Offshore Forecast
Issued by NWS
Issued by NWS
605 FZNT33 KWBC 072029 OFFN31 Marine Weather HF Voice Broadcast NWS Ocean Prediction Center Washington DC 329 PM EST Sun Dec 7 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. This product will be discontinued January 6.For more details see: https://www.weather.gov/media/notification/pdf_2025/ scn_25-83_Updated_VOBRA_Discontinuation_aaa.pdf .SYNOPSIS FOR NEW ENGLAND WATERS...A cold front moving S through the Gulf of Maine will lift back N as a warm front this evening as an area of low pressure moved E towards the Maine coast. A stronger cold front extending SW from the low will move quickly SE across the waters tonight. High pressure will build E across the waters late Mon into Tue. The high will shift E Tue night as weak low pressure develops and moves NE along the Maine coast, pushing a warm front NE across the area. Another warm front will lift N across the waters Wed ahead of a stronger area of low pressure moving E into northern New England. A strong cold front associated with that system will sweep SE across the area Wed night into Thu. High pressure will quickly move across the area Thu night, followed by another cold front moving over the region Fri and Fri night. Gulf of Maine to the Hague Line ...GALE WARNING... .TONIGHT...Variable winds less than 10 kt, becoming SW 10 to 20 kt early, then, becoming W to NW 20 to 30 kt. Seas 4 to 7 ft. .MON...NW winds 25 to 35 kt. Seas 7 to 12 ft. Light freezing spray. .MON NIGHT...NW winds 15 to 25 kt. Seas 6 to 10 ft. Light freezing spray. .TUE...W to NW winds 5 to 15 kt, becoming SW 10 to 20 kt. Seas 3 to 5 ft. Light freezing spray. .TUE NIGHT...SW winds 20 to 30 kt. Seas 5 to 9 ft. .WED...SW winds 20 to 25 kt, becoming S 20 to 30 kt. Seas 5 to 9 ft. .WED NIGHT...W to SW winds 20 to 30 kt. Seas 7 to 12 ft. .THU...W winds 20 to 30 kt. Seas 6 to 11 ft. .THU NIGHT...W winds 15 to 25 kt. Seas 5 to 9 ft. .FRI...W winds 5 to 15 kt. Seas 4 to 8 ft. .FRI NIGHT...W winds 5 to 15 kt, increasing to 10 to 20 kt. Seas 4 to 7 ft. Georges Bank...from the Northeast Channel to the Great South Channel including waters east of Cape Cod...to the Hague Line ...GALE WARNING... .TONIGHT...W winds less than 5 kt, increasing to 20 to 30 kt. Seas 4 to 7 ft. .MON...N to NW winds 25 to 35 kt. Seas 7 to 13 ft. .MON NIGHT...N winds 15 to 25 kt. Seas 7 to 12 ft. .TUE...N winds 5 to 15 kt, becoming SW 10 to 20 kt. Seas 4 to 7 ft. .TUE NIGHT...SW winds 20 to 30 kt. Seas 5 to 8 ft. .WED...S to SW winds 20 to 30 kt. Seas 6 to 10 ft. .WED NIGHT...W to SW winds 20 to 30 kt. Seas 7 to 13 ft. .THU...W winds 20 to 30 kt. Seas 7 to 13 ft. .THU NIGHT...W winds 15 to 25 kt. Seas 6 to 11 ft. .FRI...W winds 10 to 15 kt. Seas 6 to 10 ft. .FRI NIGHT...W winds 5 to 15 kt. Seas 4 to 7 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 WED... .TONIGHT...W winds 5 to 15 kt, becoming W to NW 15 to 25 kt. Seas 4 to 7 ft. .MON...N winds 20 to 30 kt. Seas 6 to 11 ft. .MON NIGHT...N winds 15 to 25 kt. Seas 6 to 10 ft. .TUE...N to NE winds 5 to 15 kt, becoming S to SW 10 to 20 kt. Seas 3 to 6 ft. .TUE NIGHT...SW winds 20 to 30 kt. Seas 5 to 9 ft. .WED...SW winds 20 to 30 kt, increasing to 25 to 35 kt. Seas 8 to 13 ft. .WED NIGHT...SW winds 20 to 30 kt, becoming W. Seas 8 to 14 ft. .THU...W winds 20 to 30 kt. Seas 7 to 13 ft. .THU NIGHT...W to NW winds 15 to 20 kt, becoming NW 5 to 15 kt. Seas 6 to 10 ft. .FRI...W to NW winds 5 to 10 kt, becoming W 10 to 15 kt. Seas 4 to 8 ft. .FRI NIGHT...W to NW winds 10 to 20 kt. Seas 4 to 7 ft. .Forecaster Holley. Ocean Prediction Center.