


Offshore Forecast
Issued by NWS
Issued by NWS
906 FZNT23 KWNM 180927 OFFN01 NAVTEX Marine Forecast for NE US waters NWS Ocean Prediction Center Washington DC 527 AM EDT Mon Aug 18 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...A cold front across the S waters this morning will pass S of the area today and tonight as high pressure builds S across the region. The high will remain over the area Tue, then shift E of the area Tue night through Wed night. Hurricane Erin will remain S and E of the waters. Tropical storm conditions will be possible in the far SE waters Thu night as it lifts NE through the Outer Mid- Atlantic Waters. Long period S swell from Hurricane Erin will move into the region Tue, then continue through Thu night before backing to the SE and E Thu night through Fri night. A high pressure ridge will build across the waters late Fri and Fri night. For more information on Hurricane Erin, please closely monitor the latest forecasts from the National Hurricane Center. Eastport Maine to Cape Cod .TODAY...N winds 15 to 25 kt. Seas 5 to 7 ft. .TONIGHT...NE winds 5 to 15 kt. Seas 3 to 6 ft. .TUE...E winds less than 10 kt. Seas 3 to 5 ft. .TUE NIGHT...S to SE winds less than 10 kt. Seas 3 to 6 ft. .WED...SE winds 5 to 15 kt. Seas 4 to 7 ft. .WED NIGHT...E winds 5 to 15 kt. Seas 5 to 9 ft. .THU...E to NE winds 10 to 20 kt. Seas 8 to 14 ft. .THU NIGHT...NE winds 20 to 30 kt. Seas 12 to 19 ft. .FRI...N winds 20 to 30 kt. Seas 11 to 18 ft. .FRI NIGHT...SW winds 10 to 20 kt. Seas 8 to 12 ft. Cape Cod to Nantucket Shoals and Georges Bank ...TROPICAL STORM CONDITIONS POSSIBLE THU... .TODAY...NE winds 15 to 25 kt. Seas 4 to 7 ft. Isolated showers and tstms. .TONIGHT...NE winds 10 to 20 kt. Seas 5 to 8 ft. .TUE...E winds 5 to 15 kt. Seas 6 to 9 ft. .TUE NIGHT...E winds 5 to 15 kt. Seas 6 to 10 ft. .WED...E winds 10 to 20 kt. Seas 8 to 13 ft. .WED NIGHT...E winds 15 to 25 kt. Seas 12 to 21 ft. .THU...Tropical storm conditions possible. .THU NIGHT...Tropical storm conditions possible. .FRI...Tropical storm conditions possible. .FRI NIGHT...N to NE winds 20 to 30 kt. Seas 11 to 18 ft. South of New England ...TROPICAL STORM CONDITIONS POSSIBLE THU... .TODAY...NE winds 20 to 30 kt. Seas 5 to 8 ft. Isolated showers and tstms. .TONIGHT...E winds 15 to 25 kt. Seas 6 to 9 ft. .TUE...E winds 10 to 20 kt. Seas 6 to 9 ft. .TUE NIGHT...E winds 5 to 15 kt. Seas 7 to 10 ft. .WED...E winds 10 to 20 kt. Seas 8 to 13 ft. .WED NIGHT...E winds 20 to 30 kt. Seas 12 to 21 ft. .THU...Tropical storm conditions possible. .THU NIGHT...Tropical storm conditions possible. .FRI...N to NE winds 20 to 30 kt. Seas 12 to 20 ft. .FRI NIGHT...S to SW winds 10 to 20 kt. Seas 9 to 14 ft.