ANZ230 Boston Harbor

Expires:202605130700;;450155
FZUS51 KBOX 121847
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
Issued by National Weather Service New York NY
247 PM EDT Tue May 12 2026

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


ANZ230-130700-
Boston Harbor-
247 PM EDT Tue May 12 2026

...SMALL CRAFT ADVISORY IN EFFECT FROM WEDNESDAY AFTERNOON
THROUGH WEDNESDAY EVENING...

.TONIGHT...S winds 5 to 10 kt, becoming SW after midnight. Waves
1 foot or less. 
.WED...SW winds 5 to 10 kt, becoming S 15 to 20 kt with gusts up
to 30 kt in the afternoon. Waves around 2 ft. 
.WED NIGHT...S winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. Gusts up to 25 kt. Waves around 2 ft. 
.THU...SE winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to
3 ft. Patchy fog. Showers.
.THU NIGHT AND FRI...NE winds 10 to 15 kt with gusts up to 20 kt.
Waves around 2 ft. Patchy fog. Showers.
.FRI NIGHT...NW winds 5 to 10 kt, becoming W after midnight.
Waves 1 foot or less. 
.SAT THROUGH SUN NIGHT...NW winds 10 to 15 kt with gusts up to
20 kt. Waves around 2 ft.  

$$


	

ANZ231 Cape Cod Bay

		
Expires:202605130700;;450146
FZUS51 KBOX 121847
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
Issued by National Weather Service New York NY
247 PM EDT Tue May 12 2026

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


ANZ231-130700-
Cape Cod Bay-
247 PM EDT Tue May 12 2026

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

.TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft this evening,
then 1 foot or less. 
.WED...S winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
3 ft. 
.WED NIGHT...S winds 10 to 15 kt with gusts up to 25 kt. Seas
around 3 ft. 
.THU...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Patchy fog. Showers.
.THU NIGHT...E winds 5 to 10 kt. Seas around 2 ft. Patchy fog.
Showers.
.FRI...NE winds 10 to 15 kt with gusts up to 20 kt. Seas around
2 ft. A chance of showers. Patchy fog in the morning. 
.FRI NIGHT...N winds 5 to 10 kt, becoming W after midnight. Seas
2 to 3 ft. 
.SAT AND SAT NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt.
Seas 2 to 4 ft. 
.SUN AND SUN NIGHT...W winds 5 to 10 kt. Seas around 2 ft.  

$$


	        

ANZ232 Nantucket Sound

Expires:202605130700;;450150
FZUS51 KBOX 121847
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
Issued by National Weather Service New York NY
247 PM EDT Tue May 12 2026

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


ANZ232-130700-
Nantucket Sound-
247 PM EDT Tue May 12 2026

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

.TONIGHT...SW winds 10 to 15 kt. Seas around 2 ft. 
.WED...SW winds 10 to 15 kt, becoming S 15 to 20 kt in the
afternoon. Gusts up to 25 kt. Seas 2 to 3 ft. 
.WED NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas
around 3 ft. 
.THU...SE winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Seas 2 to 3 ft. Patchy fog. Showers.
.THU NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Patchy fog.
Showers.
.FRI...N winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers. 
.FRI NIGHT...NW winds 10 to 15 kt, becoming W 5 to 10 kt after
midnight. Seas 2 to 3 ft. 
.SAT THROUGH SUN NIGHT...NW winds 15 to 20 kt with gusts up to
25 kt. Seas 2 to 3 ft.  

$$


	                	

ANZ233 Vinyard Sound

Expires:202605130700;;450151
FZUS51 KBOX 121847
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
Issued by National Weather Service New York NY
247 PM EDT Tue May 12 2026

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


ANZ233-130700-
Vineyard Sound-
247 PM EDT Tue May 12 2026

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

.TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt this evening.
Seas around 2 ft. 
.WED...SW winds 10 to 15 kt, becoming S 15 to 20 kt in the
afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. 
.WED NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas
around 3 ft. 
.THU...SE winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Seas 2 to 3 ft. Patchy fog. Showers.
.THU NIGHT...E winds 5 to 10 kt, becoming NE after midnight. Seas
around 2 ft. Patchy fog. Showers.
.FRI...N winds 5 to 10 kt, increasing to 10 to 15 kt in the
afternoon. Seas 2 to 3 ft. A chance of showers. 
.FRI NIGHT...NW winds 5 to 10 kt. Seas 2 to 3 ft. 
.SAT THROUGH SUN NIGHT...NW winds 15 to 20 kt with gusts up to
25 kt. Seas 2 to 3 ft.  

$$


		                	

ANZ234 Buzzards Bay

Expires:202605130700;;450152
FZUS51 KBOX 121847
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
Issued by National Weather Service New York NY
247 PM EDT Tue May 12 2026

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


ANZ234-130700-
Buzzards Bay-
247 PM EDT Tue May 12 2026

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

.TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt this evening.
Seas around 2 ft. 
.WED...SW winds 10 to 15 kt, becoming S 15 to 20 kt in the
afternoon. Gusts up to 30 kt. Seas 2 to 4 ft. 
.WED NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas
around 3 ft. 
.THU...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Patchy fog. Showers.
.THU NIGHT...E winds 5 to 10 kt, becoming NE after midnight. Seas
around 2 ft. Patchy fog. Showers.
.FRI...N winds 10 to 15 kt. Seas around 2 ft. A chance of
showers. 
.FRI NIGHT...NW winds 5 to 10 kt, becoming W after midnight. Seas
around 2 ft. 
.SAT AND SAT NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt.
Seas 2 to 4 ft. 
.SUN AND SUN NIGHT...W winds 10 to 15 kt with gusts up to 20 kt,
becoming NW. Seas around 2 ft.  

$$


		              	

ANZ235 Rhode Island Sound

Expires:202605130700;;450153
FZUS51 KBOX 121847
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
Issued by National Weather Service New York NY
247 PM EDT Tue May 12 2026

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


ANZ235-130700-
Rhode Island Sound-
247 PM EDT Tue May 12 2026

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

.TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt this evening.
Seas 2 to 3 ft. 
.WED...SW winds 10 to 15 kt, becoming S 15 to 20 kt in the
afternoon. Gusts up to 30 kt. Seas 2 to 4 ft. 
.WED NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas
3 to 4 ft. 
.THU...SE winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Seas around 3 ft. Patchy fog. Showers.
.THU NIGHT...E winds 5 to 10 kt, becoming NE after midnight. Seas
around 3 ft. Patchy fog. Showers.
.FRI...N winds 10 to 15 kt. Seas 3 to 4 ft. A chance of showers. 
.FRI NIGHT...NW winds 5 to 10 kt, becoming W after midnight. Seas
2 to 4 ft. 
.SAT THROUGH SUN NIGHT...NW winds 15 to 20 kt. Seas 2 to 4 ft.  

$$


		

ANZ236 Narragansett Bay

Expires:202605130700;;450156
FZUS51 KBOX 121847
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
Issued by National Weather Service New York NY
247 PM EDT Tue May 12 2026

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


ANZ236-130700-
Narragansett Bay-
247 PM EDT Tue May 12 2026

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

.TONIGHT...SW winds 10 to 15 kt, diminishing to 5 to 10 kt after
midnight. Waves around 2 ft. 
.WED...S winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. Gusts up to 30 kt. Waves 2 to 3 ft. 
.WED NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Waves
2 to 4 ft. A chance of showers after midnight. 
.THU...SE winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to
3 ft. Patchy fog. Showers.
.THU NIGHT...E winds 5 to 10 kt, becoming NE after midnight.
Waves 2 to 3 ft. Patchy fog. Showers.
.FRI...N winds 10 to 15 kt. Waves 2 to 3 ft. Patchy fog. Showers
likely. 
.FRI NIGHT...NW winds 5 to 10 kt, becoming W after midnight.
Waves 2 to 3 ft. 
.SAT THROUGH SUN NIGHT...NW winds 10 to 15 kt with gusts up to
20 kt. Waves 2 to 3 ft.  

$$


			

ANZ237 Block Island Sound

Expires:202605130700;;450154
FZUS51 KBOX 121847
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
Issued by National Weather Service New York NY
247 PM EDT Tue May 12 2026

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


ANZ237-130700-
Block Island Sound-
247 PM EDT Tue May 12 2026

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

.TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt this evening.
Seas 2 to 3 ft. 
.WED...S winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. Gusts up to 30 kt. Seas 2 to 4 ft. 
.WED NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas
3 to 4 ft. Patchy fog after midnight. A chance of showers after
midnight. 
.THU...SE winds 10 to 15 kt. Gusts up to 20 kt in the morning.
Seas 2 to 3 ft. Patchy fog. Showers.
.THU NIGHT...E winds 5 to 10 kt, becoming NE after midnight. Seas
2 to 3 ft. Showers, mainly in the evening. Patchy fog in the
evening. 
.FRI...N winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. 
.FRI NIGHT...NW winds 5 to 10 kt, becoming W after midnight. Seas
2 to 4 ft. 
.SAT THROUGH SUN NIGHT...NW winds 10 to 15 kt with gusts up to
20 kt. Seas 2 to 3 ft.  

$$


			

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

Expires:202605130700;;450144
FZUS51 KBOX 121847
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
Issued by National Weather Service New York NY
247 PM EDT Tue May 12 2026

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


ANZ250-130700-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
247 PM EDT Tue May 12 2026

...SMALL CRAFT ADVISORY IN EFFECT FROM WEDNESDAY AFTERNOON
THROUGH WEDNESDAY EVENING...

.TONIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. 
.WED...SW winds 5 to 10 kt, becoming S 15 to 20 kt in the
afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. 
.WED NIGHT...S winds 15 to 20 kt. Gusts up to 30 kt, decreasing
to 20 kt after midnight. Seas 3 to 4 ft. 
.THU...SE winds 10 to 15 kt with gusts up to 25 kt. Seas around
3 ft. Patchy fog. A chance of showers in the morning. Showers in
the afternoon. 
.THU NIGHT AND FRI...NE winds 10 to 15 kt with gusts up to 20 kt.
Seas 3 to 4 ft. Patchy fog. Showers.
.FRI NIGHT...N winds 5 to 10 kt, becoming W after midnight. Seas
3 to 4 ft. 
.SAT THROUGH SUN NIGHT...NW winds 15 to 20 kt with gusts up to
25 kt. Seas 2 to 4 ft.  

$$


	

ANZ251 Massachusetts Bay and Ipswich Bay

Expires:202605130700;;450145
FZUS51 KBOX 121847
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
Issued by National Weather Service New York NY
247 PM EDT Tue May 12 2026

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


ANZ251-130700-
Massachusetts Bay and Ipswich Bay-
247 PM EDT Tue May 12 2026

...SMALL CRAFT ADVISORY IN EFFECT FROM WEDNESDAY AFTERNOON
THROUGH WEDNESDAY EVENING...

.TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft. 
.WED...S winds 5 to 10 kt, increasing to 15 to 20 kt in the
afternoon. Gusts up to 25 kt. Seas 2 to 3 ft. 
.WED NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas
2 to 3 ft. 
.THU...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Patchy fog. Showers.
.THU NIGHT AND FRI...NE winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. Patchy fog. Showers.
.FRI NIGHT...NW winds 5 to 10 kt, becoming W after midnight. Seas
around 3 ft. 
.SAT THROUGH SUN NIGHT...NW winds 10 to 15 kt with gusts up to
20 kt. Seas 2 to 3 ft.  

$$


		

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

 
Expires:202605130700;;450147
FZUS51 KBOX 121847
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
Issued by National Weather Service New York NY
247 PM EDT Tue May 12 2026

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


ANZ254-130700-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 NM-
247 PM EDT Tue May 12 2026

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

.TONIGHT...SW winds 5 to 10 kt, increasing to 10 to 15 kt after
midnight. Seas 3 to 4 ft. 
.WED...S winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
4 ft. 
.WED NIGHT...S winds around 15 kt with gusts up to 25 kt. Seas
3 to 4 ft. 
.THU...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
4 ft. Patchy fog. A chance of showers in the morning. Showers in
the afternoon. 
.THU NIGHT...E winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 3 to 4 ft. Patchy fog. Showers.
.FRI...NE winds around 10 kt. Seas 3 to 5 ft. A chance of
showers. Patchy fog in the morning. 
.FRI NIGHT...NW winds around 10 kt. Seas 4 to 5 ft. 
.SAT THROUGH SUN NIGHT...NW winds 15 to 20 kt with gusts up to
25 kt. Seas 3 to 5 ft.  

$$


		

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

Expires:202605130700;;450148
FZUS51 KBOX 121847
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
Issued by National Weather Service New York NY
247 PM EDT Tue May 12 2026

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


ANZ255-130700-
Coastal Waters extending out to 25 NM South of Marthas Vineyard
and Nantucket-
247 PM EDT Tue May 12 2026

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

.TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt this evening.
Seas 2 to 4 ft. 
.WED...SW winds 10 to 15 kt, becoming S 15 to 20 kt in the
afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. 
.WED NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas
3 to 4 ft. 
.THU...SE winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Seas 3 to 4 ft. Patchy fog. A chance of showers in the
morning. Showers in the afternoon. 
.THU NIGHT...E winds 5 to 10 kt. Seas 3 to 5 ft. Patchy fog.
Showers.
.FRI...N winds 5 to 10 kt, increasing to 10 to 15 kt in the
afternoon. Seas 3 to 5 ft. A chance of showers. 
.FRI NIGHT...NW winds 10 to 15 kt. Seas 3 to 5 ft.
.SAT THROUGH SUN NIGHT...NW winds 15 to 20 kt with gusts up to
25 kt. Seas 3 to 5 ft.  

$$


		

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

Expires:202605130700;;450149
FZUS51 KBOX 121847
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
Issued by National Weather Service New York NY
247 PM EDT Tue May 12 2026

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


ANZ256-130700-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 NM South of Block Island-
247 PM EDT Tue May 12 2026

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

.TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt this evening.
Seas around 3 ft. 
.WED...S winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
4 ft. 
.WED NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas
3 to 5 ft. 
.THU...SE winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Seas 3 to 4 ft. Patchy fog. Showers.
.THU NIGHT...SE winds 5 to 10 kt, becoming N after midnight. Seas
around 4 ft. Showers, mainly in the evening. Patchy fog in the
evening. 
.FRI...N winds 10 to 15 kt. Seas 4 to 5 ft. A chance of showers. 
.FRI NIGHT...NW winds 10 to 15 kt, becoming W 5 to 10 kt after
midnight. Seas 3 to 5 ft. 
.SAT THROUGH SUN NIGHT...NW winds 15 to 20 kt with gusts up to
25 kt. Seas 3 to 5 ft.  

$$


		

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

 
Expires:202605130700;;450155
FZUS51 KBOX 121847
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
Issued by National Weather Service New York NY
247 PM EDT Tue May 12 2026

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


ANZ230-130700-
Boston Harbor-
247 PM EDT Tue May 12 2026

...SMALL CRAFT ADVISORY IN EFFECT FROM WEDNESDAY AFTERNOON
THROUGH WEDNESDAY EVENING...

.TONIGHT...S winds 5 to 10 kt, becoming SW after midnight. Waves
1 foot or less. 
.WED...SW winds 5 to 10 kt, becoming S 15 to 20 kt with gusts up
to 30 kt in the afternoon. Waves around 2 ft. 
.WED NIGHT...S winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. Gusts up to 25 kt. Waves around 2 ft. 
.THU...SE winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to
3 ft. Patchy fog. Showers.
.THU NIGHT AND FRI...NE winds 10 to 15 kt with gusts up to 20 kt.
Waves around 2 ft. Patchy fog. Showers.
.FRI NIGHT...NW winds 5 to 10 kt, becoming W after midnight.
Waves 1 foot or less. 
.SAT THROUGH SUN NIGHT...NW winds 10 to 15 kt with gusts up to
20 kt. Waves around 2 ft.  

$$