


Offshore Forecast
Issued by NWS
Issued by NWS
692 FZNT33 KWBC 232026 OFFN31 Marine Weather HF Voice Broadcast NWS Ocean Prediction Center Washington DC 426 PM EDT Sat Aug 23 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...High pressure will shift E of the waters tonight into Sun. Low pressure will develop S of the area tonight into Sun, then track NE across the waters Sun night and 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 Thu. Another cold front will approach the coast later Thu and Thu night. Gulf of Maine to the Hague Line .TONIGHT...S to SW winds 15 to 25 kt. Seas 4 to 8 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. Rain likely with vsby 1 nm or less. .MON...SE winds 20 to 30 kt, becoming E to NE 10 to 20 kt. Seas 4 to 7 ft. Chance of rain with vsby 1 nm or less. .MON NIGHT...S to SW winds less than 10 kt, becoming W to SW. Seas 4 to 7 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, becoming W to NW 5 to 15 kt. Seas 3 to 5 ft. .WED...W winds 5 to 10 kt, becoming W to SW 5 to 15 kt. Seas 3 to 5 ft. .WED NIGHT...SW winds 10 to 15 kt, becoming W to NW 5 to 15 kt. Seas 3 to 4 ft. .THU...W winds 5 to 10 kt, becoming SW 5 to 15 kt. Seas 3 to 4 ft. .THU NIGHT...S to SW winds 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...S winds 10 to 20 kt, diminishing to 5 to 15 kt. Seas 5 to 9 ft. .SUN...S to SE winds 10 to 15 kt. Seas 4 to 6 ft. .SUN NIGHT...S winds 10 to 15 kt, becoming S to SE 15 to 25 kt. Seas 4 to 7 ft. Rain likely. .MON...S to SE winds 20 to 30 kt, becoming S to SW 15 to 25 kt. Seas 5 to 9 ft. Rain with vsby 1 nm or less. .MON NIGHT...W to SW winds 5 to 15 kt. Seas 5 to 8 ft. .TUE...W winds 5 to 15 kt. Seas 4 to 5 ft. .TUE NIGHT...W winds 5 to 15 kt. Seas 4 to 5 ft. .WED...W winds less than 10 kt. Seas 3 to 5 ft. .WED NIGHT...W to SW winds 5 to 15 kt. Seas 3 to 4 ft. .THU...W winds 5 to 10 kt, becoming W to SW 5 to 15 kt. Seas 3 to 4 ft. .THU NIGHT...SW 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...S winds 5 to 10 kt, becoming 5 to 15 kt. Seas 4 to 8 ft. .SUN...S to SE winds 5 to 15 kt. Seas 4 to 6 ft. .SUN NIGHT...S winds 5 to 15 kt, becoming S to SE 15 to 25 kt. Seas 5 to 8 ft. Rain likely. .MON...S to SW winds 15 to 25 kt, becoming W to SW 5 to 15 kt. Seas 4 to 8 ft. Chance of rain. .MON NIGHT...SW winds 10 to 15 kt, becoming W to NW 5 to 15 kt. Seas 3 to 6 ft. .TUE...NW winds 5 to 15 kt, becoming W. Seas 3 to 5 ft. .TUE NIGHT...W to NW winds 5 to 15 kt. Seas 3 to 5 ft. .WED...N winds less than 10 kt, becoming W to SW. Seas 3 to 4 ft. .WED NIGHT...W winds 5 to 15 kt, becoming W to NW 5 to 10 kt. Seas 3 to 4 ft. .THU...W to NW winds less than 10 kt, becoming W to SW. Seas 3 to 4 ft. .THU NIGHT...SW winds 10 to 15 kt. Seas 3 to 4 ft. .Forecaster Collins. Ocean Prediction Center.