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National Weather Service Marine Forecast FZNT21 KWBC

FZNT21 KWBC 252025
OFFNT1

Offshore Waters Forecast
NWS Ocean Prediction Center Washington DC
425 PM EDT Wed Apr 25 2018

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.

ANZ898-260845-
425 PM EDT Wed Apr 25 2018

SYNOPSIS FOR NEW ENGLAND WATERS
Low pressure will slowly
approach from the SW this evening, accelerate N near the New
England coast tonight, then move inland toward northern Maine
Thu. The low will pull a warm front N into the region tonight,
then pull a cold front E over the waters Thu. A low pressure
trough will pass E through the waters later Thu and Thu night
before weak high pressure quickly moves E over the area Fri. Weak
low pressure will approach from the SW by Fri night, and move NE
over the area Fri night into early Sat as another cold front
approaches the waters from the NW. The cold front will move SE
over the area Sat night, followed by a secondary cold front late
Sun. High pressure will build SE over the eastern states Sun
night and persist through Mon night. 



ANZ800-260845-
Gulf of Maine to the Hague Line-
425 PM EDT Wed Apr 25 2018

TONIGHT
SE winds 20 to 30 kt. Seas 7 to 13 ft. Rain early, then
showers and scattered TSTMs. Areas of fog with VSBY 1 nm or
less.

THU
Winds veering to S to SW 20 to 30 kt. Seas 8 to 14 ft. Rain,
then areas of fog with VSBY 1 nm or less.

THU NIGHT
W to SW winds 15 to 25 kt. Seas subsiding to 7 to 12
ft. Areas of fog with VSBY 1 nm or less.

FRI
W to SW winds diminishing to 5 to 10 kt, then becoming S to
SE 5 to 15 kt. Seas subsiding to 5 to 8 ft. Areas of fog with VSBY 1
nm or less.

FRI NIGHT
SE winds increasing to 15 to 25 kt, then becoming S.
Seas 5 to 7 ft.

SAT
S to SW winds 10 to 20 kt. Seas 4 to 7 ft.

SAT NIGHT
S winds 10 to 20 kt, diminishing to 5 to 15 kt. Seas 4
to 5 ft.

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

SUN NIGHT
W to SW winds 5 to 15 kt, becoming NW. Seas 4 to 5 ft.

MON
W to NW winds 5 to 15 kt. Seas 3 to 5 ft.

MON NIGHT
W to SW winds 5 to 15 kt, becoming W to NW. Seas 3 to 4
ft.



ANZ805-260845-
Georges Bank between Cape Cod and 68W north of 1000 fm-
425 PM EDT Wed Apr 25 2018

GALE WARNING


TONIGHT
 S to SE winds 20 to 30 kt, increasing to 30 to 40 kt.
Seas 10 to 17 ft. Showers and scattered TSTMs. Areas of fog with
VSBY 1 nm or less.

THU
S to SW winds diminishing to 20 to 30 kt. Seas subsiding to 9
to 15 ft. Chance of showers. Areas of fog with VSBY 1 nm or less.

THU NIGHT
SW winds diminishing to 10 to 20 kt, then becoming W to
SW 5 to 15 kt. Seas subsiding to 6 to 11 ft. Areas of fog with VSBY
1 nm or less.

FRI
S to SW winds 5 to 10 kt, becoming SE 10 to 20 kt. Seas
subsiding to 5 to 7 ft. Areas of fog with VSBY 1 nm or less.

FRI NIGHT
S to SE winds 15 to 25 kt. Seas 5 to 7 ft.

SAT
Winds veering to W to SW 10 to 20 kt, then becoming S to SW 5
to 15 kt. Seas 4 to 6 ft.

SAT NIGHT
S winds 5 to 15 kt, becoming S to SW. Seas 4 to 6 ft.

SUN
W to SW winds 5 to 15 kt, becoming W 10 to 20 kt. Seas 4 to 5
ft.

SUN NIGHT
W winds 10 to 20 kt. Seas 4 to 6 ft.

MON
W to NW winds 10 to 20 kt, becoming W 5 to 15 kt. Seas 3 to 6
ft.

MON NIGHT
W to NW winds 10 to 15 kt. Seas 3 to 5 ft.



ANZ900-260845-
Georges Bank between 68W and the Hague Line-
425 PM EDT Wed Apr 25 2018

GALE WARNING


TONIGHT
S to SE winds 20 to 25 kt, increasing to 30 to 40 kt.
Seas 10 to 17 ft. Rain with VSBY 1 nm or less.

THU
S winds 30 to 40 kt, becoming SW 15 to 20 kt. Seas 11 to 17
ft. Scattered showers and TSTMs. Areas of fog with VSBY 1 nm or
less.

THU NIGHT
SW winds 15 to 25 kt, diminishing to 10 to 15 kt. Seas
subsiding to 7 to 12 ft. Areas of fog with VSBY 1 nm or less.

FRI
S to SW winds 5 to 10 kt, becoming SE 10 to 15 kt. Seas
subsiding to 6 to 8 ft. Areas of fog with VSBY 1 nm or less.

FRI NIGHT
S to SE winds increasing to 15 to 25 kt. Seas 5 to 7
ft.

SAT
S to SW winds 10 to 20 kt, becoming W to SW less than 10 kt.
Seas 5 to 6 ft.

SAT NIGHT
S to SE winds 5 to 10 kt, becoming variable. Seas 5 to
6 ft.

SUN
W to SW winds less than 10 kt, increasing to 10 to 15 kt.
Seas 4 to 6 ft.

SUN NIGHT
W winds 10 to 20 kt. Seas 4 to 6 ft.

MON
W winds 10 to 15 kt. Seas 4 to 6 ft.

MON NIGHT
W winds 5 to 15 kt. Seas 3 to 5 ft.



ANZ810-260845-
South of New England between the Great South Channel and Montauk
Point to 1000 fm-
425 PM EDT Wed Apr 25 2018

GALE WARNING


TONIGHT
S to SE winds 25 to 30 kt, becoming 25 to 35 kt. Seas 10
to 17 ft. Showers and scattered TSTMs early, then rain and areas of
fog with VSBY 1 nm or less.

THU
Winds diminishing to W to SW 15 to 20 kt. Seas subsiding to 9
to 14 ft. Chance of showers and areas of fog with VSBY 1 nm or less.

THU NIGHT
W to SW winds 10 to 20 kt, becoming SW 5 to 15 kt. Seas
subsiding to 6 to 10 ft. Areas of fog with VSBY 1 nm or less.

FRI
S to SE winds 5 to 10 kt, becoming SE 10 to 20 kt. Seas
subsiding to 5 to 7 ft. Areas of fog with VSBY 1 nm or less.

FRI NIGHT
Winds veering to S to SW 15 to 25 kt. Seas 5 to 7 ft.

SAT
W to SW winds diminishing to 5 to 15 kt, then becoming S to
SW. Seas 5 to 6 ft.

SAT NIGHT
S winds 5 to 15 kt, becoming W to SW. Seas 4 to 5 ft.

SUN
W winds 5 to 15 kt, increasing to 15 to 20 kt. Seas 4 to 6
ft.

SUN NIGHT
W winds 15 to 20 kt, becoming NW. Seas 4 to 6 ft.

MON
NW winds 15 to 20 kt, becoming W 10 to 20 kt. Seas 3 to 6 ft.

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



ANZ815-260845-
South of Long Island between Montauk Point and Sandy Hook to
1000 fm-
425 PM EDT Wed Apr 25 2018

TONIGHT
S winds 20 to 30 kt, becoming W to SW 5 to 15 kt. Seas 9
to 15 ft. Showers and scattered TSTMs. Areas of fog with VSBY 1 nm
or less.

THU
W to SW winds 10 to 20 kt. Seas subsiding to 7 to 12 ft.
Areas of fog with VSBY 1 nm or less.

THU NIGHT
SW winds 5 to 15 kt, becoming variable. Seas subsiding
to 5 to 9 ft. Areas of fog with VSBY 1 nm or less.

FRI
E to SE winds 5 to 15 kt, becoming S to SE 10 to 20 kt. Seas
subsiding to 4 to 6 ft. Rain and areas of fog with VSBY 1 nm or
less.

FRI NIGHT
S to SW winds 15 to 25 kt, becoming W 5 to 15 kt. Seas
4 to 7 ft.

SAT
SW winds 5 to 10 kt, becoming S 5 to 15 kt. Seas 4 to 6 ft.

SAT NIGHT
S to SW winds 5 to 15 kt, becoming W. Seas 3 to 5 ft.

SUN
NW winds increasing to 15 to 20 kt, then becoming W 10 to 20
kt. Seas 3 to 6 ft.

SUN NIGHT
NW winds 15 to 20 kt. Seas 3 to 5 ft.

MON
W to NW winds 10 to 20 kt. Seas 3 to 6 ft.

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



.Forecaster Kosier. Ocean Prediction Center.