Offshore Forecast
Issued by NWS

Home |  Current Version |  Previous Version |  Text Only |  Print | Product List |  Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28
657
FZNT33 KWBC 210234
OFFN31

Marine Weather HF Voice Broadcast
NWS Ocean Prediction Center Washington DC
934 PM EST Thu Nov 20 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...Behind low pressure moving E
of the SE waters, high pressure will build over the area tonight.
High pressure will move E Fri as a cold front approaches from the
NW. The cold front will move through most of the waters Fri
night, slowing over the SE waters late Fri night and Sat as low
pressure moves NE along the front. The low will move well out
into the N Atlantic Sat night, followed by high pressure building
E and continuing through Sun night. A weakening cold front may
move through the area late Sun night and Mon, with high pressure
building in again during Mon and continuing Mon night. High
pressure will move E Tue, then a warm front should move N across
the area Tue night.

Gulf of Maine to the Hague Line

.TONIGHT...N winds less than 10 kt, becoming variable. Seas 3 to
4 ft.
.FRI...SW winds 5 to 15 kt, increasing to 10 to 20 kt. Seas 3 to
4 ft.
.FRI NIGHT...W to SW winds 10 to 20 kt. Seas 3 to 5 ft.
.SAT...NW winds 10 to 15 kt, becoming N to NW 15 to 20 kt. Seas
3 to 4 ft. Rain likely.
.SAT NIGHT...N to NW winds 15 to 25 kt. Seas 3 to 5 ft.
.SUN...NW winds 5 to 15 kt, becoming W. Seas 3 to 5 ft.
.SUN NIGHT...W winds 10 to 20 kt, becoming NW. Seas 3 to 5 ft.
.MON...NW winds 15 to 25 kt. Seas 4 to 7 ft.
.MON NIGHT...NW winds 15 to 25 kt, becoming N 10 to 20 kt. Seas
4 to 7 ft.
.TUE...N winds 5 to 15 kt, becoming NW. Seas 3 to 5 ft.
.TUE NIGHT...SW winds 5 to 15 kt, becoming S. 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

...GALE FORCE WINDS POSSIBLE SAT NIGHT...

.TONIGHT...N winds 5 to 15 kt. Seas 3 to 5 ft.
.FRI...N to NW winds less than 10 kt, becoming W to SW. Seas
3 to 4 ft.
.FRI NIGHT...SW winds 10 to 20 kt, diminishing to 5 to 15 kt.
Seas 3 to 5 ft.
.SAT...S to SW winds 5 to 15 kt, becoming N 20 to 30 kt. Seas
3 to 6 ft. Rain likely and areas of fog with vsby 1 nm or less.
.SAT NIGHT...N winds 25 to 35 kt, diminishing to 15 to 25 kt.
Seas 3 to 6 ft.
.SUN...N to NW winds 5 to 10 kt, becoming W 5 to 15 kt. Seas
3 to 6 ft.
.SUN NIGHT...W to NW winds 15 to 25 kt. Seas 3 to 6 ft.
.MON...NW winds 20 to 30 kt. Seas 5 to 9 ft.
.MON NIGHT...N to NW winds 15 to 25 kt. Seas 5 to 9 ft.
.TUE...N to NW winds 10 to 20 kt, becoming NW less than 10 kt.
Seas 4 to 7 ft.
.TUE NIGHT...Variable winds less than 10 kt, becoming S to SE
10 to 20 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 less than 10 kt, becoming variable. Seas 3 to
4 ft.
.FRI...Variable winds less than 10 kt, becoming SW 10 to 20 kt.
Seas 3 to 4 ft.
.FRI NIGHT...SW winds 10 to 15 kt, becoming W to SW 5 to 10 kt.
Seas 3 to 4 ft. Rain likely and areas of fog with vsby 1 nm or
less.
.SAT...N winds 5 to 15 kt, increasing to 15 to 20 kt. Seas 3 to
5 ft. Rain likely.
.SAT NIGHT...N winds 15 to 25 kt. Seas 3 to 5 ft.
.SUN...W to NW winds less than 10 kt, becoming W. Seas 3 to
5 ft.
.SUN NIGHT...NW winds 10 to 20 kt. Seas 3 to 6 ft.
.MON...NW winds 15 to 25 kt. Seas 4 to 8 ft.
.MON NIGHT...N to NW winds 15 to 25 kt. Seas 4 to 8 ft.
.TUE...N to NE winds less than 10 kt, becoming SE 10 to 20 kt.
Seas 3 to 5 ft.
.TUE NIGHT...S to SE winds 15 to 25 kt. Seas 4 to 7 ft.

.Forecaster Connelly. Ocean Prediction Center.