000 FZNT31 KNHC 251501 OFFN20 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 1101 AM EDT Wed Oct 25 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...Fresh to occasionally strong winds will prevail in the NW and north-central Caribbean through the week. Gentle winds will prevail elsewhere. NW Caribbean W of 85W .THIS AFTERNOON...E winds 10 to 20 kt. Seas 4 to 6 ft. .TONIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. .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 5 to 7 ft. .FRI NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. .SAT...NE winds 10 to 20 kt. Seas 5 to 7 ft. .SAT NIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. .SUN...NE winds 10 to 15 kt. Seas 4 to 6 ft. Caribbean N of 15N between 72W and 85W .THIS AFTERNOON...E winds 10 to 20 kt S of 18N, and NE 15 to 25 kt elsewhere. Seas 3 to 5 ft. .TONIGHT...NE winds 10 to 20 kt S of 18N, and NE 15 to 25 kt elsewhere. Seas 4 to 6 ft. .THU...E winds 10 to 20 kt S of 18N, and NE 15 to 25 kt elsewhere. Seas 4 to 6 ft. .THU NIGHT...E winds 10 to 20 kt S of 18N, and NE 15 to 25 kt elsewhere. Seas 4 to 6 ft. .FRI...E winds 10 to 20 kt S of 18N, and NE 15 to 25 kt elsewhere. Seas 4 to 6 ft. .FRI NIGHT...NE winds 10 to 20 kt S of 18N, and NE 15 to 25 kt elsewhere. Seas 4 to 6 ft. .SAT...NE winds 10 to 20 kt. Seas 4 to 6 ft. .SAT NIGHT...NE winds 10 to 20 kt. Seas 3 to 5 ft. .SUN...NE winds 10 to 20 kt. Seas 3 to 5 ft. Caribbean from 11N to 15N W of 72W .THIS AFTERNOON...E winds less than 10 kt. Seas 2 ft or less. .TONIGHT...E winds less than 10 kt within 90 nm of coast of Colombia, and NE 10 to 15 kt elsewhere. Seas 2 ft or less, building to 3 ft after midnight. .THU...E winds 10 to 15 kt. Seas 3 ft. .THU NIGHT...NE winds less than 10 kt, shifting to E after midnight. Seas 3 ft. .FRI...NE winds 10 to 15 kt, shifting to NW in the afternoon. Seas 3 ft. .FRI NIGHT...N winds 10 to 15 kt. Seas 3 ft. .SAT...N winds 10 to 20 kt. Seas 3 to 4 ft. .SAT NIGHT...NW winds 10 to 20 kt. Seas 3 to 4 ft. .SUN...W winds 10 to 20 kt. Seas 3 to 4 ft. SW Caribbean S of 11N .THIS AFTERNOON...S winds less than 10 kt. Seas 2 ft or less. .TONIGHT...W winds less than 10 kt. Seas 2 ft or less. .THU...W winds less than 10 kt, shifting to SW in the afternoon. Seas 2 ft or less. .THU NIGHT...W winds 10 to 15 kt. Seas 2 ft or less. .FRI...W winds 10 to 15 kt. Seas 2 ft or less, building to 3 ft in the afternoon. .FRI NIGHT...W winds 10 to 15 kt. Seas 3 ft. .SAT...W winds 10 to 20 kt. Seas 3 to 4 ft. .SAT NIGHT...W winds 10 to 15 kt. Seas 3 to 4 ft. .SUN...W winds 10 to 15 kt. Seas 3 to 4 ft. Caribbean between 64W and 72W .THIS AFTERNOON...E winds 10 to 20 kt. Seas 2 ft or less Gulf of Venezuela, and 3 ft elsewhere. .TONIGHT...NE winds 10 kt Gulf of Venezuela, and NE 15 to 25 kt elsewhere. Seas 2 ft or less Gulf of Venezuela, and 3 to 4 ft elsewhere. .THU...SW winds less than 10 kt Gulf of Venezuela, and E 15 to 25 kt elsewhere. Seas 2 ft or less Gulf of Venezuela, and 3 to 5 ft elsewhere. .THU NIGHT...Variable winds less than 10 kt Gulf of Venezuela, and E 10 to 20 kt elsewhere. Seas 2 ft or less Gulf of Venezuela, and 3 to 5 ft elsewhere. .FRI...Variable winds less than 10 kt Gulf of Venezuela, and E 10 to 20 kt elsewhere. Seas 2 ft or less Gulf of Venezuela, and 3 to 5 ft elsewhere. .FRI NIGHT...NW 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. .SAT...Variable winds less than 10 kt Gulf of Venezuela, and SE 10 to 15 kt elsewhere. Seas 2 ft or less Gulf of Venezuela, and 3 to 5 ft elsewhere. .SAT NIGHT...Variable 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. .SUN...Variable winds less than 10 kt Gulf of Venezuela, and SE 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 .THIS AFTERNOON...S winds 10 to 15 kt. Seas 3 to 5 ft. .TONIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft. .THU...SE winds 10 to 15 kt. Seas 4 to 6 ft. .THU NIGHT...SE winds 10 to 15 kt. Seas 5 to 7 ft. .FRI...SE winds 10 to 20 kt. Seas 5 to 7 ft. .FRI NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. .SAT...E winds 10 to 20 kt. Seas 5 to 7 ft. .SAT NIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft. .SUN...E winds 10 to 15 kt. Seas 6 to 8 ft. Offshore Windward Islands and adjacent ATLC waters from 07N to 15N W of 55W .THIS AFTERNOON...SE winds 10 to 15 kt. Seas 3 to 4 ft. .TONIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. .THU...SE 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. .FRI NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. .SAT...E winds 10 to 20 kt. Seas 5 to 7 ft. .SAT NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. .SUN...E winds 10 to 15 kt. Seas 5 to 7 ft. Synopsis for the the SW N Atlantic including the Bahamas .SYNOPSIS...Hurricane Tammy is near 26.6N 59.3W at 11 AM EDT, and is moving northeast at 11 kt. Maximum sustained winds are 90 kt with gusts to 110 kt, and the minimum central pressure is 965 mb. Tammy will move to 28.2N 58.8W this evening, become extratropical and move to 29.8N 59.5W Thu morning, 30.5N 60.7W Thu evening, weaken as an extratropical cyclone near 31.0N 61.8W Fri morning, 31.2N 62.2W Fri evening, and 31.4N 62.7W Sat morning. Tammy will change little in intensity as it moves to near 31.7N 63.0W early Sun. A frontal boundary from 31N55W to the central Bahamas will dissipate today, but the gradient between Tammy and the decaying front combined with high pressure building N of the area will support a broad area of strong NE winds and rough seas across much of the area this week, mainly W of where the frontal boundary currently resides. ATLC waters from 27N to 31N W of 77W .THIS AFTERNOON...E winds 20 to 30 kt. Seas 8 to 11 ft. .TONIGHT...E winds 20 to 30 kt. Seas 8 to 12 ft. .THU...E winds 20 to 30 kt. Seas 9 to 12 ft. .THU NIGHT...E winds 20 to 30 kt. Seas 8 to 11 ft. .FRI...E winds 15 to 25 kt. Seas 8 to 11 ft. .FRI NIGHT...NE winds 20 to 30 kt. Seas 8 to 12 ft. .SAT...NE winds 15 to 25 kt. Seas 8 to 12 ft. .SAT NIGHT...NE winds 20 to 30 kt. Seas 8 to 11 ft. .SUN...NE winds 15 to 25 kt. Seas 7 to 10 ft. ATLC waters from 27N to 31N between 65W and 77W .THIS AFTERNOON...NE winds 20 to 30 kt. Seas 10 to 13 ft W of 70W, and 13 to 15 ft elsewhere. .TONIGHT...NE winds 20 to 30 kt. Seas 10 to 14 ft W of 70W, and 13 to 16 ft elsewhere. .THU...NE winds 20 to 30 kt. Seas 10 to 13 ft W of 70W, and 13 to 17 ft elsewhere. .THU NIGHT...NE winds 20 to 30 kt. Seas 10 to 14 ft W of 70W, and 14 to 19 ft elsewhere. .FRI...NE winds 20 to 30 kt W of 70W, and N 20 to 30 kt elsewhere. Seas 10 to 14 ft W of 70W, and 14 to 19 ft elsewhere. .FRI NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. .SAT...TROPICAL STORM CONDITIONS POSSIBLE. .SAT NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. .SUN...NE winds 15 to 25 kt W of 70W, and NE 10 to 20 kt elsewhere. Seas 7 to 10 ft. Bahamas N of 22N .THIS AFTERNOON...NE winds 20 to 30 kt. Seas 5 to 7 ft. .TONIGHT...NE winds 20 to 30 kt. Seas 6 to 8 ft. .THU...NE winds 20 to 30 kt. Seas 6 to 9 ft. .THU NIGHT...NE winds 20 to 30 kt. Seas 6 to 8 ft. .FRI...NE winds 15 to 25 kt. Seas 5 to 7 ft. .FRI NIGHT...NE winds 20 to 30 kt. Seas 6 to 8 ft. .SAT...NE winds 15 to 25 kt. Seas 5 to 7 ft. .SAT NIGHT...NE winds 20 to 30 kt. Seas 5 to 7 ft. .SUN...E winds 15 to 25 kt. Seas 4 to 6 ft. ATLC waters from 22N to 27N between 65W and the Bahamas .THIS AFTERNOON...NE winds 20 to 30 kt. Seas 10 to 14 ft. .TONIGHT...NE winds 20 to 30 kt W of 70W, and NE 15 to 25 kt elsewhere. Seas 10 to 14 ft. .THU...NE winds 20 to 30 kt W of 70W, and NE 15 to 25 kt elsewhere. Seas 11 to 14 ft. .THU NIGHT...NE winds 20 to 30 kt W of 70W, and NE 15 to 25 kt elsewhere. Seas 11 to 14 ft. .FRI...NE winds 15 to 25 kt W of 70W, and NE 10 to 20 kt elsewhere. Seas 11 to 14 ft. .FRI NIGHT...NE winds 15 to 25 kt W of 70W, and E 10 to 20 kt elsewhere. Seas 10 to 13 ft. .SAT...NE winds 15 to 25 kt W of 70W, and E 10 to 15 kt elsewhere. Seas 8 to 12 ft. .SAT NIGHT...NE winds 15 to 25 kt W of 70W, and E 10 to 20 kt elsewhere. Seas 8 to 12 ft W of 70W, and 7 to 9 ft elsewhere. .SUN...E winds 15 to 25 kt W of 70W, and E 10 to 15 kt elsewhere. Seas 8 to 11 ft W of 70W, and 6 to 8 ft elsewhere. ATLC waters S of 22N W of 65W .THIS AFTERNOON...NE winds 10 to 20 kt. Seas 6 to 9 ft. .TONIGHT...NE winds 15 to 25 kt. Seas 6 to 9 ft. .THU...NE winds 15 to 25 kt. Seas 7 to 10 ft. .THU NIGHT...NE winds 15 to 25 kt. Seas 7 to 10 ft. .FRI...NE winds 10 to 20 kt. Seas 7 to 10 ft. .FRI NIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft. .SAT...E winds 10 to 20 kt. Seas 6 to 9 ft. .SAT NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. .SUN...E winds 10 to 15 kt. Seas 4 to 6 ft. ATLC waters from 19N to 22N between 55W and 65W .THIS AFTERNOON...SW winds 10 to 20 kt. Seas 6 to 9 ft. .TONIGHT...SW winds 10 to 20 kt, shifting to SE 10 to 15 kt after midnight. Seas 7 to 10 ft. .THU...SE winds 10 to 15 kt. Seas 7 to 10 ft. .THU NIGHT...SE winds 10 to 15 kt. Seas 7 to 10 ft. .FRI...SE winds 10 to 15 kt. Seas 7 to 10 ft. .FRI NIGHT...SE winds 10 to 20 kt. Seas 7 to 9 ft. .SAT...SE winds 10 to 15 kt. Seas 7 to 9 ft. .SAT NIGHT...SE winds 10 to 15 kt. Seas 6 to 8 ft. .SUN...E winds 10 to 15 kt. Seas 6 to 7 ft.