


Offshore Forecast
Issued by NWS
Issued by NWS
101 FZNT33 KWBC 080828 OFFN31 Marine Weather HF Voice Broadcast NWS Ocean Prediction Center Washington DC 428 AM EDT Wed Oct 8 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...A cold front will move E across the waters today and tonight as low pressure moves NE along the front. Behind the front, high pressure builds E over the area, though a surface trough or secondary cold front should pass over the waters on the E side of the high late tonight and Thu. High pressure then persists through Fri night, moving SE Sat as a surface trough moves SE over the area. S of another high anchored over SE Canada, deepening low pressure offshore of the SE U.S. coast over the weekend will slowly move N, impacting at least the S waters Sat night through Sun night. Mariners should monitor later forecasts on this coastal system. Gulf of Maine to the Hague Line ...GALE WARNING... .TODAY...S to SW winds 15 to 25 kt, becoming N 20 to 30 kt. Seas 4 to 8 ft. Numerous showers developing. .TONIGHT...N winds 25 to 35 kt, diminishing to 20 to 30 kt. Seas 5 to 9 ft. Numerous showers ending. .THU...N winds 15 to 25 kt. Seas 5 to 9 ft. .THU NIGHT...N winds 15 to 25 kt. Seas 4 to 8 ft. .FRI...N to NW winds 5 to 15 kt, becoming W to SW. Seas 3 to 5 ft. .FRI NIGHT...SW winds 10 to 20 kt, becoming W. Seas 3 to 5 ft. .SAT...W winds 10 to 20 kt, becoming W to SW 5 to 15 kt. Seas 3 to 5 ft. .SAT NIGHT...S to SW winds less than 10 kt, becoming E. Seas 3 to 4 ft. .SUN...E winds increasing to 15 to 25 kt. Seas 3 to 5 ft, building to 6 to 10 ft. .SUN NIGHT...E to NE winds 25 to 35 kt. Seas 8 to 14 ft. Georges Bank...from the Northeast Channel to the Great South Channel including waters east of Cape Cod...to the Hague Line ...GALE WARNING... .TODAY...S to SW winds 20 to 30 kt. Seas 4 to 7 ft. Scattered showers and tstms. .TONIGHT...SW winds 25 to 35 kt, becoming N 20 to 30 kt. Seas 6 to 11 ft. Numerous showers. .THU...N winds 20 to 25 kt. Seas 6 to 11 ft. .THU NIGHT...N winds 15 to 25 kt. Seas 5 to 9 ft. .FRI...N winds 10 to 20 kt, becoming variable less than 10 kt. Seas 4 to 7 ft. .FRI NIGHT...SW winds 5 to 15 kt. Seas 3 to 4 ft. .SAT...W to SW winds 5 to 15 kt, becoming E 10 to 20 kt. Seas 3 to 5 ft. .SAT NIGHT...E to NE winds 15 to 25 kt. Seas 4 to 8 ft. .SUN...E to NE winds increasing to 30 to 40 kt. Seas 11 to 19 ft. .SUN NIGHT...E winds 30 to 40 kt. Seas 11 to 19 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 ...GALE WARNING... .TODAY...S to SW winds 15 to 25 kt, increasing to 25 to 35 kt. Seas 5 to 9 ft. Numerous showers. Isolated tstms. .TONIGHT...N winds 25 to 35 kt, diminishing to 20 to 25 kt. Seas 5 to 9 ft. Numerous showers ending. .THU...N winds 15 to 25 kt. Seas 5 to 9 ft. .THU NIGHT...N to NE winds 15 to 25 kt, becoming NE 10 to 15 kt. Seas 5 to 9 ft. .FRI...E to NE winds 5 to 15 kt, becoming E to SE. Seas 3 to 6 ft. .FRI NIGHT...S to SE winds 5 to 10 kt. Seas 3 to 4 ft. .SAT...E winds increasing to 15 to 25 kt. Seas 5 to 8 ft. .SAT NIGHT...E winds 20 to 30 kt. Seas 7 to 12 ft. .SUN...NE winds increasing to 35 to 45 kt. Seas 14 to 23 ft. .SUN NIGHT...E to NE winds 35 to 45 kt. Seas 14 to 23 ft. .Forecaster Figurskey. Ocean Prediction Center.