New England Continental Shelf

FZNT21 KWBC 150825
OFFNT1

Offshore Waters Forecast
NWS Ocean Prediction Center Washington DC
425 AM EDT Mon Sep 15 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.

ANZ898-152000-
425 AM EDT Mon Sep 15 2025

.SYNOPSIS FOR NEW ENGLAND WATERS...High pressure will build SE
over the waters today and tonight, persist into Tue night, then 
shift E of the area Wed and Wed night. A coastal low pressure 
will approach from the S today and tonight, then remain 
stationary along the Mid-Atlantic coast into Wed night. The low 
will push a warm front into the S portions by Tue night into Wed,
with the front slowly dissipating Wed night into Thu. The low 
will begin moving E late Wed into Thu, still remaining just S of 
the area, before dissipating across the far S and SE portions Thu
night into Fri. A cold front will approach from the NW Fri, then
push offshore Fri night. 

$$

ANZ800-152000-
Gulf of Maine to the Hague Line-
425 AM EDT Mon Sep 15 2025

.TODAY...N to NE winds 5 to 15 kt, becoming NE. Seas 3 to 4 ft. 
.TONIGHT...Variable winds less than 10 kt, becoming N to NE.
Seas 3 to 4 ft. 
.TUE...Variable winds less than 10 kt. Seas 3 to 4 ft. 
.TUE NIGHT...Variable winds less than 10 kt. Seas 3 to 4 ft. 
.WED...Variable winds less than 10 kt, becoming S to SE. Seas
3 to 4 ft. 
.WED NIGHT...S winds less than 10 kt. Seas 3 to 4 ft. 
.THU...S to SW winds 5 to 10 kt. Seas 3 to 4 ft. 
.THU NIGHT...SW winds 5 to 15 kt, becoming W 5 to 10 kt. Seas
3 to 4 ft. 
.FRI...N to NW winds 5 to 15 kt. Seas 3 to 4 ft. 
.FRI NIGHT...N winds 10 to 20 kt. Seas 3 to 5 ft. 

$$

ANZ805-152000-
Georges Bank between Cape Cod and 68W north of 1000 FM-
425 AM EDT Mon Sep 15 2025

.TODAY...N to NE winds 5 to 15 kt. Seas 3 to 4 ft. 
.TONIGHT...E to NE winds 5 to 15 kt. Seas 3 to 5 ft. 
.TUE...E to NE winds 5 to 15 kt, increasing to 10 to 20 kt. Seas
3 to 6 ft. 
.TUE NIGHT...E winds 5 to 15 kt. Seas 3 to 6 ft. 
.WED...E winds 5 to 15 kt. Seas 3 to 5 ft. 
.WED NIGHT...E to SE winds 5 to 10 kt. Seas 3 to 4 ft. 
.THU...S winds less than 10 kt, becoming variable. Seas 3 to
4 ft. 
.THU NIGHT...W to SW winds less than 10 kt. Seas 3 to 4 ft. 
.FRI...W winds 5 to 10 kt, becoming W to NW 5 to 15 kt. Seas
3 to 4 ft. 
.FRI NIGHT...N winds 10 to 20 kt. Seas 3 to 5 ft. 

$$

ANZ900-152000-
Georges Bank between 68W and the Hague Line-
425 AM EDT Mon Sep 15 2025

.TODAY...N to NE winds 5 to 15 kt. Seas 3 to 4 ft. 
.TONIGHT...NE winds 5 to 15 kt. Seas 3 to 4 ft. 
.TUE...E to NE winds 5 to 15 kt. Seas 3 to 5 ft. 
.TUE NIGHT...E winds 5 to 15 kt. Seas 3 to 5 ft. 
.WED...E winds 5 to 15 kt. Seas 3 to 4 ft. 
.WED NIGHT...E to SE winds 5 to 10 kt. Seas 3 to 4 ft. 
.THU...S to SE winds less than 10 kt. Seas 3 to 4 ft. 
.THU NIGHT...S to SW winds less than 10 kt, becoming W to NW.
Seas 3 to 4 ft. 
.FRI...W winds 5 to 10 kt, becoming N to NW 10 to 15 kt. Seas
3 to 4 ft. 
.FRI NIGHT...N winds 10 to 15 kt, increasing to 15 to 20 kt.
Seas 3 to 5 ft. 

$$

ANZ810-152000-
South of New England between the Great South Channel and Montauk
Point to 1000 FM-
425 AM EDT Mon Sep 15 2025

.TODAY...NE winds 5 to 15 kt. Seas 3 to 5 ft. 
.TONIGHT...E to NE winds 10 to 20 kt. Seas 3 to 6 ft. 
.TUE...E to NE winds 10 to 20 kt. Seas 4 to 7 ft. Chance of
tstms. 
.TUE NIGHT...E winds 10 to 20 kt. Seas 4 to 7 ft. Chance of
showers and tstms. 
.WED...E winds 10 to 20 kt, becoming 10 to 15 kt. Seas 3 to
6 ft. 
.WED NIGHT...E to SE winds 5 to 10 kt. Seas 3 to 5 ft. 
.THU...E to SE winds 5 to 10 kt, becoming variable. Seas 3 to
4 ft. 
.THU NIGHT...W to NW winds less than 10 kt, becoming W. Seas
3 to 4 ft. 
.FRI...W to NW winds less than 10 kt. Seas 3 to 4 ft. 
.FRI NIGHT...N to NE winds 10 to 20 kt. Seas 3 to 5 ft. 

$$

ANZ815-152000-
South of Long Island between Montauk Point and Sandy Hook to
1000 FM-
425 AM EDT Mon Sep 15 2025

.TODAY...E to NE winds 5 to 15 kt, increasing to 10 to 20 kt.
Seas 3 to 6 ft. 
.TONIGHT...E winds 10 to 20 kt. Seas 4 to 8 ft. 
.TUE...E to NE winds 15 to 25 kt. Seas 4 to 8 ft. Chance of
tstms. 
.TUE NIGHT...E winds 15 to 25 kt. Seas 4 to 8 ft. Scattered
showers and tstms. 
.WED...E winds 10 to 20 kt. Seas 4 to 7 ft. 
.WED NIGHT...E to NE winds 10 to 20 kt, diminishing to 5 to
15 kt. Seas 3 to 6 ft. 
.THU...NE winds 5 to 15 kt, becoming N. Seas 3 to 4 ft. 
.THU NIGHT...W to SW winds 5 to 10 kt, becoming W 10 to 15 kt.
Seas 3 to 4 ft. 
.FRI...W winds 5 to 15 kt, becoming 5 to 10 kt. Seas 3 to 4 ft. 
.FRI NIGHT...N to NE winds 5 to 15 kt, becoming NE 15 to 20 kt.
Seas 3 to 4 ft. 

$$

.Forecaster Collins. Ocean Prediction Center.