


Offshore Forecast
Issued by NWS
Issued by NWS
519 FZNT33 KWBC 181432 OFFN31 Marine Weather HF Voice Broadcast NWS Ocean Prediction Center Washington DC 1032 AM EDT Sat Oct 18 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...Strong low pressure to the SE of the area will slowly move well E of the region today and tonight as high pressure gradually builds E over the area. The high will move E over the waters Sun, then shift E of the region Sun night as a cold front moves E over the W waters. The front will continue moving E across the area Mon and Mon night as low pressure tracks NE along the coast while pulling a low pressure trough over the area into Tue. Another cold front will move over the waters Tue night into Wed night as low pressure tracks NE along the coast. Gulf of Maine to the Hague Line .TODAY...N winds 15 to 25 kt. Seas 6 to 10 ft. .TONIGHT...N to NW winds 5 to 15 kt, becoming W to NW 5 to 10 kt. Seas 5 to 9 ft. .SUN...S winds less than 10 kt, increasing to 5 to 15 kt. Seas 4 to 7 ft. .SUN NIGHT...S to SE winds 10 to 20 kt. Seas 3 to 6 ft. Scattered showers. .MON...SE winds 20 to 30 kt. Seas 5 to 9 ft. .MON NIGHT...S to SE winds 15 to 25 kt, becoming S to SW 10 to 20 kt. Seas 5 to 9 ft. .TUE...SW winds 10 to 20 kt. Seas 4 to 8 ft. .TUE NIGHT...SW winds 10 to 15 kt, becoming S. Seas 4 to 7 ft. .WED...S to SE winds 10 to 15 kt, becoming 10 to 20 kt. Seas 3 to 6 ft. .WED NIGHT...S winds 15 to 20 kt, becoming W to SW 15 to 25 kt. Seas 4 to 7 ft. Georges Bank...from the Northeast Channel to the Great South Channel including waters east of Cape Cod...to the Hague Line .TODAY...N winds 20 to 30 kt. Seas 8 to 14 ft. .TONIGHT...N winds 15 to 25 kt. Seas 7 to 12 ft. .SUN...N winds 5 to 15 kt, becoming variable. Seas 5 to 9 ft. .SUN NIGHT...S to SE winds 5 to 15 kt, becoming SE 10 to 20 kt. Seas 5 to 7 ft. Scattered showers. .MON...SE winds 20 to 30 kt. Seas 6 to 10 ft. .MON NIGHT...S to SE winds 15 to 25 kt, becoming W to SW. Seas 6 to 11 ft. .TUE...W to SW winds 10 to 20 kt. Seas 6 to 10 ft. .TUE NIGHT...SW winds 10 to 15 kt, becoming S 5 to 15 kt. Seas 4 to 8 ft. .WED...S winds 10 to 20 kt. Seas 4 to 7 ft. .WED NIGHT...SW winds 15 to 20 kt, becoming W. Seas 5 to 8 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 .TODAY...N winds 10 to 20 kt. Seas 6 to 11 ft. .TONIGHT...Variable winds 5 to 15 kt, becoming S. Seas 5 to 9 ft. .SUN...S winds 5 to 15 kt, increasing to 10 to 20 kt. Seas 4 to 7 ft. .SUN NIGHT...S to SE winds 20 to 30 kt. Seas 5 to 9 ft. Scattered showers. .MON...S to SE winds 20 to 30 kt, becoming W to SW. Seas 6 to 11 ft. .MON NIGHT...W winds 20 to 30 kt. Seas 6 to 11 ft. .TUE...W to SW winds 10 to 20 kt. Seas 5 to 9 ft. .TUE NIGHT...S to SW winds 10 to 20 kt. Seas 4 to 6 ft. .WED...S winds 15 to 20 kt, becoming W to SW. Seas 4 to 7 ft. .WED NIGHT...W winds 15 to 25 kt. Seas 4 to 8 ft. .Forecaster Joseph. Ocean Prediction Center.