Sandy Bay Weather Center
Weather Center


X

ANZ230 Boston Harbor

Expires:202611101900;;566078
FZUS51 KBOX 100604
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
104 AM EST Tue Nov 10 2026

Coastal waters from the Merrimack River MA to Watch Hill RI out
to 60 NM


ANZ230-101900-
Boston Harbor-
104 AM EST Tue Nov 10 2026

.REST OF TONIGHT...W winds around 10 kt with gusts up to 20 kt.
Waves around 2 ft. 
.TUE...W winds around 10 kt with gusts up to 20 kt. Waves around
2 ft. 
.TUE NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Waves
around 2 ft. 
.WED...NW winds 5 to 10 kt with gusts up to 20 kt. Waves around
2 ft. 
.WED NIGHT...N winds around 5 kt. Waves 1 foot or less. 
.THU...NE winds 5 to 10 kt, becoming E 10 to 15 kt in the
afternoon. Waves 1 foot or less, then around 2 ft in the
afternoon. 
.THU NIGHT...E winds 15 to 20 kt, becoming NE 20 to 25 kt after
midnight. Gusts up to 30 kt. Waves 2 to 3 ft. A chance of rain in
the evening, then rain likely after midnight. 
.FRI...NE winds 25 to 30 kt. Waves 2 to 3 ft, except 4 to 6 ft at
the outer harbor entrance. Rain likely. 
.FRI NIGHT AND SAT...N winds 20 to 25 kt, becoming NW 15 to
20 kt. Waves 2 to 3 ft, except 3 to 5 ft at the outer harbor
entrance. A chance of rain. 
.SAT NIGHT...NW winds 15 to 20 kt. Waves around 2 ft, except 3 to
5 ft at the outer harbor entrance.  

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:202611101900;;566069
FZUS51 KBOX 100604
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
104 AM EST Tue Nov 10 2026

Coastal waters from the Merrimack River MA to Watch Hill RI out
to 60 NM


ANZ231-101900-
Cape Cod Bay-
104 AM EST Tue Nov 10 2026

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM EST THIS MORNING...

.REST OF TONIGHT...W winds 10 to 15 kt with gusts up to 25 kt.
Seas around 3 ft. Wave Detail: N 3 ft at 5 seconds and E 1 foot
at 11 seconds. 
.TUE...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Wave Detail: N 2 ft at 5 seconds and E 1 foot at
11 seconds. 
.TUE NIGHT...W winds 10 to 15 kt, increasing to 15 to 20 kt after
midnight. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: W 2 ft
at 4 seconds and N 1 foot at 5 seconds. 
.WED...NW winds 10 to 15 kt, becoming N 5 to 10 kt in the
afternoon. Gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: N 2 ft
at 4 seconds and E 1 foot at 10 seconds. 
.WED NIGHT AND THU...E winds 10 to 15 kt with gusts up to 20 kt.
Seas around 2 ft. Wave Detail: N 1 foot at 5 seconds and E 1 foot
at 10 seconds. 
.THU NIGHT...E winds 20 to 25 kt, becoming NE 25 to 30 kt after
midnight. Seas 3 to 5 ft. Wave Detail: N 5 ft at 4 seconds and E
2 ft at 13 seconds. Rain likely. 
.FRI...NE winds 25 to 30 kt with gusts up to 35 kt. Seas 3 to
5 ft. Rain likely. 
.FRI NIGHT...N winds 25 to 30 kt with gusts up to 35 kt. Seas
4 to 6 ft. Rain likely. 
.SAT AND SAT NIGHT...NW winds 20 to 25 kt with gusts up to 30 kt.
Seas 4 to 6 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

ANZ232 Nantucket Sound

Expires:202611101900;;566073
FZUS51 KBOX 100604
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
104 AM EST Tue Nov 10 2026

Coastal waters from the Merrimack River MA to Watch Hill RI out
to 60 NM


ANZ232-101900-
Nantucket Sound-
104 AM EST Tue Nov 10 2026

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON...

.REST OF TONIGHT...NW winds 10 to 15 kt with gusts up to 25 kt.
Seas around 3 ft. Wave Detail: W 3 ft at 4 seconds and NE 1 foot
at 5 seconds. 
.TUE...W winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to
4 ft. Wave Detail: W 3 ft at 4 seconds and NE 1 foot at
4 seconds. 
.TUE NIGHT...W winds around 15 kt with gusts up to 25 kt. Seas
3 to 4 ft. Wave Detail: W 3 ft at 4 seconds and NE 1 foot at
4 seconds. 
.WED...NW winds 10 to 15 kt, becoming W 5 to 10 kt in the
afternoon. Gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: NW
2 ft at 5 seconds and E 1 foot at 10 seconds. 
.WED NIGHT...SW winds around 5 kt, becoming SE after midnight.
Seas around 2 ft in the evening, then 1 foot or less. Wave
Detail: N 1 foot at 3 seconds and W 1 foot at 4 seconds, becoming
NE 1 foot at 3 seconds and SW 1 foot at 5 seconds. 
.THU...E winds around 10 kt, increasing to 15 to 20 kt in the
afternoon. Seas 1 foot or less, then 2 to 3 ft in the afternoon.
Wave Detail: E 1 foot at 3 seconds and SW 1 foot at 5 seconds,
becoming E 2 ft at 3 seconds and SW 1 foot at 5 seconds. 
.THU NIGHT...E winds 20 to 25 kt, becoming NE 25 to 30 kt after
midnight. Seas 3 to 5 ft. Rain.
.FRI AND FRI NIGHT...N winds 25 to 30 kt with gusts up to 35 kt.
Seas 4 to 6 ft. Rain.
.SAT AND SAT NIGHT...NW winds 20 to 25 kt with gusts up to 30 kt.
Seas 3 to 5 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

ANZ233 Vinyard Sound

Expires:202611101900;;566074
FZUS51 KBOX 100604
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
104 AM EST Tue Nov 10 2026

Coastal waters from the Merrimack River MA to Watch Hill RI out
to 60 NM


ANZ233-101900-
Vineyard Sound-
104 AM EST Tue Nov 10 2026

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON...

.REST OF TONIGHT...NW winds 10 to 15 kt with gusts up to 25 kt.
Seas around 3 ft. Wave Detail: W 3 ft at 6 seconds and NE 1 foot
at 5 seconds. 
.TUE...W winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. Gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: W 3 ft
at 6 seconds and N 1 foot at 5 seconds. 
.TUE NIGHT...W winds around 15 kt with gusts up to 25 kt. Seas
3 to 4 ft. Wave Detail: SW 3 ft at 6 seconds and NE 1 foot at
6 seconds. 
.WED...NW winds 10 to 15 kt, becoming W 5 to 10 kt in the
afternoon. Gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: SW
3 ft at 6 seconds and NE 1 foot at 5 seconds. 
.WED NIGHT...W winds around 5 kt, becoming E after midnight. Seas
around 2 ft in the evening, then 1 foot or less. Wave Detail: SW
2 ft at 6 seconds and N 1 foot at 4 seconds, becoming SW 1 foot
at 5 seconds and NE 1 foot at 5 seconds. 
.THU...E winds around 10 kt, increasing to 15 to 20 kt in the
afternoon. Seas 2 to 3 ft. Wave Detail: E 2 ft at 3 seconds and
SW 1 foot at 5 seconds. A chance of rain in the afternoon. 
.THU NIGHT...E winds 20 to 25 kt, becoming NE 25 to 30 kt after
midnight. Seas 3 to 5 ft. Rain likely. 
.FRI AND FRI NIGHT...NE winds 25 to 30 kt, becoming N 20 to
25 kt. Seas 3 to 5 ft. Rain.
.SAT...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to
5 ft. A chance of rain. 
.SAT NIGHT...NW winds 20 to 25 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

ANZ234 Buzzards Bay

Expires:202611101900;;566075
FZUS51 KBOX 100604
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
104 AM EST Tue Nov 10 2026

Coastal waters from the Merrimack River MA to Watch Hill RI out
to 60 NM


ANZ234-101900-
Buzzards Bay-
104 AM EST Tue Nov 10 2026

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON...

.REST OF TONIGHT...W winds 10 to 15 kt with gusts up to 25 kt.
Seas around 3 ft. Wave Detail: W 2 ft at 6 seconds and NE 1 foot
at 5 seconds. 
.TUE...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
4 ft. Wave Detail: SW 3 ft at 5 seconds and N 1 foot at
5 seconds. 
.TUE NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas
2 to 4 ft. Wave Detail: SW 3 ft at 6 seconds and NE 1 foot at
6 seconds. 
.WED...W winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 3 ft.
Wave Detail: W 2 ft at 6 seconds and NE 1 foot at 5 seconds. 
.WED NIGHT AND THU...E winds 15 to 20 kt. Seas 2 to 3 ft. Wave
Detail: E 2 ft at 3 seconds and SW 1 foot at 6 seconds. 
.THU NIGHT...E winds 15 to 20 kt, becoming NE 20 to 25 kt after
midnight. Gusts up to 30 kt. Seas 3 to 5 ft. Wave Detail: NE 3 ft
at 4 seconds and S 1 foot at 5 seconds. Rain likely. 
.FRI AND FRI NIGHT...N winds 20 to 25 kt with gusts up to 30 kt.
Seas 3 to 5 ft. Rain.
.SAT...NW winds 20 to 25 kt. Seas around 3 ft. A chance of rain. 
.SAT NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas
around 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.

$$


		              	
X

ANZ235 Rhode Island Sound

Expires:202611101900;;566076
FZUS51 KBOX 100604
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
104 AM EST Tue Nov 10 2026

Coastal waters from the Merrimack River MA to Watch Hill RI out
to 60 NM


ANZ235-101900-
Rhode Island Sound-
104 AM EST Tue Nov 10 2026

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON...

.REST OF TONIGHT...NW winds 15 to 20 kt with gusts up to 25 kt.
Seas 3 to 4 ft. Wave Detail: W 4 ft at 6 seconds and SE 2 ft at
11 seconds. 
.TUE...W 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: SW
4 ft at 5 seconds and SE 2 ft at 11 seconds. 
.TUE NIGHT...W winds around 15 kt with gusts up to 25 kt. Seas
3 to 4 ft. Wave Detail: W 4 ft at 6 seconds and SE 2 ft at
11 seconds. 
.WED...NW winds 10 to 15 kt, becoming W 5 to 10 kt in the
afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: W 4 ft
at 6 seconds and NE 1 foot at 5 seconds. 
.WED NIGHT...W winds 5 to 10 kt, becoming E after midnight. Seas
around 2 ft. Wave Detail: SW 2 ft at 5 seconds and N 1 foot at
3 seconds. 
.THU...E winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. Seas 2 to 3 ft. Wave Detail: E 3 ft at 4 seconds and
SW 1 foot at 5 seconds. A chance of rain in the afternoon. 
.THU NIGHT...E winds 20 to 25 kt, becoming NE 25 to 30 kt after
midnight. Seas 3 to 4 ft, building to 4 to 6 ft after midnight.
Rain likely. 
.FRI AND FRI NIGHT...N winds 25 to 30 kt with gusts up to 35 kt.
Seas 5 to 7 ft. Rain.
.SAT...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to
6 ft. A chance of rain. 
.SAT NIGHT...NW winds 20 to 25 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

ANZ236 Narragansett Bay

Expires:202611101900;;566079
FZUS51 KBOX 100604
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
104 AM EST Tue Nov 10 2026

Coastal waters from the Merrimack River MA to Watch Hill RI out
to 60 NM


ANZ236-101900-
Narragansett Bay-
104 AM EST Tue Nov 10 2026

.REST OF TONIGHT...W winds around 10 kt with gusts up to 25 kt.
Waves 2 to 3 ft. 
.TUE...W winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to
3 ft. 
.TUE NIGHT...W winds around 10 kt with gusts up to 20 kt. Waves
2 to 3 ft. 
.WED...W winds 5 to 10 kt. Gusts up to 20 kt in the morning.
Waves around 2 ft. 
.WED NIGHT AND THU...E winds 10 to 15 kt with gusts up to 20 kt.
Waves 2 to 3 ft. 
.THU NIGHT...NE winds 15 to 20 kt, increasing to 20 to 25 kt
after midnight. Gusts up to 30 kt. Waves 2 to 3 ft. Rain likely. 
.FRI...N winds 20 to 25 kt with gusts up to 30 kt. Waves around
3 ft. Rain likely. 
.FRI NIGHT AND SAT...N winds 20 to 25 kt, becoming NW 15 to
20 kt. Gusts up to 30 kt. Waves 2 to 3 ft. A chance of rain. 
.SAT NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Waves
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.

$$


			
X

ANZ237 Block Island Sound

Expires:202611101900;;566077
FZUS51 KBOX 100604
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
104 AM EST Tue Nov 10 2026

Coastal waters from the Merrimack River MA to Watch Hill RI out
to 60 NM


ANZ237-101900-
Block Island Sound-
104 AM EST Tue Nov 10 2026

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON...

.REST OF TONIGHT...NW winds 10 to 15 kt with gusts up to 25 kt.
Seas 3 to 4 ft. Wave Detail: W 3 ft at 4 seconds and SE 2 ft at
11 seconds. 
.TUE...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
4 ft. Wave Detail: W 3 ft at 4 seconds and SE 2 ft at 11 seconds.
.TUE NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas
3 to 4 ft. Wave Detail: W 3 ft at 5 seconds and SE 2 ft at
11 seconds. 
.WED...NW winds 10 to 15 kt, becoming W 5 to 10 kt in the
afternoon. Gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: W 3 ft
at 5 seconds and NE 1 foot at 5 seconds. 
.WED NIGHT...W winds around 5 kt, becoming E after midnight. Seas
around 2 ft in the evening, then 1 foot or less. Wave Detail: SW
2 ft at 5 seconds and N 1 foot at 2 seconds, becoming E 1 foot at
2 seconds and S 1 foot at 5 seconds. 
.THU...E winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: E 3 ft
at 4 seconds and S 1 foot at 5 seconds. A chance of rain in the
afternoon. 
.THU NIGHT...NE winds 20 to 25 kt, increasing to 25 to 30 kt
after midnight. Seas 3 to 4 ft, building to 4 to 6 ft after
midnight. Rain likely. 
.FRI AND FRI NIGHT...NE winds 25 to 30 kt, becoming N 20 to
25 kt. Seas 5 to 7 ft. Rain likely. 
.SAT...NW winds 20 to 25 kt. Seas 4 to 6 ft. A chance of rain. 
.SAT NIGHT...NW winds 15 to 20 kt with gusts up to 25 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

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

Expires:202611101900;;566067
FZUS51 KBOX 100604
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
104 AM EST Tue Nov 10 2026

Coastal waters from the Merrimack River MA to Watch Hill RI out
to 60 NM


ANZ250-101900-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
104 AM EST Tue Nov 10 2026

...SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY MORNING...

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

ANZ251 Massachusetts Bay and Ipswich Bay

Expires:202611101900;;566068
FZUS51 KBOX 100604
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
104 AM EST Tue Nov 10 2026

Coastal waters from the Merrimack River MA to Watch Hill RI out
to 60 NM


ANZ251-101900-
Massachusetts Bay and Ipswich Bay-
104 AM EST Tue Nov 10 2026

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM EST THIS MORNING...

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

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

 
Expires:202611101900;;566070
FZUS51 KBOX 100604
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
104 AM EST Tue Nov 10 2026

Coastal waters from the Merrimack River MA to Watch Hill RI out
to 60 NM


ANZ254-101900-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 NM-
104 AM EST Tue Nov 10 2026

...SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY MORNING...

.REST OF TONIGHT...NW winds 15 to 20 kt with gusts up to 25 kt.
Seas 3 to 5 ft. Wave Detail: N 4 ft at 5 seconds and SE 3 ft at
11 seconds. 
.TUE...W winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to
5 ft. Wave Detail: NW 4 ft at 6 seconds and SE 3 ft at
11 seconds. 
.TUE NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas
3 to 5 ft. Wave Detail: NW 4 ft at 6 seconds and SE 2 ft at
10 seconds. 
.WED...NW winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: N 4 ft
at 5 seconds and E 2 ft at 10 seconds. 
.WED NIGHT...SW winds 5 to 10 kt, becoming SE after midnight.
Seas 2 to 3 ft. Wave Detail: N 2 ft at 6 seconds and E 1 foot at
10 seconds. 
.THU...E winds around 10 kt, increasing to 15 to 20 kt in the
afternoon. Seas 2 to 3 ft. Wave Detail: E 2 ft at 4 seconds and W
1 foot at 5 seconds. 
.THU NIGHT...E winds 20 to 25 kt, becoming NE 25 to 30 kt after
midnight. Seas 2 to 4 ft, building to 5 to 7 ft after midnight.
Rain.
.FRI THROUGH SAT...N winds 25 to 30 kt. Seas 6 to 9 ft. Rain.
.SAT NIGHT...NW winds 20 to 25 kt with gusts up to 30 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:202611101900;;566071
FZUS51 KBOX 100604
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
104 AM EST Tue Nov 10 2026

Coastal waters from the Merrimack River MA to Watch Hill RI out
to 60 NM


ANZ255-101900-
Coastal Waters extending out to 25 NM South of Marthas Vineyard
and Nantucket-
104 AM EST Tue Nov 10 2026

...SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY MORNING...

.REST OF TONIGHT...NW winds 15 to 20 kt with gusts up to 25 kt.
Seas 4 to 6 ft. Wave Detail: W 5 ft at 7 seconds and SE 2 ft at
11 seconds. 
.TUE...W winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to
6 ft. Wave Detail: W 4 ft at 7 seconds and SE 2 ft at 11 seconds.
.TUE NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas
4 to 6 ft. Wave Detail: SW 5 ft at 6 seconds and SE 2 ft at
11 seconds. 
.WED...NW winds 15 to 20 kt, becoming W 10 to 15 kt in the
afternoon. Gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: W 5 ft
at 7 seconds and N 1 foot at 5 seconds. 
.WED NIGHT...SW winds around 5 kt, becoming SE after midnight.
Seas 2 to 3 ft. Wave Detail: SW 2 ft at 6 seconds and N 1 foot at
5 seconds. 
.THU...E winds 10 to 15 kt, increasing to 15 to 20 kt with gusts
up to 25 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: E 3 ft
at 4 seconds and SW 1 foot at 5 seconds. A chance of rain in the
afternoon. 
.THU NIGHT...NE winds 25 to 30 kt. Gusts up to 40 kt after
midnight. Seas 3 to 5 ft, building to 5 to 7 ft after midnight.
Rain.
.FRI AND FRI NIGHT...N winds 25 to 30 kt with gusts up to 40 kt.
Seas 6 to 9 ft. Rain.
.SAT...NW winds 25 to 30 kt. Seas 5 to 8 ft. Rain likely. 
.SAT NIGHT...NW winds 25 to 30 kt. Seas 5 to 8 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

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

Expires:202611101900;;566072
FZUS51 KBOX 100604
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
104 AM EST Tue Nov 10 2026

Coastal waters from the Merrimack River MA to Watch Hill RI out
to 60 NM


ANZ256-101900-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 NM South of Block Island-
104 AM EST Tue Nov 10 2026

...SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY MORNING...

.REST OF TONIGHT...NW winds 15 to 20 kt with gusts up to 25 kt.
Seas 4 to 6 ft. Wave Detail: N 5 ft at 6 seconds and SE 2 ft at
11 seconds. 
.TUE...W winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to
6 ft. Wave Detail: W 5 ft at 6 seconds and SE 2 ft at 11 seconds.
.TUE NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas
4 to 6 ft. Wave Detail: W 5 ft at 6 seconds and SE 2 ft at
11 seconds. 
.WED...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to
5 ft. Wave Detail: N 4 ft at 6 seconds and SE 2 ft at 10 seconds.
.WED NIGHT...SW winds 5 to 10 kt, becoming SE after midnight.
Seas 2 to 3 ft. Wave Detail: SW 2 ft at 5 seconds and N 1 foot at
3 seconds. 
.THU...E winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. Gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft
at 4 seconds and SW 1 foot at 5 seconds. A chance of rain in the
afternoon. 
.THU NIGHT...NE winds 25 to 30 kt with gusts up to 35 kt. Seas
4 to 6 ft, building to 5 to 8 ft after midnight. Rain.
.FRI AND FRI NIGHT...N winds 25 to 30 kt with gusts up to 40 kt.
Seas 7 to 10 ft. Rain.
.SAT...NW winds 25 to 30 kt. Seas 6 to 9 ft. A chance of rain. 
.SAT NIGHT...NW winds 25 to 30 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

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:202611101900;;566078
FZUS51 KBOX 100604
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
104 AM EST Tue Nov 10 2026

Coastal waters from the Merrimack River MA to Watch Hill RI out
to 60 NM


ANZ230-101900-
Boston Harbor-
104 AM EST Tue Nov 10 2026

.REST OF TONIGHT...W winds around 10 kt with gusts up to 20 kt.
Waves around 2 ft. 
.TUE...W winds around 10 kt with gusts up to 20 kt. Waves around
2 ft. 
.TUE NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Waves
around 2 ft. 
.WED...NW winds 5 to 10 kt with gusts up to 20 kt. Waves around
2 ft. 
.WED NIGHT...N winds around 5 kt. Waves 1 foot or less. 
.THU...NE winds 5 to 10 kt, becoming E 10 to 15 kt in the
afternoon. Waves 1 foot or less, then around 2 ft in the
afternoon. 
.THU NIGHT...E winds 15 to 20 kt, becoming NE 20 to 25 kt after
midnight. Gusts up to 30 kt. Waves 2 to 3 ft. A chance of rain in
the evening, then rain likely after midnight. 
.FRI...NE winds 25 to 30 kt. Waves 2 to 3 ft, except 4 to 6 ft at
the outer harbor entrance. Rain likely. 
.FRI NIGHT AND SAT...N winds 20 to 25 kt, becoming NW 15 to
20 kt. Waves 2 to 3 ft, except 3 to 5 ft at the outer harbor
entrance. A chance of rain. 
.SAT NIGHT...NW winds 15 to 20 kt. Waves around 2 ft, except 3 to
5 ft at the outer harbor entrance.  

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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