Offshore Forecast
Issued by NWS
Issued by NWS
647 FZNT33 KWBC 130832 OFFN31 Marine Weather HF Voice Broadcast NWS Ocean Prediction Center Washington DC 332 AM EST Thu Nov 13 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...Low pressure near the Gulf of Maine will move E and NE through Thu night. A series of surface troughs will then move S over the area behind the low, with high pressure gradually building E Fri through Sat. The high shifts E Sat and Sat night as a warm front approaches and enters the waters from the SW. The warm front will move across the waters Sat night, with a low moving into the area from the NW Sun. The low deepens as it moves E Sun and Sun night. A strong cold front moves SE over the waters Sun, then a persistent W to NW flow occurs behind the front Sun night through Mon night as high pressure builds to the S. Gulf of Maine to the Hague Line ...GALE FORCE WINDS POSSIBLE SUN NIGHT... .TODAY...W to NW winds 10 to 20 kt. Seas 4 to 8 ft. Isolated showers. .TONIGHT...N to NW winds 15 to 25 kt. Seas 4 to 7 ft. Scattered showers. .FRI...N winds 15 to 25 kt, becoming NW. Seas 4 to 8 ft. Isolated showers. .FRI NIGHT...N to NW winds 15 to 25 kt. Seas 4 to 7 ft. Scattered showers. .SAT...NW winds 15 to 20 kt, becoming W 10 to 20 kt. Seas 3 to 6 ft. .SAT NIGHT...W to SW winds 15 to 20 kt, becoming S to SW 15 to 25 kt. Seas 3 to 6 ft. .SUN...SW winds 20 to 25 kt, becoming W 20 to 30 kt. Seas 5 to 9 ft. .SUN NIGHT...W to NW winds 25 to 35 kt. Seas 7 to 13 ft. .MON...W winds 25 to 35 kt. Seas 9 to 15 ft. .MON NIGHT...W winds 25 to 35 kt, becoming 25 to 30 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 FORCE WINDS POSSIBLE SUN NIGHT... .TODAY...W winds 15 to 25 kt. Seas 6 to 11 ft. Scattered showers. Scattered tstms. .TONIGHT...NW winds 20 to 30 kt. Seas 6 to 11 ft. Scattered showers and tstms. .FRI...NW winds 20 to 30 kt. Seas 6 to 11 ft. Scattered showers. .FRI NIGHT...NW winds 15 to 25 kt. Seas 5 to 9 ft. Scattered showers. .SAT...W to NW winds 15 to 20 kt. Seas 4 to 8 ft. .SAT NIGHT...W to SW winds 15 to 20 kt, becoming S to SW 15 to 25 kt. Seas 3 to 6 ft. .SUN...W to SW winds 20 to 30 kt. Seas 6 to 11 ft. .SUN NIGHT...W winds 25 to 35 kt. Seas 9 to 15 ft. .MON...W winds 25 to 35 kt. Seas 10 to 17 ft. .MON NIGHT...W winds 30 to 35 kt, diminishing to 25 to 30 kt. Seas 9 to 16 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 FORCE WINDS POSSIBLE SUN... .TODAY...W to NW winds 20 to 30 kt. Seas 6 to 11 ft. Scattered showers. Scattered tstms. .TONIGHT...NW winds 20 to 30 kt. Seas 7 to 11 ft. Scattered showers. .FRI...NW winds 20 to 30 kt. Seas 6 to 10 ft. Scattered showers. .FRI NIGHT...NW winds 15 to 25 kt. Seas 5 to 8 ft. Scattered showers. .SAT...NW winds 10 to 20 kt, becoming W 5 to 15 kt. Seas 4 to 8 ft. .SAT NIGHT...SW winds 15 to 25 kt. Seas 3 to 6 ft. .SUN...W to SW winds 20 to 30 kt, becoming W to NW 25 to 35 kt. Seas 6 to 11 ft. .SUN NIGHT...NW winds 30 to 40 kt, becoming W. Seas 9 to 15 ft. .MON...W winds 30 to 40 kt. Seas 9 to 15 ft. .MON NIGHT...W to NW winds 20 to 30 kt. Seas 8 to 14 ft. .Forecaster Joseph. Ocean Prediction Center.