fzus51 kbox 311706
cwfbox
expires:202604010600;;599115

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
105 pm edt tue mar 31 2026

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


anz231-010600-
cape cod bay-
105 pm edt tue mar 31 2026

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

.this afternoon...w winds 10 to 15 kt with gusts up to 25 kt.
seas 2 to 4 ft. wave detail: s 3 ft at 9 seconds and sw 2 ft at
3 seconds. a chance of rain with a slight chance of tstms. 
.tonight...w winds 10 to 15 kt, becoming sw 15 to 20 kt after
midnight. gusts up to 30 kt. seas 2 to 4 ft. wave detail: sw 3 ft
at 4 seconds and s 3 ft at 9 seconds. patchy fog in the evening. 
.wed...sw 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: s 4 ft
at 9 seconds and sw 3 ft at 4 seconds. rain likely. patchy fog in
the morning with vsby 1 to 3 nm. 
.wed night...ne winds 10 to 15 kt with gusts up to 20 kt. seas
around 2 ft. wave detail: n 2 ft at 4 seconds and s 2 ft at
8 seconds. rain likely in the evening, then showers likely after
midnight. 
.thu and thu night...e winds 15 to 20 kt. seas 2 to 3 ft. wave
detail: ne 3 ft at 5 seconds and s 2 ft at 7 seconds. a chance of
showers. 
.fri...s winds 15 to 20 kt with gusts up to 25 kt. seas around
2 ft. wave detail: s 2 ft at 3 seconds and s 2 ft at 6 seconds. 
.fri night and sat...sw winds 15 to 20 kt, becoming n 10 to
15 kt. gusts up to 25 kt. seas 2 to 4 ft. 
.sat night...se winds 10 to 15 kt with gusts up to 20 kt. seas
2 to 3 ft. a chance of rain.  

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.

$$

fzus51 kbox 311706
cwfbox
expires:202604010600;;599119

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
105 pm edt tue mar 31 2026

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


anz232-010600-
nantucket sound-
105 pm edt tue mar 31 2026

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

.this afternoon...sw winds 15 to 20 kt with gusts up to 30 kt.
seas 3 to 5 ft. wave detail: sw 4 ft at 4 seconds and sw 4 ft at
8 seconds. a slight chance of rain. 
.tonight...sw winds 10 to 15 kt, increasing to 15 to 20 kt after
midnight. gusts up to 30 kt. seas 4 to 6 ft. wave detail: sw 4 ft
at 4 seconds and s 4 ft at 9 seconds. 
.wed...sw winds 20 to 25 kt, diminishing to 15 to 20 kt in the
afternoon. gusts up to 30 kt. seas 4 to 6 ft. wave detail: sw
4 ft at 4 seconds and s 4 ft at 9 seconds. patchy fog. a chance
of rain. vsby 1 to 3 nm. 
.wed night...n winds 10 to 15 kt, becoming ne 15 to 20 kt after
midnight. seas 2 to 4 ft. wave detail: ne 2 ft at 3 seconds and w
2 ft at 4 seconds. rain likely in the evening, then showers
likely after midnight. patchy fog in the evening. 
.thu...ne winds 15 to 20 kt. seas 2 to 3 ft. wave detail: ne 3 ft
at 4 seconds and s 2 ft at 7 seconds. a chance of showers. 
.thu night...e 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 s
1 foot at 7 seconds. 
.fri through sat night...se winds 20 to 25 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.

$$

fzus51 kbox 311706
cwfbox
expires:202604010600;;599120

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
105 pm edt tue mar 31 2026

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


anz233-010600-
vineyard sound-
105 pm edt tue mar 31 2026

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

.this afternoon...sw winds 15 to 20 kt with gusts up to 30 kt.
seas 4 to 6 ft. wave detail: s 6 ft at 9 seconds and sw 2 ft at
4 seconds. 
.tonight...sw winds 10 to 15 kt, increasing to 15 to 20 kt after
midnight. gusts up to 30 kt. seas 5 to 8 ft. wave detail: s 7 ft
at 9 seconds and sw 2 ft at 4 seconds. 
.wed...sw winds 20 to 25 kt, diminishing to 15 to 20 kt in the
afternoon. gusts up to 30 kt. seas 5 to 8 ft. wave detail: s 7 ft
at 9 seconds and sw 2 ft at 4 seconds. a chance of rain. patchy
fog in the morning.
.wed night...n 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
ne 2 ft at 3 seconds. rain likely in the evening, then showers
after midnight. 
.thu...ne winds 15 to 20 kt with gusts up to 25 kt. seas 2 to
4 ft. wave detail: ne 3 ft at 5 seconds and sw 3 ft at 7 seconds.
a chance of showers.
.thu night...ne winds 15 to 20 kt, becoming e 10 to 15 kt after
midnight. seas 2 to 3 ft. wave detail: e 2 ft at 5 seconds and s
2 ft at 7 seconds. 
.fri through sat night...se winds 20 to 25 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.

$$

fzus51 kbox 311706
cwfbox
expires:202604010600;;599121

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
105 pm edt tue mar 31 2026

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


anz234-010600-
buzzards bay-
105 pm edt tue mar 31 2026

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

.this afternoon...sw winds 15 to 20 kt with gusts up to 30 kt.
seas 3 to 5 ft. wave detail: s 5 ft at 9 seconds and sw 3 ft at
4 seconds. 
.tonight...s winds 10 to 15 kt, becoming sw 15 to 20 kt after
midnight. gusts up to 30 kt. seas 4 to 6 ft. wave detail: s 6 ft
at 9 seconds and sw 3 ft at 4 seconds. 
.wed...sw winds 20 to 25 kt, diminishing to 15 to 20 kt in the
afternoon. gusts up to 30 kt. seas 4 to 6 ft. wave detail: s 6 ft
at 9 seconds and sw 3 ft at 4 seconds. a chance of rain. 
.wed night...n winds 10 to 15 kt, becoming ne 15 to 20 kt after
midnight. seas 2 to 4 ft. wave detail: sw 4 ft at 8 seconds and
ne 2 ft at 3 seconds. rain likely in the evening, then showers
after midnight. 
.thu...ne winds 15 to 20 kt with gusts up to 25 kt. seas 2 to
3 ft. wave detail: ne 3 ft at 5 seconds and sw 2 ft at 7 seconds.
a chance of showers.
.thu night...ne winds 15 to 20 kt, becoming e 5 to 10 kt after
midnight. seas 2 to 3 ft. wave detail: ne 2 ft at 3 seconds and e
2 ft at 6 seconds. 
.fri through sat night...se winds 20 to 25 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.

$$

fzus51 kbox 311706
cwfbox
expires:202604010600;;599122

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
105 pm edt tue mar 31 2026

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


anz235-010600-
rhode island sound-
105 pm edt tue mar 31 2026

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

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

$$

fzus51 kbox 311706
cwfbox
expires:202604010600;;599125

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
105 pm edt tue mar 31 2026

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


anz236-010600-
narragansett bay-
105 pm edt tue mar 31 2026

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

.this afternoon...sw winds 10 to 15 kt with gusts up to 25 kt.
waves 3 to 5 ft. 
.tonight...sw winds 10 to 15 kt with gusts up to 30 kt. waves
3 to 5 ft. 
.wed...sw winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. gusts up to 25 kt. waves 3 to 5 ft. a chance of rain. 
.wed night...ne winds 10 to 15 kt. gusts up to 20 kt after
midnight. waves 2 to 4 ft. rain likely in the evening, then
showers after midnight. 
.thu...ne winds 15 to 20 kt. waves 2 to 3 ft. a chance of showers
in the morning. 
.thu night...ne winds 10 to 15 kt with gusts up to 20 kt,
becoming e 5 to 10 kt after midnight. waves 2 to 3 ft. 
.fri through sat...sw winds 15 to 20 kt with gusts up to 25 kt.
waves 2 to 3 ft. 
.sat night...se winds 10 to 15 kt with gusts up 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 311706
cwfbox
expires:202604010600;;599113

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
105 pm edt tue mar 31 2026

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


anz250-010600-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
105 pm edt tue mar 31 2026

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

.this afternoon...nw winds 10 to 15 kt with gusts up to 25 kt.
seas 2 to 3 ft. wave detail: s 2 ft at 4 seconds and s 1 foot at
10 seconds. a chance of rain with a slight chance of tstms. 
.tonight...e winds 10 to 15 kt, becoming sw after midnight. gusts
up to 30 kt. seas 3 to 5 ft. wave detail: sw 3 ft at 4 seconds
and s 3 ft at 8 seconds. patchy fog. vsby 1 to 3 nm, decreasing
to 1 nm or less after midnight. 
.wed...sw winds 15 to 20 kt with gusts up to 30 kt, becoming nw
10 to 15 kt with gusts up to 20 kt in the afternoon. seas 3 to
5 ft. wave detail: sw 3 ft at 4 seconds and s 3 ft at 8 seconds.
rain likely, mainly in the morning. patchy fog in the morning
with vsby 1 nm or less. 
.wed night...ne winds 10 to 15 kt, increasing to 15 to 20 kt
after midnight. seas 2 to 4 ft. wave detail: e 4 ft at 7 seconds
and sw 1 foot at 4 seconds. a chance of rain in the evening, then
showers likely after midnight. 
.thu and thu night...e winds 15 to 20 kt with gusts up to 25 kt.
seas 3 to 5 ft. wave detail: e 5 ft at 7 seconds. a chance of
showers. 
.fri...s winds 15 to 20 kt with gusts up to 25 kt. seas 3 to
4 ft. wave detail: e 4 ft at 6 seconds and s 3 ft at 4 seconds. a
chance of showers. 
.fri night and sat...sw winds 15 to 20 kt, becoming n. gusts up
to 25 kt. seas 3 to 5 ft. 
.sat night...se winds 15 to 20 kt. seas 3 to 5 ft. a chance of
rain.  

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.

$$

fzus51 kbox 311706
cwfbox
expires:202604010600;;599116

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
105 pm edt tue mar 31 2026

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


anz254-010600-
coastal waters from provincetown ma to chatham ma to nantucket ma
out 20 nm-
105 pm edt tue mar 31 2026

...small craft advisory in effect through late wednesday night...

.this afternoon...sw winds 15 to 20 kt with gusts up to 30 kt.
seas 5 to 7 ft. wave detail: s 7 ft at 9 seconds and w 2 ft at
4 seconds. a slight chance of rain and tstms. 
.tonight...sw winds 15 to 20 kt with gusts up to 30 kt. seas 5 to
8 ft. wave detail: s 8 ft at 9 seconds and w 2 ft at 4 seconds.
patchy fog in the evening with vsby 1 nm or less. 
.wed...sw winds 20 to 25 kt, diminishing to 15 to 20 kt in the
afternoon. gusts up to 30 kt. seas 6 to 9 ft, subsiding to 5 to
7 ft in the afternoon. wave detail: s 8 ft at 9 seconds and w
2 ft at 5 seconds, becoming s 7 ft at 9 seconds and w 2 ft at
4 seconds. patchy fog. a chance of rain. vsby 1 to 3 nm. 
.wed night...ne winds 10 to 15 kt with gusts up to 20 kt. seas
4 to 6 ft. wave detail: s 5 ft at 9 seconds and ne 4 ft at
5 seconds. rain likely in the evening, then showers likely after
midnight. 
.thu...ne winds 15 to 20 kt. seas 3 to 5 ft. wave detail: ne 5 ft
at 6 seconds and s 3 ft at 7 seconds. a chance of showers. 
.thu night...e winds 10 to 15 kt. gusts up to 20 kt in the
evening. seas 3 to 5 ft. wave detail: ne 4 ft at 6 seconds and s
2 ft at 7 seconds. 
.fri...s winds 15 to 20 kt with gusts up to 25 kt. seas 3 to
4 ft. 
.fri night...sw winds 20 to 25 kt with gusts up to 30 kt. seas
4 to 6 ft. 
.sat and sat night...nw winds 15 to 20 kt, becoming se. seas 3 to
5 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.

$$

fzus51 kbox 311706
cwfbox
expires:202604010600;;599117

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
105 pm edt tue mar 31 2026

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


anz255-010600-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
105 pm edt tue mar 31 2026

...small craft advisory in effect through late wednesday night...

.this afternoon...sw winds 20 to 25 kt with gusts up to 30 kt.
seas 7 to 9 ft. wave detail: sw 9 ft at 8 seconds and sw 1 foot
at 4 seconds. 
.tonight...sw winds 20 to 25 kt with gusts up to 35 kt. seas 8 to
11 ft. wave detail: sw 11 ft at 9 seconds and sw 2 ft at
4 seconds. 
.wed...sw winds 20 to 25 kt with gusts up to 35 kt. seas 8 to
11 ft. wave detail: s 11 ft at 9 seconds and sw 2 ft at
4 seconds. patchy fog. a chance of rain in the afternoon. vsby
1 to 3 nm in the morning. 
.wed night...n winds 10 to 15 kt, becoming ne 15 to 20 kt after
midnight. seas 5 to 7 ft. wave detail: sw 7 ft at 8 seconds and
ne 2 ft at 4 seconds. rain likely in the evening, then showers
likely after midnight. 
.thu...ne winds 15 to 20 kt with gusts up to 25 kt. seas 4 to
5 ft. wave detail: s 5 ft at 7 seconds and ne 4 ft at 4 seconds.
a chance of showers in the morning. 
.thu night...e winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. seas 3 to 5 ft. wave detail: ne 4 ft at 6 seconds
and s 3 ft at 7 seconds. 
.fri...s winds 15 to 20 kt with gusts up to 25 kt. seas 3 to
5 ft. 
.fri night and sat...sw winds 20 to 25 kt with gusts up to 30 kt,
becoming w 15 to 20 kt. seas 4 to 6 ft. 
.sat night...se 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.

$$