


Offshore Forecast
Issued by NWS
Issued by NWS
197 FZNT33 KWBC 230237 OFFN31 Marine Weather HF Voice Broadcast NWS Ocean Prediction Center Washington DC 1037 PM EDT Fri Aug 22 2025 New England continental shelf and slope waters from 25 nm offshore to the Hague Line, except to 1000 fm south of New England. Conditions given represent the highest within that period. 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. Locally higher winds and seas can be expected in and near tstms. .SYNOPSIS FOR NEW ENGLAND WATERS...Post-tropical cyclone Erin will continue moving E into the North Atlantic tonight. High pressure will build offshore tonight into Sat, then shift E of the waters Sat night into Sun. Low pressure will develop S of the area Sun, then track NE across the outer portions Sun night into Mon. A cold front will slowly approach the coast Sun and Sun night, then move E across the area Mon and Mon night. A series of weak low pressure troughs will move across the waters Tue through Wed night. Gulf of Maine to the Hague Line .TONIGHT...Variable winds less than 10 kt, becoming W to SW. Seas 7 to 12 ft. .SAT...S winds 5 to 15 kt, increasing to 10 to 20 kt. Seas 5 to 9 ft. .SAT NIGHT...S winds 10 to 20 kt. Seas 4 to 7 ft. .SUN...S winds 10 to 20 kt. Seas 4 to 6 ft. .SUN NIGHT...S winds 10 to 20 kt, becoming 10 to 15 kt. Seas 3 to 5 ft. .MON...S winds 5 to 15 kt. Seas 3 to 4 ft. .MON NIGHT...S winds less than 10 kt, becoming W. Seas 3 to 5 ft. .TUE...W to SW winds 5 to 15 kt. Seas 3 to 5 ft. .TUE NIGHT...W to SW winds 10 to 15 kt. Seas 3 to 6 ft. .WED...W to SW winds 5 to 15 kt. Seas 3 to 5 ft. .WED NIGHT...SW winds 10 to 15 kt, becoming W 5 to 10 kt. Seas 3 to 5 ft. Georges Bank...from the Northeast Channel to the Great South Channel including waters east of Cape Cod...to the Hague Line .TONIGHT...N to NW winds 5 to 15 kt, becoming 5 to 10 kt. Seas 9 to 16 ft. .SAT...N winds less than 10 kt, becoming S to SE. Seas 7 to 12 ft. .SAT NIGHT...S winds 5 to 15 kt. Seas 5 to 9 ft. .SUN...S winds 5 to 15 kt. Seas 4 to 7 ft. .SUN NIGHT...S to SE winds 5 to 15 kt. Seas 3 to 5 ft. .MON...S to SE winds 5 to 15 kt. Seas 3 to 5 ft. .MON NIGHT...Variable winds less than 10 kt, becoming W. Seas 3 to 5 ft. .TUE...W winds 5 to 15 kt. Seas 3 to 5 ft. .TUE NIGHT...W to SW winds 10 to 20 kt, becoming W 10 to 15 kt. Seas 4 to 5 ft. .WED...W winds 5 to 10 kt. Seas 4 to 5 ft. .WED NIGHT...W to SW winds 10 to 15 kt, becoming W 5 to 10 kt. Seas 3 to 4 ft. South of New England...from the Great South Channel to Hudson Canyon including the waters south of Marthas Vineyard and Nantucket Island...out to 1000 fm .TONIGHT...Variable winds less than 10 kt, becoming W to SW. Seas 7 to 12 ft. .SAT...W to SW winds less than 10 kt, becoming S. Seas 6 to 10 ft. .SAT NIGHT...S winds 10 to 15 kt. Seas 4 to 8 ft. .SUN...S winds 5 to 15 kt. Seas 4 to 7 ft. .SUN NIGHT...S winds 5 to 15 kt. Seas 3 to 5 ft. .MON...S to SE winds 5 to 15 kt, becoming variable. Seas 3 to 5 ft. .MON NIGHT...W winds 5 to 15 kt. Seas 3 to 5 ft. .TUE...W to NW winds 10 to 15 kt. Seas 3 to 5 ft. .TUE NIGHT...W to NW winds 10 to 15 kt. Seas 3 to 5 ft. .WED...W to NW winds 5 to 15 kt. Seas 3 to 5 ft. .WED NIGHT...W winds 10 to 15 kt, becoming W to NW 5 to 10 kt. Seas 3 to 4 ft. .Forecaster Connelly. Ocean Prediction Center.