Offshore Forecast
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517
FZNT33 KWBC 291503
OFFN31

Marine Weather HF Voice Broadcast
NWS Ocean Prediction Center Washington DC
1103 AM EDT Sun Jun 29 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...Weak low pressure developing
over the Gulf of Maine late this morning will move off to the E
of the area later today and tonight. A weak cold front extending
SW from the low will move SE over the area behind the low today
into early tonight, and then become nearly stationary over the S
waters later tonight. The front should slowly dissipate Mon as
high pressure builds in. The high will move E Mon night and Tue
ahead of a slow-moving cold front. The front will likely reach
the coast Tue night, and then weaken as it drifts offshore Tue
night and Wed. Another slow-moving cold front will approach the
coast Wed night into Thu, and finally push offshore Thu night.

Gulf of Maine to the Hague Line

.TODAY...W winds less than 10 kt, becoming W to SW. Seas 2 to
4 ft. Scattered showers and areas of fog with vsby 1 nm or less.
.TONIGHT...W to SW winds less than 10 kt, becoming W to NW. Seas
3 to 4 ft. Areas of fog with vsby 1 nm or less.
.MON...W to NW winds less than 5 kt, becoming S to SW. Seas 3 to
4 ft. Areas of fog with vsby 1 nm or less.
.MON NIGHT...S winds 5 to 15 kt. Seas 3 to 4 ft. Areas of fog
with vsby 1 nm or less.
.TUE...S winds 15 to 25 kt. Seas 3 to 5 ft.
.TUE NIGHT...SW winds 15 to 25 kt. Seas 3 to 6 ft.
.WED...SW winds 10 to 20 kt. Seas 3 to 6 ft.
.WED NIGHT...SW winds 10 to 20 kt, becoming W to SW 5 to 15 kt.
Seas 3 to 6 ft.
.THU...W to SW winds 5 to 10 kt, becoming SW 10 to 20 kt. Seas
3 to 5 ft.
.THU NIGHT...SW winds 10 to 20 kt, becoming W. 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

.TODAY...SW winds 5 to 15 kt. Seas 3 to 5 ft. Scattered showers,
tstms and areas of fog with vsby 1 nm or less.
.TONIGHT...W winds 5 to 15 kt, diminishing to less than 10 kt.
Seas 3 to 4 ft. Scattered showers, tstms and areas of fog with
vsby 1 nm or less.
.MON...W to SW winds less than 10 kt. Seas 3 to 4 ft. Chance of
showers, tstms and areas of fog with vsby 1 nm or less.
.MON NIGHT...S to SW winds 5 to 15 kt. Seas 3 to 4 ft. Chance of
showers, areas of fog and chance of tstms with vsby 1 nm or
less.
.TUE...S to SW winds 10 to 20 kt. Seas 3 to 5 ft.
.TUE NIGHT...SW winds 15 to 25 kt. Seas 4 to 7 ft.
.WED...SW winds 10 to 20 kt. Seas 4 to 7 ft.
.WED NIGHT...SW winds 10 to 20 kt, becoming 10 to 15 kt. Seas
3 to 6 ft.
.THU...SW winds 5 to 10 kt, increasing to 15 to 25 kt. Seas 3 to
5 ft.
.THU NIGHT...W to SW winds 10 to 20 kt. Seas 3 to 5 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

.TODAY...W winds 5 to 15 kt, becoming SW. Seas 2 to 4 ft. Areas
of fog with vsby 1 nm or less.
.TONIGHT...W to SW winds 5 to 15 kt. Seas 3 to 4 ft. Areas of
fog, scattered showers and tstms with vsby 1 nm or less.
.MON...Variable winds 5 to 10 kt, becoming SW. Seas 3 to 4 ft.
Chance of showers and tstms with vsby 1 nm or less.
.MON NIGHT...S to SW winds 5 to 15 kt, becoming SW 10 to 20 kt.
Seas 3 to 4 ft. Chance of showers, tstms and areas of fog with
vsby 1 nm or less.
.TUE...SW winds 15 to 25 kt. Seas 4 to 7 ft.
.TUE NIGHT...SW winds 15 to 25 kt. Seas 4 to 7 ft.
.WED...SW winds 10 to 20 kt, diminishing to 5 to 15 kt. Seas
4 to 7 ft.
.WED NIGHT...SW winds 10 to 15 kt, becoming W 5 to 10 kt. Seas
3 to 6 ft.
.THU...W winds less than 10 kt, becoming SW. Seas 3 to 5 ft.
.THU NIGHT...SW winds 10 to 15 kt, becoming W. Seas 3 to 4 ft.

.Forecaster Mills. Ocean Prediction Center.