


Offshore Forecast
Issued by NWS
Issued by NWS
350 FZNT25 KWNM 212055 OFFN03 NAVTEX Marine Forecast for southeast U.S. waters NWS Ocean Prediction Center Washington DC 455 PM EDT Thu Aug 21 2025 Conditions given represent the highest within that period. Locally higher winds and seas can be expected in and near tstms. ...Please refer to Coastal Waters Forecasts (CWF) available through NOAA Weather Radio and other means for detailed coastal waters forecasts... .SYNOPSIS...Large hurricane Erin will move N and NE away from the waters tonight through Sat. Ongoing long period SE to S swell from Erin will slowly back to E and NE by later tonight through Fri night before gradually subsiding Sat and Sat night. A stationary front will form across the waters Fri and Fri night as high pressure builds N of the waters. A weak area of low pressure will form along the front off the South Carolina coast Sat night, then lift NE away from the waters Sun into Sun night while the area of high pressure to the N shifts E. A cold front will approach the area from the W late Sun night, then move E across the area Mon and Mon night. Another cold front or low pressure trough will move over the region Tue and Tue night. For more information on Hurricane Erin, please closely monitor the latest forecasts from the National Hurricane Center. Murrells Inlet to 31N .TONIGHT...N to NE winds 15 to 25 kt. Seas 9 to 16 ft. Scattered showers and chance of tstms. .FRI...E winds 5 to 15 kt. Seas 8 to 12 ft. Scattered showers and tstms. .FRI NIGHT...E winds 5 to 15 kt. Seas 7 to 11 ft. Showers and tstms likely. .SAT...E winds 10 to 20 kt. Seas 6 to 9 ft. Scattered showers and tstms. .SAT NIGHT...S to SE winds 10 to 20 kt. Seas 5 to 9 ft. .SUN...W to SW winds 5 to 15 kt. Seas 5 to 8 ft. .SUN NIGHT...W winds 10 to 20 kt. Seas 5 to 8 ft. .MON...W winds 10 to 20 kt. Seas 5 to 8 ft. .MON NIGHT...W winds 5 to 15 kt. Seas 4 to 7 ft. .TUE...Variable winds less than 10 kt. Seas 3 to 6 ft. .TUE NIGHT...Variable winds less than 10 kt. Seas 3 to 4 ft. South of 31N .TONIGHT...W winds 10 to 20 kt. Seas 7 to 12 ft. Scattered tstms. .FRI...E to SE winds less than 10 kt. Seas 6 to 9 ft. Scattered showers and tstms. .FRI NIGHT...SE winds 5 to 15 kt. Seas 6 to 9 ft. Scattered showers and tstms. .SAT...S to SW winds less than 10 kt. Seas 5 to 8 ft. Scattered showers and tstms. .SAT NIGHT...W to SW winds 5 to 15 kt. Seas 5 to 8 ft. .SUN...W winds 5 to 15 kt. Seas 5 to 7 ft. .SUN NIGHT...W winds 5 to 15 kt. Seas 5 to 7 ft. .MON...W winds 5 to 15 kt. Seas 5 to 7 ft. .MON NIGHT...W winds 5 to 15 kt. Seas 4 to 7 ft. .TUE...Variable winds 5 to 10 kt. Seas 3 to 5 ft. .TUE NIGHT...Variable winds less than 10 kt. Seas 3 to 4 ft.