Sandy Bay Weather Center
Weather Center


X

ANZ230 Boston Harbor

Expires:202511071300;;970219
FZUS51 KBOX 070004
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
704 PM EST Thu Nov 6 2025

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


ANZ230-071300-
Boston Harbor-
704 PM EST Thu Nov 6 2025

.TONIGHT...NW winds 15 to 20 kt, becoming W 10 to 15 kt after
midnight. Waves around 2 ft this evening, then 1 foot or less.
Scattered sprinkles this evening. 
.FRI...SW winds around 10 kt, becoming S 15 to 20 kt with gusts
up to 25 kt in the afternoon. Waves around 2 ft. 
.FRI NIGHT...S winds 20 to 25 kt, becoming SW 15 to 20 kt after
midnight. Waves around 2 ft. Rain.
.SAT...W winds 10 to 15 kt. Waves around 2 ft. Rain likely in the
morning. 
.SAT NIGHT...NW winds 5 to 10 kt, becoming NE after midnight.
Waves 1 foot or less. 
.SUN AND SUN NIGHT...E winds 10 to 15 kt with gusts up to 20 kt.
Waves around 2 ft. A chance of rain in the morning, then rain. 
.MON...W winds 10 to 15 kt with gusts up to 20 kt. Waves around
2 ft. Rain likely. 
.MON NIGHT...W winds 15 to 20 kt. Waves around 2 ft. A chance of
rain. 
.TUE AND TUE NIGHT...W winds 20 to 25 kt with gusts up to 30 kt.
Waves 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.

$$


	
X

ANZ231 Cape Cod Bay

		
Expires:202511071300;;970210
FZUS51 KBOX 070004
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
704 PM EST Thu Nov 6 2025

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


ANZ231-071300-
Cape Cod Bay-
704 PM EST Thu Nov 6 2025

.TONIGHT...NW winds 15 to 20 kt, becoming W 10 to 15 kt after
midnight. Gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: N 4 ft
at 6 seconds and SW 1 foot at 10 seconds. Scattered sprinkles
this evening. 
.FRI...W winds around 10 kt, becoming SW 20 to 25 kt with gusts
up to 30 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: SW
3 ft at 4 seconds and S 3 ft at 8 seconds. 
.FRI NIGHT...SW winds 20 to 25 kt with gusts up to 30 kt. Seas
3 to 4 ft. Wave Detail: SW 4 ft at 5 seconds and E 1 foot at
5 seconds. A chance of rain in the evening, then rain after
midnight. Patchy fog after midnight with vsby 1 to 3 NM. 
.SAT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming W
5 to 10 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: S 2 ft
at 5 seconds and SE 1 foot at 11 seconds. Rain likely, mainly in
the morning. 
.SAT NIGHT...NW winds 5 to 10 kt, becoming NE after midnight.
Seas 1 foot or less. Wave Detail: NW 1 foot at 2 seconds and S
1 foot at 7 seconds. 
.SUN...E winds 5 to 10 kt, becoming SE 10 to 15 kt with gusts up
to 25 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: SE 2 ft
at 3 seconds and S 2 ft at 7 seconds. A chance of rain in the
morning, then rain likely in the afternoon. 
.SUN NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft. Rain.
.MON...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around
2 ft. Rain likely. 
.MON NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas
2 to 3 ft. A chance of rain. 
.TUE...W winds 25 to 30 kt with gusts up to 35 kt. Seas 4 to
6 ft. A chance of rain. 
.TUE NIGHT...W winds 25 to 30 kt with gusts up to 35 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.

$$


	        
X

ANZ232 Nantucket Sound

Expires:202511071300;;970214
FZUS51 KBOX 070004
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
704 PM EST Thu Nov 6 2025

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


ANZ232-071300-
Nantucket Sound-
704 PM EST Thu Nov 6 2025

.TONIGHT...NW winds 20 to 25 kt, diminishing to 10 to 15 kt after
midnight. Seas 2 to 4 ft. Wave Detail: NW 4 ft at 5 seconds and
SW 2 ft at 9 seconds. 
.FRI...W winds 10 to 15 kt, becoming SW 20 to 25 kt in the
afternoon. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and
S 3 ft at 7 seconds. 
.FRI NIGHT...SW winds 25 to 30 kt. Seas 4 to 6 ft. Wave Detail:
SW 5 ft at 5 seconds and NE 1 foot at 6 seconds. A chance of rain
in the evening, then rain likely after midnight. Patchy fog after
midnight with vsby 1 to 3 NM. 
.SAT...SW winds 15 to 20 kt with gusts up to 25 kt, becoming W
10 to 15 kt in the afternoon. Seas 3 to 5 ft. Wave Detail: SW
3 ft at 4 seconds and SW 3 ft at 8 seconds. Rain likely, mainly
in the morning. Patchy fog in the morning. 
.SAT NIGHT...NW winds 5 to 10 kt, becoming NE after midnight.
Seas 2 to 3 ft. Wave Detail: S 2 ft at 7 seconds and NE 1 foot at
3 seconds. 
.SUN...E winds 10 to 15 kt, becoming SE 15 to 20 kt in the
afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SE
3 ft at 4 seconds and S 2 ft at 7 seconds. A chance of rain in
the morning, then rain likely in the afternoon. 
.SUN NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas
2 to 4 ft. Rain.
.MON...SW winds 15 to 20 kt. Seas 2 to 4 ft. Rain likely. 
.MON NIGHT...W winds 20 to 25 kt with gusts up to 30 kt. Seas
4 to 6 ft. A chance of rain. 
.TUE...W winds 25 to 35 kt with gusts up to 40 kt. Seas 5 to
7 ft. A chance of rain. 
.TUE NIGHT...W winds 30 to 40 kt. Seas 5 to 7 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.

$$


	                	
X

ANZ233 Vinyard Sound

Expires:202511071300;;970215
FZUS51 KBOX 070004
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
704 PM EST Thu Nov 6 2025

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


ANZ233-071300-
Vineyard Sound-
704 PM EST Thu Nov 6 2025

.TONIGHT...NW winds 15 to 20 kt, diminishing to 10 to 15 kt after
midnight. Seas 2 to 4 ft. Wave Detail: SW 4 ft at 9 seconds and N
3 ft at 5 seconds. 
.FRI...W winds 10 to 15 kt, becoming SW 20 to 25 kt with gusts up
to 30 kt in the afternoon. Seas around 2 ft, building to 3 to
5 ft in the afternoon. Wave Detail: W 2 ft at 4 seconds and SW
2 ft at 8 seconds, becoming S 5 ft at 7 seconds and SW 3 ft at
4 seconds. 
.FRI NIGHT...SW winds 25 to 30 kt. Seas 5 to 8 ft. Wave Detail:
SW 7 ft at 6 seconds and SE 1 foot at 11 seconds. A chance of
rain in the evening, then rain likely after midnight. Patchy fog
after midnight with vsby 1 to 3 NM. 
.SAT...SW winds 15 to 20 kt, becoming W 10 to 15 kt in the
afternoon. Seas 4 to 6 ft, subsiding to 2 to 4 ft in the
afternoon. Wave Detail: SW 6 ft at 8 seconds and W 1 foot at
4 seconds, becoming SW 4 ft at 8 seconds and W 1 foot at
4 seconds. Rain likely, mainly in the morning. 
.SAT NIGHT...NW winds 5 to 10 kt, becoming NE after midnight.
Seas 2 to 3 ft. Wave Detail: SW 3 ft at 7 seconds and NE 1 foot
at 2 seconds. 
.SUN...E winds 10 to 15 kt, becoming SE 15 to 20 kt in the
afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: S 3 ft
at 7 seconds and SE 2 ft at 3 seconds. A chance of rain in the
morning, then rain likely in the afternoon. 
.SUN NIGHT...SE winds 15 to 20 kt, becoming S 10 to 15 kt after
midnight. Gusts up to 25 kt. Seas 2 to 4 ft. Rain likely. 
.MON...W winds 15 to 20 kt. Seas 2 to 4 ft. A chance of rain. 
.MON NIGHT...W winds 20 to 25 kt. Seas 4 to 6 ft. A chance of
rain. 
.TUE...W winds 25 to 30 kt with gusts up to 35 kt. Seas 5 to
7 ft. A chance of rain. 
.TUE NIGHT...W winds 25 to 35 kt. Seas 5 to 7 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.

$$


		                	
X

ANZ234 Buzzards Bay

Expires:202511071300;;970216
FZUS51 KBOX 070004
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
704 PM EST Thu Nov 6 2025

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


ANZ234-071300-
Buzzards Bay-
704 PM EST Thu Nov 6 2025

.TONIGHT...NW winds 15 to 20 kt, diminishing to 10 to 15 kt after
midnight. Seas 2 to 3 ft. Wave Detail: N 3 ft at 5 seconds and SW
3 ft at 9 seconds. 
.FRI...W winds 10 to 15 kt, becoming SW 20 to 25 kt with gusts up
to 30 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: S 4 ft at
7 seconds and SW 3 ft at 4 seconds. 
.FRI NIGHT...SW winds 25 to 30 kt. Seas 4 to 6 ft. Wave Detail:
SW 6 ft at 7 seconds and SW 3 ft at 4 seconds. A chance of rain
in the evening, then rain likely after midnight. Patchy fog after
midnight with vsby 1 to 3 NM. 
.SAT...SW winds 15 to 20 kt, becoming W 10 to 15 kt in the
afternoon. Seas 3 to 5 ft, subsiding to 2 to 3 ft in the
afternoon. Wave Detail: SW 5 ft at 8 seconds and W 2 ft at
4 seconds, becoming SW 3 ft at 8 seconds and W 1 foot at
3 seconds. Rain likely, mainly in the morning. 
.SAT NIGHT...NW winds 5 to 10 kt, becoming NE after midnight.
Seas 2 to 3 ft. Wave Detail: SW 2 ft at 7 seconds and NE 1 foot
at 3 seconds. 
.SUN...E winds 10 to 15 kt, becoming SE 15 to 20 kt in the
afternoon. Gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: SE
2 ft at 3 seconds and SW 2 ft at 7 seconds. A chance of rain in
the morning, then rain likely in the afternoon. 
.SUN NIGHT...SE winds 15 to 20 kt, becoming S 10 to 15 kt after
midnight. Gusts up to 25 kt. Seas 2 to 3 ft. Rain likely. 
.MON...W winds 15 to 20 kt. Seas 2 to 3 ft. A chance of rain. 
.MON NIGHT AND TUE...W winds 20 to 25 kt, increasing to 25 to
30 kt with gusts up to 35 kt. Seas 3 to 5 ft. A chance of rain. 
.TUE NIGHT...W winds 25 to 30 kt with gusts up to 35 kt. Seas
4 to 6 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.

$$


		              	
X

ANZ235 Rhode Island Sound

Expires:202511071300;;970217
FZUS51 KBOX 070004
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
704 PM EST Thu Nov 6 2025

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


ANZ235-071300-
Rhode Island Sound-
704 PM EST Thu Nov 6 2025

.TONIGHT...NW winds 15 to 20 kt with gusts up to 25 kt,
diminishing to 10 to 15 kt after midnight. Seas 3 to 5 ft. Wave
Detail: NW 4 ft at 5 seconds and SW 4 ft at 9 seconds. 
.FRI...W winds 10 to 15 kt, becoming SW 20 to 25 kt with gusts up
to 30 kt in the afternoon. Seas around 2 ft, building to 4 to
6 ft in the afternoon. Wave Detail: W 2 ft at 4 seconds and SW
2 ft at 8 seconds, becoming SW 6 ft at 6 seconds and SE 1 foot at
11 seconds. 
.FRI NIGHT...SW winds 25 to 30 kt. Seas 6 to 9 ft. Wave Detail: S
9 ft at 7 seconds and SW 2 ft at 4 seconds. A chance of rain in
the evening, then rain after midnight. Patchy fog after midnight
with vsby 1 to 3 NM. 
.SAT...W winds 15 to 20 kt with gusts up to 25 kt, diminishing to
10 to 15 kt in the afternoon. Seas 5 to 7 ft, subsiding to 3 to
5 ft in the afternoon. Wave Detail: SW 7 ft at 8 seconds and W
2 ft at 5 seconds, becoming S 5 ft at 8 seconds and W 1 foot at
3 seconds. Rain likely in the morning. 
.SAT NIGHT...NW winds 5 to 10 kt, becoming NE after midnight.
Seas 3 to 4 ft. Wave Detail: S 4 ft at 7 seconds and W 1 foot at
3 seconds. 
.SUN...SE winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. Gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: S 5 ft
at 7 seconds and SE 3 ft at 4 seconds. A chance of rain in the
morning, then rain likely in the afternoon. 
.SUN NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas
3 to 5 ft. Rain likely. 
.MON...W winds 15 to 20 kt. Seas 3 to 5 ft. A chance of rain. 
.MON NIGHT AND TUE...W winds 20 to 25 kt, increasing to 25 to
35 kt. Seas 5 to 8 ft. A chance of rain. 
.TUE NIGHT...W winds 25 to 30 kt with gusts up to 35 kt. Seas
5 to 8 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.

$$


		
X

ANZ236 Narragansett Bay

Expires:202511071300;;970220
FZUS51 KBOX 070004
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
704 PM EST Thu Nov 6 2025

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


ANZ236-071300-
Narragansett Bay-
704 PM EST Thu Nov 6 2025

.TONIGHT...NW winds 10 to 15 kt with gusts up to 20 kt, becoming
W 5 to 10 kt after midnight. Waves 2 to 3 ft. 
.FRI...SW winds 10 to 15 kt, increasing to 20 to 25 kt with gusts
up to 30 kt in the afternoon. Waves 2 to 4 ft. 
.FRI NIGHT...SW winds 20 to 25 kt with gusts up to 30 kt. Waves
4 to 6 ft. A chance of rain in the evening, then rain after
midnight. Patchy fog after midnight. 
.SAT...W winds 10 to 15 kt. Gusts up to 20 kt in the morning.
Waves 2 to 4 ft. Rain likely in the morning. 
.SAT NIGHT...NW winds 5 to 10 kt, becoming NE after midnight.
Waves 2 to 3 ft. 
.SUN AND SUN NIGHT...S winds 10 to 15 kt with gusts up to 20 kt.
Waves 2 to 3 ft. A chance of rain in the morning, then rain
likely. 
.MON AND MON NIGHT...W winds 10 to 15 kt, increasing to 15 to
20 kt. Gusts up to 25 kt. Waves 2 to 3 ft. A chance of rain. 
.TUE...W winds 20 to 25 kt with gusts up to 30 kt. Waves 3 to
5 ft. A chance of rain. 
.TUE NIGHT...W winds 20 to 25 kt with gusts up to 30 kt. Waves
4 to 6 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.

$$

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X

ANZ237 Block Island Sound

Expires:202511071300;;970218
FZUS51 KBOX 070004
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
704 PM EST Thu Nov 6 2025

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


ANZ237-071300-
Block Island Sound-
704 PM EST Thu Nov 6 2025

.TONIGHT...NW winds 15 to 20 kt, diminishing to 10 to 15 kt after
midnight. Seas 2 to 4 ft. Wave Detail: NW 3 ft at 4 seconds and S
3 ft at 9 seconds. 
.FRI...SW winds 10 to 15 kt with gusts up to 20 kt, increasing to
20 to 25 kt with gusts up to 30 kt in the afternoon. Seas around
2 ft, building to 3 to 5 ft in the afternoon. Wave Detail: W 2 ft
at 3 seconds and N 1 foot at 3 seconds, becoming S 5 ft at
7 seconds and SW 4 ft at 4 seconds. 
.FRI NIGHT...SW winds 25 to 30 kt, diminishing to 20 to 25 kt
after midnight. Seas 5 to 7 ft. Wave Detail: SW 7 ft at 6 seconds
and SE 1 foot at 11 seconds. A chance of rain in the evening,
then rain after midnight. Patchy fog after midnight. 
.SAT...W winds 10 to 15 kt. Gusts up to 20 kt in the morning.
Seas 4 to 6 ft, subsiding to 3 to 4 ft in the afternoon. Wave
Detail: S 5 ft at 8 seconds and W 2 ft at 5 seconds, becoming S
4 ft at 7 seconds and W 1 foot at 3 seconds. Rain likely in the
morning. 
.SAT NIGHT...NW winds 5 to 10 kt, becoming NE after midnight.
Seas 2 to 4 ft. Wave Detail: S 3 ft at 7 seconds and W 1 foot at
3 seconds. 
.SUN AND SUN NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt.
Seas 3 to 5 ft. Wave Detail: SE 5 ft at 5 seconds and SE 1 foot
at 11 seconds. A chance of rain in the morning, then rain likely.
.MON...W winds 15 to 20 kt. Seas 3 to 5 ft. A chance of rain. 
.MON NIGHT...W winds 20 to 25 kt. Seas 4 to 6 ft. A chance of
rain. 
.TUE...W winds 25 to 30 kt with gusts up to 35 kt. Seas 5 to
7 ft. A chance of rain. 
.TUE NIGHT...W winds 25 to 30 kt with gusts up to 35 kt. Seas
5 to 7 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.

$$


			
X

ANZ250 Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary

Expires:202511071300;;970208
FZUS51 KBOX 070004
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
704 PM EST Thu Nov 6 2025

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


ANZ250-071300-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
704 PM EST Thu Nov 6 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EST FRIDAY...

.TONIGHT...NW winds 15 to 20 kt, becoming W 10 to 15 kt after
midnight. Gusts up to 25 kt. Seas 5 to 7 ft, subsiding to 3 to
5 ft after midnight. Wave Detail: NW 6 ft at 6 seconds and SE
1 foot at 11 seconds, becoming NW 4 ft at 5 seconds and S 1 foot
at 9 seconds. Scattered sprinkles this evening. 
.FRI...W winds 10 to 15 kt, becoming SW 15 to 20 kt with gusts up
to 30 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: SW 3 ft
at 5 seconds and N 1 foot at 5 seconds. 
.FRI NIGHT...S winds 20 to 25 kt, becoming SW 15 to 20 kt after
midnight. Gusts up to 30 kt. Seas 3 to 5 ft. Wave Detail: S 5 ft
at 5 seconds and SE 1 foot at 11 seconds. Rain.
.SAT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming W
5 to 10 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: SW 3 ft
at 5 seconds and SE 1 foot at 11 seconds. Rain likely, mainly in
the morning with vsby 1 to 3 NM. 
.SAT NIGHT...NW winds around 10 kt, becoming NE after midnight.
Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds and NW 1 foot
at 3 seconds. 
.SUN...E winds 10 to 15 kt. Gusts up to 25 kt in the afternoon.
Seas 2 to 3 ft. Wave Detail: E 3 ft at 4 seconds and SE 2 ft at
7 seconds. A chance of rain in the morning, then rain likely in
the afternoon. 
.SUN NIGHT...SE winds 15 to 20 kt with gusts up to 25 kt. Seas
2 to 4 ft. Rain.
.MON...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. Rain likely. 
.MON NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas
4 to 6 ft. A chance of rain. 
.TUE...W winds 25 to 30 kt with gusts up to 40 kt. Seas 5 to
7 ft. A chance of rain. 
.TUE NIGHT...W winds 25 to 30 kt with gusts up to 35 kt. Seas
5 to 7 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.

$$


	
X

ANZ251 Massachusetts Bay and Ipswich Bay

Expires:202511071300;;970209
FZUS51 KBOX 070004
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
704 PM EST Thu Nov 6 2025

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


ANZ251-071300-
Massachusetts Bay and Ipswich Bay-
704 PM EST Thu Nov 6 2025

.TONIGHT...NW winds 15 to 20 kt, becoming W 10 to 15 kt after
midnight. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: N 3 ft
at 5 seconds and SW 1 foot at 9 seconds. Scattered sprinkles this
evening. 
.FRI...SW winds 10 to 15 kt, becoming S 15 to 20 kt with gusts up
to 25 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: S 3 ft at
4 seconds and N 1 foot at 5 seconds. 
.FRI NIGHT...S winds 20 to 25 kt, becoming SW 15 to 20 kt after
midnight. Gusts up to 30 kt. Seas 2 to 4 ft. Wave Detail: S 4 ft
at 5 seconds and SE 1 foot at 12 seconds. Rain.
.SAT...W winds 10 to 15 kt. Gusts up to 20 kt in the morning.
Seas 2 to 3 ft. Wave Detail: SW 2 ft at 3 seconds and SE 2 ft at
5 seconds. Rain likely in the morning. 
.SAT NIGHT...NW winds 5 to 10 kt, becoming NE after midnight.
Seas around 2 ft. Wave Detail: NW 1 foot at 2 seconds and SE
1 foot at 5 seconds. 
.SUN AND SUN NIGHT...E winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. Wave Detail: SE 3 ft at 6 seconds and NW 1 foot
at 3 seconds. A chance of rain in the morning, then rain. 
.MON...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around
2 ft. Rain likely. 
.MON NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas
2 to 4 ft. A chance of rain. 
.TUE AND TUE NIGHT...W winds 20 to 25 kt, increasing to 25 to
30 kt. Seas 3 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.

$$


		
X

ANZ254 Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 NM

 
Expires:202511071300;;970211
FZUS51 KBOX 070004
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
704 PM EST Thu Nov 6 2025

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


ANZ254-071300-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
704 PM EST Thu Nov 6 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EST FRIDAY...

.TONIGHT...NW winds 20 to 25 kt with gusts up to 30 kt,
diminishing to 10 to 15 kt with gusts up to 20 kt after midnight.
Seas 5 to 7 ft. Wave Detail: N 6 ft at 7 seconds and S 2 ft at
10 seconds. 
.FRI...W winds 10 to 15 kt, becoming SW 15 to 20 kt with gusts up
to 25 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: SW 4 ft
at 5 seconds and N 2 ft at 7 seconds. 
.FRI NIGHT...SW winds 20 to 25 kt with gusts up to 30 kt. Seas
5 to 7 ft. Wave Detail: S 7 ft at 7 seconds and N 3 ft at
6 seconds. A chance of rain in the evening, then rain likely
after midnight. Patchy fog after midnight. 
.SAT...SW winds 15 to 20 kt, becoming W 10 to 15 kt in the
afternoon. Gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: SW
6 ft at 6 seconds and SE 1 foot at 11 seconds. Rain likely,
mainly in the morning with vsby 1 to 3 NM. 
.SAT NIGHT...NW winds 5 to 10 kt, becoming NE after midnight.
Seas 2 to 4 ft. Wave Detail: S 3 ft at 7 seconds and NW 1 foot at
4 seconds. 
.SUN...E winds 10 to 15 kt, becoming SE 15 to 20 kt with gusts up
to 25 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: SE 3 ft
at 4 seconds and S 3 ft at 7 seconds. A chance of rain in the
morning, then rain likely in the afternoon. 
.SUN NIGHT...SE winds 15 to 20 kt, becoming S 10 to 15 kt after
midnight. Gusts up to 25 kt. Seas 3 to 5 ft. Rain.
.MON...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to
6 ft. Rain likely. 
.MON NIGHT...W winds 20 to 25 kt. Seas 5 to 8 ft. A chance of
rain. 
.TUE AND TUE NIGHT...W winds 25 to 35 kt with gusts up to 40 kt.
Seas 6 to 9 ft. A chance of rain.  

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.

$$


		
X

ANZ255 Coastal waters extending out to 25 NM south of Martha’s Vineyard and Nantucket

Expires:202511071300;;970212
FZUS51 KBOX 070004
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
704 PM EST Thu Nov 6 2025

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


ANZ255-071300-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
704 PM EST Thu Nov 6 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EST FRIDAY...

.TONIGHT...NW winds 20 to 25 kt, diminishing to 15 to 20 kt after
midnight. Seas 5 to 7 ft. Wave Detail: NW 7 ft at 7 seconds and
SW 5 ft at 9 seconds. 
.FRI...W winds 10 to 15 kt, becoming SW 20 to 25 kt with gusts up
to 30 kt in the afternoon. Seas 2 to 3 ft, building to 3 to 5 ft
in the afternoon. Wave Detail: SW 3 ft at 7 seconds and N 1 foot
at 6 seconds, becoming SW 5 ft at 6 seconds and NE 1 foot at
6 seconds. 
.FRI NIGHT...SW winds 25 to 30 kt. Seas 7 to 10 ft. Wave Detail:
SW 10 ft at 8 seconds and SW 2 ft at 4 seconds. Patchy fog after
midnight. Rain likely after midnight with vsby 1 to 3 NM. 
.SAT...SW winds 20 to 25 kt, becoming W 10 to 15 kt in the
afternoon. Seas 6 to 9 ft, subsiding to 4 to 6 ft in the
afternoon. Wave Detail: SW 9 ft at 8 seconds and W 1 foot at
4 seconds, becoming SW 6 ft at 8 seconds and W 1 foot at
4 seconds. Rain likely, mainly in the morning with vsby 1 to
3 NM. 
.SAT NIGHT...NW winds around 10 kt, becoming NE after midnight.
Seas 3 to 5 ft. Wave Detail: SW 5 ft at 7 seconds and W 1 foot at
3 seconds. 
.SUN...E winds 10 to 15 kt, becoming SE 15 to 20 kt in the
afternoon. Gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: S 5 ft
at 7 seconds and SE 2 ft at 4 seconds. A chance of rain in the
morning, then rain likely in the afternoon. 
.SUN NIGHT...S winds 20 to 25 kt, diminishing to 15 to 20 kt
after midnight. Seas 3 to 5 ft. Rain.
.MON...W winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to
7 ft. Rain likely. 
.MON NIGHT...W winds 25 to 30 kt. Seas 7 to 10 ft. A chance of
rain. 
.TUE...W winds 30 to 40 kt. Seas 9 to 12 ft. A chance of rain. 
.TUE NIGHT...W winds 30 to 40 kt with gusts up to 45 kt. Seas
8 to 11 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.

$$


		
X

ANZ256 Coastal waters from Montauk NY to Martha’s Vineyard extending out to 20 NM south of Block Island

Expires:202511071300;;970213
FZUS51 KBOX 070004
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
704 PM EST Thu Nov 6 2025

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


ANZ256-071300-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
704 PM EST Thu Nov 6 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EST FRIDAY...

.TONIGHT...NW winds 20 to 25 kt, diminishing to 15 to 20 kt after
midnight. Seas 5 to 7 ft, subsiding to 3 to 5 ft after midnight.
Wave Detail: NW 5 ft at 5 seconds and SW 4 ft at 9 seconds,
becoming N 4 ft at 5 seconds and SW 3 ft at 9 seconds. 
.FRI...W winds 10 to 15 kt with gusts up to 20 kt, becoming SW
20 to 25 kt with gusts up to 30 kt in the afternoon. Seas 2 to
3 ft, building to 4 to 6 ft in the afternoon. Wave Detail: W 2 ft
at 4 seconds and S 2 ft at 8 seconds, becoming SW 6 ft at
6 seconds and SE 1 foot at 11 seconds. 
.FRI NIGHT...SW winds 25 to 30 kt. Seas 7 to 10 ft. Wave Detail:
SW 10 ft at 7 seconds and SW 1 foot at 4 seconds. A chance of
rain in the evening, then rain after midnight. Patchy fog after
midnight with vsby 1 to 3 NM. 
.SAT...W winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Gusts up to 25 kt. Seas 6 to 9 ft, subsiding to 4 to
6 ft in the afternoon. Wave Detail: SW 8 ft at 8 seconds and W
1 foot at 4 seconds, becoming SW 6 ft at 7 seconds and W 1 foot
at 3 seconds. Rain likely, mainly in the morning. 
.SAT NIGHT...NW winds 5 to 10 kt, becoming NE after midnight.
Seas 3 to 5 ft. Wave Detail: S 5 ft at 7 seconds and NW 1 foot at
3 seconds. 
.SUN...SE winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. Gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: S 5 ft
at 7 seconds and SE 3 ft at 4 seconds. A chance of rain in the
morning, then rain likely in the afternoon. 
.SUN NIGHT...S winds 20 to 25 kt, becoming SW 15 to 20 kt after
midnight. Seas 4 to 5 ft. Rain likely. 
.MON...W winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to
7 ft. A chance of rain. 
.MON NIGHT...W winds 25 to 30 kt. Seas 7 to 10 ft. A chance of
rain. 
.TUE...W winds 30 to 40 kt. Seas 8 to 11 ft. A chance of rain. 
.TUE NIGHT...W winds 30 to 40 kt with gusts up to 45 kt. Seas
7 to 10 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.

$$


		
X

ANZ270 Ocean waters from Merrimack River to Plymouth from 40 to 60 NM offshore

			
X

ANZ271 Ocean waters from Provincetown to Nantucket from 20 to 35 NM offshore

		
X

ANZ272 Ocean waters from Martha’s Vineyard to Nantucket from 25 to 40 NM offshore

		
X

ANZ273 Ocean waters from Montauk NY to Martha’s Vineyard from 25 to 40 NM offshore

 
		
X

ANZ230 Boston Harbor

 
Expires:202511071300;;970219
FZUS51 KBOX 070004
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
704 PM EST Thu Nov 6 2025

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


ANZ230-071300-
Boston Harbor-
704 PM EST Thu Nov 6 2025

.TONIGHT...NW winds 15 to 20 kt, becoming W 10 to 15 kt after
midnight. Waves around 2 ft this evening, then 1 foot or less.
Scattered sprinkles this evening. 
.FRI...SW winds around 10 kt, becoming S 15 to 20 kt with gusts
up to 25 kt in the afternoon. Waves around 2 ft. 
.FRI NIGHT...S winds 20 to 25 kt, becoming SW 15 to 20 kt after
midnight. Waves around 2 ft. Rain.
.SAT...W winds 10 to 15 kt. Waves around 2 ft. Rain likely in the
morning. 
.SAT NIGHT...NW winds 5 to 10 kt, becoming NE after midnight.
Waves 1 foot or less. 
.SUN AND SUN NIGHT...E winds 10 to 15 kt with gusts up to 20 kt.
Waves around 2 ft. A chance of rain in the morning, then rain. 
.MON...W winds 10 to 15 kt with gusts up to 20 kt. Waves around
2 ft. Rain likely. 
.MON NIGHT...W winds 15 to 20 kt. Waves around 2 ft. A chance of
rain. 
.TUE AND TUE NIGHT...W winds 20 to 25 kt with gusts up to 30 kt.
Waves 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.

$$


		


  • Click on a zone to display the forecast for that area.
ANZ230 Boston Harbor ANZ231 Cape Cod Bay ANZ232 Nantucket Sound ANZ233 Vinyard Sound ANZ234 Buzzards Bay ANZ235 Rhode Island Sound ANZ236 Narragansett Bay ANZ237 Block Island Sound ANZ250 Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary ANZ251 Massachusetts Bay and Ipswich Bay ANZ254 Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 NM ANZ255 Coastal waters extending out to 25 NM south of Martha’s Vineyard and Nantucket ANZ256 Coastal waters from Montauk NY to Martha’s Vineyard extending out to 20 NM south of Block Island ANZ270 Ocean waters from Merrimack River to Plymouth from 40 to 60 NM offshore ANZ271 Ocean waters from Provincetown to Nantucket from 20 to 35 NM offshore ANZ272 Ocean waters from Martha’s Vineyard to Nantucket from 25 to 40 NM offshore ANZ273 Ocean waters from Montauk NY to Martha’s Vineyard from 25 to 40 NM offshore ANZ230 Boston Harbor ANZ231 Cape Cod Bay ANZ232 Nantucket Sound ANZ233 Vinyard Sound ANZ234 Buzzards Bay ANZ235 Rhode Island Sound ANZ236 Narragansett Bay ANZ237 Block Island Sound ANZ250 Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary ANZ251 Massachusetts Bay and Ipswich Bay ANZ254 Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 NM ANZ255 Coastal waters extending out to 25 NM south of Martha’s Vineyard and Nantucket ANZ256 Coastal waters from Montauk NY to Martha’s Vineyard extending out to 20 NM south of Block Island ANZ270 Ocean waters from Merrimack River to Plymouth from 40 to 60 NM offshore ANZ271 Ocean waters from Provincetown to Nantucket from 20 to 35 NM offshore ANZ272 Ocean waters from Martha’s Vineyard to Nantucket from 25 to 40 NM offshore ANZ273 Ocean waters from Montauk NY to Martha’s Vineyard from 25 to 40 NM offshore

 

 



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