000 FZNT31 KNHC 021523 OFFN20 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 1123 AM EDT Sat Sep 2 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 strong trades in the central Caribbean will diminish today with the relaxing pressure gradient. Gentle to moderate winds with slight to moderate seas will prevail through the weekend. Fresh winds will return in the central and eastern Caribbean by early next week and continue through Wed. NW Caribbean W of 85W .THIS AFTERNOON...E winds less than 10 kt. Seas 3 to 4 ft. .TONIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. .SUN...NE winds less than 10 kt. Seas 3 to 4 ft. .SUN NIGHT...NE winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 3 to 4 ft. .MON...E winds less than 10 kt. Seas 3 to 4 ft. .MON NIGHT...E winds less than 10 kt. Seas 3 to 4 ft. .TUE...SE winds less than 10 kt. Seas 3 ft. .TUE NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. .WED...E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 3 to 4 ft. .WED NIGHT...E winds less than 10 kt. Seas 3 ft. Caribbean N of 15N between 72W and 85W .THIS AFTERNOON...E winds 10 to 15 kt S of 18N, and NE less than 10 kt elsewhere. Seas 3 to 5 ft. .TONIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft. .SUN...E winds less than 10 kt S of 18N, and NE 10 to 15 kt elsewhere. Seas 3 to 4 ft. .SUN NIGHT...E winds less than 10 kt. Seas 3 to 4 ft in the evening, subsiding to 2 ft or less. .MON...SE winds less than 10 kt. Seas 3 ft. .MON NIGHT...E winds less than 10 kt, increasing to 10 to 15 kt after midnight. 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 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. Caribbean from 11N to 15N W of 72W .THIS AFTERNOON...E winds 15 to 20 kt within 90 nm of coast of Colombia, and NE 10 to 15 kt elsewhere. Seas 5 to 7 ft. .TONIGHT...NE winds 15 to 20 kt within 90 nm of coast of Colombia, and NE 10 to 15 kt elsewhere. Seas 4 to 6 ft. .SUN...NE winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 3 to 5 ft. .SUN NIGHT...NE winds 10 to 15 kt within 90 nm of coast of Colombia, and NE less than 10 kt elsewhere. Seas 3 to 4 ft. .MON...E winds less than 10 kt. Seas 3 to 5 ft. .MON NIGHT...NE winds less than 10 kt, shifting to E after midnight. 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...E winds 10 to 20 kt. Seas 3 to 5 ft. .WED NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft. SW Caribbean S of 11N .THIS AFTERNOON...NE winds 10 to 15 kt. Seas 5 to 7 ft. .TONIGHT...N winds less than 10 kt. Seas 5 to 7 ft. .SUN...N winds less than 10 kt. Seas 3 to 5 ft. .SUN NIGHT...Variable winds less than 10 kt, becoming NW less than 10 kt after midnight. Seas 3 to 4 ft. .MON...Variable winds less than 10 kt. Seas 3 ft. .MON NIGHT...Variable winds less than 10 kt. Seas 3 ft in the evening, subsiding to 2 ft or less. .TUE...Variable winds less than 10 kt. Seas 2 ft or less. .TUE NIGHT...Variable winds less than 10 kt. Seas 2 ft or less. .WED...Variable winds less than 10 kt. Seas 2 ft or less, building to 3 ft in the afternoon. .WED NIGHT...N winds less than 10 kt. Seas 3 to 4 ft. Caribbean between 64W and 72W .THIS AFTERNOON...E winds 10 to 15 kt. Seas 3 to 5 ft. .TONIGHT...NE winds 10 to 20 kt Gulf of Venezuela, and E 10 to 15 kt elsewhere. Seas 3 to 5 ft. .SUN...Gulf of Venezuela, E winds 10 to 15 kt, shifting to NE in the afternoon. Elsewhere, E winds 10 to 15 kt. Seas 2 ft or less Gulf of Venezuela, and 3 to 5 ft elsewhere. .SUN NIGHT...E winds 10 to 20 kt. Seas 3 ft Gulf of Venezuela, and 4 to 6 ft elsewhere. .MON...E winds 10 to 20 kt. Seas 4 to 6 ft. .MON NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. .TUE...E winds 10 to 20 kt. Seas 5 to 7 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 4 to 6 ft. Offshore Leeward Islands and adjacent ATLC waters from 15N to 19N W of 55W .THIS AFTERNOON...SE winds 10 to 15 kt. Seas 3 to 4 ft. .TONIGHT...SE winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 3 to 5 ft. .SUN...SE winds 10 to 15 kt. Seas 4 to 6 ft. .SUN NIGHT...E winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 4 to 6 ft. .MON...E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 4 to 6 ft. .MON NIGHT...E winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 4 to 6 ft. .TUE...E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 4 to 6 ft. .TUE NIGHT...E winds less than 10 kt. Seas 4 to 6 ft. .WED...E winds less than 10 kt. Seas 4 to 6 ft. .WED NIGHT...E winds less than 10 kt. Seas 4 to 6 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 5 ft. .SUN...E winds 10 to 15 kt. Seas 4 to 5 ft. .SUN NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .MON...E winds 10 to 15 kt. Seas 4 to 6 ft. .MON NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .TUE...E winds 10 to 15 kt. Seas 4 to 6 ft. .TUE NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .WED...E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 3 to 5 ft. .WED NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. Synopsis for the the SW N Atlantic including the Bahamas .SYNOPSIS...Post-Tropical Cyclone Idalia is near 31.6N 63.5W at 11 AM EDT, and is moving east at 8 kt. Maximum sustained winds are 50 kt with gusts to 60 kt, and the minimum central pressure is 999 mb. Idalia will become extratropical and move to 31.7N 62.5W this evening, 32.9N 60.6W Sun morning, 34.7N 58.8W Sun evening, 36.8N 57.4W Mon morning, 39.0N 56.9W Mon evening, and 40.8N 57.4W Tue morning. Idalia will change little in intensity as it moves near 42.3N 58.7W early Wed. Gale force winds and rough to very rough seas associated with Idalia will impact the north waters through the weekend. Conditions will improve by Mon night. Meanwhile, Tropical Storm Gert is near 27.8N 54.1W at 11 AM EDT, and is moving north-northeast at 3 kt. Maximum sustained winds are 45 kt with gusts to 55 kt, and the minimum central pressure is 999 mb. Gert will move to 28.5N 53.6W this evening, 30.1N 52.8W Sun morning, 32.6N 51.8W Sun evening, and dissipate Mon morning. Gert will slowly move away from the eastern offshore waters this evening and N of the area by Sun evening. ATLC waters from 27N to 31N W of 77W .THIS AFTERNOON...NE winds 10 to 15 kt. Seas 7 to 9 ft. .TONIGHT...NE winds 10 to 15 kt. Seas 6 to 8 ft. .SUN...NE winds 10 to 15 kt. Seas 6 to 8 ft. .SUN NIGHT...NE winds 10 to 15 kt. Seas 6 to 8 ft. .MON...NE winds less than 10 kt. Seas 5 to 7 ft. .MON NIGHT...E winds less than 10 kt. Seas 4 to 6 ft. .TUE...E winds less than 10 kt in the morning, becoming variable winds less than 10 kt. Seas 4 to 6 ft. .TUE NIGHT...Variable winds less than 10 kt. Seas 4 to 5 ft. .WED...NW winds less than 10 kt. Seas 3 to 4 ft. .WED NIGHT...NW winds less than 10 kt, shifting to SW after midnight. Seas 3 to 4 ft. ATLC waters from 27N to 31N between 65W and 77W .THIS AFTERNOON...N winds 10 to 20 kt. Seas 9 to 13 ft W of 70W, and 13 to 18 ft elsewhere. .TONIGHT...N winds 10 to 20 kt. Seas 8 to 13 ft W of 70W, and 12 to 17 ft elsewhere. .SUN...N winds 10 to 15 kt. Seas 8 to 11 ft W of 70W, and 10 to 15 ft elsewhere. .SUN NIGHT...NE winds 10 to 15 kt, diminishing to less than 10 kt after midnight. Seas 8 to 11 ft. .MON...NE winds less than 10 kt. Seas 6 to 9 ft. .MON NIGHT...NE winds less than 10 kt. Seas 6 to 7 ft. .TUE...Variable winds less than 10 kt. Seas 5 to 6 ft. .TUE NIGHT...Variable winds less than 10 kt, becoming NW less than 10 kt after midnight. Seas 4 to 5 ft. .WED...NW winds less than 10 kt. Seas 4 to 5 ft. .WED NIGHT...SW winds less than 10 kt. Seas 3 to 5 ft. Bahamas N of 22N .THIS AFTERNOON...NE winds 10 to 15 kt. Seas 4 to 6 ft. .TONIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. .SUN...NE winds 10 to 15 kt. Seas 4 to 6 ft. .SUN NIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft. .MON...E winds less than 10 kt. Seas 3 to 5 ft. .MON NIGHT...E winds less than 10 kt. Seas 3 to 4 ft. .TUE...NE winds less than 10 kt. Seas 3 to 4 ft. .TUE NIGHT...NE winds less than 10 kt. Seas 3 to 4 ft. .WED...NE winds less than 10 kt. Seas 3 to 4 ft. .WED NIGHT...NE winds less than 10 kt. Seas 3 ft. ATLC waters from 22N to 27N between 65W and the Bahamas .THIS AFTERNOON...NW winds 10 to 15 kt. Seas 8 to 11 ft. .TONIGHT...W of 70W, N winds 10 to 15 kt. Elsewhere, W winds 10 to 15 kt, diminishing to less than 10 kt after midnight. Seas 8 to 11 ft. .SUN...NE winds 10 to 15 kt W of 70W, and W less than 10 kt elsewhere. Seas 7 to 10 ft. .SUN NIGHT...NE winds less than 10 kt. Seas 7 to 9 ft. .MON...SE winds less than 10 kt. Seas 6 to 8 ft. .MON NIGHT...E winds less than 10 kt. Seas 6 to 7 ft. .TUE...E winds less than 10 kt. Seas 5 to 6 ft. .TUE NIGHT...E winds less than 10 kt. Seas 5 to 6 ft. .WED...E winds less than 10 kt. Seas 4 to 5 ft. .WED NIGHT...E winds less than 10 kt. Seas 4 to 5 ft. ATLC waters S of 22N W of 65W .THIS AFTERNOON...E winds less than 10 kt. Seas 3 to 5 ft. .TONIGHT...SE winds less than 10 kt. Seas 4 to 6 ft. .SUN...SE winds less than 10 kt. Seas 4 to 6 ft. .SUN NIGHT...SE winds less than 10 kt. Seas 4 to 6 ft. .MON...SE winds less than 10 kt. Seas 4 to 6 ft. .MON NIGHT...SE winds less than 10 kt. Seas 4 to 6 ft. .TUE...SE winds less than 10 kt. Seas 3 to 5 ft. .TUE NIGHT...SE winds less than 10 kt. Seas 3 to 5 ft. .WED...S winds less than 10 kt. Seas 3 to 5 ft. .WED NIGHT...SE winds less than 10 kt. Seas 3 to 5 ft. ATLC waters from 19N to 22N between 55W and 65W .THIS AFTERNOON...S winds 10 kt. Seas 4 to 5 ft. .TONIGHT...S winds less than 10 kt. Seas 5 to 7 ft. .SUN...S winds less than 10 kt. Seas 5 to 7 ft. .SUN NIGHT...S winds less than 10 kt. Seas 6 to 7 ft. .MON...S winds less than 10 kt. Seas 6 to 7 ft. .MON NIGHT...Variable winds less than 10 kt, becoming E less than 10 kt after midnight. Seas 5 to 6 ft. .TUE...SE winds less than 10 kt. Seas 5 to 6 ft. .TUE NIGHT...Variable winds less than 10 kt, becoming E less than 10 kt after midnight. Seas 5 to 6 ft. .WED...E winds less than 10 kt in the morning, becoming variable winds less than 10 kt. Seas 5 to 6 ft. .WED NIGHT...E winds less than 10 kt. Seas 4 to 5 ft.