National Weather Service Marine Forecast FZNT21 KWBC
FZNT21 KWBC 162020
OFFNT1
Offshore Waters Forecast
NWS Ocean Prediction Center Washington DC
420 PM EDT Wed Sep 16 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.
ANZ898-170815
420 PM EDT Wed Sep 16 2026
SYNOPSIS FOR NEW ENGLAND WATERS
High pressure will continue
across the waters tonight into Thu, then shift E of the region
Thu night. A stationary front will persist SE of the area tonight
into Fri while a series of weak low pressure centers track NE
along the boundary. A low pressure trough will persist along the
Maine coast tonight into Thu. A strong cold front will move S
over the region Fri. Another high will build SE across the region
Fri night into Sat, then shift E of the waters Sat night. A warm
front will lift N through the area Sun and Sun night, before low
pressure moves SE through the waters Sun night and Mon while
pulling a cold front over the area. Yet another high will build
SE towards the region Mon night.
ANZ800-170815
Gulf of Maine to the Hague Line
420 PM EDT Wed Sep 16 2026
TONIGHT
SW winds 5 to 15 kt, becoming 5 to 10 kt. Seas 3 to
4 ft.
THU
S to SW winds 5 to 10 kt, becoming S 5 to 15 kt. Seas
3 to 4 ft.
THU NIGHT
S winds 10 to 15 kt, becoming SW 15 to 20 kt. Seas
3 to 4 ft. Chance of showers.
FRI
W to NW winds 10 to 15 kt. Seas 3 to 4 ft. Chance of
rain.
FRI NIGHT
N winds 15 to 25 kt. Seas 3 to 6 ft.
SAT
N winds 10 to 20 kt, diminishing to less than 10 kt. Seas
3 to 5 ft.
SAT NIGHT
Variable winds less than 5 kt, becoming S to SE.
Seas 3 ft, becoming 2 ft or less.
SUN
S to SE winds 5 to 10 kt. Seas 3 to 4 ft.
SUN NIGHT
S winds 5 to 15 kt, becoming NE. Seas 3 to 4 ft.
MON
NE winds 10 to 15 kt. Seas 3 to 5 ft.
MON NIGHT
NE winds 10 to 15 kt, increasing to 15 to 20 kt.
Seas 3 to 4 ft.
ANZ805-170815
Georges Bank between Cape Cod and 68W north of 1000 FM
420 PM EDT Wed Sep 16 2026
TONIGHT
Variable winds less than 10 kt, becoming SW. Seas
3 to 4 ft.
THU
S winds less than 10 kt, increasing to 5 to 15 kt. Seas
3 to 4 ft.
THU NIGHT
S winds 5 to 15 kt, becoming SW 10 to 20 kt. Seas
3 to 4 ft. Chance of showers.
FRI
W to SW winds 10 to 20 kt, becoming W to NW. Seas 3 to
4 ft.
FRI NIGHT
N winds 10 to 20 kt. Seas 3 to 6 ft.
SAT
NE winds 10 to 20 kt, diminishing to 5 to 15 kt. Seas
3 to 6 ft.
SAT NIGHT
E to NE winds 5 to 15 kt, becoming E 5 to 10 kt.
Seas 3 to 5 ft.
SUN
SE winds 5 to 10 kt. Seas 3 to 4 ft.
SUN NIGHT
S to SE winds 5 to 10 kt. Seas 3 to 4 ft.
MON
E to NE winds 5 to 15 kt. Seas 4 to 5 ft.
MON NIGHT
NE winds 10 to 20 kt. Seas 4 to 5 ft.
ANZ900-170815
Georges Bank between 68W and the Hague Line
420 PM EDT Wed Sep 16 2026
TONIGHT
Variable winds less than 10 kt. Seas 3 to 4 ft.
THU
Variable winds less than 10 kt, becoming S to SW. Seas
3 to 4 ft.
THU NIGHT
S to SW winds 5 to 15 kt. Seas 3 to 4 ft. Chance of
showers.
FRI
W to SW winds 15 to 20 kt, becoming W to NW 10 to 20 kt.
Seas 3 to 4 ft. Chance of rain.
FRI NIGHT
N winds 10 to 20 kt. Seas 4 to 6 ft.
SAT
N to NE winds 15 to 20 kt, becoming N 5 to 15 kt. Seas
3 to 6 ft.
SAT NIGHT
NE winds 5 to 15 kt, becoming E 5 to 10 kt. Seas
3 to 5 ft.
SUN
SE winds 5 to 10 kt, becoming variable. Seas 3 to 4 ft.
SUN NIGHT
E to SE winds less than 10 kt, becoming variable.
Seas 3 to 4 ft.
MON
NE winds 5 to 15 kt. Seas 3 to 5 ft.
MON NIGHT
NE winds 15 to 20 kt. Seas 4 to 5 ft.
ANZ810-170815
South of New England between the Great South Channel and Montauk
Point to 1000 FM
420 PM EDT Wed Sep 16 2026
TONIGHT
Variable winds less than 5 kt. Seas 3 to 4 ft.
THU
S to SW winds less than 10 kt. Seas 3 to 4 ft.
THU NIGHT
S to SW winds 5 to 15 kt, becoming SW 10 to 20 kt.
Seas 3 to 4 ft.
FRI
W winds 10 to 20 kt, becoming N to NW 10 to 15 kt. Seas
3 to 4 ft.
FRI NIGHT
NE winds 10 to 15 kt, increasing to 15 to 20 kt.
Seas 3 to 5 ft.
SAT
NE winds 15 to 20 kt, diminishing to 10 to 15 kt. Seas
4 to 5 ft.
SAT NIGHT
E to NE winds 10 to 15 kt, becoming E 5 to 10 kt.
Seas 3 to 5 ft.
SUN
SE winds 5 to 10 kt, becoming S to SE 5 to 15 kt. Seas
3 to 4 ft.
SUN NIGHT
S to SE winds 5 to 15 kt, becoming S to SW. Seas
3 to 5 ft.
MON
E to NE winds 10 to 20 kt. Seas 4 to 6 ft.
MON NIGHT
NE winds 15 to 25 kt. Seas 5 to 6 ft.
ANZ815-170815
South of Long Island between Montauk Point and Sandy Hook to
1000 FM
420 PM EDT Wed Sep 16 2026
TONIGHT
W winds less than 5 kt, becoming SW. Seas 3 to 4 ft.
THU
SW winds 5 to 10 kt. Seas 3 to 4 ft.
THU NIGHT
S to SW winds 10 to 15 kt, becoming SW 15 to 20 kt.
Seas 3 to 4 ft.
FRI
W winds 10 to 15 kt, becoming N. Seas 3 to 4 ft.
FRI NIGHT
NE winds 10 to 15 kt, increasing to 15 to 20 kt.
Seas 3 to 5 ft.
SAT
NE winds 15 to 20 kt, becoming E 10 to 15 kt. Seas 4 to
5 ft.
SAT NIGHT
E winds 5 to 10 kt, becoming SE. Seas 3 to 4 ft.
SUN
S to SE winds 10 to 15 kt. Seas 3 to 4 ft.
SUN NIGHT
S winds 10 to 15 kt, becoming W to SW. Seas 3 to
5 ft.
MON
N winds 10 to 20 kt, becoming NE 15 to 20 kt. Seas 4 to
6 ft.
MON NIGHT
NE winds 15 to 20 kt. Seas 5 to 6 ft.
.Forecaster Kells. Ocean Prediction Center.



