417
FZNT21 KWBC 210253
OFFNT1

Offshore Waters Forecast
NWS Ocean Prediction Center Washington DC
1053 PM EDT Wed Aug 20 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.

ANZ898-220245-
1053 PM EDT Wed Aug 20 2025

.SYNOPSIS FOR NEW ENGLAND WATERS...High pressure over the N
waters will gradually shift NE of the area later tonight. The
center of Hurricane Erin is expected to track NE through the
outer Mid-Atlantic Waters Thu into Fri, remaining S and then SE
of the waters. Erin will then move farther away from the area
over the N Atlantic Fri night into Sat. Long period S swell from
Hurricane Erin will continue through Thu night before backing to
the SE and E Fri night. A high pressure ridge will move E across
the waters Fri night and Sat, then shift E of the area Sat night
into Sun. A cold front will gradually approach the waters from
the W late Sun night, then move E across the area Mon and Mon
night. For more information on Hurricane Erin, please closely
monitor the latest forecasts from the National Hurricane Center.

$$

ANZ800-220245-
Gulf of Maine to the Hague Line-
1053 PM EDT Wed Aug 20 2025

.TONIGHT...SE winds 5 to 10 kt, becoming E to SE 5 to 15 kt.
Seas 4 to 7 ft. Chance of showers.
.THU...E winds 10 to 20 kt. Seas 6 to 10 ft. Chance of showers.
.THU NIGHT...NE winds 20 to 30 kt. Seas 9 to 16 ft.
.FRI...N to NE winds 20 to 30 kt. Seas 11 to 19 ft.
.FRI NIGHT...N winds 10 to 20 kt, becoming SW. Seas 10 to 16 ft.
.SAT...S to SW winds 10 to 20 kt. Seas 6 to 11 ft.
.SAT NIGHT...S winds 10 to 20 kt. Seas 5 to 9 ft.
.SUN...S winds 10 to 15 kt, becoming 10 to 20 kt. Seas 4 to
8 ft.
.SUN NIGHT...S winds 10 to 20 kt, becoming 10 to 15 kt. Seas
4 to 6 ft.
.MON...S winds 10 to 15 kt. Seas 3 to 4 ft.
.MON NIGHT...S winds 5 to 15 kt, becoming SW 5 to 10 kt. Seas
3 to 5 ft.

$$

ANZ805-220245-
Georges Bank between Cape Cod and 68W north of 1000 FM-
1053 PM EDT Wed Aug 20 2025

...TROPICAL STORM WARNING...

.TONIGHT...E winds 15 to 25 kt. Seas 7 to 12 ft. Chance of
showers and tstms.
.THU...E winds 20 to 30 kt. Seas 10 to 19 ft. Chance of showers
and tstms.
.THU NIGHT...NE winds 35 to 45 kt. Seas 14 to 29 ft. Chance of
showers and scattered tstms.
.FRI...N winds 30 to 40 kt, diminishing to 20 to 30 kt. Seas
14 to 29 ft. Chance of showers and scattered tstms.
.FRI NIGHT...N winds 15 to 25 kt, becoming W. Seas 12 to 20 ft.
.SAT...SW winds 10 to 20 kt, becoming S. Seas 7 to 13 ft.
.SAT NIGHT...S to SE winds 5 to 15 kt. Seas 6 to 9 ft.
.SUN...S winds 5 to 15 kt. Seas 5 to 8 ft.
.SUN NIGHT...S winds 10 to 15 kt. Seas 4 to 7 ft.
.MON...S to SE winds 5 to 15 kt. Seas 3 to 6 ft.
.MON NIGHT...S winds 5 to 15 kt, becoming W to SW 10 to 15 kt.
Seas 3 to 5 ft.

$$

ANZ900-220245-
Georges Bank between 68W and the Hague Line-
1053 PM EDT Wed Aug 20 2025

...TROPICAL STORM WARNING...

.TONIGHT...E winds 15 to 25 kt. Seas 6 to 11 ft.
.THU...E winds 20 to 30 kt. Seas 10 to 17 ft. Chance of showers
and tstms.
.THU NIGHT...E to NE winds 35 to 45 kt. Seas 14 to 29 ft. Rain.
.FRI...N to NE winds 35 to 50 kt, becoming N 30 to 40 kt. Seas
16 to 31 ft. Scattered showers and tstms.
.FRI NIGHT...N winds 20 to 30 kt, diminishing to 5 to 15 kt.
Seas 14 to 23 ft.
.SAT...Variable winds less than 10 kt, becoming N to NE. Seas
8 to 14 ft.
.SAT NIGHT...S to SE winds 5 to 10 kt. Seas 6 to 10 ft.
.SUN...S to SE winds 5 to 10 kt, increasing to 10 to 15 kt. Seas
5 to 9 ft.
.SUN NIGHT...S to SE winds 5 to 15 kt. Seas 5 to 7 ft.
.MON...S to SE winds 10 to 15 kt. Seas 4 to 6 ft.
.MON NIGHT...SW winds 10 to 20 kt, becoming W 5 to 10 kt. Seas
3 to 6 ft.

$$

ANZ810-220245-
South of New England between the Great South Channel and Montauk
Point to 1000 FM-
1053 PM EDT Wed Aug 20 2025

...TROPICAL STORM WARNING...

.TONIGHT...E winds 20 to 25 kt. Seas 8 to 14 ft. Chance of
showers and tstms.
.THU...E winds 20 to 30 kt, becoming NE 25 to 30 kt. Seas 11 to
21 ft. Chance of showers and tstms.
.THU NIGHT...N to NE winds 30 to 40 kt. Seas 14 to 28 ft. Chance
of showers and tstms.
.FRI...N winds 30 to 35 kt, diminishing to 20 to 30 kt. Seas
13 to 27 ft. Chance of showers and scattered tstms.
.FRI NIGHT...N winds 20 to 30 kt, becoming W to SW 15 to 25 kt.
Seas 11 to 18 ft.
.SAT...SW winds 10 to 20 kt, becoming S to SE. Seas 7 to 12 ft.
.SAT NIGHT...S to SE winds 5 to 15 kt. Seas 5 to 9 ft.
.SUN...S winds 5 to 10 kt, becoming 5 to 15 kt. Seas 4 to 8 ft.
.SUN NIGHT...S to SE winds 5 to 15 kt. Seas 5 to 7 ft.
.MON...SE winds 10 to 15 kt, becoming S 5 to 15 kt. Seas 4 to
6 ft.
.MON NIGHT...W winds 5 to 15 kt. Seas 3 to 5 ft.

$$

ANZ815-220245-
South of Long Island between Montauk Point and Sandy Hook to
1000 FM-
1053 PM EDT Wed Aug 20 2025

...TROPICAL STORM WARNING...

.TONIGHT...E winds 15 to 25 kt. Seas 9 to 15 ft. Scattered
showers and chance of tstms.
.THU...NE winds 20 to 30 kt, becoming 25 to 35 kt. Seas 12 to
23 ft. Chance of showers and tstms.
.THU NIGHT...NE winds 25 to 35 kt, becoming N. Seas 15 to 25 ft.
Chance of showers and chance of tstms.
.FRI...N winds 20 to 30 kt. Seas 12 to 21 ft. Chance of showers.
.FRI NIGHT...NE winds 10 to 20 kt, becoming SW 5 to 15 kt. Seas
9 to 15 ft.
.SAT...S to SW winds 5 to 15 kt. Seas 6 to 10 ft.
.SAT NIGHT...S winds 5 to 15 kt. Seas 5 to 8 ft.
.SUN...S winds 10 to 15 kt. Seas 4 to 7 ft.
.SUN NIGHT...S winds 10 to 15 kt, diminishing to 5 to 10 kt.
Seas 4 to 7 ft.
.MON...S to SE winds 5 to 10 kt, becoming S to SW. Seas 3 to
6 ft.
.MON NIGHT...SW winds 10 to 15 kt, becoming W. Seas 4 to 5 ft.

$$

.Forecaster Mills. Ocean Prediction Center.