Offshore Forecast
Issued by NWS
Issued by NWS
602 FZNT32 KNHC 241512 OFFN21 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 1112 AM EDT Tue Sep 24 2024 Marine Weather HF Voice Broadcast for the Gulf of Mexico 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...Tropical Storm Helene is near 19.5N 84.3W at 11 AM EDT, and is moving northwest at 10 kt. Maximum sustained winds are 40 kt with gusts to 50 kt, and the minimum central pressure is 1000 mb. Helene will move to 20.3N 85.2W this evening, strengthen to a hurricane near 21.5N 86.3W Wed morning, 23.2N 86.3W Wed evening, 25.9N 85.4W Thu morning, 29.7N 84.3W Thu evening, and weaken to a tropical storm near 33.9N 83.9W Fri morning. Helene will weaken as a post-tropical cyclone near 39.7N 86.8W early Sat. Helene is expected to become a large and powerful hurricane. Gulf of Mexico N of 26N W of 87W ...TROPICAL STORM WARNING... .THIS AFTERNOON...E winds 10 kt. Seas 2 ft or less. .TONIGHT...E winds 10 to 15 kt. Seas 2 ft or less, building to 3 ft after midnight. .WED...NE winds 10 to 20 kt. Seas 3 to 4 ft. .WED NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. NE winds 20 to 30 kt. Seas 4 to 6 ft. .THU...TROPICAL STORM CONDITIONS POSSIBLE. N winds 25 to 35 kt. Seas 5 to 7 ft, building to 7 to 10 ft in the afternoon. .THU NIGHT...NW winds 20 to 30 kt. Seas 8 to 11 ft. .FRI...NW winds 15 to 25 kt. Seas 6 to 9 ft, subsiding to 4 to 6 ft in the afternoon. .FRI NIGHT...W winds 10 to 15 kt. Seas 3 to 5 ft. .SAT...W winds 10 to 15 kt. Seas 3 ft. Gulf of Mexico from 22N to 26N W of 87W ...TROPICAL STORM WARNING... .THIS AFTERNOON...E winds 10 to 15 kt. Seas 3 ft. .TONIGHT...TROPICAL STORM CONDITIONS POSSIBLE. NE winds 15 to 25 kt. Seas 3 to 5 ft. .WED...TROPICAL STORM CONDITIONS EXPECTED. NE winds 35 to 45 kt. Seas 4 to 6 ft. .WED NIGHT...TROPICAL STORM CONDITIONS EXPECTED. N winds 35 to 45 kt. Seas 6 to 9 ft. .THU...TROPICAL STORM CONDITIONS POSSIBLE. NW winds 30 to 40 kt, diminishing to 15 to 25 kt in the afternoon. Seas 6 to 8 ft. .THU NIGHT...NW winds 15 to 25 kt, diminishing to 10 to 15 kt after midnight. Seas 6 to 8 ft. .FRI...N winds less than 10 kt. Seas 4 to 6 ft. .FRI NIGHT...E winds less than 10 kt. Seas 3 to 5 ft. .SAT...E winds less than 10 kt. Seas 3 to 4 ft. SW Gulf of Mexico S of 22N W of 87W ...TROPICAL STORM WARNING... .THIS AFTERNOON...NW winds less than 10 kt within 60 nm of coast of Veracruz, and E 10 to 15 kt elsewhere. Seas 2 ft or less. .TONIGHT...TROPICAL STORM CONDITIONS POSSIBLE. N winds less than 10 kt within 60 nm of coast of Veracruz, and N 15 to 25 kt elsewhere. Seas 2 ft or less. .WED...TROPICAL STORM CONDITIONS EXPECTED. NW winds less than 10 kt within 60 nm of coast of Veracruz, and NW 35 to 45 kt elsewhere. Seas 2 ft or less, building to 3 ft in the afternoon. .WED NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. Within 60 nm of coast of Veracruz, NW winds less than 10 kt. Elsewhere, NW winds 30 to 40 kt, diminishing to 15 to 25 kt after midnight. Seas 2 ft or less within 60 nm of coast of Veracruz, and 3 to 5 ft elsewhere. .THU...NW winds 10 to 15 kt within 60 nm of coast of Veracruz, and W 15 to 25 kt elsewhere. Within 60 nm of coast of Veracruz, seas 2 ft or less, building to 3 ft in the afternoon. Elsewhere, seas 3 to 5 ft. .THU NIGHT...Within 60 nm of coast of Veracruz, NW winds 10 to 15 kt. Elsewhere, NW winds 10 to 15 kt, diminishing to less than 10 kt after midnight. Seas 3 to 5 ft. .FRI...NW winds 10 to 15 kt within 60 nm of coast of Veracruz, and W less than 10 kt elsewhere. Seas 3 to 4 ft. .FRI NIGHT...Within 60 nm of coast of Veracruz, NW winds 10 to 15 kt. Elsewhere, N winds less than 10 kt, shifting to E after midnight. Seas 3 to 4 ft. .SAT...NW winds 10 to 15 kt within 60 nm of coast of Veracruz, and W less than 10 kt elsewhere. Seas 3 to 4 ft. Gulf of Mexico E of 87W ...HURRICANE WARNING... .THIS AFTERNOON...E winds 15 to 25 kt. Seas 3 to 5 ft. .TONIGHT...TROPICAL STORM CONDITIONS EXPECTED. E winds 20 to 30 kt, increasing to 30 to 40 kt after midnight. Seas 4 to 6 ft. .WED...TROPICAL STORM CONDITIONS EXPECTED. E winds 40 to 50 kt, increasing to 60 to 70 kt in the afternoon. Seas 7 to 10 ft. .WED NIGHT...HURRICANE CONDITIONS EXPECTED. E winds 65 to 75 kt, becoming SE 75 to 85 kt after midnight. Seas 8 to 11 ft, building to 10 to 15 ft after midnight. .THU...HURRICANE CONDITIONS POSSIBLE. S winds 85 to 95 kt, shifting to SW 75 to 95 kt in the afternoon. Seas 15 to 20 ft. .THU NIGHT...HURRICANE CONDITIONS POSSIBLE. .FRI...SW winds 15 to 25 kt. Seas 7 to 10 ft. .FRI NIGHT...SW winds 10 to 15 kt. Seas 4 to 6 ft. .SAT...SW winds 10 to 15 kt. Seas 3 to 4 ft.