Offshore Forecast
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699
FZNT33 KWBC 092035
OFFN31

Marine Weather HF Voice Broadcast
NWS Ocean Prediction Center Washington DC
435 PM EDT Thu Oct 9 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...High pressure will continue to
build over the area tonight through Fri night. The high will
gradually shift NE Sat through Sun as a coastal low moves N just
offshore of the SE U.S. The low will strengthen and expand as it
moves N, being centered just offshore of the mid-Atlantic coast
by Sun night. The broad, complex low will extend over much of the
east coast Sun night and Mon, with the broad low finally starting
to shift E Mon night through Tue night. Mariners should monitor
later forecasts on the coastal system. This will be a long
duration event for the east coast, impactful to the mariner.

Gulf of Maine to the Hague Line

...GALE FORCE WINDS POSSIBLE SUN NIGHT...

.TONIGHT...N winds 15 to 25 kt. Seas 5 to 9 ft.
.FRI...N to NW winds less than 10 kt, becoming W to SW. Seas
3 to 5 ft.
.FRI NIGHT...W to SW winds 10 to 20 kt. Seas 3 to 5 ft.
.SAT...W winds 10 to 20 kt, becoming W to SW 5 to 15 kt. Seas
3 to 5 ft.
.SAT NIGHT...S to SW winds less than 10 kt, becoming E. Seas
3 to 4 ft.
.SUN...E winds 15 to 25 kt. Seas 7 to 11 ft.
.SUN NIGHT...E winds 25 to 35 kt. Seas 10 to 17 ft.
.MON...E winds 25 to 35 kt. Seas 10 to 18 ft.
.MON NIGHT...E winds 25 to 35 kt, diminishing to 20 to 30 kt.
Seas 10 to 18 ft.
.TUE...NE winds 15 to 25 kt. Seas 8 to 14 ft.
.TUE NIGHT...NE winds 5 to 15 kt, becoming N. Seas 6 to 10 ft.

Georges Bank...from the Northeast Channel to the Great South
Channel including waters east of Cape Cod...to the Hague Line

...GALE FORCE WINDS POSSIBLE SUN...

.TONIGHT...N winds 15 to 25 kt. Seas 5 to 9 ft.
.FRI...N winds 10 to 20 kt, becoming variable less than 10 kt.
Seas 4 to 7 ft.
.FRI NIGHT...SW winds 5 to 15 kt. Seas 3 to 4 ft.
.SAT...Variable winds 5 to 15 kt, becoming E 10 to 20 kt. Seas
3 to 5 ft.
.SAT NIGHT...E winds 15 to 25 kt. Seas 7 to 11 ft.
.SUN...E winds 20 to 30 kt, increasing to 30 to 40 kt. Seas
11 to 19 ft.
.SUN NIGHT...E winds 30 to 40 kt. Seas 12 to 21 ft.
.MON...E winds 30 to 40 kt. Seas 15 to 21 ft.
.MON NIGHT...E winds 25 to 35 kt, diminishing to 20 to 30 kt.
Seas 13 to 18 ft.
.TUE...E winds 20 to 25 kt, becoming NE 15 to 25 kt. Seas 10 to
15 ft.
.TUE NIGHT...NE winds 10 to 20 kt. Seas 8 to 12 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

...STORM FORCE WINDS POSSIBLE SUN...

.TONIGHT...N to NE winds 15 to 25 kt, becoming NE 10 to 15 kt.
Seas 5 to 9 ft.
.FRI...E to NE winds 5 to 15 kt, becoming E to SE. Seas 3 to
6 ft.
.FRI NIGHT...S to SE winds 5 to 10 kt. Seas 3 to 4 ft.
.SAT...E winds 15 to 25 kt. Seas 5 to 8 ft. Chance of showers.
.SAT NIGHT...E winds 20 to 30 kt. Seas 8 to 14 ft.
.SUN...E to NE winds 30 to 40 kt, becoming NE 35 to 50 kt. Seas
15 to 25 ft.
.SUN NIGHT...NE winds 40 to 50 kt, becoming E to NE 35 to 45 kt.
Seas 15 to 25 ft.
.MON...E to NE winds 35 to 45 kt. Seas 13 to 21 ft.
.MON NIGHT...E to NE winds 25 to 35 kt. Seas 11 to 18 ft.
.TUE...NE winds 20 to 30 kt. Seas 8 to 14 ft.
.TUE NIGHT...NE winds 15 to 25 kt. Seas 7 to 13 ft.

.Forecaster Collins. Ocean Prediction Center.