815
FZNT21 KWBC 181509
OFFNT1

Offshore Waters Forecast
NWS Ocean Prediction Center Washington DC
1109 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.

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.

ANZ898-190315-
1109 AM EDT Mon Aug 18 2025

.SYNOPSIS FOR NEW ENGLAND WATERS...A cold front across the far S
waters this morning, will pass S of the area early today, 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 be near 29.5N 73.5W at 8 AM EDT Wed,
then move to near 31.7N 73.1W by 8 PM EDT Wed night, then to
33.9N 71.6W by 8 AM ED Thu, then continue to move NE through Fri
night. 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 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.

$$

ANZ800-190315-
Gulf of Maine to the Hague Line-
1109 AM EDT Mon Aug 18 2025

.TODAY...N winds 10 to 20 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...N winds 5 to 15 kt, becoming W to SW. Seas 6 to
11 ft.

$$

ANZ805-190315-
Georges Bank between Cape Cod and 68W north of 1000 FM-
1109 AM EDT Mon Aug 18 2025

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

.TODAY...NE winds 15 to 20 kt. Seas 5 to 7 ft.
.TONIGHT...NE winds 10 to 20 kt, becoming 10 to 15 kt. Seas 4 to
8 ft.
.TUE...NE winds 5 to 15 kt, becoming E. Seas 4 to 7 ft.
.TUE NIGHT...E to SE 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...N winds 20 to 30 kt. Seas 15 to 24 ft, subsiding to 10 to
17 ft.
.FRI NIGHT...N to NE winds 10 to 20 kt, becoming W to NW 5 to
15 kt. Seas 8 to 14 ft.

$$

ANZ900-190315-
Georges Bank between 68W and the Hague Line-
1109 AM EDT Mon Aug 18 2025

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

.TODAY...N winds 15 to 20 kt. Seas 5 to 7 ft.
.TONIGHT...N to NE winds 10 to 20 kt, becoming NE 10 to 15 kt.
Seas 4 to 7 ft.
.TUE...NE winds 5 to 15 kt, becoming E to NE 5 to 10 kt. Seas
4 to 7 ft.
.TUE NIGHT...E winds 5 to 10 kt. Seas 4 to 8 ft.
.WED...E winds 5 to 10 kt, becoming 5 to 15 kt. Seas 5 to 9 ft.
.WED NIGHT...E winds 5 to 15 kt, increasing to 10 to 20 kt. Seas
8 to 13 ft.
.THU...E winds 15 to 25 kt, becoming NE 20 to 30 kt. Seas 13 to
21 ft.
.THU NIGHT...Tropical storm conditions possible.
.FRI...Tropical storm conditions possible.
.FRI NIGHT...N winds 15 to 25 kt, diminishing to 5 to 15 kt.
Seas 9 to 15 ft.

$$

ANZ810-190315-
South of New England between the Great South Channel and Montauk
Point to 1000 FM-
1109 AM EDT Mon Aug 18 2025

.TODAY...NE winds 15 to 25 kt. Seas 5 to 8 ft.
.TONIGHT...E to NE winds 15 to 20 kt. Seas 5 to 8 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 11 ft.
.WED NIGHT...E winds 15 to 25 kt. Seas 9 to 16 ft.
.THU...E to NE winds 20 to 30 kt. Seas 14 to 24 ft.
.THU NIGHT...NE winds 25 to 30 kt. Seas 15 to 25 ft.
.FRI...N to NE winds 20 to 30 kt. Seas 14 to 22 ft.
.FRI NIGHT...E to NE winds 10 to 20 kt, becoming W to SW. Seas
8 to 14 ft.

$$

ANZ815-190315-
South of Long Island between Montauk Point and Sandy Hook to
1000 FM-
1109 AM EDT Mon Aug 18 2025

.TODAY...NE winds 15 to 25 kt. Seas 6 to 8 ft.
.TONIGHT...E winds 15 to 20 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 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 23 ft.
.THU NIGHT...NE winds 20 to 30 kt. Seas 14 to 24 ft.
.FRI...N winds 15 to 25 kt, becoming NE 10 to 20 kt. Seas 12 to
19 ft.
.FRI NIGHT...E to SE winds 5 to 15 kt, becoming S to SW. Seas
7 to 12 ft.

$$

.Forecaster Holley. Ocean Prediction Center.