831
FZNT21 KWBC 172049
OFFNT1

Offshore Waters Forecast
NWS Ocean Prediction Center Washington DC
449 PM EDT Sun Aug 17 2025

New England continental shelf and slope waters from 25 nm
offshore to the Hague Line, except to 1000 fm south of New
England.

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.

ANZ898-180815-
449 PM EDT Sun Aug 17 2025

.SYNOPSIS FOR NEW ENGLAND WATERS...High pressure just SE of the
area will weaken tonight. A cold front will slowly move S across
the waters tonight into early Mon, then pass S of the area late
Mon and Mon night 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 move N then NE
while passing to the S and SE of the waters Wed through Thu
night. Erin will move well E of the area Fri as high pressure
builds in across the region and moves SE of the waters by Fri
night. Long period S swell from Hurricane Erin will move into
the region Mon night into Tue, then continue through Thu night
before backing to the SE and E Thu through Fri night. For more
information on Hurricane Erin, please closely monitor the latest
forecasts from the National Hurricane Center.

$$

ANZ800-180815-
Gulf of Maine to the Hague Line-
449 PM EDT Sun Aug 17 2025

.TONIGHT...S to SW winds 10 to 20 kt, becoming N to NE 15 to
25 kt. Seas 4 to 7 ft. Chance of showers and tstms.
.MON...N to NE winds 15 to 25 kt. Seas 4 to 7 ft.
.MON NIGHT...N to NE winds 5 to 15 kt, becoming 5 to 10 kt. Seas
3 to 6 ft.
.TUE...NE winds 5 to 10 kt, becoming E. Seas 3 to 4 ft.
.TUE NIGHT...E to SE winds less than 10 kt, becoming S to SE.
Seas 3 to 5 ft.
.WED...E to SE winds less than 10 kt. Seas 4 to 7 ft.
.WED NIGHT...E winds less than 10 kt, increasing to 5 to 15 kt.
Seas 5 to 9 ft.
.THU...E to NE winds 10 to 20 kt. Seas 9 to 15 ft.
.THU NIGHT...NE winds 10 to 20 kt, becoming N. Seas 10 to 16 ft.
.FRI...N winds 10 to 20 kt, diminishing to 5 to 15 kt. Seas 8 to
14 ft.
.FRI NIGHT...W to SW winds 5 to 10 kt, increasing to 10 to
15 kt. Seas 4 to 8 ft.

$$

ANZ805-180815-
Georges Bank between Cape Cod and 68W north of 1000 FM-
449 PM EDT Sun Aug 17 2025

.TONIGHT...SW winds 10 to 20 kt, becoming N to NE 15 to 25 kt.
Seas 4 to 7 ft. Chance of showers and tstms.
.MON...NE winds 15 to 25 kt. Seas 4 to 8 ft. Chance of showers
and tstms.
.MON NIGHT...NE winds 10 to 20 kt, becoming 10 to 15 kt. Seas
4 to 8 ft.
.TUE...E winds 5 to 15 kt. Seas 4 to 8 ft.
.TUE NIGHT...E winds 5 to 15 kt. Seas 5 to 9 ft.
.WED...E winds 5 to 15 kt. Seas 6 to 11 ft.
.WED NIGHT...E winds 10 to 20 kt. Seas 10 to 17 ft.
.THU...NE winds 20 to 30 kt. Seas 13 to 23 ft.
.THU NIGHT...N to NE winds 20 to 30 kt. Seas 14 to 23 ft.
.FRI...N winds 15 to 25 kt, diminishing to 10 to 15 kt. Seas
9 to 16 ft.
.FRI NIGHT...Variable winds less than 10 kt, becoming W to SW.
Seas 6 to 10 ft.

$$

ANZ900-180815-
Georges Bank between 68W and the Hague Line-
449 PM EDT Sun Aug 17 2025

.TONIGHT...S to SW winds 10 to 20 kt, becoming SW 5 to 15 kt,
then, becoming N 15 to 25 kt. Seas 3 to 6 ft. Chance of showers
and tstms.
.MON...N winds 15 to 25 kt. Seas 4 to 7 ft. Chance of showers
and tstms.
.MON NIGHT...NE winds 10 to 20 kt, becoming 10 to 15 kt. Seas
4 to 7 ft.
.TUE...E to NE winds 5 to 15 kt. Seas 4 to 7 ft.
.TUE NIGHT...E winds 5 to 15 kt. Seas 5 to 9 ft.
.WED...E winds 5 to 15 kt. Seas 6 to 11 ft.
.WED NIGHT...E winds 10 to 15 kt, becoming 10 to 20 kt. Seas
10 to 16 ft.
.THU...E to NE winds 20 to 30 kt. Seas 14 to 23 ft.
.THU NIGHT...N to NE winds 20 to 30 kt. Seas 15 to 25 ft.
.FRI...N winds 15 to 25 kt. Seas 11 to 18 ft.
.FRI NIGHT...N to NW winds 5 to 10 kt, becoming W to NW. Seas
6 to 10 ft.

$$

ANZ810-180815-
South of New England between the Great South Channel and Montauk
Point to 1000 FM-
449 PM EDT Sun Aug 17 2025

.TONIGHT...SW winds 10 to 15 kt, becoming NE 15 to 25 kt. Seas
3 to 5 ft. Chance of showers and tstms.
.MON...NE winds 15 to 25 kt. Seas 4 to 8 ft. Chance of showers
and tstms.
.MON NIGHT...E to NE winds 15 to 20 kt. Seas 5 to 8 ft.
.TUE...E winds 10 to 15 kt. Seas 5 to 8 ft.
.TUE NIGHT...E winds 10 to 15 kt. Seas 6 to 10 ft.
.WED...E winds 10 to 15 kt, increasing to 15 to 20 kt. Seas 7 to
12 ft.
.WED NIGHT...E winds 15 to 20 kt, becoming NE. Seas 11 to 18 ft.
.THU...NE winds 20 to 30 kt. Seas 14 to 23 ft.
.THU NIGHT...NE winds 25 to 30 kt, becoming N 20 to 25 kt. Seas
13 to 22 ft.
.FRI...N winds 15 to 25 kt, diminishing to 5 to 15 kt. Seas
10 to 16 ft.
.FRI NIGHT...Variable winds less than 10 kt, becoming S to SW.
Seas 5 to 9 ft.

$$

ANZ815-180815-
South of Long Island between Montauk Point and Sandy Hook to
1000 FM-
449 PM EDT Sun Aug 17 2025

.TONIGHT...S winds 10 to 20 kt, becoming SW 10 to 15 kt, then,
becoming NE 15 to 25 kt. Seas 3 to 4 ft. Chance of showers and
tstms.
.MON...E to NE winds 20 to 30 kt. Seas 5 to 9 ft. Chance of
rain, then chance of showers and slight chance of tstms.
.MON NIGHT...E winds 15 to 25 kt. Seas 5 to 9 ft.
.TUE...E winds 15 to 20 kt, diminishing to 10 to 15 kt. Seas
5 to 8 ft.
.TUE NIGHT...E winds 10 to 15 kt. Seas 6 to 10 ft.
.WED...E winds 10 to 15 kt, increasing to 15 to 20 kt. Seas 7 to
12 ft.
.WED NIGHT...E winds 15 to 20 kt, becoming NE 15 to 25 kt. Seas
11 to 18 ft.
.THU...NE winds 20 to 30 kt. Seas 13 to 21 ft.
.THU NIGHT...N to NE winds 20 to 30 kt. Seas 11 to 19 ft.
.FRI...N to NE winds 10 to 20 kt, becoming variable 5 to 15 kt.
Seas 8 to 14 ft.
.FRI NIGHT...S to SE winds 5 to 10 kt. Seas 5 to 9 ft.

$$

.Forecaster Huffman. Ocean Prediction Center.