


Offshore Forecast
Issued by NWS
Issued by NWS
258 FZNT33 KWBC 302021 OFFN31 Marine Weather HF Voice Broadcast NWS Ocean Prediction Center Washington DC 421 PM EDT Sat Aug 30 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 surface trough will develop over the area tonight behind a front moving off to the E. High pressure then builds in for Sun, continuing through Mon. Low pressure will approach the SE waters Mon night and pass just E of the waters Tue. High pressure then returns behind the low and remains in place through Wed night. The high shifts E Thu ahead of low pressure and a warm front that should move into the waters overnight Thu. Gulf of Maine to the Hague Line .TONIGHT...W to SW winds 5 to 15 kt, becoming W to NW. Seas 3 to 4 ft. Isolated showers. .SUN...N to NW winds 5 to 15 kt, becoming W to NW. Seas 3 to 4 ft. .SUN NIGHT...Variable winds less than 10 kt, becoming N to NW. Seas 3 to 4 ft. .MON...N to NE winds 5 to 10 kt. Seas 3 to 4 ft. .MON NIGHT...E to SE winds less than 10 kt, becoming E to NE. Seas 3 to 4 ft. .TUE...E to NE winds 5 to 15 kt, becoming NE 10 to 20 kt. Seas 4 to 7 ft. .TUE NIGHT...N to NW winds 5 to 15 kt, becoming W to NW 5 to 10 kt. Seas 4 to 7 ft. .WED...W winds 5 to 10 kt, becoming SW 5 to 15 kt. Seas 3 to 5 ft. .WED NIGHT...SW winds 10 to 20 kt, becoming 10 to 15 kt. Seas 3 to 4 ft. .THU...SW winds 10 to 15 kt, becoming S to SW 10 to 20 kt. Seas 3 to 4 ft. .THU NIGHT...S winds 10 to 20 kt, becoming 10 to 15 kt. Seas 3 to 4 ft. Georges Bank...from the Northeast Channel to the Great South Channel including waters east of Cape Cod...to the Hague Line .TONIGHT...W to NW winds 5 to 15 kt, becoming W to SW. Seas 3 to 4 ft. Isolated showers. .SUN...Variable winds 5 to 15 kt, becoming N. Seas 3 to 4 ft. .SUN NIGHT...NE winds 5 to 15 kt. Seas 3 to 4 ft. Isolated showers. .MON...NE winds 10 to 15 kt, becoming 10 to 20 kt. Seas 3 to 5 ft. .MON NIGHT...E to NE winds 15 to 25 kt. Seas 5 to 9 ft. .TUE...NE winds 20 to 30 kt, becoming N. Seas 8 to 13 ft. .TUE NIGHT...N winds 15 to 25 kt, becoming N to NW 5 to 15 kt. Seas 6 to 11 ft. .WED...W to NW winds 5 to 10 kt, becoming W to SW 5 to 15 kt. Seas 4 to 5 ft. .WED NIGHT...W to SW winds 5 to 15 kt. Seas 3 to 4 ft. .THU...S to SW winds less than 10 kt, becoming S. Seas 3 to 4 ft. .THU NIGHT...S to SE winds 5 to 15 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...W winds less than 10 kt, increasing to 5 to 15 kt, then, becoming N to NW 10 to 20 kt. Seas 3 to 4 ft. .SUN...N to NE winds 5 to 15 kt. Seas 3 to 4 ft. .SUN NIGHT...NE winds 5 to 15 kt, increasing to 10 to 20 kt. Seas 3 to 4 ft. .MON...NE winds 10 to 20 kt. Seas 3 to 6 ft. .MON NIGHT...E to NE winds 10 to 20 kt. Seas 4 to 7 ft. .TUE...NE winds 10 to 20 kt, becoming N to NE 5 to 15 kt. Seas 4 to 8 ft. .TUE NIGHT...N to NW winds less than 10 kt. Seas 4 to 7 ft. .WED...Variable winds less than 10 kt, becoming SW. Seas 3 to 5 ft. .WED NIGHT...S to SW winds 5 to 15 kt. Seas 3 to 4 ft. .THU...S winds 5 to 15 kt, increasing to 10 to 20 kt. Seas 3 to 4 ft. .THU NIGHT...S winds 10 to 15 kt, becoming SE. Seas 3 to 4 ft. .Forecaster Figurskey. Ocean Prediction Center.