New England Continental Shelf

FZNT21 KWBC 180822
OFFNT1

Offshore Waters Forecast
NWS Ocean Prediction Center Washington DC
422 AM EDT Tue Mar 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.

ANZ898-182015-
422 AM EDT Tue Mar 18 2025

.SYNOPSIS FOR NEW ENGLAND WATERS...A strong cold front will move
E across the waters today as low pressure develops and tracks E
along the front. High pressure will build E over the area later
today and tonight, then persist into Wed night while shifting NE
of the waters. Another strong cold front will approach the area
from the W Thu and Thu night, then move E into the area later Thu
night into Fri as low pressure develops along the front. The low
will pass E of the waters Fri night. High pressure will quickly
move E through the area Sat, followed by another cold front
moving into the waters Sat night.

$$

ANZ800-182015-
Gulf of Maine to the Hague Line-
422 AM EDT Tue Mar 18 2025

.TODAY...N winds 15 to 25 kt. Seas 7 to 12 ft. Rain likely with
vsby 1 nm or less. 
.TONIGHT...N to NE winds 10 to 20 kt, becoming NE 5 to 15 kt.
Seas 6 to 10 ft. 
.WED...E to NE winds 10 to 15 kt. Seas 5 to 7 ft. 
.WED NIGHT...E to SE winds 5 to 15 kt. Seas 4 to 7 ft. 
.THU...SE winds 10 to 15 kt. Seas 5 to 7 ft. 
.THU NIGHT...SE winds 10 to 15 kt. Seas 5 to 7 ft. 
.FRI...S to SE winds 10 to 20 kt, becoming W to NW. Seas 5 to
9 ft. 
.FRI NIGHT...NW winds 15 to 25 kt. Seas 6 to 10 ft. 
.SAT...NW winds 15 to 25 kt, becoming W 10 to 20 kt. Seas 6 to
11 ft. 
.SAT NIGHT...W winds 15 to 20 kt. Seas 4 to 8 ft. 

$$

ANZ805-182015-
Georges Bank between Cape Cod and 68W north of 1000 FM-
422 AM EDT Tue Mar 18 2025

.TODAY...N winds 20 to 30 kt. Seas 9 to 15 ft. Rain with vsby
1 nm or less. 
.TONIGHT...N to NE winds 15 to 25 kt. Seas 6 to 11 ft. Chance of
rain. 
.WED...NE winds 10 to 20 kt. Seas 5 to 9 ft. 
.WED NIGHT...E winds 10 to 15 kt. Seas 5 to 9 ft. Areas of fog
with vsby 1 nm or less. 
.THU...E to SE winds 5 to 10 kt. Seas 6 to 9 ft. 
.THU NIGHT...S to SE winds 10 to 15 kt. Seas 6 to 8 ft. 
.FRI...S to SW winds 15 to 25 kt, becoming W 20 to 30 kt. Seas
7 to 12 ft. 
.FRI NIGHT...NW winds 20 to 30 kt. Seas 8 to 14 ft. 
.SAT...W to SW winds 15 to 25 kt. Seas 7 to 12 ft. 
.SAT NIGHT...SW winds 15 to 20 kt, becoming W 10 to 15 kt. Seas
4 to 8 ft. 

$$

ANZ900-182015-
Georges Bank between 68W and the Hague Line-
422 AM EDT Tue Mar 18 2025

.TODAY...S winds 15 to 25 kt, becoming N. Seas 10 to 15 ft. Rain
with vsby 1 nm or less. 
.TONIGHT...N to NE winds 15 to 25 kt. Seas 7 to 11 ft. Chance of
rain with vsby 1 nm or less. 
.WED...NE winds 15 to 20 kt. Seas 6 to 9 ft. 
.WED NIGHT...E to NE winds 15 to 20 kt, becoming E 10 to 15 kt.
Seas 6 to 9 ft. Areas of fog with vsby 1 nm or less. 
.THU...E winds 10 to 15 kt. Seas 7 to 9 ft. 
.THU NIGHT...E to SE winds 10 to 15 kt, becoming S to SE 5 to
10 kt. Seas 6 to 8 ft. 
.FRI...S to SW winds 10 to 20 kt, becoming W to SW 15 to 25 kt.
Seas 6 to 11 ft. 
.FRI NIGHT...W winds 15 to 25 kt, becoming NW 20 to 30 kt. Seas
9 to 14 ft. 
.SAT...W winds 15 to 25 kt. Seas 8 to 13 ft. 
.SAT NIGHT...SW winds 15 to 20 kt, becoming W. Seas 6 to 10 ft. 

$$

ANZ810-182015-
South of New England between the Great South Channel and Montauk
Point to 1000 FM-
422 AM EDT Tue Mar 18 2025

...GALE FORCE WINDS POSSIBLE FRI...

.TODAY...N winds 20 to 30 kt. Seas 8 to 14 ft. Chance of rain. 
.TONIGHT...N to NE winds 15 to 25 kt. Seas 6 to 11 ft. 
.WED...NE winds 10 to 20 kt. Seas 4 to 8 ft. 
.WED NIGHT...E winds 10 to 15 kt, becoming E to SE 5 to 10 kt.
Seas 5 to 8 ft. Areas of fog with vsby 1 nm or less. 
.THU...SE winds 5 to 10 kt, increasing to 10 to 15 kt. Seas 5 to
8 ft. 
.THU NIGHT...SE winds 10 to 15 kt, becoming S 10 to 20 kt. Seas
6 to 8 ft. 
.FRI...W to SW winds 20 to 30 kt, becoming W to NW 25 to 35 kt.
Seas 7 to 13 ft. 
.FRI NIGHT...NW winds 20 to 30 kt. Seas 8 to 14 ft. 
.SAT...W winds 15 to 25 kt, becoming SW 15 to 20 kt. Seas 7 to
11 ft. 
.SAT NIGHT...W winds 15 to 20 kt, diminishing to 10 to 15 kt.
Seas 5 to 8 ft. 

$$

ANZ815-182015-
South of Long Island between Montauk Point and Sandy Hook to
1000 FM-
422 AM EDT Tue Mar 18 2025

...GALE FORCE WINDS POSSIBLE FRI...

.TODAY...N winds 15 to 25 kt. Seas 7 to 12 ft. Chance of rain. 
.TONIGHT...N to NE winds 15 to 25 kt. Seas 5 to 9 ft. 
.WED...NE winds 10 to 20 kt, diminishing to 5 to 15 kt. Seas
4 to 7 ft. 
.WED NIGHT...E winds 10 to 15 kt, becoming SE 5 to 10 kt. Seas
4 to 7 ft. 
.THU...SE winds 10 to 15 kt, becoming S to SE 10 to 20 kt. Seas
5 to 8 ft. 
.THU NIGHT...S to SE winds 10 to 20 kt, becoming W to NW 20 to
30 kt. Seas 6 to 9 ft. 
.FRI...W to NW winds 25 to 35 kt. Seas 7 to 13 ft. 
.FRI NIGHT...W to NW winds 20 to 30 kt. Seas 7 to 12 ft. 
.SAT...W winds 10 to 15 kt, becoming SW. Seas 4 to 7 ft. 
.SAT NIGHT...W winds 10 to 20 kt, becoming 10 to 15 kt. Seas
4 to 7 ft. 

$$

.Forecaster Kells. Ocean Prediction Center.