


Offshore Forecast
Issued by NWS
Issued by NWS
519 FZNT23 KWNM 220850 OFFN01 NAVTEX Marine Forecast for NE US waters NWS Ocean Prediction Center Washington DC 450 AM EDT Fri Aug 22 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...The center of Hurricane Erin will track NE along outer Mid-Atlantic waters this morning. Erin will then move farther away from the area over the N Atlantic late today into Sat night while becoming extratropical sometime Sat. Long period S swell from Hurricane Erin will back to the SE and E by today and tonight. A high pressure ridge will move E across the waters tonight and Sat, then shift E of the area Sat night into Sun. A cold front will gradually approach the waters from the W late Sun night, then move E across the area Mon and Mon night as developing low pressure tracks NE along the front. Another cold front 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. Eastport Maine to Cape Cod ...TROPICAL STORM WARNING... .TODAY...N winds 25 to 35 kt. Seas 14 to 23 ft. Chance of showers. .TONIGHT...Variable winds 10 to 20 kt. Seas 11 to 18 ft. .SAT...S winds 10 to 20 kt. Seas 6 to 11 ft. .SAT NIGHT...S winds 10 to 20 kt. Seas 5 to 8 ft. .SUN...S winds 10 to 20 kt. Seas 4 to 6 ft. .SUN NIGHT...S winds 15 to 25 kt. Seas 3 to 6 ft. .MON...S to SE winds 5 to 15 kt. Seas 3 to 4 ft. .MON NIGHT...W winds 5 to 15 kt. Seas 3 to 5 ft. .TUE...SW winds 10 to 20 kt. Seas 3 to 6 ft. .TUE NIGHT...W winds 10 to 20 kt. Seas 5 to 8 ft. Cape Cod to Nantucket Shoals and Georges Bank ...TROPICAL STORM WARNING... .TODAY...N winds 45 to 60 kt. Seas 26 to 41 ft. Showers and tstms. .TONIGHT...N winds 20 to 30 kt. Seas 16 to 27 ft. Chance of showers. .SAT...E to NE winds 10 to 20 kt. Seas 8 to 14 ft. .SAT NIGHT...S to SE winds 5 to 15 kt. Seas 6 to 10 ft. .SUN...S to SE winds 5 to 15 kt. Seas 5 to 8 ft. .SUN NIGHT...S to SE winds 10 to 20 kt. Seas 5 to 7 ft. .MON...S winds 15 to 25 kt. Seas 5 to 7 ft. .MON NIGHT...W winds 10 to 20 kt. Seas 4 to 7 ft. .TUE...W winds 10 to 20 kt. Seas 4 to 6 ft. .TUE NIGHT...W winds 10 to 20 kt. Seas 4 to 7 ft. South of New England ...TROPICAL STORM WARNING... .TODAY...N winds 20 to 30 kt. Seas 15 to 30 ft. Chance of showers and scattered tstms. .TONIGHT...W to SW winds 10 to 20 kt. Seas 11 to 17 ft. .SAT...S to SW winds 5 to 15 kt. Seas 8 to 12 ft. .SAT NIGHT...S winds 5 to 15 kt. Seas 6 to 10 ft. .SUN...S winds 10 to 20 kt. Seas 5 to 7 ft. .SUN NIGHT...S winds 5 to 15 kt. Seas 4 to 7 ft. .MON...S to SW winds 10 to 20 kt. Seas 3 to 6 ft. .MON NIGHT...W winds 10 to 20 kt. Seas 3 to 5 ft. .TUE...W winds 10 to 20 kt. Seas 4 to 7 ft. .TUE NIGHT...W to NW winds 10 to 20 kt. Seas 4 to 7 ft.