National Weather Service Marine Forecast FZNT21 KWBC

FZNT21 KWBC 270840
OFFNT1

Offshore Waters Forecast
NWS Ocean Prediction Center Washington DC
440 AM EDT Thu Aug 27 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.

ANZ898-272000
440 AM EDT Thu Aug 27 2026

SYNOPSIS FOR NEW ENGLAND WATERS
High pressure will slowly slide E of the area today into Fri. A weak trough will quickly move NE across the waters tonight and Fri. A cold front will reach the coast Fri night, then move E across the waters late Fri night through Sat night. High pressure will build across the area behind the front Sat night and Sun, before another cold front approaches from the NW Sun night. The front will move S through the waters late Sun night into Mon night.

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ANZ800-272000
Gulf of Maine to the Hague Line
440 AM EDT Thu Aug 27 2026

TODAY
S winds 5 to 10 kt, increasing to 10 to 15 kt. Seas 3 to 4 ft.

TONIGHT
S winds 10 to 15 kt. Seas 3 to 4 ft. Scattered tstms with vsby 1 nm or less.

FRI
S winds 10 to 15 kt, becoming S to SW 5 to 10 kt. Seas 3 to 4 ft. Scattered showers and tstms with vsby 1 nm or less.

FRI NIGHT
SW winds 5 to 10 kt, becoming N 5 to 15 kt. Seas 3 to 4 ft. Scattered showers and scattered tstms with vsby 1 nm or less.

SAT
N winds 5 to 15 kt, diminishing to less than 10 kt. Seas 3 to 4 ft.

SAT NIGHT
W to SW winds less than 10 kt. Seas 3 to 4 ft.

SUN
SW winds 5 to 15 kt. Seas 3 to 4 ft.

SUN NIGHT
SW winds 15 to 20 kt, becoming W to NW 10 to 20 kt. Seas 3 to 5 ft.

MON
N winds less than 10 kt. Seas 3 to 4 ft.

MON NIGHT
Variable winds less than 5 kt, becoming E to SE. Seas 3 to 4 ft.

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ANZ805-272000
Georges Bank between Cape Cod and 68W north of 1000 FM
440 AM EDT Thu Aug 27 2026

TODAY
SW winds less than 10 kt, becoming S, then, increasing to 5 to 15 kt. Seas 3 to 4 ft.

TONIGHT
S winds 10 to 15 kt, becoming 10 to 20 kt. Seas 3 to 5 ft. Scattered showers and tstms.

FRI
S to SW winds 5 to 15 kt. Seas 3 to 5 ft. Scattered showers and tstms with vsby 1 nm or less.

FRI NIGHT
SW winds 5 to 10 kt, becoming W. Seas 3 to 5 ft. Scattered showers and tstms with vsby 1 nm or less.

SAT
N winds 5 to 15 kt, becoming 5 to 10 kt. Seas 3 to 4 ft.

SAT NIGHT
Variable winds less than 10 kt. Seas 3 to 4 ft.

SUN
Variable winds less than 10 kt, becoming SW. Seas 3 to 4 ft.

SUN NIGHT
SW winds 10 to 20 kt, becoming W. Seas 3 to 5 ft.

MON
W to NW winds 5 to 15 kt, becoming variable 5 to 10 kt. Seas 3 to 4 ft.

MON NIGHT
Variable winds less than 5 kt, becoming W. Seas 3 to 4 ft.

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ANZ900-272000
Georges Bank between 68W and the Hague Line
440 AM EDT Thu Aug 27 2026

TODAY
S to SW winds less than 10 kt. Seas 3 to 4 ft. Areas of fog with vsby 1 nm or less.

TONIGHT
S winds 5 to 15 kt. Seas 3 to 5 ft. Scattered showers and tstms with vsby 1 nm or less.

FRI
S winds 5 to 15 kt, becoming SW. Seas 3 to 5 ft. Scattered showers and tstms with vsby 1 nm or less.

FRI NIGHT
W to SW winds 5 to 10 kt. Seas 3 to 5 ft. Scattered showers and tstms with vsby 1 nm or less.

SAT
Variable winds 5 to 10 kt, becoming N. Seas 3 to 4 ft.

SAT NIGHT
Variable winds less than 5 kt, becoming N to NW. Seas 3 to 4 ft.

SUN
Variable winds less than 10 kt, becoming SW. Seas 3 to 4 ft.

SUN NIGHT
SW winds 10 to 20 kt, becoming W. Seas 3 to 5 ft.

MON
W winds 5 to 15 kt, becoming 5 to 10 kt. Seas 3 to 4 ft.

MON NIGHT
Variable winds less than 5 kt. Seas 3 to 4 ft.

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ANZ810-272000
South of New England between the Great South Channel and Montauk Point to 1000 FM
440 AM EDT Thu Aug 27 2026

TODAY
S to SW winds 5 to 10 kt, becoming S 10 to 15 kt. Seas 3 to 4 ft. Scattered tstms.

TONIGHT
S to SW winds 10 to 20 kt. Seas 4 to 5 ft. Scattered showers and tstms.

FRI
SW winds 5 to 15 kt. Seas 3 to 5 ft. Scattered showers and tstms.

FRI NIGHT
W to SW winds 5 to 10 kt, becoming N to NW. Seas 3 to 4 ft. Scattered showers and tstms.

SAT
N to NE winds less than 10 kt. Seas 3 to 4 ft.

SAT NIGHT
NE winds less than 5 kt, becoming variable. Seas 3 to 4 ft.

SUN
Variable winds less than 5 kt, becoming SW. Seas 3 to 4 ft.

SUN NIGHT
W to SW winds 10 to 15 kt. Seas 3 to 4 ft.

MON
W winds 10 to 15 kt, diminishing to 5 to 10 kt. Seas 3 to 4 ft.

MON NIGHT
SW winds 5 to 10 kt, becoming W. Seas 3 to 4 ft.

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ANZ815-272000
South of Long Island between Montauk Point and Sandy Hook to 1000 FM
440 AM EDT Thu Aug 27 2026

TODAY
SW winds 5 to 10 kt, becoming S 5 to 15 kt, then, increasing to 10 to 20 kt. Seas 3 to 4 ft. Scattered showers and tstms.

TONIGHT
S winds 10 to 20 kt, becoming SW 5 to 15 kt. Seas 4 to 5 ft. Scattered showers and tstms.

FRI
S to SW winds 5 to 10 kt. Seas 3 to 4 ft. Scattered showers and tstms.

FRI NIGHT
Variable winds less than 5 kt, becoming N to NW. Seas 3 to 4 ft. Scattered showers and tstms.

SAT
NE winds 5 to 10 kt. Seas 3 to 4 ft.

SAT NIGHT
E to NE winds 5 to 10 kt, becoming variable. Seas 3 to 4 ft.

SUN
Variable winds less than 5 kt, becoming SW. Seas 3 to 4 ft.

SUN NIGHT
W to SW winds 10 to 15 kt. Seas 3 to 4 ft.

MON
W winds 5 to 10 kt, becoming SW. Seas 3 to 4 ft.

MON NIGHT
SW winds 5 to 10 kt, becoming W. Seas 3 to 4 ft.

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.Forecaster Joseph. Ocean Prediction Center.