


Offshore Forecast
Issued by NWS
Issued by NWS
111 FZNT33 KWBC 031550 OFFN31 Marine Weather HF Voice Broadcast NWS Ocean Prediction Center Washington DC 1150 AM EDT Wed Sep 3 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...Weak high pressure will remain over the area through Thu as weak lows move NE along a surface front nearly stationary just SE of the waters. High pressure gradually shifts E Thu night and Fri ahead of a cold front. This slow-moving front approaches the coast Fri, and weakens as it moves E across the waters Fri and Fri night. Another cold front approaches from the W Sat, moves into the area Sat night, and finally passes through the area by late Sun night. High pressure builds in from the W behind the front. Gulf of Maine to the Hague Line .TODAY...S winds less than 10 kt. Seas 3 to 4 ft. Areas of fog far NE portion with vsby 1 nm or less. .TONIGHT...S winds 5 to 15 kt, becoming S to SW. Seas 3 to 4 ft. Areas of fog far NE portion with vsby 1 nm or less. .THU...S winds less than 10 kt, increasing to 5 to 15 kt. Seas 3 to 4 ft. .THU NIGHT...S winds 10 to 20 kt. Seas 3 to 4 ft. Isolated showers. .FRI...S winds 15 to 25 kt. Seas 3 to 5 ft. .FRI NIGHT...S to SW winds 15 to 25 kt. Seas 4 to 6 ft. .SAT...S to SW winds 15 to 20 kt, becoming S 20 to 30 kt. Seas 4 to 7 ft. .SAT NIGHT...S winds 15 to 25 kt, becoming SW 10 to 20 kt. Seas 4 to 7 ft. .SUN...N winds 10 to 20 kt, becoming W to SW 5 to 15 kt. Seas 3 to 4 ft. .SUN NIGHT...Variable winds less than 10 kt, becoming N 10 to 20 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 .TODAY...E to NE winds 5 to 10 kt, becoming NE 5 to 15 kt. Seas 3 to 4 ft. Isolated showers. .TONIGHT...N to NE winds 5 to 15 kt. Seas 3 to 4 ft. .THU...NE winds less than 10 kt, becoming S to SE. Seas 3 to 4 ft. .THU NIGHT...S winds 5 to 15 kt, increasing to 10 to 20 kt. Seas 3 to 4 ft. Isolated showers. .FRI...S winds 10 to 20 kt. Seas 3 to 5 ft. .FRI NIGHT...S winds 10 to 20 kt. Seas 3 to 5 ft. .SAT...S winds 10 to 20 kt. Seas 3 to 5 ft. .SAT NIGHT...S winds 10 to 20 kt, becoming SW 15 to 25 kt. Seas 3 to 5 ft. .SUN...SW winds 10 to 20 kt. Seas 3 to 6 ft. .SUN NIGHT...SW winds 5 to 15 kt, becoming N to NE 10 to 20 kt. Seas 3 to 5 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 .TODAY...E to NE winds 5 to 15 kt. Seas 3 to 5 ft. .TONIGHT...E to NE winds less than 10 kt, becoming variable. Seas 3 to 4 ft. .THU...S to SE winds less than 10 kt, becoming S 10 to 20 kt. Seas 3 to 4 ft. .THU NIGHT...S winds 10 to 20 kt. Seas 3 to 5 ft. Scattered tstms and isolated showers. .FRI...S winds 10 to 20 kt. Seas 3 to 5 ft. .FRI NIGHT...S winds 10 to 20 kt. Seas 3 to 5 ft. .SAT...S winds 10 to 20 kt. Seas 3 to 5 ft. .SAT NIGHT...S winds 10 to 20 kt, becoming SW. Seas 3 to 5 ft. .SUN...N winds 10 to 20 kt, becoming W to SW 5 to 15 kt. Seas 3 to 5 ft. .SUN NIGHT...N winds 5 to 15 kt, increasing to 10 to 20 kt. Seas 3 to 5 ft. .Forecaster Joseph. Ocean Prediction Center.