Offshore Forecast
Issued by NWS
Issued by NWS
851 FZNT32 KNHC 242102 OFFN21 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 502 PM 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 19.7N 84.7W at 5 PM EDT, and is moving west-northwest at 10 kt. Maximum sustained winds are 45 kt with gusts to 55 kt, and the minimum central pressure is 995 mb. Helene will move to 20.4N 86.0W Wed morning, strengthen to a hurricane near 21.7N 86.6W Wed afternoon, 23.7N 86.1W Thu morning, 27.0N 84.9W Thu afternoon, move inland and weaken to a tropical storm near 31.5N 84.0W Fri morning, and move inland and weaken to a tropical depression near 35.5N 84.8W Fri afternoon. Helene will move inland near 38.2N 89.0W Sat afternoon. Helene is expected to become a large and powerful hurricane. Gulf of Mexico N of 26N W of 87W .TONIGHT...E winds 10 to 15 kt. Seas 2 ft or less. .WED...NE winds 10 to 20 kt. Seas 2 ft or less, building to 3 ft in the afternoon. .WED NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. NE winds 20 to 30 kt. Seas 4 to 6 ft. .THU...TROPICAL STORM CONDITIONS POSSIBLE. N winds 20 to 30 kt. Seas 7 to 10 ft, building to 9 to 14 ft in the afternoon. .THU NIGHT...NW winds 20 to 30 kt. Seas 11 to 16 ft. .FRI...NW winds 15 to 25 kt. Seas 8 to 12 ft, subsiding to 6 to 9 ft in the afternoon. .FRI NIGHT...W winds 10 to 15 kt. Seas 5 to 7 ft. .SAT...W winds 10 to 15 kt. Seas 3 to 5 ft. .SAT NIGHT...SW winds less than 10 kt. Seas 3 ft in the evening, subsiding to 2 ft or less. .SUN...NW winds less than 10 kt. Seas 2 ft or less. Gulf of Mexico from 22N to 26N W of 87W ...TROPICAL STORM WARNING... .TONIGHT...TROPICAL STORM CONDITIONS POSSIBLE. NE winds 15 to 25 kt. Seas 2 ft or less, building to 3 to 4 ft after midnight. .WED...TROPICAL STORM CONDITIONS POSSIBLE. NE winds 20 to 30 kt, increasing to 35 to 45 kt in the afternoon. Seas 4 to 6 ft. .WED NIGHT...TROPICAL STORM CONDITIONS EXPECTED. N winds 35 to 45 kt. Seas 8 to 11 ft. .THU...TROPICAL STORM CONDITIONS POSSIBLE. NW winds 25 to 35 kt, diminishing to 15 to 25 kt in the afternoon. Seas 8 to 11 ft. .THU NIGHT...NW winds 15 to 25 kt, diminishing to 10 to 15 kt after midnight. Seas 8 to 11 ft. .FRI...NW winds less than 10 kt. Seas 6 to 9 ft. .FRI NIGHT...E winds less than 10 kt. Seas 5 to 7 ft. .SAT...E winds less than 10 kt. Seas 4 to 6 ft. .SAT NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft in the evening, subsiding to 2 ft or less. .SUN...E winds 10 to 15 kt, shifting to NE in the afternoon. Seas 2 ft or less. SW Gulf of Mexico S of 22N W of 87W ...TROPICAL STORM WARNING... .TONIGHT...TROPICAL STORM CONDITIONS POSSIBLE. Within 60 nm of coast of Veracruz, N winds less than 10 kt. Elsewhere, N winds 10 to 20 kt, increasing to 20 to 30 kt after midnight. Seas 2 ft or less. .WED...TROPICAL STORM CONDITIONS POSSIBLE. Within 60 nm of coast of Veracruz, NW winds less than 10 kt, seas 2 ft or less. Elsewhere, N winds 25 to 35 kt, becoming NW 35 to 45 kt in the afternoon,Seas 2 ft or less, building to 3 to 4 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 35 to 45 kt, diminishing to 25 to 35 kt after midnight. Seas 2 ft or less within 60 nm of coast of Veracruz, and 4 to 6 ft elsewhere. .THU...NW winds 10 to 15 kt within 60 nm of coast of Veracruz, and W 15 to 25 kt elsewhere. Seas 2 ft or less within 60 nm of coast of Veracruz, and 3 to 5 ft elsewhere. .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 4 to 6 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 5 ft. .FRI NIGHT...Within 60 nm of coast of Veracruz, NW winds 10 to 15 kt. Elsewhere, NW winds less than 10 kt, shifting to E after midnight. Seas 3 to 5 ft. .SAT...NW winds 10 to 15 kt within 60 nm of coast of Veracruz, and SW less than 10 kt elsewhere. Seas 3 to 5 ft. .SAT NIGHT...N winds 10 to 15 kt. Seas 3 to 4 ft. .SUN...W winds 10 to 15 kt. Seas 3 ft in the morning, subsiding to 2 ft or less. Gulf of Mexico E of 87W ...HURRICANE WARNING... .TONIGHT...TROPICAL STORM CONDITIONS EXPECTED. E winds 25 to 35 kt. Seas 3 to 4 ft, building to 5 to 7 ft after midnight. .WED...TROPICAL STORM CONDITIONS EXPECTED. E winds 30 to 40 kt, increasing to 50 to 60 kt in the afternoon. Seas 7 to 10 ft, building to 10 to 15 ft in the afternoon. .WED NIGHT...HURRICANE CONDITIONS EXPECTED. E winds 60 to 75 kt. Seas 14 to 19 ft. .THU...HURRICANE CONDITIONS EXPECTED. SE winds 75 to 85 kt, shifting to SW 75 to 95 kt in the afternoon. Seas 17 to 22 ft. .THU NIGHT...HURRICANE CONDITIONS POSSIBLE. W winds 75 to 95 kt, becoming SW 35 to 45 kt after midnight. Seas 15 to 20 ft, subsiding to 10 to 15 ft after midnight. .FRI...SW winds 15 to 25 kt. Seas 7 to 10 ft. .FRI NIGHT...SW winds 10 to 15 kt. Seas 5 to 7 ft. .SAT...SW winds 10 to 15 kt. Seas 3 to 5 ft. .SAT NIGHT...S winds 10 to 15 kt. Seas 3 to 4 ft. .SUN...S winds 10 to 15 kt, shifting to SW in the afternoon. Seas 3 ft.