fzus51 kbox 312005
cwfbox
expires:202604010900;;608594

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

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


anz231-010900-
cape cod bay-
405 pm edt tue mar 31 2026

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

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

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 312005
cwfbox
expires:202604010900;;608598

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

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


anz232-010900-
nantucket sound-
405 pm edt tue mar 31 2026

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

.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 3 ft
at 4 seconds and sw 3 ft at 8 seconds. 
.wed...sw winds 15 to 20 kt with gusts up to 30 kt. seas 4 to
6 ft. wave detail: sw 3 ft at 4 seconds and sw 3 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 3 ft at 4 seconds and w
2 ft at 3 seconds. rain likely. 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 1 foot at 7 seconds. rain likely, mainly in
the morning. patchy fog in the morning with vsby 1 nm or less. 
.thu night...e 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: e 3 ft at 4 seconds and s 1 foot at 7 seconds. 
.fri and fri night...sw winds 15 to 20 kt with gusts up to 25 kt.
seas 2 to 4 ft. wave detail: s 3 ft at 5 seconds and e 2 ft at
6 seconds. 
.sat and sat night...s winds 15 to 20 kt with gusts up to 25 kt.
seas 2 to 3 ft. 
.sun...sw winds 20 to 25 kt with gusts up to 30 kt. seas 3 to
5 ft. a chance of rain. 
.sun night...sw winds 20 to 25 kt. seas 3 to 5 ft. rain likely.  

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 312005
cwfbox
expires:202604010900;;608599

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

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


anz233-010900-
vineyard sound-
405 pm edt tue mar 31 2026

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

.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: sw 6 ft
at 8 seconds and sw 2 ft at 4 seconds. 
.wed...sw winds 15 to 20 kt with gusts up to 30 kt. seas 5 to
8 ft. wave detail: s 6 ft at 9 seconds and sw 2 ft at 3 seconds.
a chance of rain. patchy fog in the morning. 
.wed night...n winds 10 to 15 kt, becoming ne 15 to 20 kt with
gusts up to 25 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. 
.thu...ne winds 15 to 20 kt with gusts up to 25 kt. seas 2 to
4 ft. wave detail: ne 3 ft at 4 seconds and sw 3 ft at 7 seconds.
rain likely, mainly in the morning. patchy fog in the morning
with vsby 1 to 3 nm. 
.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 4 seconds and s
1 foot at 7 seconds. 
.fri and fri night...sw winds 15 to 20 kt with gusts up to 25 kt.
seas 2 to 4 ft. wave detail: sw 4 ft at 6 seconds and e 1 foot at
4 seconds. 
.sat and sat night...sw winds 10 to 15 kt, becoming s 15 to
20 kt. gusts up to 25 kt. seas 2 to 3 ft. 
.sun and sun night...sw winds 20 to 25 kt with gusts up to 30 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 312005
cwfbox
expires:202604010900;;608600

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

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


anz234-010900-
buzzards bay-
405 pm edt tue mar 31 2026

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

.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: sw 4 ft
at 8 seconds and sw 2 ft at 4 seconds. 
.wed...sw winds 15 to 20 kt with gusts up to 30 kt. seas 4 to
6 ft. wave detail: sw 5 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 with
gusts up to 25 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. 
.thu...ne winds 15 to 20 kt with gusts up to 25 kt. seas 2 to
3 ft. wave detail: ne 3 ft at 4 seconds and sw 2 ft at 7 seconds.
rain likely, mainly 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. seas 2 to 3 ft. wave
detail: ne 2 ft at 3 seconds and s 1 foot at 7 seconds. a chance
of rain after midnight. 
.fri and fri night...sw winds 15 to 20 kt with gusts up to 25 kt.
seas 2 to 3 ft. wave detail: sw 3 ft at 5 seconds and e 1 foot at
4 seconds. 
.sat and sat night...s winds 10 to 15 kt, increasing to 15 to
20 kt. gusts up to 25 kt. seas 2 to 3 ft. 
.sun and sun night...sw winds 20 to 25 kt with gusts up to 30 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 312005
cwfbox
expires:202604010900;;608601

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

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


anz235-010900-
rhode island sound-
405 pm edt tue mar 31 2026

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

.tonight...sw winds 15 to 20 kt, increasing to 20 to 25 kt after
midnight. gusts up to 30 kt. seas 6 to 9 ft. wave detail: s 8 ft
at 9 seconds. 
.wed...sw winds 15 to 20 kt with gusts up to 30 kt. seas 6 to
9 ft. wave detail: s 8 ft at 9 seconds and sw 1 foot at
3 seconds. a chance of rain. 
.wed night...n winds 10 to 15 kt, becoming ne 15 to 20 kt with
gusts up to 25 kt after midnight. seas 4 to 6 ft. wave detail: s
6 ft at 8 seconds and ne 3 ft at 3 seconds. rain likely. 
.thu...ne winds 15 to 20 kt with gusts up to 25 kt. seas 3 to
5 ft. wave detail: ne 4 ft at 5 seconds and s 4 ft at 8 seconds.
a chance of rain. 
.thu night...ne winds 15 to 20 kt, becoming e around 10 kt after
midnight. seas 2 to 4 ft. wave detail: ne 4 ft at 5 seconds and s
2 ft at 7 seconds. 
.fri...s winds 10 to 15 kt, becoming sw 15 to 20 kt with gusts up
to 25 kt in the afternoon. seas 2 to 4 ft. wave detail: s 4 ft at
5 seconds and se 1 foot at 10 seconds. 
.fri night...sw winds 15 to 20 kt with gusts up to 25 kt. seas
3 to 5 ft. 
.sat and sat night...sw winds around 15 kt, becoming s 20 to
25 kt. seas 3 to 4 ft. 
.sun and sun night...sw winds 20 to 25 kt, becoming w. gusts up
to 30 kt. seas 4 to 6 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 312005
cwfbox
expires:202604010900;;608604

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

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


anz236-010900-
narragansett bay-
405 pm edt tue mar 31 2026

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

.tonight...sw winds 10 to 15 kt with gusts up to 25 kt. waves
3 to 5 ft. a slight chance of rain after midnight. 
.wed...sw winds 10 to 15 kt with 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. 
.thu...ne winds 15 to 20 kt with gusts up to 25 kt. waves 2 to
3 ft. a chance of rain. 
.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 and fri night...sw winds 15 to 20 kt with gusts up to 25 kt.
waves 2 to 3 ft. 
.sat and sat night...sw winds 10 to 15 kt, becoming s. gusts up
to 20 kt. waves 2 to 3 ft. 
.sun and sun night...sw winds 15 to 20 kt, becoming w. gusts up
to 25 kt. waves 3 to 5 ft. rain likely.  

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 312005
cwfbox
expires:202604010900;;608592

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

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


anz250-010900-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
405 pm edt tue mar 31 2026

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

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

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 312005
cwfbox
expires:202604010900;;608595

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

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


anz254-010900-
coastal waters from provincetown ma to chatham ma to nantucket ma
out 20 nm-
405 pm edt tue mar 31 2026

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

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

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 312005
cwfbox
expires:202604010900;;608596

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

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


anz255-010900-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
405 pm edt tue mar 31 2026

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

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

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.

$$