698
FZNT33 KWBC 200259
OFFN31

Marine Weather HF Voice Broadcast
NWS Ocean Prediction Center Washington DC
1059 PM EDT Tue Aug 19 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 over the region
will gradually shift E of the area tonight through Wed night. The
center of Hurricane Erin is expected to pass NE through the Outer
Mid- Atlantic Waters Thu night into Fri, remaining S of the
waters. Tropical storm conditions are expected to cover nearly
all of the waters along and S of Georges Bank late Thu through
Fri.. Erin will move farther away from the area Fri night into
Sat. Long period S swell from Hurricane Erin will continue
through Thu night before backing to the SE and E Fri night. A
high pressure ridge will move E across the waters Fri night and
Sat, then shift E of the area Sat night into Sun. A cold front
will near the region from the W by Sun 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

.TONIGHT...Variable winds less than 10 kt. Seas 3 to 5 ft.
.WED...E to SE winds 5 to 10 kt. Seas 3 to 5 ft.
.WED NIGHT...E winds less than 10 kt, increasing to 5 to 15 kt.
Seas 3 to 6 ft.
.THU...E winds 5 to 15 kt, increasing to 10 to 20 kt. Seas 6 to
10 ft.
.THU NIGHT...NE winds 20 to 30 kt. Seas 9 to 16 ft.
.FRI...NE winds 20 to 30 kt, becoming N. Seas 11 to 19 ft.
.FRI NIGHT...N to NE winds 10 to 20 kt. Seas 10 to 17 ft.
.SAT...N winds 5 to 15 kt, becoming S. Seas 6 to 10 ft.
.SAT NIGHT...S winds 10 to 20 kt. Seas 4 to 8 ft.
.SUN...S winds 10 to 20 kt. Seas 5 to 6 ft.
.SUN NIGHT...S winds 15 to 20 kt. Seas 5 to 6 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...

.TONIGHT...E winds 5 to 10 kt, becoming 5 to 15 kt. Seas 4 to
8 ft.
.WED...E winds 5 to 15 kt. Seas 4 to 8 ft.
.WED NIGHT...E winds 15 to 25 kt. Seas 7 to 12 ft.
.THU...E winds 20 to 30 kt. Seas 12 to 20 ft. Chance of rain.
.THU NIGHT...NE winds 30 to 40 kt. Seas 16 to 29 ft.
.FRI...N to NE winds 35 to 45 kt. Seas 15 to 30 ft.
.FRI NIGHT...N winds 25 to 35 kt, diminishing to 20 to 30 kt.
Seas 15 to 25 ft.
.SAT...N winds 10 to 20 kt, becoming N to NE less than 10 kt.
Seas 8 to 14 ft.
.SAT NIGHT...S to SE winds 5 to 15 kt. Seas 5 to 9 ft.
.SUN...S winds 5 to 15 kt, increasing to 10 to 20 kt. Seas 5 to
7 ft.
.SUN NIGHT...S winds 10 to 20 kt, becoming 10 to 15 kt. Seas
5 to 7 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

...TROPICAL STORM WARNING...

.TONIGHT...E winds 10 to 15 kt. Seas 5 to 8 ft.
.WED...E winds 10 to 15 kt, becoming 10 to 20 kt. Seas 5 to
9 ft. Chance of showers.
.WED NIGHT...E winds 15 to 25 kt. Seas 9 to 15 ft. Chance of
showers.
.THU...E to NE winds 20 to 30 kt, becoming NE 30 to 40 kt. Seas
15 to 24 ft. Chance of rain.
.THU NIGHT...N to NE winds 30 to 40 kt. Seas 14 to 29 ft.
.FRI...N winds 30 to 40 kt. Seas 15 to 28 ft.
.FRI NIGHT...N winds 20 to 30 kt, diminishing to 5 to 15 kt.
Seas 13 to 21 ft.
.SAT...N to NE winds 5 to 15 kt, becoming S to SE 5 to 10 kt.
Seas 7 to 12 ft.
.SAT NIGHT...S winds 5 to 15 kt. Seas 5 to 9 ft.
.SUN...S winds 10 to 15 kt. Seas 4 to 7 ft.
.SUN NIGHT...S winds 10 to 15 kt. Seas 4 to 7 ft.

.Forecaster Connelly. Ocean Prediction Center.