Offshore Forecast
Issued by NWS
Issued by NWS
880 FZNT31 KNHC 232126 OFFN20 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 526 PM EDT Mon Sep 23 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...Potential Tropical Cyclone Nine is located near 18.1N 82.2W at 2100 UTC, moving N-NW at 6 kt. Maximum sustained winds are 30 kt with gusts to 40 kt. Minimum central pressure is 1003 mb. Nine is expected to move NW tonight and gradually become better organized, reaching near 19N 83W tonight as a Tropical Storm, continue to steadily intensify and reach near 19.9N 84.2W Tue afternoon, near 21.1N 85.4W Tue night, near 23N 86W as a hurricane Wed afternoon, then continue moving northward and intensify across the eastern Gulf of Mexico through Thu night. Widespread showers and thunderstorms will continue across the W and NW Caribbean through Wed as Nine moves through and then exits the region. NW Caribbean W of 85W ...HURRICANE WARNING... .TONIGHT...NE winds 10 to 20 kt. Seas 4 to 6 ft. .TUE...TROPICAL STORM CONDITIONS POSSIBLE. N winds 20 to 30 kt. Seas 5 to 7 ft. .TUE NIGHT...TROPICAL STORM CONDITIONS EXPECTED. NW winds 40 to 50 kt. Seas 7 to 10 ft. .WED...TROPICAL STORM CONDITIONS EXPECTED. W winds 55 to 65 kt, becoming SW 45 to 55 kt in the afternoon. Seas 8 to 11 ft. .WED NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. SW winds 30 to 40 kt, diminishing to 20 to 30 kt after midnight. Seas 7 to 10 ft. .THU...SW winds 20 to 30 kt, diminishing to 10 to 20 kt in the afternoon. Seas 5 to 7 ft. .THU NIGHT...S winds 10 to 15 kt. Seas 4 to 6 ft. .FRI...S winds 10 to 15 kt, shifting to SE in the afternoon. Seas 3 to 5 ft. .FRI NIGHT...SE winds 10 to 20 kt. Seas 3 to 5 ft. .SAT...SE 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 POSSIBLE. SE winds 20 to 30 kt S of 18N, and E 25 to 35 kt elsewhere. Seas 5 to 7 ft. .TUE...TROPICAL STORM CONDITIONS EXPECTED. SE winds 20 to 30 kt S of 18N, and SE 35 to 45 kt elsewhere. Seas 5 to 7 ft S of 18N, and 7 to 10 ft elsewhere. .TUE NIGHT...TROPICAL STORM CONDITIONS EXPECTED. SE winds 15 to 25 kt S of 18N, and SE 45 to 55 kt elsewhere. Seas 5 to 7 ft S of 18N, and 8 to 11 ft elsewhere. .WED...TROPICAL STORM CONDITIONS EXPECTED. S of 18N, SE winds 15 to 25 kt. Elsewhere, SE winds 45 to 55 kt, becoming S 35 to 45 kt in the afternoon. Seas 5 to 7 ft S of 18N, and 7 to 10 ft elsewhere. .WED NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. SE winds 10 to 20 kt S of 18N, and S 25 to 35 kt elsewhere. Seas 5 to 7 ft S of 18N, and 6 to 9 ft elsewhere. .THU...SE winds 10 to 20 kt S of 18N, and S 15 to 25 kt elsewhere. Seas 6 to 8 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 20 kt. Seas 3 to 5 ft. .SAT...E winds 10 to 20 kt. Seas 3 to 4 ft. Caribbean from 11N to 15N W of 72W .TONIGHT...SE winds 10 to 20 kt. Seas 3 to 4 ft. .TUE...SE winds 10 to 20 kt. 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 within 90 nm of coast of Colombia, and SE 15 to 25 kt elsewhere. 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 5 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. .FRI...SE winds 10 to 15 kt. Seas 3 to 4 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. .SAT...SE winds less than 10 kt within 90 nm of coast of Colombia, and E 10 to 15 kt elsewhere. Seas 3 to 4 ft. SW Caribbean S of 11N .TONIGHT...S winds 10 to 15 kt. Seas 3 ft. .TUE...SW winds 10 to 15 kt, shifting to S in the afternoon. Seas 3 ft. .TUE NIGHT...S winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 2 ft or less. .WED...SW winds 10 to 15 kt, shifting to S in the afternoon. Seas 3 ft. .WED NIGHT...SW winds less than 10 kt. Seas 3 ft. .THU...SW winds less than 10 kt. Seas 3 ft. .THU NIGHT...Variable winds less than 10 kt. Seas 3 ft. .FRI...S winds less than 10 kt. Seas 3 ft. .FRI NIGHT...SW winds less than 10 kt. Seas 3 ft. .SAT...W winds less than 10 kt. Seas 2 ft or less. Caribbean between 64W and 72W .TONIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft. .TUE...E winds 10 to 20 kt. Seas 3 to 5 ft. .TUE NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. .WED...E winds 10 to 20 kt. Seas 3 ft Gulf of Venezuela, and 4 to 6 ft elsewhere. .WED NIGHT...E winds 10 to 20 kt. Seas 4 to 5 ft. .THU...E winds 10 to 15 kt. Seas 2 ft or less Gulf of Venezuela, and 3 to 5 ft elsewhere. .THU NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. .FRI...E winds 10 to 20 kt. Seas 2 ft or less Gulf of Venezuela, and 3 to 5 ft elsewhere. .FRI NIGHT...E winds 10 to 15 kt. Seas 2 ft or less Gulf of Venezuela, and 3 to 5 ft elsewhere. .SAT...N winds less than 10 kt Gulf of Venezuela, and E 10 to 15 kt elsewhere. Seas 2 ft or less Gulf of Venezuela, and 3 to 5 ft elsewhere. 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 4 ft. .TUE NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. .WED...E winds 10 to 15 kt. Seas 3 to 5 ft. .WED NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .THU...E winds 10 to 15 kt. Seas 4 to 6 ft. .THU NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. .FRI...E winds 10 to 15 kt. Seas 4 to 6 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .SAT...E winds 10 to 15 kt. Seas 4 to 6 ft. Offshore Windward Islands and adjacent ATLC waters from 07N to 15N 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 4 ft. .TUE NIGHT...E winds 10 to 15 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 4 to 6 ft. .THU...E winds 10 to 20 kt. Seas 4 to 6 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 5 ft. Synopsis for the the SW N Atlantic including the Bahamas .SYNOPSIS...Moderate N to NE swell will propagate into the northern waters today, bringing an increase in seas over the waters N of 25N through mid-week. Potential Tropical Cyclone Nine is located near 18.1N 82.2W at 2100 UTC, moving N-NW at 6 kt. Maximum sustained winds are 30 kt with gusts to 40 kt. Minimum central pressure is 1003 mb. Nine is forecast to move northward through the eastern Gulf of Mexico Tue night through Thu night and become a large and powerful hurricane. This will bring strong winds and large seas to areas offshore Florida and N of the Bahamas during that time. Tropical storm force winds are expected across portions of central and northeast Florida coastal waters Thu through early Fri. ATLC waters from 27N to 31N W of 77W .TONIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .TUE...E winds 10 to 15 kt. Seas 5 to 7 ft. .TUE NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. .WED...E winds 10 to 20 kt. Seas 6 to 7 ft. .WED NIGHT...SE winds 15 to 25 kt. Seas 6 to 8 ft. .THU...TROPICAL STORM CONDITIONS POSSIBLE. .THU NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. .FRI...S winds 20 to 30 kt. Seas 8 to 13 ft. .FRI NIGHT...SW winds 10 to 20 kt. Seas 6 to 9 ft. .SAT...SW winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 5 to 7 ft. ATLC waters from 27N to 31N between 65W and 77W .TONIGHT...N winds 10 to 20 kt. Seas 6 to 8 ft. .TUE...NW winds 10 to 20 kt. Seas 6 to 8 ft. .TUE NIGHT...N winds 10 to 15 kt. Seas 7 to 8 ft. .WED...NE winds 10 to 15 kt. Seas 6 to 7 ft. .WED NIGHT...E winds 10 to 20 kt W of 70W, and NE less than 10 kt elsewhere. Seas 6 to 7 ft. .THU...W of 70W, SE winds 10 to 20 kt. Elsewhere, NE winds 10 to 15 kt, shifting to E in the afternoon. Seas 6 to 7 ft. .THU NIGHT...SE winds 15 to 25 kt W of 70W, and E less than 10 kt elsewhere. Seas 6 to 7 ft. .FRI...S winds 15 to 25 kt W of 70W, and SE less than 10 kt elsewhere. Seas 6 to 8 ft. .FRI NIGHT...W of 70W, S winds 10 to 20 kt. Elsewhere, Variable winds less than 10 kt, becoming SW less than 10 kt after midnight. Seas 6 to 8 ft. .SAT...W winds 10 to 15 kt. Seas 5 to 7 ft. Bahamas N of 22N .TONIGHT...E winds 10 to 15 kt. Seas 3 to 5 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...SE winds 15 to 25 kt. Seas 3 to 5 ft. .WED NIGHT...SE winds 20 to 30 kt. Seas 3 to 5 ft. .THU...SE winds 20 to 30 kt. Seas 3 to 5 ft. .THU NIGHT...SE winds 15 to 25 kt. Seas 3 to 5 ft. .FRI...S winds 15 to 25 kt. Seas 3 to 4 ft. .FRI NIGHT...SE winds 10 to 20 kt. Seas 3 to 4 ft. .SAT...SE winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 3 to 4 ft. ATLC waters from 22N to 27N between 65W and the Bahamas .TONIGHT...W of 70W, NE winds 10 to 15 kt. Elsewhere, NW winds 10 to 15 kt, diminishing to less than 10 kt after midnight. Seas 4 to 6 ft. .TUE...W of 70W, E winds less than 10 kt. Elsewhere, NW winds less than 10 kt, shifting to W in the afternoon. Seas 4 to 6 ft. .TUE NIGHT...W of 70W, E winds 10 to 15 kt. Elsewhere, NW winds 10 to 15 kt, shifting to N after midnight. Seas 5 to 7 ft. .WED...E winds 10 to 15 kt W of 70W, and NE less than 10 kt elsewhere. Seas 5 to 7 ft. .WED NIGHT...E winds 10 to 20 kt W of 70W, and NE less than 10 kt elsewhere. Seas 5 to 6 ft. .THU...W of 70W, SE winds 10 to 20 kt. Elsewhere, E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 5 to 6 ft. .THU NIGHT...SE winds 10 to 20 kt W of 70W, and E less than 10 kt elsewhere. Seas 5 to 6 ft. .FRI...SE winds 10 to 20 kt W of 70W, and SE less than 10 kt elsewhere. Seas 5 to 6 ft. .FRI NIGHT...W of 70W, SE winds 10 to 15 kt, diminishing to less than 10 kt after midnight. Elsewhere, NE winds less than 10 kt. Seas 5 to 6 ft. .SAT...NE winds less than 10 kt. Seas 5 ft. ATLC waters S of 22N W of 65W .TONIGHT...SE winds 10 to 15 kt. Seas 3 to 4 ft. .TUE...SE winds less than 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 3 to 4 ft. .TUE NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. .WED...E winds 10 to 15 kt. Seas 3 to 5 ft. .WED NIGHT...E winds 10 to 20 kt. Seas 4 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 4 to 6 ft. .FRI NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. .SAT...E winds 10 to 15 kt. Seas 4 to 6 ft. ATLC waters from 19N to 22N between 55W and 65W .TONIGHT...W winds less than 10 kt, shifting to S after midnight. Seas 4 ft. .TUE...S winds less than 10 kt. Seas 4 ft. .TUE NIGHT...E winds less than 10 kt. Seas 4 to 5 ft. .WED...E winds 10 to 15 kt. Seas 5 ft. .WED NIGHT...E winds 10 to 15 kt. Seas 5 to 6 ft. .THU...E winds 10 to 15 kt. Seas 5 to 6 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 5 ft. .FRI...E winds 10 to 15 kt. Seas 5 to 6 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 5 to 6 ft. .SAT...E winds less than 10 kt. Seas 5 to 6 ft.