000 FZNT31 KNHC 282109 OFFN20 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 509 PM EDT Mon Aug 28 2023 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 Idalia is near 21.4N 85.1W at 5 PM EDT, and is moving north at 7 kt. Maximum sustained winds are 60 kt with gusts to 75 kt, and the minimum central pressure is 987 mb. Idalia will strengthen to a hurricane over the Gulf of Mexico near 22.7N 85.2W Tue morning. As Idalia moves farther N into the Gulf of Mexico on Tue, conditions will improve in the NW Caribbean. High pressure will build westward across the western Atlantic through Thu as Hurricane Franklin lifts north of the region. This will lead to moderate to fresh trade winds in the eastern Caribbean by tonight, then in the central Caribbean by Tue, locally strong there. NW Caribbean W of 85W ...TROPICAL STORM WARNING... .TONIGHT...TROPICAL STORM CONDITIONS. SW winds 45 to 55 kt. Seas 5 to 7 ft. .TUE...TROPICAL STORM CONDITIONS POSSIBLE. SW winds 20 to 30 kt. Seas 4 to 6 ft. .TUE NIGHT...SE winds 15 to 25 kt. Seas 3 to 5 ft. .WED...S winds 10 to 20 kt. Seas 3 to 4 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...SE winds 10 to 20 kt. Seas 3 to 4 ft. .FRI...E winds 10 to 20 kt. Seas 3 to 4 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. Caribbean N of 15N between 72W and 85W ...TROPICAL STORM WARNING... .TONIGHT...TROPICAL STORM CONDITIONS. S of 18N, SE winds 10 to 20 kt. Elsewhere, S winds 45 to 55 kt, diminishing to 30 to 40 kt after midnight. Seas 3 to 4 ft S of 18N, and 6 to 9 ft elsewhere. .TUE...TROPICAL STORM CONDITIONS POSSIBLE. SE winds 10 to 20 kt S of 18N, and S 20 to 30 kt elsewhere. Seas 4 to 6 ft. .TUE NIGHT...E winds 15 to 25 kt S of 18N, and SE 15 to 25 kt elsewhere. Seas 3 to 5 ft. .WED...SE winds 10 to 20 kt. Seas 4 to 6 ft. .WED NIGHT...E winds 15 to 25 kt S of 18N, and SE 15 to 25 kt elsewhere. Seas 4 to 6 ft. .THU...E winds 15 to 25 kt S of 18N, and SE 10 to 20 kt elsewhere. Seas 4 to 6 ft. .THU NIGHT...E winds 15 to 25 kt S of 18N, and E 10 to 20 kt elsewhere. Seas 4 to 6 ft. .FRI...E winds 10 to 20 kt. Seas 5 to 7 ft S of 18N, and 3 to 4 ft elsewhere. .FRI NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft S of 18N, and 3 to 4 ft elsewhere. .SAT...E winds 10 to 20 kt. Seas 4 to 6 ft. Caribbean from 11N to 15N W of 72W .TONIGHT...E winds 10 to 20 kt. Seas 2 ft or less, building to 3 ft after midnight. .TUE...E winds 15 to 25 kt. Seas 3 to 4 ft. .TUE NIGHT...E winds 15 to 25 kt. Seas 3 to 5 ft. .WED...E winds 15 to 25 kt. Seas 7 to 8 ft within 90 nm of coast of Colombia, and 4 to 6 ft elsewhere. .WED NIGHT...E winds 15 to 25 kt within 90 nm of coast of Colombia, and E 20 to 30 kt elsewhere. Seas 6 to 8 ft within 90 nm of coast of Colombia, and 4 to 6 ft elsewhere. .THU...E winds 15 to 25 kt. Seas 5 to 7 ft. .THU NIGHT...E winds 15 to 25 kt. Seas 5 to 7 ft. .FRI...E winds 15 to 25 kt. Seas 5 to 7 ft. .FRI NIGHT...NE winds 15 to 25 kt within 90 nm of coast of Colombia, and E 15 to 25 kt elsewhere. Seas 5 to 7 ft. .SAT...E winds 10 to 20 kt. Seas 4 to 6 ft. SW Caribbean S of 11N .TONIGHT...N winds less than 10 kt in the evening, becoming variable winds less than 10 kt. Seas 2 ft or less. .TUE...SE winds less than 10 kt. Seas 2 ft or less. .TUE NIGHT...NE winds less than 10 kt. Seas 2 ft or less. .WED...N winds 10 to 15 kt. Seas 2 ft or less, building to 3 ft in the afternoon. .WED NIGHT...NW winds less than 10 kt, shifting to N after midnight. Seas 3 to 4 ft. .THU...NW winds 10 to 15 kt. Seas 3 to 5 ft. .THU NIGHT...NW winds less than 10 kt, increasing to 15 to 25 kt after midnight. Seas 3 to 5 ft. .FRI...S winds 15 to 25 kt. Seas 3 to 5 ft. .FRI NIGHT...N winds 10 to 15 kt, diminishing to less than 10 kt after midnight. Seas 3 to 5 ft. .SAT...N winds less than 10 kt. Seas 3 to 5 ft. Caribbean between 64W and 72W .TONIGHT...E winds 10 to 20 kt. Gulf of Venezuela, seas 2 ft or less, building to 3 to 4 ft after midnight. Elsewhere, seas 4 to 6 ft. .TUE...E winds 10 to 20 kt Gulf of Venezuela, and E 15 to 25 kt elsewhere. Seas 3 to 4 ft Gulf of Venezuela, and 4 to 6 ft elsewhere. .TUE NIGHT...E winds 20 to 30 kt Gulf of Venezuela, and E 15 to 25 kt elsewhere. Seas 4 to 6 ft. .WED...E winds 15 to 25 kt. Seas 4 to 6 ft. .WED NIGHT...E winds 15 to 25 kt. Seas 5 to 7 ft. .THU...E winds 15 to 25 kt. Seas 3 to 5 ft Gulf of Venezuela, and 5 to 7 ft elsewhere. .THU NIGHT...E winds 20 to 30 kt Gulf of Venezuela, and E 15 to 25 kt elsewhere. Seas 5 to 7 ft. .FRI...E winds 15 to 25 kt. Seas 5 to 7 ft. .FRI NIGHT...E winds 15 to 25 kt. Seas 4 to 6 ft. .SAT...NE winds 15 to 25 kt Gulf of Venezuela, and E 10 to 20 kt elsewhere. Seas 3 to 5 ft. Offshore Leeward Islands and adjacent ATLC waters from 15N to 19N W of 55W .TONIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. .TUE...E winds 10 to 15 kt. Seas 3 to 5 ft. .TUE NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft. .WED...E winds 10 to 20 kt. Seas 3 to 5 ft. .WED NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft. .THU...E winds 10 to 15 kt. Seas 3 to 4 ft. .THU NIGHT...E winds 10 to 15 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 4 ft. .SAT...E winds 10 to 15 kt. Seas 3 to 4 ft. Offshore Windward Islands and adjacent ATLC waters from 07N to 15N W of 55W .TONIGHT...E winds 10 to 20 kt. Seas 3 to 4 ft. .TUE...E winds 10 to 20 kt. Seas 3 to 5 ft. .TUE NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft. .WED...E winds 10 to 20 kt. Seas 3 to 5 ft. .WED NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft. .THU...E winds 10 to 20 kt. Seas 3 to 4 ft. .THU NIGHT...E winds 10 to 20 kt. Seas 3 to 4 ft. .FRI...E winds 10 to 20 kt. Seas 3 to 4 ft. .FRI NIGHT...E winds 10 to 20 kt. Seas 3 to 4 ft. .SAT...E winds 10 to 20 kt. Seas 3 to 4 ft. Synopsis for the the SW N Atlantic including the Bahamas .SYNOPSIS...Hurricane Franklin is near 28.5N 71.0W at 5 PM EDT, and is moving north at 8 kt. Maximum sustained winds are 125 kt with gusts to 150 kt, and the minimum central pressure is 937 mb. Franklin will move to 29.7N 71.1W Tue morning, 31.3N 70.3W Tue afternoon, and will be N of area near 33.0N 68.8W Wed morning. Expect increasing winds and building seas E of Florida on Tue as Idalia moves across the Eastern Gulf of Mexico. ATLC waters from 27N to 31N W of 77W ...TROPICAL STORM WARNING... .TONIGHT...E winds less than 10 kt, shifting to S after midnight. Seas 6 to 8 ft. .TUE...SW winds less than 10 kt. Seas 6 to 8 ft. .TUE NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. S winds 10 to 20 kt. Seas 5 to 7 ft. .WED...TROPICAL STORM CONDITIONS POSSIBLE. S winds 15 to 25 kt, increasing to 25 to 35 kt in the afternoon. Seas 6 to 8 ft. .WED NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. SW winds 30 to 40 kt. Seas 8 to 11 ft. .THU...SW winds 20 to 30 kt. Seas 8 to 11 ft. .THU NIGHT...W winds 10 to 20 kt. Seas 6 to 8 ft. .FRI...W winds 10 to 20 kt. Seas 4 to 6 ft. .FRI NIGHT...NW winds 15 to 25 kt. Seas 5 to 7 ft. .SAT...NW winds 20 to 30 kt. Seas 7 to 10 ft. ATLC waters from 27N to 31N between 65W and 77W ...HURRICANE WARNING... .TONIGHT...HURRICANE CONDITIONS. W of 70W, N winds 85 to 105 kt, becoming NW 100 to 120 kt after midnight. Elsewhere, S winds 35 to 45 kt. Seas 13 to 18 ft W of 70W, and 10 to 15 ft elsewhere. .TUE...HURRICANE CONDITIONS EXPECTED. W of 70W, W winds 100 to 120 kt. Elsewhere, S winds 45 to 55 kt, increasing to 65 to 75 kt in the afternoon. Seas 11 to 16 ft. .TUE NIGHT...TROPICAL STORM CONDITIONS EXPECTED. W of 70W, W winds 40 to 50 kt, diminishing to 20 to 30 kt after midnight. Elsewhere, SW winds 45 to 55 kt, diminishing to 25 to 35 kt after midnight. Seas 8 to 11 ft W of 70W, and 10 to 15 ft elsewhere. .WED...TROPICAL STORM CONDITIONS POSSIBLE. SW winds 15 to 25 kt W of 70W, and W 20 to 30 kt elsewhere. Seas 6 to 9 ft W of 70W, and 8 to 13 ft elsewhere. .WED NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. SW winds 20 to 30 kt W of 70W, and W 10 to 20 kt elsewhere. Seas 5 to 7 ft W of 70W, and 6 to 9 ft elsewhere. .THU...SW winds 20 to 30 kt W of 70W, and W 10 to 15 kt elsewhere. Seas 5 to 7 ft. .THU NIGHT...SW winds 15 to 25 kt W of 70W, and NW less than 10 kt elsewhere. Seas 6 to 8 ft W of 70W, and 3 to 5 ft elsewhere. .FRI...W of 70W, SW winds 10 to 20 kt. Elsewhere, NW winds less than 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 4 to 6 ft. .FRI NIGHT...W winds 10 to 20 kt. Seas 4 to 6 ft. .SAT...W winds 10 to 20 kt. Seas 4 to 6 ft. Bahamas N of 22N .TONIGHT...SW winds 10 to 15 kt. Seas 3 ft. .TUE...S winds 10 to 15 kt. Seas 3 ft. .TUE NIGHT...S winds 10 to 20 kt. Seas 3 ft. .WED...S winds 10 to 20 kt. Seas 3 ft. .WED NIGHT...S winds 10 to 20 kt. Seas 3 ft. .THU...SE winds 10 to 15 kt. Seas 3 ft in the morning, subsiding to 2 ft or less. .THU NIGHT...SE winds 10 to 15 kt. Seas 2 ft or less. .FRI...E winds 10 to 15 kt. Seas 2 ft or less. .FRI NIGHT...E winds 10 to 15 kt. Seas 2 ft or less. .SAT...E winds 10 to 15 kt. Seas 2 ft or less. ATLC waters from 22N to 27N between 65W and the Bahamas ...TROPICAL STORM WARNING... .TONIGHT...TROPICAL STORM CONDITIONS POSSIBLE. W of 70W, W winds 25 to 35 kt, becoming SW 15 to 25 kt after midnight. Elsewhere, S winds 20 to 30 kt. Seas 6 to 9 ft. .TUE...SW winds 15 to 25 kt. Seas 5 to 7 ft. .TUE NIGHT...SW winds 10 to 20 kt. Seas 5 to 7 ft. .WED...S winds 10 to 20 kt. Seas 4 to 6 ft. .WED NIGHT...S winds 10 to 15 kt. Seas 4 to 6 ft. .THU...S winds 10 to 15 kt. Seas 3 to 5 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. .FRI NIGHT...E winds 10 to 15 kt. Seas 3 ft. .SAT...E winds 10 to 15 kt. Seas 3 to 4 ft. ATLC waters S of 22N W of 65W .TONIGHT...S winds 10 to 15 kt. Seas 3 to 5 ft. .TUE...SE winds 10 to 15 kt. Seas 3 ft. .TUE NIGHT...SE winds 10 to 15 kt. Seas 3 to 4 ft. .WED...SE winds 10 to 20 kt. Seas 3 to 4 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 20 kt. Seas 3 to 5 ft. .FRI NIGHT...E winds 10 to 20 kt. Seas 3 to 4 ft. .SAT...E winds 10 to 20 kt. Seas 3 to 4 ft. ATLC waters from 19N to 22N between 55W and 65W .TONIGHT...SE winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 3 to 4 ft. .TUE...SE winds 10 to 15 kt. Seas 3 to 4 ft. .TUE NIGHT...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...E winds 10 to 15 kt. Seas 3 to 4 ft. .THU...E 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 kt. Seas 4 ft. .FRI NIGHT...E winds 10 kt. Seas 3 to 4 ft. .SAT...E winds 10 to 15 kt. Seas 3 to 4 ft.