Offshore Waters Forecast (New England)

FZNT21 KWBC 230908
OFFNT1

Offshore Waters Forecast
NWS Ocean Prediction Center Washington DC
508 AM EDT Wed Sep 23 2026

New England continental shelf and slope waters from 60 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.

ANZ898-231945-
508 AM EDT Wed Sep 23 2026

.SYNOPSIS FOR NEW ENGLAND WATERS...Strong high pressure will
build S across the area today, while a stationary front persists
S of the waters. The high will shift E tonight. Low pressure 
will develop along the stalled front S of the area today, then 
remain nearly stationary just S of the area tonight through Thu 
while broadening and strengthening. The low will drift N across 
the outer Mid-Atlantic waters Thu night and Fri, then continue 
moving N into the area Fri night. The low will stall near Georges
Bank Sat through Sun night while slowly weakening. Mariners 
should continue monitoring forecasts for the low pressure, and 
consider avoidance plans as needed. This will be a long duration 
event for the mid- Atlantic and New England coasts, impactful to 
the mariner. 

$$

ANZ800-231945-
Gulf of Maine to the Hague Line-
508 AM EDT Wed Sep 23 2026

...GALE FORCE WINDS POSSIBLE FRI...

.TODAY...E winds 20 to 25 kt, becoming NE 15 to 25 kt. Seas 5 to
9 ft. 
.TONIGHT...E to NE winds 20 to 30 kt. Seas 6 to 10 ft. 
.THU...NE winds 20 to 30 kt. Seas 7 to 12 ft. 
.THU NIGHT...NE winds 20 to 30 kt. Seas 8 to 14 ft. 
.FRI...NE winds 30 to 40 kt. Seas 10 to 17 ft. 
.FRI NIGHT...NE winds 30 to 40 kt. Seas 12 to 16 ft. 
.SAT...NE winds 25 to 35 kt, diminishing to 20 to 30 kt. Seas
11 to 15 ft. 
.SAT NIGHT...NE winds 25 to 35 kt. Seas 11 to 15 ft. 
.SUN...E to NE winds 20 to 30 kt. Seas 9 to 13 ft. 
.SUN NIGHT...E to NE winds 15 to 25 kt, becoming E 10 to 15 kt.
Seas 6 to 10 ft. 

$$

ANZ805-231945-
Georges Bank between Cape Cod and 68W north of 1000 FM-
508 AM EDT Wed Sep 23 2026

...STORM WARNING...

.TODAY...NE winds 25 to 30 kt, increasing to 30 to 40 kt. Seas
10 to 17 ft. 
.TONIGHT...NE winds 30 to 40 kt. Seas 11 to 19 ft. 
.THU...NE winds 30 to 40 kt. Seas 12 to 20 ft. 
.THU NIGHT...NE winds 35 to 45 kt, becoming 35 to 50 kt. Seas
15 to 25 ft. Rain likely. 
.FRI...NE winds 35 to 45 kt. Seas 14 to 23 ft. 
.FRI NIGHT...NE winds 30 to 40 kt, diminishing to 20 to 30 kt.
Seas 12 to 17 ft. 
.SAT...NE winds 15 to 25 kt, becoming SW 10 to 20 kt. Seas 12 to
14 ft. 
.SAT NIGHT...E to NE winds 20 to 30 kt. Seas 10 to 14 ft. 
.SUN...E winds 10 to 20 kt, diminishing to 5 to 15 kt. Seas 8 to
11 ft. 
.SUN NIGHT...E winds 10 to 20 kt, becoming E to SE 5 to 15 kt.
Seas 7 to 9 ft. 

$$

ANZ900-231945-
Georges Bank between 68W and the Hague Line-
508 AM EDT Wed Sep 23 2026

...GALE WARNING...

.TODAY...E to NE winds 25 to 30 kt, becoming NE 25 to 35 kt.
Seas 9 to 16 ft. 
.TONIGHT...NE winds 25 to 35 kt. Seas 10 to 18 ft. 
.THU...NE winds 30 to 40 kt. Seas 12 to 20 ft. 
.THU NIGHT...NE winds 35 to 45 kt. Seas 13 to 23 ft. Rain
likely. 
.FRI...NE winds 35 to 45 kt. Seas 14 to 20 ft. 
.FRI NIGHT...NE winds 30 to 40 kt, becoming E to NE 20 to 30 kt.
Seas 12 to 17 ft. 
.SAT...E to NE winds 15 to 25 kt, becoming S to SW 10 to 20 kt.
Seas 11 to 13 ft. 
.SAT NIGHT...E to SE winds 10 to 20 kt, becoming S to SE. Seas
10 to 13 ft. 
.SUN...E to SE winds 10 to 20 kt. Seas 8 to 10 ft. 
.SUN NIGHT...E winds 10 to 20 kt, becoming S to SE 5 to 15 kt.
Seas 7 to 9 ft. 

$$

ANZ810-231945-
South of New England between the Great South Channel and Montauk
Point to 1000 FM-
508 AM EDT Wed Sep 23 2026

...STORM WARNING...

.TODAY...NE winds 30 to 40 kt. Seas 12 to 18 ft. 
.TONIGHT...NE winds 35 to 40 kt. Seas 15 to 19 ft. 
.THU...NE winds 35 to 40 kt. Seas 17 to 20 ft. 
.THU NIGHT...NE winds 35 to 45 kt, becoming 35 to 50 kt. Seas
17 to 25 ft. Rain likely. 
.FRI...N to NE winds 35 to 50 kt. Seas 17 to 24 ft. 
.FRI NIGHT...N winds 40 to 50 kt, diminishing to 35 to 45 kt.
Seas 12 to 21 ft. 
.SAT...N winds 20 to 30 kt, becoming W to NW. Seas 11 to 14 ft. 
.SAT NIGHT...N to NW winds 30 to 40 kt. Seas 10 to 14 ft. 
.SUN...N winds 20 to 30 kt, becoming W to NW less than 10 kt.
Seas 7 to 11 ft. 
.SUN NIGHT...Variable winds less than 10 kt, becoming W to NW.
Seas 5 to 7 ft. 

$$

ANZ815-231945-
South of Long Island between Montauk Point and Sandy Hook to
1000 FM-
508 AM EDT Wed Sep 23 2026

...GALE WARNING...
...STORM FORCE WINDS POSSIBLE FRI...

.TODAY...NE winds 30 to 40 kt. Seas 12 to 18 ft. 
.TONIGHT...NE winds 30 to 40 kt. Seas 16 to 19 ft. 
.THU...NE winds 35 to 40 kt. Seas 17 to 19 ft. 
.THU NIGHT...NE winds 35 to 45 kt. Seas 17 to 22 ft. Rain
likely. 
.FRI...NE winds 40 to 50 kt, becoming N. Seas 18 to 23 ft. 
.FRI NIGHT...N winds 35 to 50 kt, becoming 35 to 45 kt. Seas
13 to 23 ft. 
.SAT...N to NW winds 25 to 35 kt, becoming NW 25 to 30 kt. Seas
11 to 15 ft. 
.SAT NIGHT...N to NW winds 30 to 40 kt. Seas 10 to 14 ft. 
.SUN...N to NW winds 25 to 30 kt, diminishing to 10 to 15 kt.
Seas 6 to 11 ft. 
.SUN NIGHT...N winds 10 to 20 kt, becoming NW 5 to 10 kt. Seas
5 to 7 ft. 

$$

.Forecaster Connelly. Ocean Prediction Center.