Offshore Waters Forecast (New England)

FZNT21 KWBC 182021
OFFNT1

Offshore Waters Forecast
NWS Ocean Prediction Center Washington DC
421 PM EDT Wed Mar 18 2026

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.

ANZ898-190830-
421 PM EDT Wed Mar 18 2026

.SYNOPSIS FOR NEW ENGLAND WATERS...High pressure building into 
the waters tonight will continue into Thu. A cold front will
approach from the W Thu night and move through the waters Fri,
then lift back N as a warm front Fri night. Another cold front
will move through the area Sat and Sat night, then lift N as a
warm front Sun as another low nears from the W. This low and its
associated cold front will push E across the waters Sun night
into late Mon, with another high building in from the W behind 
it Mon night.

$$

ANZ800-190830-
Gulf of Maine to the Hague Line-
421 PM EDT Wed Mar 18 2026

.TONIGHT...W to SW winds less than 10 kt, becoming S, then,
becoming S to SE. Seas 4 to 8 ft. Light freezing spray. 
.THU...SE winds 5 to 10 kt, becoming S 5 to 15 kt. Seas 4 to
5 ft. 
.THU NIGHT...S winds 10 to 20 kt, becoming SW. Seas 3 to 5 ft. 
.FRI...W to SW winds 10 to 20 kt. Seas 3 to 5 ft. 
.FRI NIGHT...S winds 15 to 25 kt. Seas 4 to 6 ft. 
.SAT...S to SW winds 15 to 25 kt, becoming W 10 to 20 kt. Seas
4 to 6 ft. 
.SAT NIGHT...N to NW winds 5 to 15 kt, becoming E 5 to 10 kt.
Seas 3 to 6 ft. 
.SUN...S to SE winds 15 to 25 kt. Seas 4 to 6 ft. 
.SUN NIGHT...S to SW winds 15 to 25 kt. Seas 5 to 7 ft. 
.MON...N winds 20 to 25 kt, becoming NW 10 to 20 kt. Seas 5 to
9 ft. 
.MON NIGHT...N winds 20 to 25 kt, diminishing to 10 to 15 kt.
Seas 4 to 7 ft. 

$$

ANZ805-190830-
Georges Bank between Cape Cod and 68W north of 1000 FM-
421 PM EDT Wed Mar 18 2026

.TONIGHT...Variable winds less than 10 kt, becoming E to NE.
Seas 4 to 8 ft. Light freezing spray early. 
.THU...E to NE winds 5 to 15 kt. Seas 3 to 5 ft. 
.THU NIGHT...E to NE winds less than 10 kt, becoming variable.
Seas 3 to 4 ft. 
.FRI...SW winds 5 to 15 kt, becoming S to SW 10 to 20 kt. Seas
3 to 5 ft. 
.FRI NIGHT...S winds 15 to 25 kt. Seas 4 to 6 ft. 
.SAT...S to SW winds 15 to 20 kt, becoming SW 5 to 15 kt. Seas
4 to 6 ft. 
.SAT NIGHT...W to SW winds 5 to 10 kt, becoming variable. Seas
4 to 5 ft. 
.SUN...SE winds 10 to 20 kt, becoming S. Seas 4 to 6 ft. 
.SUN NIGHT...S to SW winds 15 to 25 kt. Seas 5 to 7 ft. 
.MON...N winds 20 to 25 kt. Seas 7 to 9 ft. 
.MON NIGHT...N winds 20 to 25 kt, becoming NE 15 to 20 kt. Seas
5 to 8 ft. 

$$

ANZ900-190830-
Georges Bank between 68W and the Hague Line-
421 PM EDT Wed Mar 18 2026

.TONIGHT...Variable winds less than 5 kt, becoming N to NE,
then, becoming E to NE. Seas 5 to 9 ft. Light freezing spray
early. 
.THU...E to NE winds 5 to 15 kt. Seas 4 to 5 ft. 
.THU NIGHT...N to NE winds 5 to 15 kt. Seas 3 to 5 ft. 
.FRI...N winds less than 10 kt, becoming S to SW 10 to 20 kt.
Seas 3 to 6 ft. 
.FRI NIGHT...S winds 15 to 25 kt. Seas 5 to 6 ft. 
.SAT...S winds 15 to 25 kt, becoming SW 15 to 20 kt. Seas 5 to
6 ft. 
.SAT NIGHT...W winds 5 to 10 kt, becoming variable. Seas 4 to
6 ft. 
.SUN...E to SE winds 5 to 15 kt, becoming S. Seas 4 to 6 ft. 
.SUN NIGHT...S to SW winds 15 to 20 kt. Seas 5 to 7 ft. 
.MON...N winds 20 to 25 kt. Seas 8 to 9 ft. 
.MON NIGHT...N to NE winds 15 to 25 kt. Seas 4 to 8 ft. 

$$

ANZ810-190830-
South of New England between the Great South Channel and Montauk
Point to 1000 FM-
421 PM EDT Wed Mar 18 2026

.TONIGHT...Variable winds less than 10 kt, becoming E. Seas 4 to
7 ft. 
.THU...E to NE winds 5 to 15 kt. Seas 3 to 5 ft. 
.THU NIGHT...E to SE winds 5 to 10 kt, becoming variable. Seas
3 to 4 ft. 
.FRI...W to SW winds less than 10 kt, becoming S to SW. Seas
3 to 4 ft. 
.FRI NIGHT...S winds 15 to 25 kt. Seas 3 to 6 ft. 
.SAT...SW winds 15 to 20 kt, becoming W to SW 10 to 15 kt. Seas
5 to 6 ft. 
.SAT NIGHT...SW winds 5 to 10 kt, becoming variable. Seas 4 to
5 ft. 
.SUN...S winds 5 to 10 kt, increasing to 10 to 20 kt. Seas 4 to
5 ft. 
.SUN NIGHT...S to SW winds 15 to 25 kt. Seas 5 to 7 ft. 
.MON...N to NE winds 15 to 25 kt. Seas 5 to 9 ft. 
.MON NIGHT...NE winds 20 to 25 kt, becoming E 15 to 20 kt. Seas
5 to 8 ft. 

$$

ANZ815-190830-
South of Long Island between Montauk Point and Sandy Hook to
1000 FM-
421 PM EDT Wed Mar 18 2026

.TONIGHT...Variable winds less than 10 kt, becoming E to NE.
Seas 4 to 6 ft. 
.THU...E to NE winds 5 to 10 kt, becoming E to SE. Seas 3 to
5 ft. 
.THU NIGHT...SE winds less than 10 kt, becoming S to SW. Seas
3 to 4 ft. 
.FRI...W winds 5 to 10 kt, becoming S to SW 10 to 20 kt. Seas
3 to 4 ft. 
.FRI NIGHT...S winds 15 to 25 kt, becoming SW. Seas 3 to 6 ft. 
.SAT...SW winds 10 to 20 kt, becoming W 5 to 10 kt. Seas 4 to
6 ft. 
.SAT NIGHT...S to SW winds less than 10 kt. Seas 3 to 5 ft. 
.SUN...S winds 5 to 15 kt, increasing to 15 to 20 kt. Seas 3 to
5 ft. 
.SUN NIGHT...SW winds 15 to 25 kt. Seas 4 to 6 ft. 
.MON...N winds 20 to 25 kt, becoming NE 15 to 25 kt. Seas 5 to
9 ft. 
.MON NIGHT...E to NE winds 15 to 25 kt. Seas 4 to 8 ft. 

$$

.Forecaster Holley. Ocean Prediction Center.