000 FZNT31 KNHC 290259 OFFN20 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 1059 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 22.0N 85.0W at 11 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 983 mb. Idalia will strengthen to a hurricane near 23.7N 85.0W Tue morning, move to 26.2N 84.6W Tue evening, 29.0N 83.7W Wed morning and continuing to move away from the Caribbean basin. 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... .OVERNIGHT...TROPICAL STORM CONDITIONS. SW winds 40 to 50 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 5 ft. .WED NIGHT...SE winds 10 to 20 kt. Seas 3 to 5 ft. .THU...SE winds 10 to 15 kt. Seas 3 to 4 ft. .THU NIGHT...E winds 10 to 20 kt. Seas 3 to 4 ft. .FRI...E winds 10 to 15 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. Caribbean N of 15N between 72W and 85W ...TROPICAL STORM WARNING... .OVERNIGHT...TROPICAL STORM CONDITIONS. SE winds 10 to 20 kt S of 18N, and S 35 to 45 kt elsewhere. Seas 3 ft S of 18N, and 4 to 6 ft elsewhere. .TUE...TROPICAL STORM CONDITIONS POSSIBLE. SE winds 10 to 20 kt S of 18N, and SE 20 to 30 kt elsewhere. Seas 3 to 5 ft. .TUE NIGHT...E winds 10 to 20 kt S of 18N, and SE 15 to 25 kt elsewhere. Seas 3 to 5 ft. .WED...SE winds 10 to 20 kt. Seas 3 to 5 ft. .WED NIGHT...E winds 15 to 25 kt S of 18N, and SE 10 to 20 kt elsewhere. Seas 3 to 5 ft. .THU...E winds 15 to 25 kt S of 18N, and SE 10 to 15 kt elsewhere. Seas 4 to 6 ft S of 18N, and 3 to 4 ft elsewhere. .THU NIGHT...E winds 10 to 20 kt. S of 18N, seas 4 to 6 ft. Elsewhere, seas 3 ft in the evening, subsiding to 2 ft or less. .FRI...E winds 10 to 20 kt. Seas 4 to 6 ft S of 18N, and 2 ft or less elsewhere. .FRI NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft S of 18N, and 2 ft or less elsewhere. .SAT...E winds 10 to 20 kt. Seas 4 to 6 ft S of 18N, and 2 ft or less elsewhere. Caribbean from 11N to 15N W of 72W .OVERNIGHT...E winds 10 to 20 kt. Seas 2 ft or less. .TUE...E winds 10 to 20 kt. Seas 2 ft or less, building to 3 ft in the afternoon. .TUE NIGHT...E winds 15 to 25 kt. Seas 3 to 5 ft. .WED...E winds 15 to 25 kt. Seas 5 to 7 ft within 90 nm of coast of Colombia, and 3 to 5 ft elsewhere. .WED NIGHT...E winds 15 to 25 kt. Seas 4 to 6 ft. .THU...E winds 15 to 25 kt. Seas 4 to 6 ft. .THU NIGHT...E winds 15 to 25 kt. Seas 5 to 7 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. SW Caribbean S of 11N .OVERNIGHT...Variable winds less than 10 kt. Seas 2 ft or less. .TUE...E 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. .WED NIGHT...NW winds less than 10 kt, shifting to N after midnight. Seas 3 ft. .THU...NW winds 10 to 15 kt. Seas 3 to 5 ft. .THU NIGHT...NW winds less than 10 kt, becoming N 10 to 20 kt after midnight. Seas 3 to 5 ft. .FRI...S winds 10 to 20 kt. Seas 3 to 5 ft. .FRI NIGHT...N winds less than 10 kt. Seas 3 to 4 ft. .SAT...N winds less than 10 kt. Seas 3 to 4 ft. Caribbean between 64W and 72W .OVERNIGHT...E winds 10 to 20 kt. Seas 2 ft or less Gulf of Venezuela, and 4 to 6 ft elsewhere. .TUE...E winds 10 to 20 kt. Seas 3 ft Gulf of Venezuela, and 4 to 6 ft elsewhere. .TUE NIGHT...E winds 15 to 25 kt. Seas 4 to 6 ft. .WED...NE winds 15 to 25 kt Gulf of Venezuela, and E 15 to 25 kt elsewhere. Seas 4 to 6 ft. .WED NIGHT...E winds 15 to 25 kt. Seas 4 to 6 ft. .THU...E winds 15 to 25 kt. Seas 3 to 4 ft Gulf of Venezuela, and 5 to 7 ft elsewhere. .THU NIGHT...E winds 15 to 25 kt. Seas 3 to 5 ft Gulf of Venezuela, and 5 to 7 ft elsewhere. .FRI...E winds 15 to 25 kt. Seas 3 to 5 ft Gulf of Venezuela, and 5 to 7 ft elsewhere. .FRI NIGHT...E winds 10 to 20 kt. Seas 3 ft Gulf of Venezuela, and 4 to 6 ft elsewhere. .SAT...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 .OVERNIGHT...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 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 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 5 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 .OVERNIGHT...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 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 5 ft. .FRI NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft. .SAT...E winds 10 to 20 kt. Seas 3 to 4 ft. Synopsis for the the SW N Atlantic including the Bahamas .SYNOPSIS...Major Hurricane Franklin is near 29.4N 71.0W at 11 PM EDT, and is moving north at 8 kt. Maximum sustained winds are 130 kt with gusts to 160 kt, and the minimum central pressure is 926 mb. Franklin will move to 30.5N 70.8W Tue morning, moving N of the area 32.1N 69.7W Tue evening, then to 33.9N 67.7W Wed morning when outer associated conditions will lift N of 31N. Meanwhile, Tropical Storm Idalia is near the Yucatan Channel near 22.0N 85.0W at 11 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 983 mb. Idalia will strengthen to a hurricane in the SE Gulf Tue morning, move to 29.0N 83.7W Wed morning, move inland and weaken to a tropical storm near 31.5N 81.6W Wed evening, 33.2N 78.8W Thu morning, and 34.0N 76.0W Thu evening. Idalia will change little in intensity as it moves to 33.5N 72.0W late Fri. Expect increasing winds and building seas E of Florida beginning Tue night as Idalia moves across the Eastern Gulf of Mexico. ATLC waters from 27N to 31N W of 77W ...TROPICAL STORM WARNING... .OVERNIGHT...S winds 10 to 15 kt. Seas 6 to 9 ft. .TUE...SW winds less than 10 kt. Seas 6 to 9 ft. .TUE NIGHT...S winds 10 to 20 kt. Seas 6 to 8 ft. .WED...HURRICANE CONDITIONS POSSIBLE. S winds 20 to 30 kt. Seas 6 to 9 ft. .WED NIGHT...HURRICANE CONDITIONS POSSIBLE. SW winds 30 to 40 kt. Seas 8 to 11 ft. .THU...SW winds 20 to 30 kt. Seas 7 to 10 ft. .THU NIGHT...W winds 10 to 20 kt. Seas 5 to 7 ft. .FRI...NE winds 10 to 15 kt. Seas 3 to 5 ft. .FRI NIGHT...NE winds 10 to 20 kt. Seas 3 to 5 ft. .SAT...NE winds 10 to 15 kt. Seas 3 to 5 ft. ATLC waters from 27N to 31N between 65W and 77W ...HURRICANE WARNING... .OVERNIGHT...HURRICANE CONDITIONS. W of 70W, NW winds 90 to 110 kt, increasing to 105 to 125 kt after midnight. Elsewhere, S winds 40 to 50 kt. Seas 15 to 20 ft W of 70W, and 11 to 16 ft elsewhere. .TUE...HURRICANE CONDITIONS EXPECTED. W of 70W, W winds 95 to 115 kt,Seas 14 to 19 ft, subsiding to 11 to 16 ft in the afternoon. Elsewhere, S winds 40 to 50 kt, increasing to 55 to 65 kt in the afternoon,Seas 11 to 16 ft. .TUE NIGHT...TROPICAL STORM CONDITIONS EXPECTED. W of 70W, W winds 45 to 55 kt, diminishing to 20 to 30 kt after midnight,Seas 9 to 14 ft, subsiding to 8 to 11 ft after midnight. Elsewhere, SW winds 45 to 55 kt, diminishing to 25 to 35 kt after midnight,Seas 10 to 15 ft. .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...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 7 to 10 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...W of 70W, SW winds 15 to 25 kt. Elsewhere, W winds less than 10 kt, becoming SW 10 to 20 kt after midnight. Seas 5 to 7 ft. .FRI...W winds 10 to 20 kt. Seas 4 to 6 ft. .FRI NIGHT...W winds 10 to 20 kt. Seas 3 to 5 ft. .SAT...NW winds 10 to 20 kt. Seas 3 to 5 ft. Bahamas N of 22N .OVERNIGHT...SW winds 10 to 15 kt. Seas 3 to 4 ft. .TUE...SW winds 10 to 15 kt. Seas 3 ft. .TUE NIGHT...SE 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 2 ft or less. .THU...SE winds 10 to 15 kt. Seas 2 ft or less. .THU NIGHT...SE winds 10 to 15 kt. Seas 2 ft or less. .FRI...SE winds 10 to 15 kt, shifting to E in the afternoon. Seas 2 ft or less. .FRI NIGHT...NE winds 10 to 15 kt. Seas 2 ft or less. .SAT...NE winds 10 to 15 kt. Seas 2 ft or less. ATLC waters from 22N to 27N between 65W and the Bahamas .OVERNIGHT...SW winds 15 to 25 kt. Seas 7 to 10 ft. .TUE...SW winds 15 to 25 kt. Seas 6 to 9 ft. .TUE NIGHT...SW winds 10 to 20 kt. Seas 6 to 8 ft. .WED...S winds 10 to 20 kt. Seas 5 to 7 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...SE winds 10 to 15 kt. Seas 3 to 5 ft. .FRI...SE winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 3 to 4 ft. .FRI NIGHT...E winds less than 10 kt. Seas 3 to 4 ft. .SAT...SE winds less than 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 3 to 4 ft. ATLC waters S of 22N W of 65W .OVERNIGHT...SE winds 10 to 15 kt. Seas 3 to 5 ft. .TUE...SE winds 10 to 15 kt. Seas 3 to 5 ft. .TUE NIGHT...SE winds 10 to 15 kt. Seas 3 to 5 ft. .WED...SE winds 10 to 15 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 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 15 kt. Seas 3 to 4 ft. ATLC waters from 19N to 22N between 55W and 65W .OVERNIGHT...SE winds 10 to 15 kt. Seas 4 ft. .TUE...SE winds 10 to 15 kt. Seas 4 ft. .TUE NIGHT...E winds 10 to 15 kt. Seas 4 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...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 to 15 kt. Seas 4 to 5 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 4 to 5 ft. .SAT...E winds less than 10 kt. Seas 3 to 4 ft.