Offshore Forecast
Issued by NWS
Issued by NWS
340 FZNT32 KNHC 250320 OFFN21 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 1120 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 19.9N 85.5W at 11 PM EDT, and is moving west-northwest at 9 kt. Maximum sustained winds are 50 kt with gusts to 60 kt, and the minimum central pressure is 991 mb. Helene will strengthen to a hurricane near 21.1N 86.3W Wed morning, move to 22.7N 86.4W Wed evening, then be near 25.4N 85.5W Thu morning. Hurricane Helene will be at 29.5N 84.2W Thu evening, then move inland and weaken to a tropical depression near 34.0N 84.5W Fri morning. Gulf of Mexico N of 26N W of 87W .OVERNIGHT...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 25 to 35 kt. Seas 6 to 9 ft, building to 8 to 13 ft in the afternoon. .THU NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. N winds 20 to 30 kt. Seas 9 to 14 ft. .FRI...NW winds 15 to 25 kt. Seas 7 to 10 ft, subsiding to 5 to 7 ft in the afternoon. .FRI NIGHT...W winds 10 to 15 kt. Seas 4 to 6 ft. .SAT...W winds 10 to 15 kt. Seas 3 to 4 ft. .SAT NIGHT...W 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... .OVERNIGHT...TROPICAL STORM CONDITIONS POSSIBLE. E winds 15 to 25 kt, increasing to 25 to 35 kt after midnight. Seas 3 to 4 ft. .WED...TROPICAL STORM CONDITIONS POSSIBLE. NE winds 30 to 40 kt. Seas 4 to 6 ft. .WED NIGHT...TROPICAL STORM CONDITIONS EXPECTED. N winds 30 to 40 kt. Seas 7 to 10 ft. .THU...TROPICAL STORM CONDITIONS POSSIBLE. NW winds 25 to 35 kt. Seas 7 to 10 ft. .THU NIGHT...NW winds 15 to 25 kt. Seas 7 to 10 ft. .FRI...NW winds 10 to 15 kt. Seas 6 to 8 ft. .FRI NIGHT...NE winds less than 10 kt. Seas 4 to 6 ft. .SAT...N winds less than 10 kt. Seas 3 to 5 ft. .SAT NIGHT...E winds less than 10 kt. Seas 3 ft in the evening, subsiding to 2 ft or less. .SUN...NE winds less than 10 kt. Seas 2 ft or less. SW Gulf of Mexico S of 22N W of 87W ...TROPICAL STORM WARNING... .OVERNIGHT...TROPICAL STORM CONDITIONS EXPECTED. Within 60 nm of coast of Veracruz, N winds less than 10 kt. Elsewhere, N winds 15 to 25 kt, increasing to 30 to 40 kt after midnight. Seas 2 ft or less. .WED...TROPICAL STORM CONDITIONS POSSIBLE. NW winds less than 10 kt within 60 nm of coast of Veracruz, and NW 30 to 40 kt elsewhere. Seas 2 ft or less within 60 nm of coast of Veracruz, and 3 to 4 ft elsewhere. .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 20 to 30 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. Seas 2 ft or less within 60 nm of coast of Veracruz, and 4 to 6 ft elsewhere. .THU NIGHT...Within 60 nm of coast of Veracruz, NW winds 10 to 15 kt. Elsewhere, NW winds 10 to 15 kt, shifting to W after midnight. Seas 3 to 5 ft within 60 nm of coast of Veracruz, and 4 to 6 ft elsewhere. .FRI...W winds 10 to 15 kt. Seas 3 to 5 ft. .FRI NIGHT...Within 60 nm of coast of Veracruz, NW winds 10 to 15 kt. Elsewhere, NW winds 10 to 15 kt, shifting to N after midnight. Seas 3 to 5 ft. .SAT...Within 60 nm of coast of Veracruz, NW winds 10 to 15 kt. Elsewhere, SW winds less than 10 kt, shifting to W in the afternoon. Seas 3 to 4 ft. .SAT NIGHT...N winds 10 to 15 kt. Seas 3 to 4 ft. .SUN...NW 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... .OVERNIGHT...TROPICAL STORM CONDITIONS. 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 35 to 45 kt, increasing to 55 to 65 kt in the afternoon. Seas 7 to 10 ft, building to 9 to 14 ft in the afternoon. .WED NIGHT...HURRICANE CONDITIONS EXPECTED. E winds 60 to 70 kt, becoming SE 70 to 80 kt after midnight. Seas 11 to 16 ft. .THU...HURRICANE CONDITIONS EXPECTED. S winds 75 to 95 kt. Seas 16 to 21 ft. .THU NIGHT...HURRICANE CONDITIONS POSSIBLE. W winds 80 to 100 kt, becoming SW 35 to 45 kt after midnight. Seas 14 to 19 ft, subsiding to 9 to 14 ft after midnight. .FRI...SW winds 15 to 25 kt. Seas 7 to 10 ft. .FRI NIGHT...SW winds 10 to 20 kt. Seas 5 to 7 ft. .SAT...SW winds 10 to 15 kt. Seas 3 to 4 ft. .SAT NIGHT...S winds less than 10 kt. Seas 3 to 4 ft. .SUN...S winds less than 10 kt. Seas 3 ft.