000 FZNT31 KNHC 280257 OFFN20 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 1057 PM EDT Sun Aug 27 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 19.8N 85.3W at 11 PM EDT, and is moving north at 0 kt. Maximum sustained winds are 50 kt with gusts to 60 kt, and the minimum central pressure is 992 mb. Idalia will move to 20.7N 85.1W Mon morning, strengthen to a hurricane near 22.2N 85.0W Mon evening, 24.2N 84.9W Tue morning, 26.8N 84.3W Tue evening, inland to 29.6N 82.8W Wed morning, and weaken to a tropical storm near 32.0N 80.1W Wed evening. Other than Idalia, gentle to moderate winds will prevail across the basin E of 80W through early Mon. High pressure will build westward across the western Atlantic late Mon through Thu as Hurricane Franklin lifts north of the region. This will lead to moderate to fresh trade winds in the eastern Caribbean by Mon night, 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 3 to 5 ft. .MON...TROPICAL STORM CONDITIONS EXPECTED. W winds 40 to 50 kt. Seas 3 to 5 ft. .MON NIGHT...TROPICAL STORM CONDITIONS EXPECTED. SW winds 45 to 55 kt, becoming S 25 to 35 kt after midnight. Seas 3 to 5 ft. .TUE...SW winds 15 to 25 kt. Seas 3 to 5 ft. .TUE NIGHT...S winds 10 to 20 kt. Seas 3 to 4 ft. .WED...S winds 10 to 15 kt. Seas 3 to 4 ft. .WED NIGHT...SE winds 10 to 15 kt. Seas 3 ft. .THU...SE winds 10 to 15 kt. Seas 3 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. Caribbean N of 15N between 72W and 85W ...TROPICAL STORM WARNING... .OVERNIGHT...TROPICAL STORM CONDITIONS. S of 18N, SE winds 10 to 20 kt. Elsewhere, S winds 30 to 40 kt, increasing to 40 to 50 kt after midnight. Seas 2 ft or less S of 18N, and 3 to 5 ft elsewhere. .MON...TROPICAL STORM CONDITIONS EXPECTED. SE winds 10 to 20 kt S of 18N, and S 50 to 60 kt elsewhere. Seas 3 ft S of 18N, and 4 to 6 ft elsewhere. .MON NIGHT...TROPICAL STORM CONDITIONS EXPECTED. S of 18N, SE winds 10 to 20 kt. Elsewhere, S winds 45 to 55 kt, diminishing to 25 to 35 kt after midnight. Seas 3 ft S of 18N, and 4 to 6 ft elsewhere. .TUE...SE winds 10 to 20 kt S of 18N, and S 15 to 25 kt elsewhere. Seas 3 to 5 ft. .TUE NIGHT...SE winds 10 to 20 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 5 ft. .THU...E winds 10 to 20 kt. Seas 4 to 6 ft S of 18N, and 3 to 4 ft elsewhere. .THU NIGHT...E winds 15 to 25 kt S of 18N, and E 10 to 15 kt elsewhere. S of 18N, seas 4 to 6 ft. Elsewhere, seas 3 ft in the evening, subsiding to 2 ft or less. .FRI...E winds 15 to 25 kt S of 18N, and E 10 to 15 kt elsewhere. S of 18N, seas 5 to 7 ft. Elsewhere, seas 2 ft or less, building to 3 ft in the afternoon. Caribbean from 11N to 15N W of 72W .OVERNIGHT...E winds 10 to 15 kt. Seas 2 ft or less. .MON...E winds less than 10 kt within 90 nm of coast of Colombia, and SE 10 to 15 kt elsewhere. Seas 2 ft or less. .MON NIGHT...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 4 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 5 to 7 ft within 90 nm of coast of Colombia, and 3 to 5 ft elsewhere. .THU...E winds 10 to 20 kt. Seas 4 to 6 ft. .THU NIGHT...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. .FRI...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. SW Caribbean S of 11N .OVERNIGHT...SE winds less than 10 kt. Seas 2 ft or less. .MON...S winds less than 10 kt. Seas 2 ft or less. .MON NIGHT...Variable winds less than 10 kt, becoming NE less than 10 kt after midnight. 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. .WED NIGHT...N winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 3 ft. .THU...N winds 10 to 15 kt. Seas 3 to 5 ft. .THU NIGHT...N winds less than 10 kt. Seas 3 to 5 ft. .FRI...SE winds 10 to 15 kt, shifting to W in the afternoon. Seas 3 to 5 ft. Caribbean between 64W and 72W .OVERNIGHT...E winds 10 to 20 kt. Seas 2 ft or less Gulf of Venezuela, and 3 ft elsewhere. .MON...Gulf of Venezuela, E winds less than 10 kt, shifting to SW 10 kt in the afternoon. Elsewhere, SE winds 10 to 20 kt. Seas 2 ft or less Gulf of Venezuela, and 3 to 5 ft elsewhere. .MON NIGHT...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. Gulf of Venezuela, seas 3 ft in the morning, subsiding to 2 ft or less. Elsewhere, seas 4 to 6 ft. .TUE NIGHT...E winds 10 to 20 kt Gulf of Venezuela, and E 15 to 25 kt elsewhere. 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 4 to 6 ft. .THU...E winds 10 to 20 kt. Seas 3 to 4 ft Gulf of Venezuela, and 4 to 6 ft elsewhere. .THU NIGHT...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 5 to 7 ft elsewhere. .FRI...E winds 10 to 20 kt. Gulf of Venezuela, seas 3 to 4 ft in the morning, subsiding to 2 ft or less. Elsewhere, seas 5 to 7 ft. Offshore Leeward Islands and adjacent ATLC waters from 15N to 19N W of 55W .OVERNIGHT...SE winds 10 to 15 kt. Seas 3 to 4 ft. .MON...SE winds 10 to 15 kt. Seas 3 to 4 ft. .MON NIGHT...E winds 10 to 15 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 4 to 6 ft. .WED NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .THU...E winds 10 to 15 kt. Seas 4 to 5 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. .FRI...E winds 10 to 15 kt. Seas 4 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 3 to 4 ft. .MON...E winds 10 to 20 kt. Seas 3 to 4 ft. .MON NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft. .TUE...E winds 10 to 20 kt. Seas 4 to 6 ft. .TUE NIGHT...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. Synopsis for the the SW N Atlantic including the Bahamas .SYNOPSIS...Hurricane Franklin is near 26.4N 70.5W at 11 PM EDT, and is moving north-northwest at 7 kt. Maximum sustained winds are 90 kt with gusts to 110 kt, and the minimum central pressure is 962 mb. Franklin will move to 27.3N 71.0W Mon morning, 28.9N 71.2W Mon evening, 30.4N 70.7W Tue morning, exiting the region to 32.2N 69.5W Tue evening. Meanwhile, Tropical Storm Idalia is near 19.8N 85.3W at 11 PM EDT, and is moving north at 0 kt. Maximum sustained winds are 50 kt with gusts to 60 kt, and the minimum central pressure is 992 mb. Idalia will move to 20.7N 85.1W Mon morning, strengthen to a hurricane near 22.2N 85.0W Mon evening, 24.2N 84.9W Tue morning, 26.8N 84.3W Tue evening, inland to 29.6N 82.8W Wed morning, and weaken to a tropical storm near 32.0N 80.1W Wed evening. Idalia will change little in intensity as it moves to 34.3N 73.4W late Thu. Expect producing increasing winds and seas offshore of central and northern Florida with the passage of Idalia. ATLC waters from 27N to 31N W of 77W .OVERNIGHT...SE winds 10 kt. Seas 4 to 6 ft. .MON...E winds less than 10 kt. Seas 6 to 8 ft. .MON NIGHT...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...HURRICANE CONDITIONS POSSIBLE. .WED NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. .THU...TROPICAL STORM CONDITIONS POSSIBLE. .THU NIGHT...W winds 10 to 20 kt. Seas 5 to 7 ft. .FRI...NW winds 10 to 20 kt. Seas 4 to 6 ft. ATLC waters from 27N to 31N between 65W and 77W ...HURRICANE WARNING... .OVERNIGHT...TROPICAL STORM CONDITIONS. W of 70W, E winds 40 to 50 kt, becoming NE 50 to 60 kt after midnight. Elsewhere, SE winds 40 to 50 kt. Seas 10 to 15 ft. .MON...HURRICANE CONDITIONS EXPECTED. W of 70W, NE winds 80 to 90 kt, increasing to 80 to 100 kt in the afternoon. Elsewhere, SE winds 35 to 45 kt. Seas 13 to 18 ft W of 70W, and 10 to 15 ft elsewhere. .MON NIGHT...HURRICANE CONDITIONS EXPECTED. NW winds 85 to 105 kt W of 70W, and S 35 to 45 kt elsewhere. Seas 12 to 17 ft. .TUE...HURRICANE CONDITIONS EXPECTED. W of 70W, W winds 85 to 105 kt. Elsewhere, S winds 45 to 55 kt, increasing to 60 to 70 kt in the afternoon. Seas 11 to 16 ft. .TUE NIGHT...HURRICANE CONDITIONS POSSIBLE. W of 70W, W winds 40 to 50 kt, diminishing to 20 to 30 kt after midnight. Elsewhere, SW winds 40 to 50 kt, diminishing to 25 to 35 kt after midnight. Seas 8 to 13 ft W of 70W, and 11 to 16 ft elsewhere. .WED...TROPICAL STORM CONDITIONS POSSIBLE. .WED NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. .THU...TROPICAL STORM CONDITIONS POSSIBLE. .THU NIGHT...SW winds 15 to 25 kt W of 70W, and NW less than 10 kt elsewhere. Seas 5 to 7 ft W of 70W, and 3 to 5 ft elsewhere. .FRI...SW winds 10 to 20 kt W of 70W, and E less than 10 kt elsewhere. Seas 4 to 6 ft. Bahamas N of 22N .OVERNIGHT...SW winds less than 10 kt. Seas 3 to 5 ft. .MON...SW winds less than 10 kt. Seas 3 to 5 ft. .MON NIGHT...SW winds 10 to 15 kt. Seas 3 to 4 ft. .TUE...S 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 2 ft or less, building to 3 to 4 ft in the afternoon. .WED NIGHT...S winds 10 to 20 kt. Seas 2 ft or less. .THU...SE winds 10 to 20 kt. Seas 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. ATLC waters from 22N to 27N between 65W and the Bahamas ...HURRICANE WARNING... .OVERNIGHT...TROPICAL STORM CONDITIONS. W winds 70 to 85 kt W of 70W, and S 45 to 55 kt elsewhere. Seas 10 to 15 ft. .MON...TROPICAL STORM CONDITIONS EXPECTED. W of 70W, W winds 75 to 85 kt, diminishing to 35 to 45 kt in the afternoon. Elsewhere, S winds 35 to 45 kt. Seas 8 to 13 ft. .MON NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. SW winds 20 to 30 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...E winds 10 to 15 kt. Seas 3 to 5 ft. .FRI...E winds 10 to 15 kt. Seas 3 to 4 ft. ATLC waters S of 22N W of 65W .OVERNIGHT...S winds 10 to 15 kt. Seas 3 to 5 ft. .MON...S winds 10 to 15 kt. Seas 3 to 5 ft. .MON NIGHT...S 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 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 20 kt. Seas 3 to 5 ft. .FRI...E winds 10 to 20 kt. Seas 3 to 5 ft. ATLC waters from 19N to 22N between 55W and 65W .OVERNIGHT...S winds 10 to 15 kt. Seas 4 to 5 ft. .MON...S winds 10 to 15 kt. Seas 4 to 5 ft. .MON NIGHT...SE winds 10 to 15 kt. Seas 4 to 5 ft. .TUE...SE winds 10 to 15 kt. Seas 4 ft. .TUE NIGHT...E winds 10 to 15 kt. Seas 4 to 5 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.