National Weather Service Marine Forecast FZUS51 KBOX

FZUS51 KBOX 041801
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
101 PM EST Sat Feb 4 2023

Coastal waters from the Merrimack River MA to Watch Hill RI out
to 25 NM

ANZ200-050700-
101 PM EST Sat Feb 4 2023

Synopsis for Massachusetts and Rhode Island coastal waters

Continued gale force winds this morning as cold arctic air continues
to move into the region. Extreme cold will cause moderate to heavy
freezing spray and is likely to impact vessels today. Well above
normal temperatures arrive Sunday afternoon with strong
southwesterly winds. Winds calm down across the waters Monday with
continued above normal temps


ANZ250-050700-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
101 PM EST Sat Feb 4 2023

GALE WARNING IN EFFECT UNTIL 4 PM EST THIS AFTERNOON

...HEAVY FREEZING SPRAY WARNING IN EFFECT UNTIL 4 PM EST THIS
AFTERNOON...

THIS AFTERNOON
W winds 20 to 25 kt with gusts up to 30 kt.
Seas 4 to 7 ft. Freezing spray.

TONIGHT
W winds 15 to 20 kt with gusts up to 25 kt, becoming
SW 20 to 25 kt with gusts up to 35 kt after midnight. Seas 3 to
5 ft.

SUN
SW winds 20 to 25 kt with gusts up to 35 kt. Seas 4 to
6 ft.

SUN NIGHT
SW winds 20 to 25 kt with gusts up to 35 kt,
diminishing to 10 to 15 kt with gusts up to 25 kt after midnight.
Seas 3 to 5 ft.

MON
W winds 10 to 15 kt, becoming N 15 to 20 kt in the
afternoon. Seas 2 to 4 ft.

MON NIGHT
N winds 20 to 25 kt, becoming NE 15 to 20 kt after
midnight. Seas 4 to 6 ft.

TUE
SE winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to
6 ft.

TUE NIGHT
SW winds 15 to 20 kt with gusts up to 30 kt. Seas
5 to 7 ft. A chance of rain.

WED
W winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to
6 ft.

WED NIGHT
W winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 4 ft. 

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.


ANZ251-050700-
Massachusetts Bay and Ipswich Bay-
101 PM EST Sat Feb 4 2023

GALE WARNING IN EFFECT UNTIL 4 PM EST THIS AFTERNOON

...HEAVY FREEZING SPRAY WARNING IN EFFECT UNTIL 4 PM EST THIS
AFTERNOON...

THIS AFTERNOON
W winds 15 to 20 kt with gusts up to 25 kt.
Seas 2 to 4 ft.

TONIGHT
SW winds 10 to 15 kt, increasing to 15 to 20 kt after
midnight. Gusts up to 30 kt. Seas 2 to 3 ft.

SUN
SW winds 15 to 20 kt with gusts up to 35 kt. Seas 3 to
4 ft.

SUN NIGHT
SW winds 10 to 15 kt with gusts up to 25 kt. Seas
2 to 4 ft.

MON
W winds 10 to 15 kt, becoming N 15 to 20 kt in the
afternoon. Seas around 2 ft.

MON NIGHT
N winds 15 to 20 kt. Seas 2 to 4 ft.

TUE
SE winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to
4 ft.

TUE NIGHT
SW winds 15 to 20 kt with gusts up to 30 kt. Seas
3 to 5 ft. A chance of rain.

WED AND WED NIGHT
W winds 10 to 15 kt with gusts up to 25 kt.
Seas 2 to 4 ft. 

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.


ANZ231-050700-
Cape Cod Bay-
101 PM EST Sat Feb 4 2023

GALE WARNING IN EFFECT UNTIL 4 PM EST THIS AFTERNOON

...HEAVY FREEZING SPRAY WARNING IN EFFECT UNTIL 4 PM EST THIS
AFTERNOON...

THIS AFTERNOON
W winds 15 to 20 kt with gusts up to 25 kt.
Seas 3 to 4 ft.

TONIGHT
SW winds 10 to 15 kt with gusts up to 20 kt,
increasing to 15 to 20 kt with gusts up to 30 kt after midnight.
Seas 2 to 4 ft.

SUN
SW winds 15 to 20 kt with gusts up to 35 kt. Seas 4 to
6 ft.

SUN NIGHT
SW winds 15 to 20 kt with gusts up to 30 kt,
diminishing to 10 to 15 kt with gusts up to 20 kt after midnight.
Seas 3 to 5 ft.

MON
W winds 5 to 10 kt, becoming N 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas 2 to 3 ft.

MON NIGHT
NE winds 15 to 20 kt with gusts up to 25 kt. Seas
3 to 4 ft.

TUE
SE winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to
4 ft.

TUE NIGHT
SW winds 15 to 20 kt with gusts up to 30 kt. Seas
3 to 4 ft. A chance of rain.

WED
W winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
4 ft.

WED NIGHT
W winds 10 to 15 kt. Seas around 2 ft.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.


ANZ254-050700-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
101 PM EST Sat Feb 4 2023

GALE WARNING IN EFFECT UNTIL 4 PM EST THIS AFTERNOON

...HEAVY FREEZING SPRAY WARNING IN EFFECT UNTIL 4 PM EST THIS
AFTERNOON...

THIS AFTERNOON
W winds 15 to 20 kt with gusts up to 30 kt.
Seas 4 to 7 ft. Freezing spray.

TONIGHT
W winds 10 to 15 kt with gusts up to 20 kt, becoming
SW 15 to 20 kt with gusts up to 30 kt after midnight. Seas 3 to
5 ft.

SUN
SW winds 20 to 25 kt with gusts up to 35 kt. Seas 5 to
7 ft.

SUN NIGHT
SW winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. Gusts up to 30 kt. Seas 4 to 7 ft. Patchy fog. A
chance of rain. Vsby 1 to 3 NM.

MON
W winds 10 to 15 kt, becoming N 15 to 20 kt in the
afternoon. Seas 3 to 5 ft.

MON NIGHT
NE winds 20 to 25 kt. Seas 4 to 7 ft.

TUE THROUGH WED
W winds 15 to 20 kt with gusts up to 30 kt.
Seas 4 to 7 ft.

WED NIGHT
W winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 5 ft. 

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.


ANZ255-050700-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
101 PM EST Sat Feb 4 2023

GALE WARNING IN EFFECT UNTIL 4 PM EST THIS AFTERNOON

...HEAVY FREEZING SPRAY WARNING IN EFFECT UNTIL 4 PM EST THIS
AFTERNOON...

THIS AFTERNOON
W winds 15 to 20 kt with gusts up to 25 kt.
Seas 4 to 6 ft. Freezing spray.

TONIGHT
W winds 10 to 15 kt with gusts up to 20 kt, becoming
SW 15 to 20 kt with gusts up to 30 kt after midnight. Seas 4 to
6 ft.

SUN
SW winds around 20 kt with gusts up to 30 kt. Seas 5 to
8 ft.

SUN NIGHT
SW winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. Gusts up to 30 kt. Seas 5 to 8 ft. Patchy fog. A
chance of rain. Vsby 1 to 3 NM.

MON
NW winds 10 to 15 kt, becoming N 15 to 20 kt with gusts up
to 25 kt in the afternoon. Seas 4 to 6 ft. Patchy fog. A chance
of rain. Vsby 1 to 3 NM.

MON NIGHT
N winds 20 to 25 kt. Seas 4 to 6 ft.

TUE
SE winds 15 to 20 kt. Seas 3 to 5 ft.

TUE NIGHT AND WED
SW winds 15 to 20 kt, becoming W. Gusts up
to 30 kt. Seas 4 to 7 ft.

WED NIGHT
W winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 5 ft. 

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.


ANZ256-050700-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
101 PM EST Sat Feb 4 2023

GALE WARNING IN EFFECT UNTIL 4 PM EST THIS AFTERNOON

...HEAVY FREEZING SPRAY WARNING IN EFFECT UNTIL 4 PM EST THIS
AFTERNOON...

THIS AFTERNOON
W winds 10 to 15 kt with gusts up to 25 kt.
Seas 3 to 5 ft.

TONIGHT
SW winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to
5 ft.

SUN
SW winds 20 to 25 kt with gusts up to 35 kt. Seas 7 to
9 ft.

SUN NIGHT
SW winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. Gusts up to 30 kt. Seas 6 to 9 ft. A chance of
rain.

MON AND MON NIGHT
NE winds 15 to 20 kt with gusts up to 25 kt.
Seas 4 to 6 ft.

TUE
SE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
5 ft.

TUE NIGHT AND WED
SW winds 15 to 20 kt, becoming W. Gusts up
to 30 kt. Seas 4 to 7 ft.

WED NIGHT
W winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 5 ft. 

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.


ANZ232-050700-
Nantucket Sound-
101 PM EST Sat Feb 4 2023

GALE WARNING IN EFFECT UNTIL 4 PM EST THIS AFTERNOON

...HEAVY FREEZING SPRAY WARNING IN EFFECT UNTIL 4 PM EST THIS
AFTERNOON...

THIS AFTERNOON
W winds 15 to 20 kt with gusts up to 25 kt.
Seas 2 to 3 ft.

TONIGHT
W winds 10 to 15 kt with gusts up to 20 kt, becoming
SW 15 to 20 kt with gusts up to 30 kt after midnight. Seas 2 to
4 ft.

SUN
SW winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to
5 ft.

SUN NIGHT
SW winds 15 to 20 kt with gusts up to 30 kt,
diminishing to 10 to 15 kt with gusts up to 20 kt after midnight.
Seas 3 to 5 ft. Patchy fog. A chance of rain. Vsby 1 to 3 NM.

MON
W winds 5 to 10 kt, becoming N 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas 2 to 3 ft. Patchy fog. A chance
of rain. Vsby 1 to 3 NM.

MON NIGHT
N winds 15 to 20 kt with gusts up to 25 kt. Seas
2 to 3 ft.

TUE THROUGH WED
W winds 15 to 20 kt with gusts up to 30 kt.
Seas 2 to 4 ft.

WED NIGHT
W winds around 10 kt with gusts up to 20 kt. Seas
around 2 ft. 

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.


ANZ233-050700-
Vineyard Sound-
101 PM EST Sat Feb 4 2023

GALE WARNING IN EFFECT UNTIL 4 PM EST THIS AFTERNOON

...HEAVY FREEZING SPRAY WARNING IN EFFECT UNTIL 4 PM EST THIS
AFTERNOON...

THIS AFTERNOON
W winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft.

TONIGHT
SW winds 10 to 15 kt, increasing to 15 to 20 kt after
midnight. Gusts up to 30 kt. Seas 2 to 4 ft.

SUN
SW winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to
6 ft.

SUN NIGHT
SW winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. Gusts up to 30 kt. Seas 4 to 6 ft. Patchy fog. A
chance of rain.

MON AND MON NIGHT
NE winds 15 to 20 kt. Seas 2 to 3 ft.

TUE THROUGH WED NIGHT
W winds 15 to 20 kt with gusts up to
30 kt. Seas 2 to 4 ft. 

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.


ANZ234-050700-
Buzzards Bay-
101 PM EST Sat Feb 4 2023

GALE WARNING IN EFFECT UNTIL 4 PM EST THIS AFTERNOON

...HEAVY FREEZING SPRAY WARNING IN EFFECT UNTIL 4 PM EST THIS
AFTERNOON...

THIS AFTERNOON
W winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft.

TONIGHT
SW winds 10 to 15 kt, increasing to 15 to 20 kt after
midnight. Gusts up to 30 kt. Seas 2 to 4 ft.

SUN
SW winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to
6 ft.

SUN NIGHT
SW winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. Gusts up to 30 kt. Seas 3 to 5 ft. A chance of
rain.

MON AND MON NIGHT
NE winds 15 to 20 kt. Seas 2 to 3 ft.

TUE THROUGH WED
W winds 15 to 20 kt with gusts up to 30 kt.
Seas 2 to 4 ft.

WED NIGHT
W winds around 10 kt. Seas around 2 ft. 

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.


ANZ235-050700-
Rhode Island Sound-
101 PM EST Sat Feb 4 2023

GALE WARNING IN EFFECT UNTIL 4 PM EST THIS AFTERNOON

...HEAVY FREEZING SPRAY WARNING IN EFFECT UNTIL 4 PM EST THIS
AFTERNOON...

THIS AFTERNOON
W winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft.

TONIGHT
SW winds 10 to 15 kt, increasing to 15 to 20 kt after
midnight. Gusts up to 30 kt. Seas 3 to 5 ft.

SUN
SW winds around 20 kt with gusts up to 30 kt. Seas 5 to
7 ft.

SUN NIGHT
SW winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. Gusts up to 30 kt. Seas 4 to 7 ft. A chance of
rain.

MON AND MON NIGHT
NE winds 15 to 20 kt. Seas 3 to 4 ft.

TUE
SE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
4 ft.

TUE NIGHT AND WED
SW winds 15 to 20 kt, becoming W. Gusts up
to 30 kt. Seas 4 to 6 ft.

WED NIGHT
W winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft. 

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.


ANZ237-050700-
Block Island Sound-
101 PM EST Sat Feb 4 2023

GALE WARNING IN EFFECT UNTIL 4 PM EST THIS AFTERNOON

...HEAVY FREEZING SPRAY WARNING IN EFFECT UNTIL 4 PM EST THIS
AFTERNOON...

THIS AFTERNOON
W winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft.

TONIGHT
SW winds 10 to 15 kt, increasing to 15 to 20 kt after
midnight. Gusts up to 30 kt. Seas 2 to 4 ft.

SUN
SW winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to
7 ft.

SUN NIGHT
SW winds 15 to 20 kt with gusts up to 30 kt,
diminishing to 10 to 15 kt with gusts up to 20 kt after midnight.
Seas 4 to 7 ft. A chance of rain.

MON AND MON NIGHT
NE winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 4 ft.

TUE
SE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft.

TUE NIGHT AND WED
SW winds 15 to 20 kt, becoming W. Gusts up
to 30 kt. Seas 3 to 5 ft.

WED NIGHT
W winds around 10 kt with gusts up to 20 kt. Seas
2 to 3 ft. 

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.


ANZ230-050700-
Boston Harbor-
101 PM EST Sat Feb 4 2023

THIS AFTERNOON
W winds 10 to 15 kt with gusts up to 25 kt.
Waves around 2 ft.

TONIGHT
SW winds 10 to 15 kt with gusts up to 25 kt. Waves
around 2 ft.

SUN
SW winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Gusts up to 30 kt. Waves around 2 ft.

SUN NIGHT
SW winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. Waves around 2 ft.

MON
W winds 10 to 15 kt, becoming N with gusts up to 20 kt in
the afternoon. Waves 1 foot or less, then around 2 ft in the
afternoon.

MON NIGHT
N winds 15 to 20 kt. Waves 2 to 3 ft.

TUE
SE winds 10 to 15 kt with gusts up to 20 kt.

TUE NIGHT
SW winds around 15 kt with gusts up to 25 kt. A
chance of rain.

WED AND WED NIGHT
W winds 10 to 15 kt. Gusts up to 25 kt. 

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.


ANZ236-050700-
Narragansett Bay-
101 PM EST Sat Feb 4 2023

THIS AFTERNOON
W winds 5 to 10 kt with gusts up to 20 kt.
Waves 2 to 3 ft.

TONIGHT
SW winds 5 to 10 kt, increasing to 10 to 15 kt after
midnight. Gusts up to 25 kt. Waves 2 to 3 ft.

SUN
SW winds 15 to 20 kt with gusts up to 30 kt. Waves around
3 ft.

SUN NIGHT
SW winds 10 to 15 kt, diminishing to 5 to 10 kt
after midnight. Gusts up to 25 kt. Waves 4 to 6 ft, decreasing to
2 to 4 ft after midnight.

MON AND MON NIGHT
N winds 10 to 15 kt with gusts up to 20 kt.
Waves 2 to 3 ft.

TUE
SE winds 10 to 15 kt with gusts up to 20 kt.

TUE NIGHT AND WED
SW winds around 15 kt, becoming W. Gusts up
to 25 kt.

WED NIGHT
W winds around 10 kt. 

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.


For the latest updates...please visit our webpage at
www.weather.gov/boston

You can follow us on Facebook at
www.facebook.com/NWSBoston

You can follow us on Twitter at
@NWSBoston