Offshore Waters Forecast (New England)

FZNT21 KWBC 172020
OFFNT1

Offshore Waters Forecast
NWS Ocean Prediction Center Washington DC
420 PM EDT Mon Aug 17 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.

ANZ898-180800-
420 PM EDT Mon Aug 17 2026

.SYNOPSIS FOR NEW ENGLAND WATERS...Low pressure will track E
across the S waters tonight, and turn NE and cross the far outer
waters Tue, before clearing NE of the waters by Tue night. Weak
high pressure will build E into the area Wed, and slide off to
the E Wed night as a weak cold front moves off the coast. The
front will drift SE into the waters Thu, and then stall across
the area Thu night into Fri, as weak low pressure forms along
the front. The low will clear NE of the area Fri night with a
trailing cold front pushing SE over the southern and eastern
waters. High pressure will build E over the area Sat as the
front stalls to the S of the waters. The high will pass NE of
the waters Sat night as the front to the S lifts N toward the
region as a warm front. 

$$

ANZ800-180800-
Gulf of Maine to the Hague Line-
420 PM EDT Mon Aug 17 2026

.TONIGHT...S to SE winds 5 to 15 kt, becoming E to SE 10 to
20 kt. Seas 3 to 5 ft. Chance of tstms early, otherwise showers
likely with vsby 1 nm or less. Patchy fog. 
.TUE...Winds becoming E 10 to 15 kt, then NE. Seas 4 to 7 ft.
Chance of showers with vsby 1 nm or less. 
.TUE NIGHT...N to NW winds 5 to 15 kt. Seas 4 to 7 ft. Areas of 
fog with vsby 1 nm or less. 
.WED...Variable winds less than 10 kt, becoming S to SW. Seas 3
to 5 ft. Areas of fog with vsby 1 nm or less. 
.WED NIGHT...S to SW winds 10 to 15 kt, becoming SW 5 to 10 kt.
Seas 3 to 4 ft. 
.THU...N winds 5 to 15 kt, becoming E to NE. Seas 3 to 4 ft. 
.THU NIGHT...Variable winds 5 to 10 kt. Seas 3 to 4 ft.
.FRI...NE winds 5 to 10 kt, becoming N to NE 10 to 20 kt. Seas
3 to 5 ft. 
.FRI NIGHT...N to NE winds 5 to 15 kt, becoming N 5 to 10 kt.
Seas 3 to 5 ft. 
.SAT...NE winds 5 to 10 kt, becoming E. Seas 3 to 4 ft. 
.SAT NIGHT...E to SE winds 5 to 10 kt. Seas 3 to 4 ft. 

$$

ANZ805-180800-
Georges Bank between Cape Cod and 68W north of 1000 FM-
420 PM EDT Mon Aug 17 2026

.TONIGHT...S to SE winds 15 to 25 kt. Seas 4 to 8 ft. Chance of
tstms early, otherwise showers likely with vsby 1 nm or less. 
.TUE...E to SE winds 5 to 15 kt, becoming NW 5 to 10 kt. Seas
4 to 7 ft. Chance of showers with vsby 1 nm or less. 
.TUE NIGHT...NW winds 5 to 10 kt. Seas 3 to 6 ft. Areas of fog
with vsby 1 nm or less. 
.WED...Variable winds 5 to 10 kt, becoming SW. Seas 3 to 4 ft.
Areas of fog with vsby 1 nm or less. 
.WED NIGHT...SW winds 5 to 10 kt. Seas 3 to 4 ft. 
.THU...S to SW winds 5 to 10 kt. Seas 3 to 4 ft. 
.THU NIGHT...S to SW winds 5 to 10 kt. Seas 3 to 4 ft. 
.FRI...S winds 5 to 10 kt, becoming N 10 to 20 kt. Seas 3 to
4 ft. 
.FRI NIGHT...NE winds 5 to 15 kt. Seas 3 to 5 ft.
.SAT...E to NE winds 5 to 15 kt. Seas 3 to 5 ft. 
.SAT NIGHT...E winds 5 to 10 kt. Seas 3 to 5 ft. 

$$

ANZ900-180800-
Georges Bank between 68W and the Hague Line-
420 PM EDT Mon Aug 17 2026

.TONIGHT...S to SE winds 20 to 30 kt. Seas 6 to 10 ft. Chance of
tstms early, otherwise showers with vsby 1 nm or less. Patchy 
fog.
.TUE...SE winds 15 to 25 kt, becoming S to SW 10 to 20 kt. Seas
5 to 9 ft. Chance of showers with vsby 1 nm or less. 
.TUE NIGHT...W winds 5 to 15 kt, becoming W to NW 5 to 10 kt. 
Seas 4 to 7 ft. Areas of fog with vsby 1 nm or less. 
.WED...W to NW winds 5 to 10 kt, becoming W to SW. Seas 3 to 5
ft. Areas of fog with vsby 1 nm or less. 
.WED NIGHT...SW winds 5 to 10 kt. Seas 3 to 4 ft. 
.THU...S to SW winds 5 to 10 kt. Seas 3 to 4 ft. 
.THU NIGHT...S to SW winds 5 to 10 kt. Seas 3 to 4 ft. 
.FRI...S winds less than 10 kt, becoming variable. Seas 3 to
4 ft. 
.FRI NIGHT...N to NE winds 5 to 15 kt. Seas 3 to 5 ft. 
.SAT...NE winds 5 to 10 kt, becoming E to NE 5 to 15 kt. Seas
3 to 5 ft. 
.SAT NIGHT...E to SE winds less than 10 kt. Seas 3 to 5 ft. 

$$

ANZ810-180800-
South of New England between the Great South Channel and Montauk
Point to 1000 FM-
420 PM EDT Mon Aug 17 2026

.TONIGHT...S winds 10 to 20 kt, becoming W 5 to 15 kt. Seas 4 to
7 ft. Scattered showers and chance of tstms. 
.TUE...N to NW winds 5 to 10 kt. Seas 4 to 7 ft. 
.TUE NIGHT...NW winds less than 10 kt, becoming variable. Seas
3 to 4 ft. 
.WED...S to SW winds less than 10 kt. Seas 3 to 4 ft. 
.WED NIGHT...SW winds 5 to 10 kt. Seas 3 to 4 ft. 
.THU...S to SW winds 5 to 10 kt. Seas 3 to 4 ft. 
.THU NIGHT...S winds 5 to 10 kt. Seas 3 to 4 ft. 
.FRI...S winds 5 to 10 kt, becoming N. Seas 3 to 4 ft. 
.FRI NIGHT...NE winds 5 to 15 kt. Seas 4 to 5 ft.
.SAT...E winds 10 to 15 kt. Seas 4 to 5 ft. 
.SAT NIGHT...E winds 5 to 10 kt. Seas 4 to 5 ft. 

$$

ANZ815-180800-
South of Long Island between Montauk Point and Sandy Hook to
1000 FM-
420 PM EDT Mon Aug 17 2026

.TONIGHT...W winds 5 to 10 kt, becoming N to NW 5 to 15 kt. Seas
3 to 6 ft. Chance of showers or a tstm early. 
.TUE...N winds less than 10 kt. Seas 3 to 4 ft. 
.TUE NIGHT...Variable winds less than 10 kt, becoming W to SW.
Seas 3 to 4 ft. 
.WED...SW winds 5 to 10 kt. Seas 3 to 4 ft. 
.WED NIGHT...S to SW winds 5 to 10 kt. Seas 3 to 4 ft. 
.THU...SW winds 5 to 10 kt, becoming S. Seas 3 to 4 ft. 
.THU NIGHT...S winds 5 to 10 kt. Seas 2 to 4 ft. 
.FRI...S to SW winds 5 to 10 kt, becoming N to NW. Seas 3 to
4 ft. 
.FRI NIGHT...E to NE winds 10 to 15 kt. Seas 3 to 5 ft. 
.SAT...E winds 10 to 15 kt. Seas 4 to 6 ft. 
.SAT NIGHT...E to NE winds 5 to 10 kt. Seas 4 to 5 ft. 

$$

.Forecaster Mills. Ocean Prediction Center.