050
FZNT21 KWBC 202118
OFFNT1

Offshore Waters Forecast
NWS Ocean Prediction Center Washington DC
518 PM EDT Sun Sep 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.

ANZ898-210930-
518 PM EDT Sun Sep 20 2026

.SYNOPSIS FOR NEW ENGLAND WATERS...A warm front will lift N into
the far S waters later today into tonight, before low pressure
moves E across the far S waters later tonight and Mon while
pulling a cold front over the area. The cold front will stall S
of the area Mon night through Tue night as low pressure develops
along and S of the stalled front, then lifts slowly N towards the
waters Wed and Wed night. Strong high pressure will build N of
the region Tue and Tue night, then continue Wed into Thu night.
The low will strengthen just S of the region Thu and Thu night,
then move into the N waters Fri and Fri night. Widespread strong
gale force winds, with storm force wind gusts, and building seas
are likely over most of the waters beginning Tue and continuing
through Fri night. Mariners should consider avoidance plans as
this significant weather system likely impacts most of the region
Tue through Thu night. Please monitor the latest OPC and coastal
marine forecasts.

$$

ANZ800-210930-
Gulf of Maine to the Hague Line-
518 PM EDT Sun Sep 20 2026

...GALE FORCE WINDS POSSIBLE FRI NIGHT...

.TONIGHT...SE winds 5 to 10 kt, becoming 5 to 15 kt, then,
becoming variable. Seas 3 to 4 ft. Showers.
.MON...NE winds 10 to 20 kt, becoming N. Seas 3 to 5 ft. Chance
of showers.
.MON NIGHT...NE winds 15 to 25 kt. Seas 3 to 6 ft.
.TUE...NE winds 15 to 20 kt. Seas 4 to 5 ft.
.TUE NIGHT...NE winds 15 to 25 kt. Seas 4 to 7 ft.
.WED...NE winds 15 to 25 kt. Seas 6 to 10 ft.
.WED NIGHT...E to NE winds 15 to 25 kt. Seas 6 to 10 ft.
.THU...E winds 15 to 25 kt, becoming NE. Seas 6 to 11 ft.
.THU NIGHT...NE winds 20 to 30 kt. Seas 6 to 11 ft.
.FRI...NE winds 20 to 30 kt. Seas 8 to 14 ft.
.FRI NIGHT...NE winds 25 to 35 kt. Seas 11 to 16 ft.

$$

ANZ805-210930-
Georges Bank between Cape Cod and 68W north of 1000 FM-
518 PM EDT Sun Sep 20 2026

...GALE WARNING...

.TONIGHT...S to SE winds less than 10 kt. Seas 3 to 4 ft.
Showers.
.MON...NE winds 15 to 25 kt. Seas 3 to 6 ft. Scattered showers.
.MON NIGHT...NE winds 15 to 25 kt. Seas 4 to 7 ft. Chance of
showers.
.TUE...NE winds 20 to 30 kt, increasing to 25 to 35 kt. Seas
6 to 11 ft.
.TUE NIGHT...E to NE winds 25 to 35 kt. Seas 7 to 12 ft.
.WED...NE winds 25 to 30 kt, becoming 25 to 35 kt. Seas 9 to
15 ft.
.WED NIGHT...E to NE winds 25 to 35 kt. Seas 10 to 17 ft.
.THU...NE winds 25 to 35 kt. Seas 10 to 18 ft.
.THU NIGHT...E to NE winds 35 to 45 kt. Seas 13 to 23 ft.
.FRI...E to NE winds 30 to 40 kt. Seas 13 to 22 ft.
.FRI NIGHT...E to NE winds 25 to 35 kt, becoming E to SE 20 to
30 kt. Seas 12 to 16 ft.

$$

ANZ900-210930-
Georges Bank between 68W and the Hague Line-
518 PM EDT Sun Sep 20 2026

...GALE FORCE WINDS POSSIBLE TUE NIGHT...

.TONIGHT...S to SE winds 5 to 15 kt, becoming SE. Seas 3 to
4 ft. Showers.
.MON...N to NE winds 10 to 20 kt. Seas 3 to 5 ft. Rain. Chance
of showers.
.MON NIGHT...NE winds 15 to 25 kt. Seas 4 to 7 ft.
.TUE...NE winds 20 to 30 kt. Seas 6 to 10 ft.
.TUE NIGHT...E to NE winds 25 to 35 kt, becoming NE 20 to 30 kt.
Seas 7 to 12 ft.
.WED...NE winds 25 to 30 kt, becoming 25 to 35 kt. Seas 9 to
15 ft.
.WED NIGHT...E to NE winds 25 to 35 kt. Seas 10 to 17 ft.
.THU...E to NE winds 25 to 35 kt. Seas 10 to 18 ft.
.THU NIGHT...E to NE winds 30 to 40 kt. Seas 12 to 21 ft.
.FRI...E to NE winds 30 to 40 kt. Seas 12 to 21 ft.
.FRI NIGHT...E to NE winds 25 to 35 kt, becoming E 20 to 30 kt.
Seas 12 to 16 ft.

$$

ANZ810-210930-
South of New England between the Great South Channel and Montauk
Point to 1000 FM-
518 PM EDT Sun Sep 20 2026

...GALE WARNING...

.TONIGHT...S winds 5 to 15 kt, becoming W to SW. Seas 3 to 4 ft.
Showers. Slight chance of tstms.
.MON...N to NE winds 15 to 25 kt. Seas 3 to 6 ft. Scattered
showers.
.MON NIGHT...NE winds 20 to 25 kt. Seas 6 to 8 ft. Chance of
showers.
.TUE...NE winds 25 to 30 kt, increasing to 30 to 35 kt. Seas
7 to 11 ft. Rain.
.TUE NIGHT...E to NE winds 30 to 35 kt, becoming NE 25 to 30 kt.
Seas 10 to 12 ft.
.WED...NE winds 25 to 30 kt, increasing to 30 to 35 kt. Seas
12 to 15 ft.
.WED NIGHT...NE winds 30 to 35 kt. Seas 14 to 17 ft.
.THU...NE winds 35 to 40 kt. Seas 15 to 18 ft.
.THU NIGHT...NE winds 35 to 45 kt. Seas 17 to 23 ft.
.FRI...E to NE winds 35 to 45 kt. Seas 19 to 24 ft.
.FRI NIGHT...E to NE winds 25 to 35 kt, becoming SE 25 to 30 kt.
Seas 14 to 22 ft.

$$

ANZ815-210930-
South of Long Island between Montauk Point and Sandy Hook to
1000 FM-
518 PM EDT Sun Sep 20 2026

...GALE WARNING...

.TONIGHT...S winds 10 to 15 kt, becoming W to SW. Seas 3 to
4 ft. Showers. Slight chance of tstms.
.MON...N to NE winds 15 to 25 kt. Seas 4 to 7 ft. Chance of
showers.
.MON NIGHT...E to NE winds 20 to 25 kt. Seas 6 to 8 ft. Chance
of showers.
.TUE...NE winds 25 to 30 kt, increasing to 30 to 35 kt. Seas
7 to 11 ft. Rain.
.TUE NIGHT...NE winds 30 to 35 kt. Seas 10 to 12 ft.
.WED...NE winds 30 to 35 kt. Seas 12 to 15 ft.
.WED NIGHT...NE winds 30 to 35 kt. Seas 14 to 17 ft.
.THU...NE winds 30 to 35 kt. Seas 15 to 19 ft.
.THU NIGHT...NE winds 35 to 45 kt. Seas 17 to 22 ft.
.FRI...NE winds 35 to 45 kt. Seas 20 to 25 ft.
.FRI NIGHT...N to NE winds 30 to 40 kt. Seas 17 to 25 ft.

$$

.Forecaster Holley. Ocean Prediction Center.