Offshore Forecast
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990
FZNT33 KWBC 222036
OFFN31

Marine Weather HF Voice Broadcast
NWS Ocean Prediction Center Washington DC
436 PM EDT Fri Aug 22 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...Post-tropical cyclone Erin
will continue moving E into the North Atlantic tonight. High
pressure will build offshore tonight into Sat, then shift E of
the waters Sat night into Sun. Low pressure will develop S of the
area Sun, then track NE across the outer portions Sun night into
Mon. A cold front will slowly approach the coast Sun and Sun
night, then move E across the area Mon and Mon night. A series of
weak low pressure troughs will move across the waters Tue through
Wed night.

Gulf of Maine to the Hague Line

.TONIGHT...N to NE winds 5 to 15 kt, becoming S to SW. Seas 8 to
14 ft.
.SAT...S winds 5 to 15 kt, increasing to 10 to 20 kt. Seas 5 to
9 ft.
.SAT NIGHT...S winds 15 to 25 kt. Seas 4 to 7 ft.
.SUN...S winds 10 to 20 kt. Seas 4 to 6 ft.
.SUN NIGHT...S winds 10 to 20 kt, becoming 10 to 15 kt. Seas
3 to 5 ft.
.MON...S winds 5 to 15 kt. Seas 3 to 4 ft.
.MON NIGHT...S winds 5 to 15 kt, becoming W. Seas 3 to 4 ft.
.TUE...W to SW winds 5 to 15 kt. Seas 3 to 5 ft.
.TUE NIGHT...W to SW winds 10 to 15 kt. Seas 3 to 5 ft.
.WED...W to SW winds 10 to 15 kt. Seas 3 to 6 ft.
.WED NIGHT...SW winds 10 to 15 kt, becoming W 5 to 10 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

.TONIGHT...N winds 20 to 30 kt, diminishing to 5 to 10 kt. Seas
12 to 19 ft. Chance of showers.
.SAT...S to SE winds 5 to 15 kt, increasing to 10 to 20 kt. Seas
6 to 11 ft.
.SAT NIGHT...S winds 10 to 20 kt, diminishing to 5 to 15 kt.
Seas 5 to 9 ft.
.SUN...S winds 5 to 15 kt. Seas 4 to 7 ft.
.SUN NIGHT...S to SE winds 5 to 15 kt. Seas 3 to 6 ft.
.MON...S to SE winds 5 to 15 kt. Seas 3 to 5 ft.
.MON NIGHT...Variable winds less than 10 kt, becoming W. Seas
3 to 5 ft.
.TUE...W winds 5 to 15 kt. Seas 3 to 5 ft.
.TUE NIGHT...W to SW winds 10 to 20 kt, becoming W 10 to 15 kt.
Seas 3 to 5 ft.
.WED...W winds 5 to 10 kt. Seas 3 to 5 ft.
.WED NIGHT...W to SW winds 10 to 15 kt, becoming W 5 to 10 kt.
Seas 3 to 4 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

.TONIGHT...N winds 10 to 20 kt, becoming variable 5 to 15 kt,
then, becoming W to SW. Seas 9 to 15 ft. Chance of showers.
.SAT...W to SW winds less than 10 kt, becoming S. Seas 6 to
10 ft.
.SAT NIGHT...S winds 10 to 15 kt. Seas 4 to 8 ft.
.SUN...S winds 5 to 15 kt. Seas 4 to 7 ft.
.SUN NIGHT...S winds 10 to 15 kt, diminishing to 5 to 10 kt.
Seas 3 to 6 ft.
.MON...S to SE winds less than 10 kt, becoming variable. Seas
3 to 5 ft.
.MON NIGHT...W winds 5 to 15 kt. Seas 3 to 4 ft.
.TUE...W to NW winds 10 to 15 kt, becoming W 10 to 20 kt. Seas
3 to 5 ft.
.TUE NIGHT...W to NW winds 10 to 15 kt. Seas 3 to 5 ft.
.WED...W to NW winds 5 to 10 kt, becoming W 10 to 15 kt. Seas
3 to 5 ft.
.WED NIGHT...W winds 10 to 15 kt, becoming W to NW 5 to 10 kt.
Seas 3 to 4 ft.

.Forecaster Collins. Ocean Prediction Center.