fzus51 kbox 311406
cwfbox
expires:202604010300;;593268

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1006 am edt tue mar 31 2026

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


anz231-010300-
cape cod bay-
1006 am edt tue mar 31 2026

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

.this afternoon...sw winds 15 to 20 kt with gusts up to 25 kt.
seas 2 to 4 ft. wave detail: s 3 ft at 7 seconds and sw 2 ft at
3 seconds. scattered showers. isolated tstms. some tstms may
produce heavy rainfall. 
.tonight...nw winds 5 to 10 kt, becoming sw 15 to 20 kt after
midnight. gusts up to 25 kt. seas 2 to 4 ft. wave detail: sw 3 ft
at 4 seconds and s 3 ft at 9 seconds. patchy fog. vsby 1 nm or
less, increasing to 1 to 3 nm after midnight. 
.wed...sw winds 15 to 20 kt, becoming w 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. patchy fog. a chance of
showers in the morning, then showers likely in the afternoon.
vsby 1 to 3 nm in the morning. 
.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. showers. patchy fog in the evening with vsby 1 nm or
less. 
.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 e 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 311406
cwfbox
expires:202604010300;;593272

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1006 am edt tue mar 31 2026

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


anz232-010300-
nantucket sound-
1006 am 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. scattered showers with isolated tstms. isolated
showers. some tstms may produce heavy rainfall. 
.tonight...sw winds 10 to 15 kt, increasing to 20 to 25 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. patchy fog after midnight. 
.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 showers in the afternoon. 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. showers. patchy fog in the evening with vsby
1 nm or less. 
.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.  

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 311406
cwfbox
expires:202604010300;;593273

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1006 am edt tue mar 31 2026

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


anz233-010300-
vineyard sound-
1006 am 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: sw 6 ft at 8 seconds and sw 2 ft at
4 seconds. scattered showers with isolated tstms. some tstms may
produce heavy rainfall. 
.tonight...sw winds 5 to 10 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. scattered showers 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 8 ft. wave detail: s 7 ft
at 9 seconds and sw 2 ft at 4 seconds. patchy fog. showers likely
in the afternoon. vsby 1 to 3 nm. 
.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. showers. patchy fog in the evening with
vsby 1 nm or less. 
.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.  

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 311406
cwfbox
expires:202604010300;;593274

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1006 am edt tue mar 31 2026

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


anz234-010300-
buzzards bay-
1006 am 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 5 ft at 8 seconds and sw 3 ft at
4 seconds. scattered showers with isolated tstms. isolated
showers. some tstms may produce heavy rainfall. 
.tonight...s winds 5 to 10 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. scattered showers after
midnight. 
.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. patchy fog. a chance of
showers in the morning, then showers likely in the afternoon.
vsby 1 to 3 nm. 
.wed night...ne winds 10 to 15 kt, increasing to 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. showers. patchy fog in the evening with
vsby 1 nm or less. 
.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.  

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 311406
cwfbox
expires:202604010300;;593275

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1006 am edt tue mar 31 2026

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


anz235-010300-
rhode island sound-
1006 am 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. scattered showers. 
.tonight...sw winds 15 to 20 kt with 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. 
.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. patchy fog. a chance of
showers in the morning, then showers likely in the afternoon.
vsby 1 to 3 nm. 
.wed night...ne winds 10 to 15 kt, increasing to 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. showers. patchy fog in the evening with
vsby 1 nm or less. 
.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 311406
cwfbox
expires:202604010300;;593278

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1006 am edt tue mar 31 2026

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


anz236-010300-
narragansett bay-
1006 am edt tue mar 31 2026

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

.this afternoon...sw winds 15 to 20 kt, diminishing to 10 to
15 kt. gusts up to 30 kt. waves 3 to 5 ft. scattered showers with
isolated tstms. isolated showers. some tstms may produce heavy
rainfall. 
.tonight...s winds 10 to 15 kt with gusts up to 30 kt. waves 3 to
5 ft. scattered showers after midnight. 
.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
showers in the morning, then showers likely in the afternoon. 
.wed night...ne winds 10 to 15 kt. gusts up to 20 kt after
midnight. waves 2 to 4 ft. showers. patchy fog in the evening
with vsby 1 nm or less. 
.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.  

winds and waves 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 311406
cwfbox
expires:202604010300;;593266

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1006 am edt tue mar 31 2026

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


anz250-010300-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
1006 am edt tue mar 31 2026

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

.this afternoon...s winds 10 to 15 kt, becoming n. gusts up to
25 kt. seas 2 to 3 ft. wave detail: s 2 ft at 5 seconds and s
1 foot at 9 seconds. numerous showers with isolated tstms, then
scattered showers. patchy fog. some tstms may produce heavy
rainfall. 
.tonight...e winds 10 to 15 kt, becoming s 15 to 20 kt after
midnight. gusts up to 25 kt. seas 3 to 5 ft. wave detail: sw 3 ft
at 4 seconds and s 3 ft at 8 seconds. patchy fog. scattered
showers. vsby 1 nm or less. 
.wed...sw winds 15 to 20 kt, becoming n in the afternoon. gusts
up to 25 kt. seas 3 to 5 ft. wave detail: sw 3 ft at 4 seconds
and s 3 ft at 8 seconds. a chance of showers in the morning, then
showers likely in the afternoon. patchy fog in the morning with
vsby 1 to 3 nm. 
.wed night...ne winds 15 to 20 kt. seas 2 to 4 ft. wave detail: e
4 ft at 7 seconds and sw 1 foot at 4 seconds. showers likely.
patchy fog in the evening with vsby 1 nm or less. 
.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 311406
cwfbox
expires:202604010300;;593269

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1006 am edt tue mar 31 2026

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


anz254-010300-
coastal waters from provincetown ma to chatham ma to nantucket ma
out 20 nm-
1006 am 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. scattered showers with isolated tstms, then isolated
showers. some tstms may produce heavy rainfall. 
.tonight...sw winds 15 to 20 kt, increasing to 20 to 25 kt after
midnight. 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. 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 showers. vsby 1 nm or less. 
.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. showers. patchy fog in the evening with vsby 1 nm or
less. 
.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 311406
cwfbox
expires:202604010300;;593270

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1006 am edt tue mar 31 2026

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


anz255-010300-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
1006 am 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 35 kt.
seas 6 to 9 ft. wave detail: sw 9 ft at 8 seconds and sw 1 foot
at 4 seconds. scattered showers. 
.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. patchy fog after midnight with vsby 1 to 3 nm. 
.wed...sw winds 25 to 30 kt, diminishing to 20 to 25 kt in the
afternoon. 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 showers in the
afternoon. vsby 1 nm or less. 
.wed night...nw winds 15 to 20 kt, becoming ne after midnight.
seas 5 to 7 ft. wave detail: sw 7 ft at 8 seconds and ne 2 ft at
4 seconds. showers likely. patchy fog in the evening with vsby
1 nm or less. 
.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.

$$