Offshore Forecast
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487
FZNT33 KWBC 012025
OFFN31

Marine Weather HF Voice Broadcast
NWS Ocean Prediction Center Washington DC
325 PM EST Mon Dec 1 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...A cold front will dissipate
over the waters tonight. High pressure will build E across the
area tonight, then move E of the area 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 late Wed into Wed night. Yet another cold front will
move SE across the area Thu before exiting to the E and SE Thu
night. High pressure will build E over the waters Fri into Fri
night, then move E Sat as low pressure pass S of the region Sat
into Sat 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.

Gulf of Maine to the Hague Line

...GALE WARNING...

.TONIGHT...NW winds 20 to 30 kt, becoming N 10 to 20 kt early,
then, becoming SE 5 to 10 kt. Seas 5 to 9 ft.
.TUE...S winds 10 to 15 kt, becoming S to SE 10 to 20 kt. Seas
3 to 4 ft. Rain.
.TUE NIGHT...E to NE winds 20 to 30 kt, becoming N 35 to 45 kt.
Seas 4 to 7 ft, building to 9 to 15 ft. Rain.
.WED...N winds 25 to 35 kt, becoming N to NW 10 to 20 kt. Seas
10 to 16 ft.
.WED NIGHT...W to SW winds 10 to 15 kt, becoming SW 15 to 25 kt.
Seas 4 to 8 ft.
.THU...SW winds 20 to 30 kt, becoming W. Seas 6 to 11 ft.
.THU NIGHT...NW winds 30 to 40 kt. Seas 9 to 15 ft.
.FRI...NW winds 15 to 25 kt, becoming W 10 to 20 kt. Seas 7 to
12 ft.
.FRI NIGHT...W winds 10 to 20 kt, becoming SW 15 to 20 kt. Seas
3 to 5 ft.
.SAT...S to SW winds 15 to 20 kt. Seas 3 to 5 ft.
.SAT NIGHT...W winds 5 to 15 kt, becoming NW 15 to 20 kt. Seas
3 to 5 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...NW winds 15 to 25 kt, becoming N early, then,
becoming E to SE 5 to 10 kt. Seas 5 to 9 ft.
.TUE...S winds 10 to 20 kt, becoming SE 15 to 25 kt. Seas 4 to
7 ft. Chance of rain.
.TUE NIGHT...S to SE winds 30 to 40 kt, becoming N to NW 35 to
45 kt. Seas 10 to 18 ft. Rain.
.WED...N winds 25 to 35 kt, becoming NW 15 to 25 kt. Seas 10 to
17 ft.
.WED NIGHT...W to NW winds 10 to 15 kt, becoming SW 10 to 20 kt.
Seas 6 to 11 ft.
.THU...SW winds 15 to 25 kt, becoming W 20 to 30 kt. Seas 6 to
10 ft.
.THU NIGHT...W to NW winds 30 to 40 kt. Seas 10 to 17 ft.
.FRI...W to NW winds 15 to 25 kt. Seas 9 to 15 ft, subsiding to
6 to 10 ft.
.FRI NIGHT...W to SW winds 10 to 15 kt, becoming S to SW. Seas
4 to 7 ft.
.SAT...S to SE winds 15 to 20 kt, becoming E to SE 10 to 20 kt.
Seas 3 to 5 ft.
.SAT NIGHT...NW winds 15 to 20 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 WARNING...

.TONIGHT...N winds 10 to 20 kt, becoming N to NE 5 to 15 kt
early, then, becoming SE. Seas 4 to 7 ft.
.TUE...S to SE winds 10 to 20 kt, becoming SE 20 to 30 kt. Seas
3 to 4 ft, building to 5 to 8 ft. Rain.
.TUE NIGHT...N to NW winds 30 to 40 kt. Seas 9 to 16 ft. Rain.
.WED...N winds 20 to 30 kt, becoming NW 5 to 15 kt. Seas 8 to
14 ft.
.WED NIGHT...W to SW winds 5 to 15 kt, becoming W 15 to 20 kt.
Seas 5 to 9 ft.
.THU...W winds 20 to 30 kt. Seas 7 to 11 ft.
.THU NIGHT...N to NW winds 25 to 35 kt. Seas 8 to 13 ft.
.FRI...N winds 10 to 20 kt, becoming W to NW 5 to 10 kt. Seas
6 to 11 ft.
.FRI NIGHT...S to SW winds 10 to 15 kt, becoming S to SE 5 to
15 kt. Seas 3 to 5 ft.
.SAT...E winds 5 to 15 kt, becoming N to NW 10 to 20 kt. Seas
3 to 5 ft.
.SAT NIGHT...NW winds 15 to 20 kt. Seas 4 to 7 ft.

.Forecaster Holley. Ocean Prediction Center.