FZNT21 KWBC 202104
OFFNT1

Offshore Waters Forecast
NWS Ocean Prediction Center Washington DC
504 PM EDT Tue Oct 20 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.

ANZ898-210915-
504 PM EDT Tue Oct 20 2026

.SYNOPSIS FOR NEW ENGLAND WATERS...Tonight through Wed night,
the waters will be between the strong low to the S stalling
offshore of the mid-Atlantic coast, and high pressure over the
Great Lakes and SE Canada. The low will begin moving slowly NE
Thu and continue to do so through the weekend, while high
pressure builds over the waters from the W later Thu night
into Sat. The high will then remain over the region Sat night
through Sun night. Mariners should continue to monitor the
latest high seas, offshore, coastal, and tropical forecasts on
the low pressure system, executing avoidance as needed for any
voyages planned especially to the south of the area.

$$

ANZ800-210915-
Gulf of Maine to the Hague Line-
504 PM EDT Tue Oct 20 2026

...GALE FORCE WINDS POSSIBLE THU NIGHT...

.TONIGHT...N winds 20 to 25 kt, becoming NE. Seas 6 to 9 ft.
.WED...NE winds 15 to 25 kt. Seas 6 to 10 ft.
.WED NIGHT...NE winds 15 to 25 kt. Seas 6 to 10 ft. Chance of
rain, then showers.
.THU...NE winds 20 to 30 kt, becoming N 25 to 30 kt. Seas 7 to
11 ft. Rain.
.THU NIGHT...N winds 25 to 35 kt. Seas 9 to 14 ft.
.FRI...N winds 30 to 35 kt, diminishing to 20 to 30 kt. Seas
7 to 13 ft.
.FRI NIGHT...N winds 20 to 30 kt, becoming N to NE 5 to 15 kt.
Seas 6 to 10 ft.
.SAT...NW winds 10 to 15 kt, becoming W. Seas 4 to 7 ft.
.SAT NIGHT...W winds 10 to 15 kt, diminishing to 5 to 10 kt.
Seas 3 to 5 ft.
.SUN...W winds less than 10 kt. Seas 3 to 4 ft.
.SUN NIGHT...SW winds 10 to 15 kt. Seas 3 to 4 ft.

$$

ANZ805-210915-
Georges Bank between Cape Cod and 68W north of 1000 FM-
504 PM EDT Tue Oct 20 2026

...GALE WARNING...

.TONIGHT...NE winds 30 to 40 kt. Seas 9 to 16 ft. Chance of
rain.
.WED...NE winds 30 to 40 kt. Seas 10 to 17 ft. Rain.
.WED NIGHT...NE winds 25 to 35 kt. Seas 10 to 16 ft. Rain.
.THU...NE winds 30 to 40 kt, becoming N 35 to 45 kt. Seas 12 to
20 ft. Rain.
.THU NIGHT...N winds 35 to 45 kt. Seas 12 to 20 ft.
.FRI...N winds 30 to 35 kt, diminishing to 25 to 30 kt. Seas
9 to 16 ft.
.FRI NIGHT...N to NE winds 20 to 30 kt. Seas 7 to 12 ft.
.SAT...N to NE winds 10 to 15 kt, becoming N 5 to 10 kt. Seas
5 to 9 ft.
.SAT NIGHT...W to NW winds 5 to 10 kt. Seas 4 to 7 ft.
.SUN...W to NW winds less than 10 kt. Seas 3 to 6 ft.
.SUN NIGHT...SW winds 5 to 15 kt, becoming W 10 to 15 kt. Seas
3 to 4 ft.

$$

ANZ900-210915-
Georges Bank between 68W and the Hague Line-
504 PM EDT Tue Oct 20 2026

...GALE WARNING...

.TONIGHT...NE winds 30 to 40 kt. Seas 9 to 15 ft. Chance of
rain.
.WED...NE winds 25 to 35 kt. Seas 10 to 15 ft. Chance of rain.
.WED NIGHT...E to NE winds 20 to 30 kt. Seas 9 to 14 ft. Chance
of rain.
.THU...N to NE winds 35 to 45 kt. Seas 9 to 14 ft, building to
12 to 20 ft. Scattered showers and tstms, then rain.
.THU NIGHT...N winds 35 to 45 kt. Seas 12 to 21 ft.
.FRI...N winds 30 to 35 kt, diminishing to 25 to 30 kt. Seas
10 to 17 ft.
.FRI NIGHT...N winds 20 to 30 kt, becoming NE 15 to 25 kt. Seas
7 to 13 ft.
.SAT...N winds 10 to 15 kt, becoming N to NW 5 to 10 kt. Seas
6 to 10 ft.
.SAT NIGHT...W to NW winds 5 to 10 kt. Seas 5 to 9 ft.
.SUN...W to NW winds less than 10 kt. Seas 4 to 7 ft.
.SUN NIGHT...W to SW winds 5 to 10 kt, increasing to 10 to
15 kt. Seas 3 to 5 ft.

$$

ANZ810-210915-
South of New England between the Great South Channel and Montauk
Point to 1000 FM-
504 PM EDT Tue Oct 20 2026

...GALE WARNING...

.TONIGHT...NE winds 35 to 45 kt. Seas 12 to 18 ft. Chance of
rain.
.WED...NE winds 35 to 45 kt. Seas 15 to 19 ft. Chance of rain.
.WED NIGHT...N to NE winds 35 to 45 kt. Seas 13 to 19 ft.
Scattered showers and tstms, then rain.
.THU...N winds 35 to 45 kt. Seas 13 to 20 ft. Rain.
.THU NIGHT...N winds 35 to 45 kt. Seas 11 to 19 ft.
.FRI...N winds 25 to 30 kt. Seas 9 to 15 ft.
.FRI NIGHT...NE winds 15 to 25 kt. Seas 7 to 12 ft.
.SAT...NE winds 10 to 15 kt, diminishing to 5 to 10 kt. Seas
5 to 8 ft.
.SAT NIGHT...Variable winds less than 5 kt, becoming NW. Seas
4 to 7 ft.
.SUN...Variable winds less than 5 kt, becoming W. Seas 4 to
6 ft.
.SUN NIGHT...W winds 5 to 10 kt, increasing to 10 to 15 kt. Seas
3 to 5 ft.

$$

ANZ815-210915-
South of Long Island between Montauk Point and Sandy Hook to
1000 FM-
504 PM EDT Tue Oct 20 2026

...GALE WARNING...

.TONIGHT...NE winds 35 to 45 kt. Seas 13 to 18 ft. Slight chance
of rain.
.WED...NE winds 35 to 45 kt. Seas 16 to 19 ft. Rain.
.WED NIGHT...NE winds 35 to 45 kt, becoming N. Seas 15 to 20 ft.
Rain.
.THU...N winds 35 to 45 kt. Seas 11 to 19 ft. Chance of rain.
.THU NIGHT...N winds 20 to 30 kt. Seas 9 to 14 ft.
.FRI...N to NE winds 20 to 30 kt. Seas 7 to 12 ft.
.FRI NIGHT...NE winds 15 to 25 kt, diminishing to 10 to 15 kt.
Seas 6 to 9 ft.
.SAT...NE winds 10 to 15 kt, diminishing to 5 to 10 kt. Seas
5 to 7 ft.
.SAT NIGHT...Variable winds less than 5 kt, becoming NW. Seas
4 to 6 ft.
.SUN...W to NW winds less than 10 kt. Seas 4 to 5 ft.
.SUN NIGHT...W winds 5 to 10 kt, increasing to 10 to 15 kt. Seas
3 to 4 ft.

$$

.Forecaster Holley. Ocean Prediction Center.