fzus51 kbox 301406
cwfbox
expires:202603310300;;539563

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1005 am edt mon mar 30 2026

coastal waters from the merrimack river ma to watch hill ri out
to 25 nm


anz231-310300-
cape cod bay-
1005 am edt mon mar 30 2026

...small craft advisory in effect through this evening...

.this afternoon...sw winds 20 to 25 kt with gusts up to 30 kt.
seas 2 to 3 ft. wave detail: s 3 ft at 5 seconds and e 1 foot at
8 seconds. a slight chance of rain. 
.tonight...sw winds 15 to 20 kt with gusts up to 30 kt,
diminishing to 10 to 15 kt with gusts up to 20 kt after midnight.
seas 2 to 3 ft. wave detail: sw 3 ft at 4 seconds and s 3 ft at
7 seconds. a chance of rain after midnight. 
.tue...sw winds 10 to 15 kt with gusts up to 20 kt. seas 1 foot
or less, then around 2 ft in the afternoon. wave detail: sw
1 foot at 3 seconds and s 1 foot at 7 seconds, becoming sw 2 ft
at 3 seconds and s 2 ft at 7 seconds. rain likely, mainly in the
morning. 
.tue night...sw winds 15 to 20 kt, increasing to 20 to 25 kt
after midnight. gusts up to 30 kt. seas 2 to 4 ft. wave detail:
sw 4 ft at 4 seconds and s 3 ft at 7 seconds. 
.wed...sw winds 20 to 25 kt with gusts up to 30 kt. seas 2 to
4 ft. wave detail: sw 4 ft at 4 seconds and s 3 ft at 7 seconds.
a chance of rain in the afternoon. 
.wed night...nw winds 10 to 15 kt, becoming ne after midnight.
gusts up to 20 kt. seas 2 to 3 ft. wave detail: s 3 ft at
8 seconds and w 2 ft at 4 seconds. rain likely. 
.thu through fri night...sw winds 15 to 20 kt. seas 2 to 3 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.

$$

fzus51 kbox 301406
cwfbox
expires:202603310300;;539567

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1005 am edt mon mar 30 2026

coastal waters from the merrimack river ma to watch hill ri out
to 25 nm


anz232-310300-
nantucket sound-
1005 am edt mon mar 30 2026

...small craft advisory in effect through late tonight...

.this afternoon...sw winds 20 to 25 kt with gusts up to 30 kt.
seas 4 to 6 ft. wave detail: sw 4 ft at 5 seconds and e 1 foot at
8 seconds. a slight chance of rain. 
.tonight...sw winds 20 to 25 kt, diminishing to 15 to 20 kt after
midnight. gusts up to 30 kt. seas 3 to 5 ft. wave detail: sw 4 ft
at 4 seconds and sw 3 ft at 8 seconds. a chance of rain after
midnight. 
.tue...sw winds 15 to 20 kt with gusts up to 25 kt. seas 2 to
4 ft. wave detail: sw 3 ft at 4 seconds and sw 2 ft at 8 seconds.
rain likely, mainly in the morning. 
.tue night...sw winds 20 to 25 kt, increasing to 25 to 30 kt
after midnight. seas 3 to 5 ft, building to 5 to 7 ft after
midnight. wave detail: sw 4 ft at 4 seconds and sw 3 ft at
8 seconds, becoming sw 5 ft at 5 seconds and sw 4 ft at
8 seconds. 
.wed...sw winds 25 to 30 kt, diminishing to 20 to 25 kt in the
afternoon. seas 5 to 7 ft. wave detail: sw 5 ft at 5 seconds and
sw 4 ft at 8 seconds. a chance of rain in the afternoon. 
.wed night...w winds 15 to 20 kt, becoming ne after midnight.
seas 3 to 5 ft. wave detail: w 3 ft at 4 seconds and sw 3 ft at
8 seconds. rain likely. 
.thu through fri night...sw winds 15 to 20 kt. seas 2 to 3 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.

$$

fzus51 kbox 301406
cwfbox
expires:202603310300;;539568

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1005 am edt mon mar 30 2026

coastal waters from the merrimack river ma to watch hill ri out
to 25 nm


anz233-310300-
vineyard sound-
1005 am edt mon mar 30 2026

...small craft advisory in effect through late tonight...

.this afternoon...sw winds 20 to 25 kt, increasing to 25 to
30 kt. seas 5 to 7 ft. wave detail: sw 7 ft at 7 seconds and sw
2 ft at 4 seconds. a slight chance of rain. 
.tonight...sw winds 20 to 25 kt, diminishing to 15 to 20 kt after
midnight. gusts up to 30 kt. seas 4 to 6 ft. wave detail: sw 6 ft
at 8 seconds and sw 2 ft at 4 seconds. a chance of rain after
midnight. 
.tue...sw winds 15 to 20 kt with gusts up to 25 kt. seas 3 to
5 ft. wave detail: sw 5 ft at 8 seconds and sw 2 ft at 4 seconds.
rain likely, mainly in the morning. 
.tue night...sw winds 25 to 30 kt with gusts up to 35 kt. seas
4 to 6 ft, building to 6 to 9 ft after midnight. wave detail: sw
6 ft at 8 seconds and sw 2 ft at 4 seconds, becoming sw 8 ft at
8 seconds and sw 3 ft at 4 seconds. 
.wed...sw winds 25 to 30 kt. seas 6 to 9 ft. wave detail: sw 8 ft
at 8 seconds and sw 3 ft at 4 seconds. a chance of rain in the
afternoon. 
.wed night...w winds 15 to 20 kt, becoming ne after midnight.
seas 4 to 6 ft. wave detail: sw 5 ft at 8 seconds and ne 2 ft at
4 seconds. rain likely. 
.thu through fri night...sw winds 15 to 20 kt with gusts up to
25 kt. seas 2 to 4 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.

$$

fzus51 kbox 301406
cwfbox
expires:202603310300;;539569

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1005 am edt mon mar 30 2026

coastal waters from the merrimack river ma to watch hill ri out
to 25 nm


anz234-310300-
buzzards bay-
1005 am edt mon mar 30 2026

...small craft advisory in effect through late tonight...

.this afternoon...sw winds 20 to 25 kt, increasing to 25 to
30 kt. seas 3 to 5 ft. wave detail: sw 5 ft at 7 seconds and sw
3 ft at 4 seconds. a slight chance of rain. 
.tonight...sw winds 20 to 25 kt, diminishing to 15 to 20 kt after
midnight. gusts up to 30 kt. seas 3 to 5 ft. wave detail: sw 5 ft
at 7 seconds and sw 3 ft at 4 seconds. a chance of rain after
midnight. 
.tue...sw winds 15 to 20 kt with gusts up to 25 kt. seas 2 to
4 ft. wave detail: sw 4 ft at 8 seconds and sw 3 ft at 4 seconds.
rain likely, mainly in the morning. 
.tue night...sw winds 20 to 25 kt, increasing to 25 to 30 kt
after midnight. seas 4 to 6 ft. wave detail: sw 6 ft at 8 seconds
and sw 4 ft at 4 seconds. 
.wed...sw winds 25 to 30 kt. seas 4 to 6 ft. wave detail: sw 6 ft
at 8 seconds and sw 3 ft at 4 seconds. a chance of rain in the
afternoon. 
.wed night...w winds 10 to 15 kt, becoming ne 15 to 20 kt after
midnight. seas 3 to 5 ft. wave detail: sw 4 ft at 8 seconds and w
2 ft at 4 seconds. rain likely. 
.thu through fri night...sw winds 15 to 20 kt with gusts up to
25 kt. seas 2 to 3 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.

$$

fzus51 kbox 301406
cwfbox
expires:202603310300;;539570

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1005 am edt mon mar 30 2026

coastal waters from the merrimack river ma to watch hill ri out
to 25 nm


anz235-310300-
rhode island sound-
1005 am edt mon mar 30 2026

...small craft advisory in effect through wednesday evening...

.this afternoon...sw winds 25 to 30 kt with gusts up to 35 kt.
seas 5 to 6 ft, building to 5 to 8 ft. wave detail: sw 6 ft at
7 seconds and sw 1 foot at 4 seconds, becoming sw 8 ft at
7 seconds and sw 2 ft at 4 seconds. a slight chance of rain. 
.tonight...sw winds 20 to 25 kt with gusts up to 30 kt. seas 5 to
7 ft. wave detail: sw 7 ft at 8 seconds and sw 2 ft at 4 seconds.
a chance of rain after midnight. 
.tue...sw winds 15 to 20 kt with gusts up to 25 kt. seas 4 to
6 ft. wave detail: s 6 ft at 8 seconds and sw 1 foot at
3 seconds. rain likely, mainly in the morning. 
.tue night...sw winds 25 to 30 kt with gusts up to 35 kt. seas
5 to 7 ft, building to 7 to 10 ft after midnight. wave detail: s
7 ft at 8 seconds and sw 1 foot at 4 seconds, becoming s 10 ft at
8 seconds and sw 2 ft at 4 seconds. 
.wed...sw winds 25 to 30 kt. seas 7 to 10 ft. wave detail: s
10 ft at 8 seconds and sw 2 ft at 5 seconds. a chance of rain in
the afternoon. 
.wed night...w winds 15 to 20 kt, becoming ne after midnight.
seas 5 to 7 ft. wave detail: s 7 ft at 8 seconds and ne 2 ft at
3 seconds. rain likely. 
.thu and thu night...ne winds 15 to 20 kt with gusts up to 25 kt.
seas 3 to 5 ft. a chance of rain. 
.fri and fri night...s winds 15 to 20 kt, becoming sw 20 to
25 kt. seas 2 to 4 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.

$$

fzus51 kbox 301406
cwfbox
expires:202603310300;;539573

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1005 am edt mon mar 30 2026

coastal waters from the merrimack river ma to watch hill ri out
to 25 nm


anz236-310300-
narragansett bay-
1005 am edt mon mar 30 2026

...small craft advisory in effect until 8 pm edt this evening...

.this afternoon...sw winds 20 to 25 kt with gusts up to 30 kt.
waves 2 to 4 ft. a slight chance of rain. 
.tonight...sw winds 15 to 20 kt, diminishing to 10 to 15 kt after
midnight. gusts up to 25 kt. waves 2 to 4 ft. a chance of rain
after midnight. 
.tue...sw winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. waves 2 to 4 ft. rain likely, mainly in the morning. 
.tue night...sw winds 15 to 20 kt, increasing to 20 to 25 kt
after midnight. gusts up to 30 kt. waves 3 to 5 ft. 
.wed...sw winds 20 to 25 kt with gusts up to 30 kt. waves 3 to
5 ft, except 5 to 7 ft at the bay entrance. a chance of rain in
the afternoon. 
.wed night...nw winds 10 to 15 kt, becoming ne after midnight.
gusts up to 20 kt. waves 3 to 5 ft. rain likely. 
.thu through fri night...sw winds 15 to 20 kt. waves 2 to 3 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.

$$

fzus51 kbox 301406
cwfbox
expires:202603310300;;539561

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1005 am edt mon mar 30 2026

coastal waters from the merrimack river ma to watch hill ri out
to 25 nm


anz250-310300-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
1005 am edt mon mar 30 2026

...small craft advisory in effect through this evening...

.this afternoon...sw winds 20 to 25 kt with gusts up to 30 kt.
seas 3 to 5 ft. wave detail: s 4 ft at 5 seconds and e 1 foot at
8 seconds. a slight chance of rain. 
.tonight...sw winds 15 to 20 kt, diminishing to 10 to 15 kt after
midnight. gusts up to 30 kt. seas 3 to 5 ft. wave detail: s 4 ft
at 6 seconds and e 1 foot at 8 seconds. a chance of rain after
midnight. 
.tue...s winds 10 to 15 kt. gusts up to 20 kt in the afternoon.
seas 2 to 3 ft. wave detail: sw 2 ft at 4 seconds and se 2 ft at
7 seconds. rain likely, mainly in the morning. 
.tue night...s winds 15 to 20 kt, becoming sw 20 to 25 kt after
midnight. gusts up to 30 kt. seas 2 to 4 ft, building to 4 to
6 ft after midnight. wave detail: s 3 ft at 5 seconds, becoming s
5 ft at 6 seconds and ne 2 ft at 6 seconds. a chance of rain
after midnight. 
.wed...sw winds 20 to 25 kt, diminishing to 15 to 20 kt in the
afternoon. gusts up to 30 kt. seas 5 to 7 ft. wave detail: s 5 ft
at 6 seconds and ne 2 ft at 6 seconds. a chance of rain. 
.wed night...nw winds 15 to 20 kt, becoming ne after midnight.
seas 3 to 5 ft. wave detail: n 3 ft at 4 seconds and se 3 ft at
7 seconds. a chance of rain. 
.thu through fri night...sw winds 15 to 20 kt with gusts up to
25 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.

$$

fzus51 kbox 301406
cwfbox
expires:202603310300;;539564

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1005 am edt mon mar 30 2026

coastal waters from the merrimack river ma to watch hill ri out
to 25 nm


anz254-310300-
coastal waters from provincetown ma to chatham ma to nantucket ma
out 20 nm-
1005 am edt mon mar 30 2026

...small craft advisory in effect through wednesday evening...

.this afternoon...sw winds 20 to 25 kt with gusts up to 30 kt.
seas 5 to 7 ft. wave detail: sw 7 ft at 6 seconds and e 1 foot at
8 seconds. a slight chance of rain. 
.tonight...sw winds 20 to 25 kt with gusts up to 30 kt. seas 5 to
7 ft, subsiding to 3 to 5 ft after midnight. wave detail: sw 7 ft
at 6 seconds and e 1 foot at 8 seconds, becoming s 5 ft at
8 seconds and w 2 ft at 4 seconds. a chance of rain after
midnight. 
.tue...sw 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 8 seconds and w 2 ft at 4 seconds. rain likely, mainly in the
morning. 
.tue night...sw winds 20 to 25 kt, increasing to 25 to 30 kt
after midnight. seas 5 to 7 ft, building to 6 to 9 ft after
midnight. wave detail: s 6 ft at 8 seconds and sw 2 ft at
4 seconds, becoming s 8 ft at 8 seconds and sw 2 ft at 5 seconds.
.wed...sw winds 25 to 30 kt. seas 7 to 10 ft. wave detail: s 9 ft
at 8 seconds and w 2 ft at 5 seconds. a chance of rain in the
afternoon. 
.wed night...w winds 15 to 20 kt, becoming ne after midnight.
gusts up to 25 kt. seas 5 to 8 ft, subsiding to 4 to 6 ft after
midnight. wave detail: s 7 ft at 8 seconds and w 2 ft at
4 seconds, becoming s 4 ft at 8 seconds and n 3 ft at 4 seconds.
a chance of rain. 
.thu through fri night...sw winds 15 to 20 kt with gusts up to
25 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.

$$

fzus51 kbox 301406
cwfbox
expires:202603310300;;539565

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1005 am edt mon mar 30 2026

coastal waters from the merrimack river ma to watch hill ri out
to 25 nm


anz255-310300-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
1005 am edt mon mar 30 2026

...small craft advisory in effect through wednesday evening...

.this afternoon...sw winds 25 to 30 kt with gusts up to 35 kt.
seas 6 to 8 ft, building to 7 to 10 ft. wave detail: sw 8 ft at
7 seconds and sw 2 ft at 4 seconds, becoming sw 10 ft at
8 seconds and sw 2 ft at 4 seconds. 
.tonight...sw winds 25 to 30 kt, diminishing to 20 to 25 kt after
midnight. seas 6 to 9 ft, subsiding to 5 to 7 ft after midnight.
wave detail: sw 9 ft at 8 seconds and sw 2 ft at 4 seconds,
becoming sw 7 ft at 8 seconds and w 1 foot at 4 seconds. a chance
of rain after midnight. 
.tue...sw winds 15 to 20 kt with gusts up to 25 kt. seas 5 to
7 ft. wave detail: sw 7 ft at 8 seconds and sw 1 foot at
4 seconds. rain likely. 
.tue night...sw winds 25 to 30 kt with gusts up to 35 kt. seas
6 to 9 ft, building to 9 to 12 ft after midnight. wave detail: sw
9 ft at 8 seconds and sw 1 foot at 4 seconds, becoming sw 12 ft
at 8 seconds and sw 2 ft at 4 seconds. 
.wed...sw winds 25 to 30 kt with gusts up to 35 kt. seas 9 to
12 ft. wave detail: sw 12 ft at 8 seconds and sw 2 ft at
4 seconds. a chance of rain in the afternoon. 
.wed night...w winds 15 to 20 kt, becoming ne after midnight.
gusts up to 25 kt. seas 7 to 10 ft, subsiding to 5 to 7 ft after
midnight. wave detail: sw 9 ft at 8 seconds and w 1 foot at
4 seconds, becoming s 6 ft at 8 seconds and n 2 ft at 3 seconds.
rain likely. 
.thu...ne winds 15 to 20 kt with gusts up to 25 kt. seas 4 to
6 ft. a chance of rain. 
.thu night through fri night...sw winds 20 to 25 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.

$$