Sandy Bay Weather Center
Weather Center


X

ANZ230 Boston Harbor

Expires:202607082100;;610737
FZUS51 KBOX 080805
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
404 AM EDT Wed Jul 8 2026

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


ANZ230-082100-
Boston Harbor-
404 AM EDT Wed Jul 8 2026

.TODAY...N winds 10 to 15 kt, becoming E around 5 kt this
afternoon. Waves around 2 ft this morning, then 1 foot or less. 
.TONIGHT...S winds 5 to 10 kt, becoming SW after midnight. Waves
1 foot or less. 
.THU...SW winds 5 to 10 kt. Waves 1 foot or less, then around
2 ft in the afternoon. 
.THU NIGHT...SW winds 10 to 15 kt. Waves around 2 ft. 
.FRI...W winds 5 to 10 kt. Waves 1 foot or less. Showers with a
chance of tstms in the afternoon. 
.FRI NIGHT...NW winds 5 to 10 kt. Waves 1 foot or less. Showers
likely with a chance of tstms in the evening. 
.SAT THROUGH SUN NIGHT...S winds 5 to 10 kt. Waves 1 foot or
less.  

Winds and waves higher in and near tstms.

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:202607082100;;610728
FZUS51 KBOX 080805
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
404 AM EDT Wed Jul 8 2026

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


ANZ231-082100-
Cape Cod Bay-
404 AM EDT Wed Jul 8 2026

.TODAY...N winds 15 to 20 kt, diminishing to 10 to 15 kt this
afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: N 4 ft
at 5 seconds and E 3 ft at 9 seconds. 
.TONIGHT...S winds 5 to 10 kt, becoming SW after midnight. Seas
around 2 ft. Wave Detail: NE 2 ft at 4 seconds and E 2 ft at
7 seconds. 
.THU...SW winds 10 to 15 kt. Gusts up to 25 kt in the afternoon.
Seas 2 to 4 ft. Wave Detail: SW 2 ft at 3 seconds and NE 1 foot
at 4 seconds. 
.THU NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas
2 to 4 ft. Wave Detail: SW 2 ft at 3 seconds and SE 2 ft at
10 seconds. 
.FRI...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft
at 11 seconds and SW 1 foot at 2 seconds. A chance of showers in
the afternoon. 
.FRI NIGHT...W winds around 5 kt, becoming NW after midnight.
Seas 1 foot or less. Wave Detail: NW 1 foot at 3 seconds and S
1 foot at 6 seconds. A chance of showers in the evening. 
.SAT THROUGH SUN NIGHT...S winds 5 to 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.

$$


	        
X

ANZ232 Nantucket Sound

Expires:202607082100;;610732
FZUS51 KBOX 080805
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
404 AM EDT Wed Jul 8 2026

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


ANZ232-082100-
Nantucket Sound-
404 AM EDT Wed Jul 8 2026

.TODAY...N winds 20 to 25 kt, diminishing to 15 to 20 kt this
afternoon. Gusts up to 30 kt. Seas 2 to 4 ft. Wave Detail: NE
4 ft at 4 seconds and E 3 ft at 7 seconds. 
.TONIGHT...W winds 5 to 10 kt, increasing to 10 to 15 kt after
midnight. Seas 2 to 3 ft. Wave Detail: W 2 ft at 3 seconds and E
2 ft at 8 seconds. 
.THU...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Wave Detail: SW 3 ft at 4 seconds and E 2 ft at 8 seconds. 
.THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and SE 2 ft at
7 seconds. 
.FRI...SW winds around 10 kt. Seas around 2 ft. Wave Detail: SW
2 ft at 3 seconds and SE 1 foot at 7 seconds. 
.FRI NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas
around 2 ft. Wave Detail: W 2 ft at 3 seconds and NE 2 ft at
4 seconds. A chance of showers in the evening. 
.SAT THROUGH SUN NIGHT...S winds 5 to 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.

$$


	                	
X

ANZ233 Vinyard Sound

Expires:202607082100;;610733
FZUS51 KBOX 080805
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
404 AM EDT Wed Jul 8 2026

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


ANZ233-082100-
Vineyard Sound-
404 AM EDT Wed Jul 8 2026

.TODAY...N winds 15 to 20 kt, diminishing to 10 to 15 kt this
afternoon. Gusts up to 25 kt. Seas 3 to 4 ft, subsiding to 2 ft
this afternoon. Wave Detail: SE 4 ft at 8 seconds and NE 3 ft at
4 seconds, becoming NE 2 ft at 4 seconds and SE 2 ft at
8 seconds. 
.TONIGHT...SW winds 5 to 10 kt, becoming W 10 to 15 kt after
midnight. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and
NE 1 foot at 4 seconds. 
.THU...SW 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: SW
3 ft at 6 seconds and E 1 foot at 4 seconds. 
.THU NIGHT...SW winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. Gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail:
SW 3 ft at 5 seconds and SE 2 ft at 7 seconds. 
.FRI...SW winds around 10 kt. Seas around 2 ft. Wave Detail: S
2 ft at 5 seconds and S 2 ft at 8 seconds. A chance of showers in
the afternoon. 
.FRI NIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas
around 2 ft. Wave Detail: NE 2 ft at 4 seconds and SW 2 ft at
6 seconds. A chance of showers in the evening. 
.SAT THROUGH SUN NIGHT...S winds 5 to 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.

$$


		                	
X

ANZ234 Buzzards Bay

Expires:202607082100;;610734
FZUS51 KBOX 080805
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
404 AM EDT Wed Jul 8 2026

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


ANZ234-082100-
Buzzards Bay-
404 AM EDT Wed Jul 8 2026

.TODAY...N winds 15 to 20 kt, becoming NE 10 to 15 kt this
afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: N 4 ft
at 6 seconds and SE 3 ft at 9 seconds. 
.TONIGHT...SW winds 5 to 10 kt. Seas 1 foot or less, then around
2 ft after midnight. Wave Detail: W 1 foot at 2 seconds and NE
1 foot at 3 seconds, becoming SW 1 foot at 3 seconds and NE
1 foot at 4 seconds. 
.THU...SW winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. Gusts up to 25 kt. Seas around 2 ft, building to 3 to
4 ft in the afternoon. Wave Detail: SW 2 ft at 4 seconds and NE
1 foot at 4 seconds, becoming SW 3 ft at 4 seconds and E 1 foot
at 4 seconds. 
.THU NIGHT...SW winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail:
SE 3 ft at 5 seconds and E 1 foot at 8 seconds. 
.FRI...SW winds around 10 kt. Seas around 2 ft. Wave Detail: SW
2 ft at 5 seconds and S 2 ft at 7 seconds. A chance of showers in
the afternoon. 
.FRI NIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas
around 2 ft. Wave Detail: SW 2 ft at 4 seconds and NE 2 ft at
4 seconds. A chance of showers in the evening. 
.SAT THROUGH SUN NIGHT...SW winds 5 to 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.

$$


		              	
X

ANZ235 Rhode Island Sound

Expires:202607082100;;610735
FZUS51 KBOX 080805
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
404 AM EDT Wed Jul 8 2026

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


ANZ235-082100-
Rhode Island Sound-
404 AM EDT Wed Jul 8 2026

.TODAY...N winds 15 to 20 kt with gusts up to 25 kt, becoming NW
5 to 10 kt this afternoon. Seas 2 to 4 ft. Wave Detail: N 4 ft at
5 seconds and NE 3 ft at 4 seconds. 
.TONIGHT...SW winds 5 to 10 kt, becoming W 10 to 15 kt after
midnight. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 3 seconds and
SE 2 ft at 8 seconds. 
.THU...SW 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: S 3 ft
at 6 seconds and NE 1 foot at 4 seconds. 
.THU NIGHT...SW winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. Seas 2 to 3 ft. Wave Detail: S 3 ft at 5 seconds
and SW 3 ft at 5 seconds. 
.FRI...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft
at 5 seconds and S 2 ft at 6 seconds. A chance of showers in the
afternoon. 
.FRI NIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas
2 to 3 ft. Wave Detail: S 3 ft at 7 seconds and SW 2 ft at
4 seconds. A chance of showers in the evening. 
.SAT THROUGH SUN NIGHT...SW winds 5 to 10 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.

$$


		
X

ANZ236 Narragansett Bay

Expires:202607082100;;610738
FZUS51 KBOX 080805
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
404 AM EDT Wed Jul 8 2026

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


ANZ236-082100-
Narragansett Bay-
404 AM EDT Wed Jul 8 2026

.TODAY...N winds 10 to 15 kt with gusts up to 20 kt, becoming W
5 to 10 kt this afternoon. Waves around 2 ft. 
.TONIGHT...SW winds 5 to 10 kt. Waves around 2 ft. 
.THU...SW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Waves 2 to 3 ft. 
.THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. Waves 2 to 3 ft. 
.FRI...SW winds 5 to 10 kt. Waves around 2 ft. A chance of
showers in the afternoon. 
.FRI NIGHT...NW winds 5 to 10 kt, becoming N after midnight.
Waves around 2 ft. 
.SAT THROUGH SUN NIGHT...SW winds 5 to 10 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

ANZ237 Block Island Sound

Expires:202607082100;;610736
FZUS51 KBOX 080805
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
404 AM EDT Wed Jul 8 2026

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


ANZ237-082100-
Block Island Sound-
404 AM EDT Wed Jul 8 2026

.TODAY...N winds 10 to 15 kt with gusts up to 20 kt, becoming W
5 to 10 kt this afternoon. Seas 2 to 3 ft. Wave Detail: E 3 ft at
6 seconds and NW 3 ft at 7 seconds. 
.TONIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S
2 ft at 8 seconds and SW 1 foot at 2 seconds. 
.THU...SW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas 2 to 3 ft. Wave Detail: SW 2 ft at 5 seconds and E 2 ft at
8 seconds. 
.THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave
Detail: SW 2 ft at 4 seconds and SE 2 ft at 8 seconds. 
.FRI...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE
2 ft at 7 seconds and W 1 foot at 3 seconds. A chance of showers
in the afternoon. 
.FRI NIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas
around 2 ft. Wave Detail: SE 2 ft at 7 seconds and SE 1 foot at
3 seconds. A chance of showers in the evening. 
.SAT THROUGH SUN NIGHT...S winds 5 to 10 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.

$$


			
X

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

Expires:202607082100;;610726
FZUS51 KBOX 080805
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
404 AM EDT Wed Jul 8 2026

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


ANZ250-082100-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
404 AM EDT Wed Jul 8 2026

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

.TODAY...N winds 15 to 20 kt with gusts up to 30 kt, becoming NE
10 to 15 kt with gusts up to 20 kt this afternoon. Seas 4 to
5 ft. Wave Detail: E 5 ft at 7 seconds and NW 1 foot at
4 seconds. 
.TONIGHT...S winds 5 to 10 kt, becoming SW after midnight. Seas
3 to 4 ft. Wave Detail: E 4 ft at 8 seconds and NE 2 ft at
5 seconds. 
.THU...SW winds 10 to 15 kt. Gusts up to 25 kt in the afternoon.
Seas 3 to 4 ft. Wave Detail: E 4 ft at 8 seconds and SW 2 ft at
3 seconds. 
.THU NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas
3 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and SE 3 ft at
7 seconds. 
.FRI...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft
at 5 seconds and E 2 ft at 8 seconds. A chance of showers in the
afternoon. 
.FRI NIGHT...W winds around 5 kt, becoming N after midnight. Seas
around 2 ft. Wave Detail: N 2 ft at 3 seconds and SE 2 ft at
7 seconds. A chance of showers in the evening. 
.SAT THROUGH SUN NIGHT...S winds 5 to 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.

$$


	
X

ANZ251 Massachusetts Bay and Ipswich Bay

Expires:202607082100;;610727
FZUS51 KBOX 080805
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
404 AM EDT Wed Jul 8 2026

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


ANZ251-082100-
Massachusetts Bay and Ipswich Bay-
404 AM EDT Wed Jul 8 2026

.TODAY...N winds 15 to 20 kt with gusts up to 25 kt, becoming E
5 to 10 kt this afternoon. Seas 2 to 4 ft. Wave Detail: NE 4 ft
at 7 seconds and NW 3 ft at 4 seconds. 
.TONIGHT...S winds 5 to 10 kt, becoming SW after midnight. Seas
2 to 3 ft. Wave Detail: E 3 ft at 8 seconds and N 2 ft at
4 seconds. 
.THU...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: E 3 ft
at 8 seconds and SE 2 ft at 9 seconds. 
.THU NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds and S
2 ft at 3 seconds. 
.FRI...W winds 5 to 10 kt, becoming S in the afternoon. Seas
around 2 ft. Wave Detail: S 2 ft at 4 seconds and E 2 ft at
8 seconds. Showers likely with a chance of tstms in the
afternoon. 
.FRI NIGHT...NW winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
SE 2 ft at 7 seconds and SW 1 foot at 2 seconds. A chance of
tstms in the evening. 
.SAT THROUGH SUN NIGHT...S winds 5 to 10 kt. Seas around 2 ft.  

Winds and seas higher in and near tstms.

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:202607082100;;610729
FZUS51 KBOX 080805
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
404 AM EDT Wed Jul 8 2026

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


ANZ254-082100-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 NM-
404 AM EDT Wed Jul 8 2026

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

.TODAY...N winds 20 to 25 kt, diminishing to 15 to 20 kt this
afternoon. Gusts up to 30 kt. Seas 4 to 6 ft. Wave Detail: E 6 ft
at 7 seconds and N 4 ft at 4 seconds. Patchy fog this morning. A
slight chance of showers this morning. 
.TONIGHT...W winds 5 to 10 kt, becoming SW 10 to 15 kt after
midnight. Seas 3 to 5 ft. Wave Detail: E 5 ft at 8 seconds and NE
2 ft at 4 seconds. Patchy fog. Vsby 1 to 3 NM, decreasing to 1 NM
or less after midnight. 
.THU...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to
4 ft. Wave Detail: E 4 ft at 8 seconds and SW 3 ft at 5 seconds. 
.THU NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas
3 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and S 3 ft at
7 seconds. A chance of showers after midnight. 
.FRI...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft
at 5 seconds and E 2 ft at 9 seconds. A chance of showers in the
morning. 
.FRI NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas
2 to 3 ft. Wave Detail: N 2 ft at 3 seconds and SE 2 ft at
7 seconds. A chance of showers.
.SAT THROUGH SUN NIGHT...S winds 5 to 10 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.

$$


		
X

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

Expires:202607082100;;610730
FZUS51 KBOX 080805
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
404 AM EDT Wed Jul 8 2026

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


ANZ255-082100-
Coastal Waters extending out to 25 NM South of Marthas Vineyard
and Nantucket-
404 AM EDT Wed Jul 8 2026

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

.TODAY...N winds 20 to 25 kt, diminishing to 15 to 20 kt this
afternoon. Seas 3 to 5 ft. Wave Detail: E 5 ft at 7 seconds and N
4 ft at 5 seconds. 
.TONIGHT...W winds 5 to 10 kt, increasing to 10 to 15 kt after
midnight. Seas 3 to 5 ft. Wave Detail: E 5 ft at 8 seconds and W
2 ft at 3 seconds. Patchy fog in the evening with vsby 1 to 3 NM.
.THU...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
4 ft. Wave Detail: SW 3 ft at 5 seconds and E 3 ft at 8 seconds.
Patchy fog in the morning. 
.THU NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 6 seconds and E
3 ft at 8 seconds. A chance of showers after midnight. 
.FRI...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft
at 6 seconds and E 2 ft at 8 seconds. A chance of showers in the
morning. 
.FRI NIGHT...W winds 10 to 15 kt, becoming NW 5 to 10 kt after
midnight. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 6 seconds and
NE 2 ft at 4 seconds. A chance of showers. 
.SAT THROUGH SUN...NE winds 5 to 10 kt. Seas 2 to 4 ft. 
.SUN NIGHT...S winds around 5 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.

$$


		
X

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

Expires:202607082100;;610731
FZUS51 KBOX 080805
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
404 AM EDT Wed Jul 8 2026

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


ANZ256-082100-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 NM South of Block Island-
404 AM EDT Wed Jul 8 2026

.TODAY...N winds 15 to 20 kt, becoming NW 10 to 15 kt this
afternoon. Gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: N 5 ft
at 5 seconds and N 4 ft at 5 seconds. 
.TONIGHT...SW winds 5 to 10 kt, increasing to 10 to 15 kt after
midnight. Seas 3 to 4 ft. Wave Detail: E 3 ft at 8 seconds and W
2 ft at 3 seconds. 
.THU...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
4 ft. Wave Detail: SW 3 ft at 5 seconds and E 3 ft at 8 seconds. 
.THU NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and SE
2 ft at 7 seconds. A chance of showers after midnight. 
.FRI...SW winds 10 to 15 kt. Seas around 3 ft. Wave Detail: S
3 ft at 5 seconds and E 2 ft at 8 seconds. 
.FRI NIGHT...W winds 10 to 15 kt, becoming N 5 to 10 kt after
midnight. Seas 2 to 3 ft. Wave Detail: S 3 ft at 4 seconds and E
1 foot at 8 seconds. 
.SAT AND SAT NIGHT...NE winds 5 to 10 kt. Seas 2 to 4 ft. 
.SUN AND SUN NIGHT...NE winds 5 to 10 kt, becoming S. 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.

$$


		
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:202607082100;;610737
FZUS51 KBOX 080805
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
404 AM EDT Wed Jul 8 2026

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


ANZ230-082100-
Boston Harbor-
404 AM EDT Wed Jul 8 2026

.TODAY...N winds 10 to 15 kt, becoming E around 5 kt this
afternoon. Waves around 2 ft this morning, then 1 foot or less. 
.TONIGHT...S winds 5 to 10 kt, becoming SW after midnight. Waves
1 foot or less. 
.THU...SW winds 5 to 10 kt. Waves 1 foot or less, then around
2 ft in the afternoon. 
.THU NIGHT...SW winds 10 to 15 kt. Waves around 2 ft. 
.FRI...W winds 5 to 10 kt. Waves 1 foot or less. Showers with a
chance of tstms in the afternoon. 
.FRI NIGHT...NW winds 5 to 10 kt. Waves 1 foot or less. Showers
likely with a chance of tstms in the evening. 
.SAT THROUGH SUN NIGHT...S winds 5 to 10 kt. Waves 1 foot or
less.  

Winds and waves higher in and near tstms.

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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