Offshore Forecast
Issued by NWS
Issued by NWS
315 FZNT21 KWBC 301438 OFFNT1 Offshore Waters Forecast NWS Ocean Prediction Center Washington DC 938 AM EST Sun Nov 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. 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. ANZ898-010230- 938 AM EST Sun Nov 30 2025 .SYNOPSIS FOR NEW ENGLAND WATERS...A warm front will develop and move N over the area this afternoon, and reach the Gulf of Maine Sun tonight. A cold front will sweep E across the waters tonight, and move well E of the area Mon. High pressure will build E across the area late Mon, persist Mon night, and then move quickly off to the E early Tue. Intensifying low pressure will approach the waters from the SW early Tue and move into the area late Tue into Tue night. The low will rapidly exit NE of the region Wed before high pressure quickly moves across the waters Wed night. Yet another cold front will move across the area Thu before exiting to the E and SE late Thu night. Mariners should monitor the latest forecasts for the intensifying low pressure system set to impact the region Tue into Wed, and begin to strongly consider avoidance routing at this time. $$ ANZ800-010230- Gulf of Maine to the Hague Line- 938 AM EST Sun Nov 30 2025 ...GALE WARNING... .TODAY...S winds 10 to 20 kt, increasing to 20 to 30 kt. Seas 4 to 7 ft. .TONIGHT...S winds 25 to 35 kt, becoming W to SW 20 to 30 kt. Seas building to 7 to 12 ft. Rain, then chance of showers. .MON...W winds 25 to 30 kt, becoming NW 20 to 30 kt. Seas 5 to 9 ft. .MON NIGHT...N to NW winds 15 to 25 kt, becoming NE 5 to 10 kt. Seas 4 to 8 ft. .TUE...S to SE winds 10 to 15 kt. Seas subsiding to 3 to 4 ft. .TUE NIGHT...N to NE winds 20 to 30 kt, becoming N 25 to 35 kt. Seas 3 to 5 ft, building to 7 to 11 ft. .WED...N winds 20 to 30 kt, becoming N to NW 10 to 20 kt. Seas 7 to 13 ft. .WED NIGHT...W to SW winds 15 to 25 kt. Seas 6 to 10 ft. .THU...W to SW winds 20 to 30 kt. Seas 6 to 10 ft. .THU NIGHT...NW winds 30 to 40 kt. Seas building to 10 to 17 ft. $$ ANZ805-010230- Georges Bank between Cape Cod and 68W north of 1000 FM- 938 AM EST Sun Nov 30 2025 ...GALE FORCE WINDS POSSIBLE TUE NIGHT... .TODAY...S winds 15 to 25 kt. Seas 3 to 5 ft. .TONIGHT...S winds 20 to 30 kt, becoming W to SW. Seas 4 to 8 ft. Rain likely early, then scattered showers. .MON...W to NW winds 20 to 30 kt. Seas 5 to 9 ft. .MON NIGHT...N winds 10 to 20 kt, becoming E to SE 5 to 10 kt. Seas 5 to 8 ft. .TUE...S winds 10 to 20 kt, becoming SE 15 to 25 kt. Seas 3 to 5 ft. .TUE NIGHT...N winds 20 to 30 kt, increasing to 25 to 35 kt. Seas 6 to 10 ft, building to 8 to 16 ft. .WED...N winds 20 to 30 kt, becoming NW 10 to 20 kt. Seas 9 to 16 ft. .WED NIGHT...W winds 10 to 15 kt, increasing to 15 to 20 kt. Seas 6 to 10 ft. .THU...W to SW winds 20 to 30 kt. Seas 6 to 10 ft. .THU NIGHT...W to NW winds 25 to 30 kt, becoming NW 25 to 35 kt. Seas building to 8 to 16 ft. $$ ANZ900-010230- Georges Bank between 68W and the Hague Line- 938 AM EST Sun Nov 30 2025 ...GALE FORCE WINDS POSSIBLE TUE NIGHT... .TODAY...S winds 10 to 15 kt, increasing to 15 to 25 kt. Seas 3 to 5 ft. .TONIGHT...S to SW winds 15 to 25 kt. Seas 4 to 7 ft. Chance of rain. .MON...W winds 20 to 30 kt, becoming NW. Seas 6 to 9 ft. Chance of rain. .MON NIGHT...N winds 10 to 20 kt, becoming E to NE 5 to 10 kt. Seas 5 to 9 ft. .TUE...S winds 10 to 15 kt, becoming S to SE 15 to 25 kt. Seas 3 to 6 ft. .TUE NIGHT...S to SE winds 20 to 30 kt, becoming N to NW 25 to 35 kt. Seas 4 to 8 ft, building to 8 to 15 ft. .WED...N to NW winds 20 to 30 kt. Seas 10 to 17 ft. .WED NIGHT...W winds 10 to 15 kt, increasing to 15 to 20 kt. Seas 7 to 12 ft. .THU...W to SW winds 20 to 30 kt. Seas 7 to 10 ft. .THU NIGHT...W to NW winds 25 to 30 kt, becoming NW 30 to 35 kt. Seas building to 10 to 17 ft. $$ ANZ810-010230- South of New England between the Great South Channel and Montauk Point to 1000 FM- 938 AM EST Sun Nov 30 2025 ...GALE FORCE WINDS POSSIBLE THU NIGHT... .TODAY...S winds 15 to 25 kt. Seas 4 to 7 ft. .TONIGHT...S winds 20 to 30 kt, becoming W. Seas 4 to 8 ft. Rain likely early, then chance of showers. .MON...N to NW winds 15 to 25 kt. Seas 4 to 8 ft. .MON NIGHT...N to NE winds 5 to 15 kt, becoming S to SE. Seas 4 to 7 ft. .TUE...S to SE winds 10 to 20 kt, becoming E to SE 20 to 30 kt. Seas 3 to 6 ft. .TUE NIGHT...N to NW winds 20 to 30 kt. Seas building to 8 to 16 ft. .WED...N winds 15 to 25 kt, becoming NW 5 to 15 kt. Seas 8 to 15 ft. .WED NIGHT...W winds 10 to 15 kt, increasing to 15 to 20 kt. Seas 6 to 10 ft. .THU...W to SW winds 20 to 30 kt. Seas 6 to 10 ft. .THU NIGHT...W to NW winds 30 to 40 kt. Seas building to 8 to 15 ft. $$ ANZ815-010230- South of Long Island between Montauk Point and Sandy Hook to 1000 FM- 938 AM EST Sun Nov 30 2025 ...GALE FORCE WINDS POSSIBLE THU... .TODAY...S winds 15 to 25 kt. Seas 4 to 7 ft. Chance of rain. .TONIGHT...S to SW winds 20 to 30 kt, becoming W. Seas 4 to 8 ft. Rain. Chance of showers. .MON...N to NW winds 15 to 25 kt. Seas 4 to 8 ft. .MON NIGHT...N winds 5 to 10 kt, becoming S to SE 5 to 15 kt. Seas 3 to 5 ft. .TUE...S to SE winds 10 to 20 kt, becoming N to NE 15 to 25 kt. Seas 3 to 5 ft. .TUE NIGHT...N winds 20 to 30 kt, becoming NW. Seas building to 8 to 14 ft. .WED...N winds 15 to 20 kt, becoming NW 10 to 15 kt. Seas 7 to 13 ft. .WED NIGHT...W winds 10 to 15 kt, increasing to 15 to 20 kt. Seas 4 to 8 ft. .THU...W winds 15 to 25 kt, increasing to 25 to 35 kt. Seas 6 to 10 ft. .THU NIGHT...NW winds 25 to 35 kt, becoming N to NW 20 to 30 kt. Seas 7 to 13 ft. $$ .Forecaster Mills. Ocean Prediction Center.