736
FZNT33 KWBC 210257
OFFN31

Marine Weather HF Voice Broadcast
NWS Ocean Prediction Center Washington DC
1057 PM EDT Wed Aug 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...High pressure over the N
waters will gradually shift NE of the area later tonight. The
center of Hurricane Erin is expected to track NE through the
outer Mid-Atlantic Waters Thu into Fri, remaining S and then SE
of the waters. Erin will then move farther away from the area
over the N Atlantic 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 gradually approach the waters from
the W late Sun night, then move E across the area Mon and Mon
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...SE winds 5 to 10 kt, becoming E to SE 5 to 15 kt.
Seas 4 to 7 ft. Chance of showers.
.THU...E winds 10 to 20 kt. Seas 6 to 10 ft. Chance of showers.
.THU NIGHT...NE winds 20 to 30 kt. Seas 9 to 16 ft.
.FRI...N to NE winds 20 to 30 kt. Seas 10 to 19 ft.
.FRI NIGHT...N winds 10 to 20 kt, becoming SW. Seas 8 to 16 ft.
.SAT...S to SW winds 10 to 20 kt. Seas 6 to 11 ft.
.SAT NIGHT...S winds 10 to 20 kt. Seas 5 to 9 ft.
.SUN...S winds 10 to 15 kt, becoming 10 to 20 kt. Seas 4 to
8 ft.
.SUN NIGHT...S winds 10 to 20 kt, becoming 10 to 15 kt. Seas
4 to 6 ft.
.MON...S winds 10 to 15 kt. Seas 3 to 4 ft.
.MON NIGHT...S winds 5 to 15 kt, becoming SW 5 to 10 kt. Seas
3 to 5 ft.

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

...TROPICAL STORM WARNING...

.TONIGHT...E winds 15 to 25 kt. Seas 7 to 12 ft. Chance of
showers.
.THU...E winds 20 to 30 kt. Seas 10 to 19 ft. Chance of showers
and tstms.
.THU NIGHT...E to NE winds 35 to 45 kt. Seas 14 to 29 ft. Rain.
.FRI...N to NE winds 40 to 50 kt, becoming N 30 to 40 kt. Seas
16 to 31 ft. Chance of showers and scattered tstms.
.FRI NIGHT...N winds 20 to 30 kt, becoming W 15 to 25 kt. Seas
12 to 23 ft.
.SAT...SW winds 10 to 20 kt, becoming S. Seas 8 to 14 ft.
.SAT NIGHT...S to SE winds 5 to 15 kt. Seas 6 to 10 ft.
.SUN...S to SE winds 5 to 15 kt. Seas 5 to 9 ft.
.SUN NIGHT...S winds 5 to 15 kt. Seas 4 to 7 ft.
.MON...S to SE winds 5 to 15 kt. Seas 3 to 6 ft.
.MON NIGHT...S to SW winds 10 to 20 kt, becoming W 5 to 15 kt.
Seas 3 to 6 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 15 to 25 kt. Seas 8 to 15 ft. Chance of
showers and tstms.
.THU...E to NE winds 20 to 30 kt, becoming NE 25 to 35 kt. Seas
12 to 23 ft. Chance of showers and tstms.
.THU NIGHT...N to NE winds 30 to 40 kt. Seas 14 to 28 ft. Chance
of showers and tstms.
.FRI...N winds 25 to 35 kt, diminishing to 20 to 30 kt. Seas
14 to 27 ft. Chance of showers.
.FRI NIGHT...N to NE winds 20 to 30 kt, becoming W to SW 15 to
25 kt. Seas 10 to 18 ft.
.SAT...SW winds 10 to 20 kt, becoming S to SE. Seas 7 to 12 ft.
.SAT NIGHT...S winds 5 to 15 kt. Seas 5 to 9 ft.
.SUN...S winds 5 to 15 kt. Seas 4 to 8 ft.
.SUN NIGHT...S to SE winds 5 to 15 kt. Seas 4 to 7 ft.
.MON...S to SE winds 5 to 15 kt. Seas 3 to 6 ft.
.MON NIGHT...W to SW winds 5 to 15 kt. Seas 3 to 5 ft.

.Forecaster Mills. Ocean Prediction Center.