winds 55 to 70 kt. Seas 12 to 17 ft. .WED NIGHT...TROPICAL STORM CONDITIONS EXPECTED. NW winds 65 to 75 kt, becoming SW 30 to 40 kt after midnight. Seas 11 to 16 ft, subsiding to 8 to 13 ft after midnight. .THU...TROPICAL STORM CONDITIONS POSSIBLE. SW winds 20 to 30 kt. Seas 8 to 11 ft. .THU NIGHT...S winds 10 to 20 kt. Seas 6 to 9 ft. .FRI...S winds 10 to 20 kt. Seas 5 to 7 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...SE winds 10 to 15 kt. Seas 4 to 6 ft. .SUN...SE winds 10 to 15 kt. Seas 3 to 5 ft. ATLC waters from 19N to 22N between 55W and 65W ...TROPICAL STORM WARNING... .OVERNIGHT...TROPICAL STORM CONDITIONS. SE winds 35 to 45 kt. Seas 8 to 13 ft. .WED...TROPICAL STORM CONDITIONS EXPECTED. SE winds 35 to 45 kt, diminishing to 25 to 35 kt in the afternoon. Seas 8 to 13 ft. .WED NIGHT...SE 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 20 kt. Seas 5 to 7 ft. .FRI...SE winds 10 to 20 kt. Seas 4 to 6 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...E winds 10 to 15 kt. Seas 4 to 6 ft. .SUN...E winds 10 to 15 kt. Seas 5 to 6 ft.