000 FZNT31 KNHC 030918 OFFN20 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 518 AM EDT Mon Aug 3 2020 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...A surface trough moving across the Atlantic waters along 63W will increase winds and seas slightly over the Tropical N Atlantic waters N of 15N and E of 66W today. Fresh trade winds over the central Caribbean waters are expected to strengthen by midweek following the passage of a tropical wave. NW Caribbean W of 85W .TODAY...SE winds less than 10 kt. Seas 3 ft in the morning, subsiding to 2 ft or less. .TONIGHT...E winds less than 10 kt. Seas 2 ft or less. .TUE...E winds less than 10 kt. Seas 2 ft or less. .TUE NIGHT...E winds 10 to 15 kt. Seas 2 ft or less, building to 3 ft after midnight. .WED...E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 3 ft. .WED NIGHT...E winds 10 to 20 kt. Seas 3 to 4 ft. .THU...E winds 10 to 20 kt. Seas 4 to 6 ft. .THU NIGHT...E winds 15 to 25 kt. Seas 4 to 6 ft. .FRI...E winds 10 to 20 kt. Seas 4 to 6 ft. Caribbean N of 15N between 72W and 85W .TODAY...E winds 10 to 20 kt. Seas 3 to 5 ft. .TONIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft S of 18N, and 2 ft or less elsewhere. .TUE...E winds 15 to 25 kt S of 18N, and E 10 to 20 kt elsewhere. Seas 5 to 7 ft S of 18N, and 3 ft elsewhere. .TUE NIGHT...E winds 15 to 25 kt S of 18N, and E 10 to 20 kt elsewhere. Seas 5 to 7 ft S of 18N, and 3 to 5 ft elsewhere. .WED...E winds 15 to 25 kt S of 18N, and E 10 to 20 kt elsewhere. Seas 6 to 8 ft S of 18N, and 3 to 5 ft elsewhere. .WED NIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft S of 18N, and 3 to 5 ft elsewhere. .THU...E winds 10 to 20 kt. Seas 5 to 7 ft. .THU NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. .FRI...E winds 10 to 20 kt. Seas 6 to 8 ft S of 18N, and 3 to 5 ft elsewhere. Caribbean from 11N to 15N W of 72W .TODAY...E winds 10 to 20 kt. Seas 4 to 6 ft. .TONIGHT...NE winds 10 to 20 kt. Seas 5 to 7 ft. .TUE...E winds 10 to 20 kt within 90 nm of coast of Colombia, and E 15 to 25 kt elsewhere. Seas 5 to 7 ft. .TUE NIGHT...NE winds 15 to 25 kt. Seas 6 to 8 ft. .WED...E winds 15 to 25 kt. Seas 6 to 8 ft. .WED NIGHT...E winds 15 to 25 kt. Seas 6 to 8 ft. .THU...E winds 15 to 25 kt. Seas 6 to 9 ft. .THU NIGHT...E winds 15 to 25 kt. Seas 6 to 8 ft. .FRI...E winds 15 to 25 kt. Seas 6 to 8 ft. SW Caribbean S of 11N .TODAY...NE winds 10 to 20 kt. Seas 3 to 5 ft. .TONIGHT...N winds 10 to 15 kt. Seas 3 to 5 ft. .TUE...NE winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 3 to 4 ft. .TUE NIGHT...NW winds less than 10 kt. Seas 3 to 4 ft. .WED...N winds 10 to 15 kt, shifting to SW in the afternoon. Seas 3 to 4 ft. .WED NIGHT...SW winds less than 10 kt. Seas 3 to 5 ft. .THU...S winds less than 10 kt. Seas 3 to 5 ft. .THU NIGHT...NE winds less than 10 kt. Seas 4 to 6 ft. .FRI...E winds less than 10 kt, shifting to N in the afternoon. Seas 3 to 5 ft. Caribbean between 64W and 72W .TODAY...SE winds 10 to 20 kt Gulf of Venezuela, and SE 15 to 25 kt elsewhere. Seas 3 to 4 ft Gulf of Venezuela, and 5 to 7 ft elsewhere. .TONIGHT...NE winds 10 to 20 kt Gulf of Venezuela, and E 15 to 25 kt elsewhere. Seas 3 to 4 ft Gulf of Venezuela, and 5 to 7 ft elsewhere. .TUE...Gulf of Venezuela, SE winds 10 to 20 kt, becoming S less than 10 kt in the afternoon. Elsewhere, E winds 15 to 25 kt. Seas 3 to 4 ft Gulf of Venezuela, and 5 to 7 ft elsewhere. .TUE NIGHT...Gulf of Venezuela, NE winds 10 to 15 kt, shifting to E 15 to 25 kt after midnight. Elsewhere, E winds 15 to 25 kt. Seas 3 to 5 ft Gulf of Venezuela, and 5 to 7 ft elsewhere. .WED...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. .WED 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 5 to 7 ft. .THU...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. .THU NIGHT...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...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. 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 15 kt. Seas 4 to 6 ft. .TUE...E winds 10 to 15 kt. Seas 4 to 6 ft. .TUE NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. .WED...E winds 10 to 15 kt. Seas 3 to 5 ft. .WED NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. .THU...E winds 10 to 15 kt. Seas 3 to 5 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 .TODAY...E winds 10 to 15 kt. Seas 4 to 5 ft. .TONIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .TUE...E winds 10 to 15 kt. Seas 4 to 6 ft. .TUE NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .WED...E winds 10 to 15 kt. Seas 3 to 5 ft. .WED NIGHT...E winds 10 to 15 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 4 to 6 ft. .FRI...E winds 10 to 20 kt. Seas 4 to 6 ft. Synopsis for the the SW N Atlantic including the Bahamas .SYNOPSIS...Tropical Storm Isaias is offshore of NE Florida near 29.6N 79.9W 994 mb at 5 AM EDT, moving N at 8 kt. Maximum sustained winds 60 kt gusts 75 kt. Isaias will continue northward and near the east coast of Florida today and reach near 31.3N 79.6W at hurricane intensity this afternoon, then accelerate N-NE away from the forecast waters. Large seas associated with Isaias will spread northward across the waters W of 75W today, then gradually subside late tonight through Tue night. A low pressure trough associated with a tropical wave along 63W will move across the SE waters today. Environmental conditions are conducive for development during the next few days as this system moves northwestward, and a tropical depression could form by the middle of the week. ATLC waters from 27N to 31N W of 77W ...TROPICAL STORM WARNING... .TODAY...TROPICAL STORM CONDITIONS. S winds 50 to 60 kt. Seas 13 to 18 ft. .TONIGHT...TROPICAL STORM CONDITIONS EXPECTED. S winds 25 to 35 kt. Seas 8 to 13 ft, subsiding to 7 to 10 ft after midnight. .TUE...S winds 15 to 25 kt, diminishing to 10 to 15 kt in the afternoon. Seas 6 to 9 ft. .TUE NIGHT...S winds 10 to 15 kt. Seas 5 to 7 ft. .WED...S winds 10 to 15 kt. Seas 4 to 5 ft. .WED NIGHT...S winds 10 to 15 kt. Seas 4 to 5 ft. .THU...S winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 3 to 5 ft. .THU NIGHT...S winds 10 to 15 kt. Seas 3 to 4 ft. .FRI...S winds less than 10 kt. Seas 3 to 4 ft. ATLC waters from 27N to 31N between 65W and 77W .TODAY...SE winds 20 to 30 kt W of 70W, and E 10 to 20 kt elsewhere. Seas 6 to 9 ft W of 70W, and 4 to 6 ft elsewhere. .TONIGHT...SE winds 20 to 30 kt W of 70W, and E 15 to 25 kt elsewhere. Seas 6 to 8 ft. .TUE...W of 70W, SE winds 15 to 25 kt, shifting to S 10 to 15 kt in the afternoon. Elsewhere, SE winds 10 to 20 kt. Seas 5 to 7 ft. .TUE NIGHT...S winds 10 to 15 kt. Seas 5 to 6 ft. .WED...W of 70W, S winds 10 to 15 kt. Elsewhere, S winds 10 to 15 kt, shifting to SW in the afternoon. Seas 4 to 6 ft. .WED NIGHT...W of 70W, SE winds less than 10 kt, shifting to E after midnight. Elsewhere, NE winds 10 to 15 kt. Seas 4 to 5 ft. .THU...E winds 10 to 15 kt. Seas 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. Bahamas N of 22N .TODAY...SE winds 15 to 25 kt. Seas 3 to 5 ft. .TONIGHT...SE winds 10 to 15 kt. Seas 3 to 5 ft. .TUE...SE winds 10 to 20 kt. Seas 3 to 4 ft. .TUE NIGHT...SE winds 10 to 15 kt. Seas 3 to 5 ft. .WED...SE winds 10 to 20 kt. Seas 3 to 5 ft. .WED NIGHT...SE winds 10 to 20 kt. Seas 3 to 4 ft. .THU...SE winds 10 to 20 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 from 22N to 27N between 65W and the Bahamas .TODAY...SE winds 15 to 25 kt W of 70W, and E 10 to 20 kt elsewhere. Seas 6 to 7 ft. .TONIGHT...SE winds 10 to 15 kt W of 70W, and SE 15 to 25 kt elsewhere. Seas 5 to 7 ft. .TUE...SE winds 10 to 15 kt. Seas 5 to 6 ft. .TUE NIGHT...SE winds 10 to 15 kt. Seas 5 to 6 ft. .WED...SE winds 10 to 15 kt. Seas 4 to 6 ft. .WED NIGHT...W of 70W, E winds 10 to 15 kt. Elsewhere, NE winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 4 to 5 ft. .THU...E winds 10 to 15 kt W of 70W, and E less than 10 kt elsewhere. Seas 4 ft. .THU NIGHT...NE winds 10 to 15 kt W of 70W, and SE less than 10 kt elsewhere. Seas 3 to 4 ft. .FRI...SE winds less than 10 kt. Seas 3 to 4 ft. ATLC waters S of 22N W of 65W .TODAY...SE winds 10 to 15 kt. Seas 4 to 6 ft. .TONIGHT...SE winds 10 to 20 kt. Seas 4 to 6 ft. .TUE...SE winds 10 to 20 kt. Seas 4 to 6 ft. .TUE NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft. .WED...E winds 15 to 25 kt. Seas 3 to 5 ft. .WED NIGHT...E winds 15 to 25 kt. Seas 3 to 5 ft. .THU...E winds 10 to 20 kt. Seas 4 to 5 ft. .THU NIGHT...E winds 10 to 20 kt. Seas 4 to 5 ft. .FRI...E winds 10 to 20 kt. Seas 4 to 5 ft. ATLC waters from 19N to 22N between 55W and 65W .TODAY...SE winds 10 to 20 kt. Seas 6 to 7 ft. .TONIGHT...E winds 10 to 15 kt. Seas 6 ft. .TUE...E winds 10 to 15 kt. Seas 5 to 6 ft. .TUE NIGHT...E winds 10 to 15 kt. Seas 5 to 6 ft. .WED...E winds 10 to 15 kt. Seas 4 to 5 ft. .WED NIGHT...E winds 10 to 15 kt. Seas 4 to 5 ft. .THU...SE winds 10 to 15 kt. Seas 4 to 5 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 4 to 5 ft. .FRI...E winds 10 to 15 kt. Seas 4 to 5 ft.