


Offshore Forecast
Issued by NWS
Issued by NWS
463 FZNT32 KNHC 180921 OFFN21 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 521 AM EDT Mon Aug 18 2025 Marine Weather HF Voice Broadcast for the Gulf of America 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...Weak high pressure will drift about the NW Gulf through Wed night and allow for generally light to gentle winds and slight seas. Atlantic high pressure will build westward along about 23N Thu, as Hurricane Erin moves northward of Bermuda. Gulf of America N of 26N W of 87W .TODAY...Variable winds less than 10 kt, becoming NE less than 10 kt in the afternoon. Seas 2 ft or less. .TONIGHT...E winds less than 10 kt. Seas 2 ft or less. .TUE...Variable winds less than 10 kt. Seas 2 ft or less. .TUE NIGHT...Variable winds less than 10 kt, becoming E less than 10 kt after midnight. Seas 2 ft or less. .WED...Variable winds less than 10 kt, becoming NE less than 10 kt in the afternoon. Seas 2 ft or less. .WED NIGHT...Variable winds less than 10 kt. Seas 2 ft or less. .THU...Variable winds less than 10 kt. Seas 2 ft or less. .THU NIGHT...Variable winds less than 10 kt, becoming S less than 10 kt after midnight. Seas 2 ft or less. .FRI...W winds less than 10 kt. Seas 2 ft or less. .FRI NIGHT...Variable winds less than 10 kt, becoming S less than 10 kt after midnight. Seas 2 ft or less. Gulf of America from 22N to 26N W of 87W .TODAY...Variable winds less than 10 kt. Seas 2 ft or less. .TONIGHT...E winds less than 10 kt. Seas 2 ft or less. .TUE...Variable winds less than 10 kt. Seas 2 ft or less. .TUE NIGHT...E winds less than 10 kt. Seas 2 ft or less. .WED...Variable winds less than 10 kt. Seas 2 ft or less. .WED NIGHT...Variable winds less than 10 kt. Seas 2 ft or less. .THU...Variable winds less than 10 kt. Seas 2 ft or less. .THU NIGHT...Variable winds less than 10 kt, becoming SE less than 10 kt after midnight. Seas 2 ft or less. .FRI...S winds less than 10 kt. Seas 2 ft or less. .FRI NIGHT...SE winds less than 10 kt. Seas 2 ft or less. SW Gulf of America S of 22N W of 87W .TODAY...Variable winds less than 10 kt. Seas 2 ft or less. .TONIGHT...NE winds less than 10 kt. Seas 2 ft or less. .TUE...Variable winds less than 10 kt. Seas 2 ft or less. .TUE NIGHT...N winds less than 10 kt in the evening, becoming variable winds less than 10 kt. Seas 2 ft or less. .WED...Variable winds less than 10 kt. Seas 2 ft or less. .WED NIGHT...Variable winds less than 10 kt. Seas 2 ft or less. .THU...Variable winds less than 10 kt. Seas 2 ft or less. .THU NIGHT...E winds less than 10 kt. Seas 2 ft or less. .FRI...SE winds less than 10 kt in the morning, becoming variable winds less than 10 kt. Seas 2 ft or less. .FRI NIGHT...SE winds less than 10 kt. Seas 2 ft or less. Gulf of America E of 87W .TODAY...Variable winds less than 10 kt. Seas 2 ft or less. .TONIGHT...Variable winds less than 10 kt. Seas 2 ft or less. .TUE...Variable winds less than 10 kt. Seas 2 ft or less. .TUE NIGHT...N winds less than 10 kt in the evening, becoming variable winds less than 10 kt. Seas 2 ft or less. .WED...Variable winds less than 10 kt. Seas 2 ft or less. .WED NIGHT...Variable winds less than 10 kt. Seas 2 ft or less. .THU...Variable winds less than 10 kt. Seas 2 ft or less. .THU NIGHT...Variable winds less than 10 kt, becoming S less than 10 kt after midnight. Seas 2 ft or less. .FRI...SW winds less than 10 kt. Seas 2 ft or less. .FRI NIGHT...Variable winds less than 10 kt, becoming SW less than 10 kt after midnight. Seas 2 ft or less.