FZUS51 KBOX 261405

CWFBOX



Coastal Waters Forecast for Massachusetts and Rhode Island

National Weather Service Boston/Norton MA

1005 AM EDT Thu Jun 26 2025



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

to 25 NM



ANZ200-270300-

1005 AM EDT Thu Jun 26 2025



.Synopsis for Massachusetts and Rhode Island coastal waters...

Cold front remains south of the southern waters late this week and 

will be a source for shower activity. An area of high pressure exits 

eastern Canada late this week and brings gusty northeasterly flow 

into early this weekend.



$$



ANZ250-270300-

Coastal waters east of Ipswich Bay and the Stellwagen Bank

National Marine Sanctuary-

1005 AM EDT Thu Jun 26 2025



.THIS AFTERNOON...NE winds 10 to 15 kt with gusts up to 20 kt.

Seas 3 to 4 ft. Wave Detail: NE 3 ft at 5 seconds and SE 1 foot

at 10 seconds. 

.TONIGHT...E winds around 10 kt. Seas 2 to 3 ft. Wave Detail: NE

3 ft at 5 seconds and SE 1 foot at 10 seconds. 

.FRI...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to

3 ft. Wave Detail: E 2 ft at 5 seconds and SE 2 ft at 10 seconds.

.FRI NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas

2 to 4 ft. Wave Detail: SE 3 ft at 9 seconds and E 2 ft at

5 seconds. A chance of showers in the evening, then showers

likely after midnight. 

.SAT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to

5 ft. Wave Detail: E 4 ft at 6 seconds and SE 2 ft at 9 seconds.

Showers likely. 

.SAT NIGHT...NE winds around 10 kt. Seas 4 to 5 ft. Wave Detail:

E 5 ft at 7 seconds and SE 2 ft at 8 seconds. Showers likely. 

.SUN...NE winds 5 to 10 kt. Seas 4 to 5 ft. A chance of showers. 

.SUN NIGHT AND MON...E winds 5 to 10 kt. Seas 3 to 5 ft. 

.MON NIGHT...S winds around 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.



$$



ANZ251-270300-

Massachusetts Bay and Ipswich Bay-

1005 AM EDT Thu Jun 26 2025



.THIS AFTERNOON...NE winds 10 to 15 kt with gusts up to 20 kt.

Seas 2 to 3 ft. Wave Detail: NE 3 ft at 5 seconds and SE 1 foot

at 9 seconds. Isolated showers. 

.TONIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E

3 ft at 5 seconds and SE 1 foot at 10 seconds. 

.FRI...E winds 10 to 15 kt with gusts up to 20 kt. Seas around

2 ft. Wave Detail: E 2 ft at 5 seconds and SE 1 foot at

10 seconds. 

.FRI NIGHT...SE winds 10 to 15 kt. Seas 2 to 4 ft. Wave Detail:

SE 2 ft at 4 seconds and SE 1 foot at 10 seconds. A chance of

showers in the evening, then showers likely after midnight. 

.SAT...E winds 10 to 15 kt. Seas 3 to 5 ft. Wave Detail: E 3 ft

at 6 seconds and SE 2 ft at 9 seconds. Showers likely. 

.SAT NIGHT...NE winds 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: E

4 ft at 7 seconds and SE 1 foot at 3 seconds. Showers likely. 

.SUN...NE winds 5 to 10 kt. Seas 4 to 5 ft. A chance of showers. 

.SUN NIGHT...NE winds 5 to 10 kt. Seas 3 to 5 ft. 

.MON AND MON NIGHT...E winds 5 to 10 kt, becoming S. Seas 2 to

4 ft.  



Seas are reported as significant wave height, which is the

average of the highest third of the waves. Individual wave

heights may be more than twice the significant wave height.



$$



ANZ231-270300-

Cape Cod Bay-

1005 AM EDT Thu Jun 26 2025



.THIS AFTERNOON...NE winds 10 to 15 kt with gusts up to 20 kt.

Seas 2 to 3 ft. Wave Detail: N 2 ft at 4 seconds and SE 1 foot at

9 seconds. Isolated showers. 

.TONIGHT...E winds 10 to 15 kt. Seas around 2 ft. Wave Detail: NE

2 ft at 5 seconds and SE 1 foot at 10 seconds. 

.FRI...E winds 10 to 15 kt with gusts up to 20 kt. Seas around

2 ft. Wave Detail: E 2 ft at 3 seconds and SE 1 foot at

10 seconds. 

.FRI NIGHT...SE winds 10 to 15 kt. Gusts up to 20 kt in the

evening. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 3 seconds and SE

2 ft at 9 seconds. A chance of showers in the evening, then

showers likely after midnight. 

.SAT...SE winds around 10 kt. Seas 2 to 3 ft. Wave Detail: SE

2 ft at 8 seconds and SE 1 foot at 3 seconds. Showers likely. 

.SAT NIGHT...NE winds 5 to 10 kt, becoming N after midnight. Seas

2 to 3 ft. Wave Detail: SE 2 ft at 8 seconds and S 1 foot at

3 seconds. A chance of showers in the evening. Showers likely

after midnight. 

.SUN...NE winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. 

.SUN NIGHT THROUGH MON 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.



$$



ANZ254-270300-

Coastal waters from Provincetown MA to Chatham MA to Nantucket MA

out 20 nm-

1005 AM EDT Thu Jun 26 2025



.THIS AFTERNOON...NE winds 10 to 15 kt with gusts up to 20 kt.

Seas around 3 ft. Wave Detail: NE 3 ft at 4 seconds and SE 1 foot

at 10 seconds. Isolated showers. 

.TONIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to

3 ft. Wave Detail: NE 3 ft at 5 seconds and SE 1 foot at

10 seconds. 

.FRI...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to

4 ft. Wave Detail: E 3 ft at 5 seconds and SE 1 foot at

10 seconds. 

.FRI NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas

3 to 4 ft. Wave Detail: E 3 ft at 6 seconds and SE 3 ft at

9 seconds. A chance of showers in the evening, then showers

likely after midnight. 

.SAT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to

5 ft. Wave Detail: SE 4 ft at 8 seconds and E 2 ft at 5 seconds.

Showers likely in the morning. A chance of showers in the

afternoon. 

.SAT NIGHT...S winds around 10 kt, becoming W after midnight.

Seas 4 to 5 ft. Wave Detail: SE 5 ft at 7 seconds. A chance of

showers in the evening. Showers likely after midnight. 

.SUN...N winds 5 to 10 kt. Seas 4 to 5 ft. A chance of showers. 

.SUN NIGHT THROUGH MON NIGHT...S winds 5 to 10 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.



$$



ANZ255-270300-

Coastal Waters extending out to 25 nm South of Marthas Vineyard

and Nantucket-

1005 AM EDT Thu Jun 26 2025



.THIS AFTERNOON...NE winds around 15 kt with gusts up to 20 kt.

Seas around 3 ft. Wave Detail: NE 3 ft at 4 seconds and SE 1 foot

at 10 seconds. Scattered showers this morning. 

.TONIGHT...E winds 15 to 20 kt. Seas 3 to 4 ft. Wave Detail: E

3 ft at 4 seconds and SE 1 foot at 10 seconds. 

.FRI...E winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to

5 ft. Wave Detail: E 4 ft at 5 seconds and SE 1 foot at

10 seconds. 

.FRI NIGHT...E winds 15 to 20 kt, becoming SE 10 to 15 kt after

midnight. Seas 3 to 5 ft. Wave Detail: SE 4 ft at 8 seconds. A

chance of showers in the evening, then showers likely after

midnight. 

.SAT...S winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft

at 7 seconds and E 1 foot at 4 seconds. A chance of showers. 

.SAT NIGHT...S winds around 10 kt, becoming SW after midnight.

Seas 3 to 4 ft. Wave Detail: E 3 ft at 7 seconds and SW 2 ft at

4 seconds. A chance of showers in the evening. Showers likely

after midnight. 

.SUN...N winds around 10 kt. Seas 3 to 4 ft. A chance of showers.

.SUN NIGHT THROUGH MON NIGHT...SW winds 5 to 10 kt. Seas 2 to

4 ft.  



Seas are reported as significant wave height, which is the

average of the highest third of the waves. Individual wave

heights may be more than twice the significant wave height.



$$



ANZ256-270300-

Coastal Waters from Montauk NY to Marthas Vineyard extending out

to 20 nm South of Block Island-

1005 AM EDT Thu Jun 26 2025



.THIS AFTERNOON...NE winds 15 to 20 kt with gusts up to 25 kt.

Seas 3 to 4 ft. Wave Detail: NE 4 ft at 5 seconds and SE 1 foot

at 9 seconds. Isolated showers. 

.TONIGHT...E winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to

4 ft. Wave Detail: E 4 ft at 5 seconds and SE 1 foot at

10 seconds. 

.FRI...E winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to

5 ft. Wave Detail: E 5 ft at 5 seconds and SE 1 foot at

10 seconds. 

.FRI NIGHT...E winds 15 to 20 kt, becoming SE 10 to 15 kt after

midnight. Seas 3 to 5 ft. Wave Detail: SE 5 ft at 8 seconds. A

chance of showers. 

.SAT AND SAT NIGHT...S winds 10 to 15 kt. Seas 3 to 4 ft. Wave

Detail: SE 4 ft at 7 seconds and S 2 ft at 4 seconds. A chance of

showers. 

.SUN...NE winds around 10 kt. Seas 3 to 4 ft. Wave Detail: SW

2 ft at 5 seconds and E 2 ft at 7 seconds. A chance of showers. 

.SUN NIGHT AND MON...E winds 5 to 10 kt, becoming SE. Seas 2 to

4 ft. 

.MON NIGHT...SW winds around 10 kt. Seas 2 to 3 ft. A chance of

showers.  



Seas are reported as significant wave height, which is the

average of the highest third of the waves. Individual wave

heights may be more than twice the significant wave height.



$$



ANZ232-270300-

Nantucket Sound-

1005 AM EDT Thu Jun 26 2025



.THIS AFTERNOON...NE winds around 15 kt with gusts up to 20 kt.

Seas 2 to 3 ft. Wave Detail: E 2 ft at 4 seconds and SE 1 foot at

9 seconds. Isolated showers. 

.TONIGHT...E winds around 15 kt with gusts up to 20 kt. Seas 2 to

3 ft. Wave Detail: E 2 ft at 4 seconds and SE 1 foot at

10 seconds. 

.FRI...E winds 15 to 20 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft

at 4 seconds and SE 1 foot at 10 seconds. 

.FRI NIGHT...SE winds 10 to 15 kt. Gusts up to 20 kt in the

evening. Seas 2 to 3 ft. Wave Detail: E 3 ft at 5 seconds and SE

2 ft at 8 seconds. A chance of showers in the evening, then

showers likely after midnight. 

.SAT...S winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft

at 4 seconds and SE 2 ft at 8 seconds. A chance of showers. 

.SAT NIGHT...S winds around 10 kt, becoming NW after midnight.

Seas 2 to 3 ft. Wave Detail: SE 2 ft at 7 seconds and S 1 foot at

3 seconds. A chance of showers in the evening. Showers likely

after midnight. 

.SUN...NE winds around 10 kt. Seas around 2 ft. A chance of

showers. 

.SUN NIGHT THROUGH MON 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.



$$



ANZ233-270300-

Vineyard Sound-

1005 AM EDT Thu Jun 26 2025



.THIS AFTERNOON...NE winds around 15 kt with gusts up to 20 kt.

Seas 2 to 3 ft. Wave Detail: NE 2 ft at 3 seconds and SE 1 foot

at 9 seconds. Isolated showers. 

.TONIGHT...E winds around 15 kt with gusts up to 20 kt. Seas

around 2 ft. Wave Detail: NE 2 ft at 3 seconds and SE 1 foot at

10 seconds. 

.FRI...E winds 15 to 20 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft

at 3 seconds and SE 1 foot at 9 seconds. 

.FRI NIGHT...SE winds 10 to 15 kt. Gusts up to 20 kt in the

evening. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 4 seconds and SE

2 ft at 8 seconds. A chance of showers in the evening, then

showers likely after midnight. 

.SAT...S winds 10 to 15 kt. Seas around 2 ft. Wave Detail: SE

2 ft at 8 seconds and SE 1 foot at 4 seconds. Showers likely in

the morning. A chance of showers in the afternoon. 

.SAT NIGHT...SE winds around 10 kt, becoming NE after midnight.

Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and SE 1 foot

at 4 seconds. A chance of showers in the evening. Showers likely

after midnight. 

.SUN...NE winds 5 to 10 kt. Seas around 2 ft. A chance of

showers. 

.SUN NIGHT THROUGH MON 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.



$$



ANZ234-270300-

Buzzards Bay-

1005 AM EDT Thu Jun 26 2025



.THIS AFTERNOON...NE winds around 15 kt with gusts up to 20 kt.

Seas 2 to 3 ft. Wave Detail: NE 2 ft at 3 seconds and SE 1 foot

at 9 seconds. Isolated showers. 

.TONIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas

around 2 ft. Wave Detail: NE 2 ft at 3 seconds and SE 1 foot at

10 seconds. 

.FRI...E winds 15 to 20 kt. Seas around 2 ft. Wave Detail: E 2 ft

at 3 seconds and SE 1 foot at 10 seconds. 

.FRI NIGHT...SE winds 10 to 15 kt. Gusts up to 20 kt in the

evening. Seas around 2 ft. Wave Detail: E 2 ft at 3 seconds and

SE 2 ft at 8 seconds. A chance of showers in the evening, then

showers likely after midnight. 

.SAT...SE winds around 10 kt. Seas around 2 ft. Wave Detail: SE

2 ft at 8 seconds and SE 1 foot at 3 seconds. Showers likely in

the morning. A chance of showers in the afternoon. 

.SAT NIGHT...E winds 5 to 10 kt, becoming NE after midnight. Seas

around 2 ft. Wave Detail: SE 2 ft at 8 seconds and SE 1 foot at

4 seconds. A chance of showers in the evening. Showers likely

after midnight. 

.SUN...NE winds 5 to 10 kt. Seas around 2 ft. A chance of

showers. 

.SUN NIGHT THROUGH MON 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.



$$



ANZ235-270300-

Rhode Island Sound-

1005 AM EDT Thu Jun 26 2025



.THIS AFTERNOON...NE winds around 15 kt with gusts up to 20 kt.

Seas 2 to 3 ft. Wave Detail: NE 3 ft at 4 seconds and SE 1 foot

at 10 seconds. Isolated showers. 

.TONIGHT...E winds 15 to 20 kt. Seas 2 to 3 ft. Wave Detail: E

3 ft at 5 seconds and SE 1 foot at 10 seconds. 

.FRI...E winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to

4 ft. Wave Detail: E 4 ft at 5 seconds and SE 1 foot at

10 seconds. 

.FRI NIGHT...E winds 15 to 20 kt, becoming SE 10 to 15 kt after

midnight. Seas 2 to 4 ft. Wave Detail: E 4 ft at 7 seconds. A

chance of showers in the evening, then showers likely after

midnight. 

.SAT...S winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft

at 8 seconds and SE 1 foot at 4 seconds. Showers likely in the

morning. A chance of showers in the afternoon. 

.SAT NIGHT...SE winds around 10 kt, becoming NE after midnight.

Seas 2 to 3 ft. Wave Detail: SE 3 ft at 6 seconds. Showers

likely. 

.SUN...NE winds around 10 kt. Seas 2 to 3 ft. A chance of

showers. 

.SUN NIGHT THROUGH MON 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.



$$



ANZ237-270300-

Block Island Sound-

1005 AM EDT Thu Jun 26 2025



.THIS AFTERNOON...NE winds around 15 kt with gusts up to 20 kt.

Seas 2 to 3 ft. Wave Detail: NE 3 ft at 4 seconds and SE 1 foot

at 9 seconds. Isolated showers. 

.TONIGHT...E winds around 15 kt with gusts up to 20 kt. Seas 2 to

3 ft. Wave Detail: E 3 ft at 5 seconds and SE 1 foot at

10 seconds. 

.FRI...E winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to

4 ft. Wave Detail: E 4 ft at 5 seconds and SE 1 foot at

10 seconds. 

.FRI NIGHT...SE winds 10 to 15 kt. Gusts up to 20 kt in the

evening. Seas 2 to 4 ft. Wave Detail: SE 4 ft at 7 seconds. A

chance of showers. 

.SAT...SE winds around 10 kt. Seas 2 to 3 ft. Wave Detail: SE

3 ft at 8 seconds and E 1 foot at 5 seconds. A chance of showers.

.SAT NIGHT...SE winds 5 to 10 kt, becoming E after midnight. Seas

2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds and SE 2 ft at

5 seconds. A chance of showers. 

.SUN...NE winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. 

.SUN NIGHT AND MON...E winds 5 to 10 kt, becoming SE. Seas 2 to

3 ft. 

.MON NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. A chance of

showers.  



Seas are reported as significant wave height, which is the

average of the highest third of the waves. Individual wave

heights may be more than twice the significant wave height.



$$



ANZ230-270300-

Boston Harbor-

1005 AM EDT Thu Jun 26 2025



.THIS AFTERNOON...NE winds 10 to 15 kt. Waves around 2 ft.

Isolated showers. 

.TONIGHT...E winds 5 to 10 kt. Waves 1 foot or less. 

.FRI...E winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.

Waves around 2 ft. 

.FRI NIGHT...SE winds 10 to 15 kt. Waves around 2 ft in the

evening, then 1 foot or less. A chance of showers in the evening,

then showers likely after midnight. 

.SAT AND SAT NIGHT...NE winds 5 to 10 kt. Waves 2 to 3 ft.

Showers likely. A chance of showers after midnight. 

.SUN...NE winds 5 to 10 kt. Waves 1 foot or less, except 2 to

4 ft at the outer harbor entrance. A chance of showers. 

.SUN NIGHT THROUGH MON NIGHT...S winds 5 to 10 kt. Waves 1 foot

or less, except 2 to 4 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.



$$



ANZ236-270300-

Narragansett Bay-

1005 AM EDT Thu Jun 26 2025



.THIS AFTERNOON...NE winds 10 to 15 kt with gusts up to 20 kt.

Waves around 2 ft. Isolated showers. 

.TONIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt in the

evening. Waves around 2 ft. 

.FRI...E winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to

3 ft. 

.FRI NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt,

diminishing to 5 to 10 kt after midnight. Waves 2 to 3 ft. A

chance of showers in the evening, then showers likely after

midnight. 

.SAT...SE winds 5 to 10 kt. Waves 2 to 3 ft. A chance of showers.

.SAT NIGHT...E winds 5 to 10 kt, becoming NE after midnight.

Waves 2 to 3 ft. A chance of showers. 

.SUN...NE winds 5 to 10 kt. Waves 2 to 3 ft. A chance of showers.

.SUN NIGHT THROUGH MON 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.



$$



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