Offshore Forecast
Issued by NWS
Issued by NWS
510 FZNT33 KWBC 180230 OFFN31 Marine Weather HF Voice Broadcast NWS Ocean Prediction Center Washington DC 930 PM EST Mon Nov 17 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 series of surface troughs will continue to move NW to SE over the area tonight through Tue night around broad low pressure over Atlantic Canada. High pressure builds over the waters Wed and continues through Thu night. Low pressure will move just S and SE of the area Wed night through Thu night. High pressure shifts E Fri as a cold front approaches from the W. The front moves through the waters Fri night and early Sat. High pressure builds over the area once again for Sat and most of Sat night, with a surface trough developing over the waters Sat night. Gulf of Maine to the Hague Line .TONIGHT...W winds 25 to 30 kt. Seas 7 to 12 ft. .TUE...W winds 20 to 30 kt. Seas 6 to 11 ft. .TUE NIGHT...W to NW winds 15 to 25 kt. Seas 5 to 9 ft. .WED...W winds 5 to 15 kt. Seas 3 to 5 ft. .WED NIGHT...NW winds less than 10 kt, becoming variable. Seas 3 ft early, becoming 2 ft or less. .THU...Variable winds less than 10 kt. Seas 2 ft or less. .THU NIGHT...E to SE winds less than 10 kt, becoming variable. Seas 2 ft or less. .FRI...S to SW winds less than 10 kt, becoming SW. Seas 2 ft or less, becoming 3 ft. .FRI NIGHT...SW winds 15 to 25 kt. Seas 4 to 7 ft. .SAT...N to NW winds 15 to 25 kt. Seas 5 to 8 ft. .SAT NIGHT...W to NW winds 15 to 25 kt. Seas 4 to 8 ft. Georges Bank...from the Northeast Channel to the Great South Channel including waters east of Cape Cod...to the Hague Line .TONIGHT...W winds 25 to 30 kt. Seas 9 to 16 ft. Isolated showers. .TUE...W winds 20 to 30 kt. Seas 7 to 13 ft. .TUE NIGHT...W winds 15 to 25 kt. Seas 6 to 11 ft. .WED...W winds 5 to 15 kt. Seas 3 to 6 ft. .WED NIGHT...W to NW winds less than 10 kt, becoming N to NE. Seas 3 to 4 ft. .THU...NE winds 5 to 15 kt, increasing to 10 to 20 kt. Seas 3 to 4 ft. .THU NIGHT...E to NE winds 10 to 20 kt, becoming N to NE. Seas 3 to 4 ft. .FRI...N winds 5 to 15 kt, becoming W to SW. Seas 3 to 5 ft. .FRI NIGHT...W to SW winds 5 to 15 kt, becoming S to SW 10 to 20 kt. Seas 4 to 8 ft. .SAT...N to NW winds 20 to 30 kt. Seas 5 to 9 ft. .SAT NIGHT...W to NW winds 15 to 25 kt. Seas 5 to 9 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...NW winds 25 to 30 kt. Seas 8 to 14 ft. Isolated showers. .TUE...W to NW winds 15 to 25 kt. Seas 6 to 11 ft. .TUE NIGHT...W winds 10 to 20 kt, diminishing to 5 to 15 kt. Seas 4 to 8 ft. Rain likely. .WED...W winds 5 to 15 kt, becoming variable. Seas 3 to 5 ft. Rain likely. .WED NIGHT...NE winds 5 to 15 kt. Seas 3 to 4 ft. .THU...E to NE winds 5 to 15 kt, becoming NE 10 to 20 kt. Seas 3 to 4 ft. .THU NIGHT...NE winds 10 to 20 kt, becoming N 5 to 15 kt. Seas 3 to 4 ft. .FRI...N to NW winds less than 10 kt, becoming SW 10 to 20 kt. Seas 3 to 4 ft. .FRI NIGHT...S to SW winds 15 to 25 kt. Seas 4 to 7 ft. .SAT...N to NW winds 20 to 30 kt. Seas 4 to 8 ft. .SAT NIGHT...NW winds 10 to 20 kt, diminishing to 5 to 15 kt. Seas 4 to 8 ft. .Forecaster Connelly. Ocean Prediction Center.