290
FZNT33 KWBC 180859
OFFN31

Marine Weather HF Voice Broadcast
NWS Ocean Prediction Center Washington DC
459 AM EDT Mon Aug 18 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 across the S
waters this morning will pass S of the area today and tonight as
high pressure builds S across the region. The high will remain
over the area Tue, then shift E of the area Tue night through Wed
night. Hurricane Erin will remain S and E of the waters. Tropical
storm conditions will be possible in the far SE waters Thu night
as it lifts NE through the Outer Mid- Atlantic Waters. Long
period S swell from Hurricane Erin will move into the region Tue,
then continue through Thu night before backing to the SE and E
Thu night through Fri night. A high pressure ridge will build
across the waters late Fri and Fri night. For more information on
Hurricane Erin, please closely monitor the latest forecasts from
the National Hurricane Center.

Gulf of Maine to the Hague Line

.TODAY...N winds 15 to 25 kt. Seas 4 to 7 ft.
.TONIGHT...N winds 5 to 15 kt, becoming NE. Seas 3 to 6 ft.
.TUE...NE winds 5 to 10 kt, becoming E. Seas 3 to 4 ft.
.TUE NIGHT...Variable winds less than 10 kt, becoming S to SE.
Seas 3 to 5 ft.
.WED...Variable winds less than 5 kt, becoming SE. Seas 3 to
6 ft.
.WED NIGHT...E to SE winds less than 10 kt. Seas 4 to 8 ft.
.THU...E winds 5 to 15 kt, becoming E to NE 10 to 20 kt. Seas
7 to 13 ft.
.THU NIGHT...NE winds 15 to 25 kt. Seas 10 to 17 ft.
.FRI...NE winds 15 to 25 kt, becoming N 10 to 20 kt. Seas 10 to
17 ft.
.FRI NIGHT...Variable winds less than 10 kt, becoming W to SW.
Seas 6 to 11 ft.

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

...TROPICAL STORM CONDITIONS POSSIBLE THU NIGHT...

.TODAY...N to NE winds 15 to 25 kt. Seas 4 to 7 ft. Isolated
showers and tstms.
.TONIGHT...NE winds 10 to 20 kt, becoming 10 to 15 kt. Seas 4 to
8 ft.
.TUE...E to NE winds 5 to 15 kt. Seas 4 to 7 ft.
.TUE NIGHT...E winds 5 to 15 kt. Seas 4 to 8 ft.
.WED...E winds 5 to 15 kt. Seas 6 to 10 ft.
.WED NIGHT...E winds 5 to 15 kt, increasing to 10 to 20 kt. Seas
9 to 15 ft.
.THU...E winds 15 to 25 kt, becoming NE 20 to 30 kt. Seas 13 to
23 ft.
.THU NIGHT...Tropical storm conditions possible.
.FRI...Tropical storm conditions possible.
.FRI NIGHT...N winds 15 to 25 kt, becoming N to NW 5 to 15 kt.
Seas 9 to 15 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...NE winds 20 to 30 kt. Seas 4 to 8 ft. Isolated showers
and tstms.
.TONIGHT...E to NE winds 15 to 20 kt. Seas 5 to 9 ft.
.TUE...E winds 10 to 20 kt, becoming 10 to 15 kt. Seas 5 to
8 ft.
.TUE NIGHT...E winds 10 to 15 kt. Seas 5 to 9 ft.
.WED...E winds 10 to 15 kt. Seas 7 to 12 ft.
.WED NIGHT...E winds 15 to 25 kt. Seas 10 to 16 ft.
.THU...NE winds 20 to 30 kt. Seas 14 to 24 ft.
.THU NIGHT...NE winds 20 to 30 kt. Seas 15 to 25 ft.
.FRI...N winds 20 to 30 kt. Seas 12 to 20 ft.
.FRI NIGHT...E to NE winds 5 to 15 kt, becoming variable. Seas
8 to 14 ft.

.Forecaster Connelly. Ocean Prediction Center.