fzus51 kbox 211104
cwfbox
expires:202607220000;;345194

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
704 am edt tue jul 21 2026

coastal waters from the merrimack river ma to watch hill ri out
to 60 nm


anz231-220000-
cape cod bay-
704 am edt tue jul 21 2026

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

.today...s winds 10 to 15 kt with gusts up to 25 kt. seas 2 to
3 ft. wave detail: se 2 ft at 3 seconds and w 1 foot at
3 seconds. 
.tonight...s winds 15 to 20 kt with gusts up to 30 kt. seas 3 to
5 ft. wave detail: sw 3 ft at 5 seconds and e 1 foot at
12 seconds. showers with a chance of tstms in the evening, then
showers after midnight. 
.wed...sw winds 15 to 20 kt with gusts up to 30 kt. seas 3 to
4 ft. wave detail: sw 3 ft at 4 seconds and se 1 foot at
7 seconds. showers likely, mainly in the morning. 
.wed night...sw winds 15 to 20 kt with gusts up to 25 kt,
becoming w 5 to 10 kt after midnight. seas 2 to 4 ft. wave
detail: sw 3 ft at 4 seconds and se 1 foot at 8 seconds. a chance
of showers. 
.thu...nw winds 5 to 10 kt, becoming ne in the afternoon. seas
around 2 ft. wave detail: s 2 ft at 7 seconds and nw 1 foot at
2 seconds. 
.thu night...se winds around 5 kt, becoming n around 5 kt after
midnight. seas around 2 ft. wave detail: se 2 ft at 7 seconds and
nw 1 foot at 3 seconds. 
.fri through sat night...e winds 5 to 10 kt. seas around 2 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 211104
cwfbox
expires:202607220000;;345198

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
704 am edt tue jul 21 2026

coastal waters from the merrimack river ma to watch hill ri out
to 60 nm


anz232-220000-
nantucket sound-
704 am edt tue jul 21 2026

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

.today...s winds 10 to 15 kt, becoming se 15 to 20 kt this
afternoon. gusts up to 25 kt. seas 2 to 3 ft. wave detail: sw
3 ft at 4 seconds and se 2 ft at 8 seconds. a slight chance of
showers this afternoon. 
.tonight...s winds 20 to 25 kt, becoming sw 25 to 30 kt after
midnight. seas 3 to 4 ft, building to 4 to 6 ft after midnight.
wave detail: se 4 ft at 6 seconds and w 1 foot at 6 seconds,
becoming s 5 ft at 6 seconds and w 3 ft at 5 seconds. a chance of
tstms. showers.
.wed...sw winds 25 to 30 kt, diminishing to 20 to 25 kt in the
afternoon. seas 4 to 6 ft. wave detail: sw 5 ft at 6 seconds.
showers likely, mainly in the morning. 
.wed night...sw winds 20 to 25 kt, becoming w 15 to 20 kt after
midnight. gusts up to 30 kt. seas 4 to 6 ft. wave detail: sw 5 ft
at 5 seconds and e 2 ft at 10 seconds. a chance of showers. 
.thu...nw winds around 10 kt, becoming ne in the afternoon. seas
2 to 4 ft. wave detail: sw 2 ft at 7 seconds and e 2 ft at
10 seconds. a chance of showers in the morning. 
.thu night...e winds 5 to 10 kt, becoming n after midnight. seas
2 to 3 ft. wave detail: sw 2 ft at 5 seconds and e 2 ft at
7 seconds. 
.fri through sat night...e winds 5 to 10 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 211104
cwfbox
expires:202607220000;;345199

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
704 am edt tue jul 21 2026

coastal waters from the merrimack river ma to watch hill ri out
to 60 nm


anz233-220000-
vineyard sound-
704 am edt tue jul 21 2026

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

.today...s winds 10 to 15 kt, becoming se 15 to 20 kt this
afternoon. gusts up to 25 kt. seas 2 to 3 ft. wave detail: s 3 ft
at 5 seconds and se 3 ft at 8 seconds. a chance of showers with a
slight chance of tstms this afternoon. 
.tonight...s winds 20 to 25 kt with gusts up to 30 kt. seas 3 to
4 ft, building to 4 to 6 ft after midnight. wave detail: sw 4 ft
at 6 seconds and e 1 foot at 12 seconds, becoming sw 6 ft at
7 seconds and se 3 ft at 8 seconds. showers with a chance of
tstms in the evening, then showers after midnight. 
.wed...sw winds 20 to 25 kt with gusts up to 30 kt. seas 5 to
7 ft. wave detail: sw 7 ft at 7 seconds and e 2 ft at 7 seconds.
showers likely, mainly in the morning. 
.wed night...sw winds 15 to 20 kt with gusts up to 30 kt,
becoming w 10 to 15 kt with gusts up to 20 kt after midnight.
seas 4 to 6 ft. wave detail: sw 6 ft at 8 seconds and se 2 ft at
9 seconds. a chance of showers. 
.thu...n winds 5 to 10 kt. seas 3 to 5 ft. wave detail: sw 4 ft
at 9 seconds and e 2 ft at 10 seconds. 
.thu night...e winds 5 to 10 kt, becoming n after midnight. seas
2 to 4 ft. wave detail: sw 3 ft at 8 seconds and e 1 foot at
7 seconds. 
.fri through sat night...ne winds 5 to 10 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 211104
cwfbox
expires:202607220000;;345200

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
704 am edt tue jul 21 2026

coastal waters from the merrimack river ma to watch hill ri out
to 60 nm


anz234-220000-
buzzards bay-
704 am edt tue jul 21 2026

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

.today...s winds 10 to 15 kt, becoming se 15 to 20 kt this
afternoon. gusts up to 25 kt. seas 2 to 3 ft. wave detail: sw
3 ft at 4 seconds and s 3 ft at 8 seconds. a chance of showers
with a slight chance of tstms this afternoon. 
.tonight...s winds 20 to 25 kt with gusts up to 30 kt. seas 3 to
5 ft. wave detail: s 5 ft at 6 seconds and se 1 foot at
12 seconds. showers with a chance of tstms in the evening, then
showers after midnight. 
.wed...sw winds 20 to 25 kt with gusts up to 35 kt. seas 3 to
5 ft. wave detail: sw 5 ft at 6 seconds and se 1 foot at
11 seconds. showers likely, mainly in the morning. 
.wed night...sw winds 15 to 20 kt with gusts up to 30 kt,
becoming nw around 10 kt after midnight. seas 3 to 5 ft. wave
detail: sw 4 ft at 6 seconds and s 4 ft at 9 seconds. a chance of
showers. 
.thu...nw winds 5 to 10 kt. seas 2 to 4 ft. wave detail: e 2 ft
at 4 seconds and sw 2 ft at 9 seconds. 
.thu night...e winds 5 to 10 kt, becoming n after midnight. seas
2 to 3 ft. wave detail: sw 2 ft at 7 seconds and e 1 foot at
4 seconds. 
.fri through sat night...ne winds 5 to 10 kt. seas around 2 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 211104
cwfbox
expires:202607220000;;345201

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
704 am edt tue jul 21 2026

coastal waters from the merrimack river ma to watch hill ri out
to 60 nm


anz235-220000-
rhode island sound-
704 am edt tue jul 21 2026

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

.today...s winds 10 to 15 kt, becoming se 15 to 20 kt this
afternoon. gusts up to 25 kt. seas 2 to 3 ft. wave detail: s 3 ft
at 7 seconds and nw 1 foot at 3 seconds. a chance of showers with
a slight chance of tstms this afternoon. 
.tonight...s winds 20 to 25 kt with gusts up to 30 kt. seas 5 to
7 ft. wave detail: s 7 ft at 7 seconds and w 3 ft at 6 seconds.
showers. a chance of tstms in the evening. 
.wed...sw winds 20 to 25 kt with gusts up to 30 kt. seas 5 to
8 ft. wave detail: s 8 ft at 8 seconds and e 3 ft at 7 seconds.
showers likely, mainly in the morning. 
.wed night...sw winds 15 to 20 kt, becoming nw 10 to 15 kt after
midnight. gusts up to 25 kt. seas 5 to 7 ft. wave detail: s 7 ft
at 9 seconds and se 4 ft at 9 seconds. a chance of showers. 
.thu...n winds 5 to 10 kt, becoming sw in the afternoon. seas
5 to 7 ft. wave detail: s 6 ft at 9 seconds and e 3 ft at
7 seconds. 
.thu night...se winds 5 to 10 kt, becoming n after midnight. seas
3 to 5 ft. wave detail: s 4 ft at 8 seconds and e 2 ft at
9 seconds. 
.fri through sat night...ne winds 5 to 10 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 211104
cwfbox
expires:202607220000;;345204

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
704 am edt tue jul 21 2026

coastal waters from the merrimack river ma to watch hill ri out
to 60 nm


anz236-220000-
narragansett bay-
704 am edt tue jul 21 2026

.today...s winds 10 to 15 kt, becoming se 15 to 20 kt this
afternoon. gusts up to 25 kt. waves 2 to 3 ft. a chance of
showers with isolated tstms this afternoon. 
.tonight...s winds 15 to 20 kt with gusts up to 30 kt. waves 3 to
4 ft. showers with a chance of tstms in the evening, then showers
likely after midnight. 
.wed...sw winds 15 to 20 kt with gusts up to 30 kt. waves 3 to
5 ft. a chance of showers. 
.wed night...sw winds 10 to 15 kt with gusts up to 25 kt,
becoming nw 5 to 10 kt after midnight. waves 2 to 4 ft. a chance
of showers in the evening. 
.thu...nw winds 5 to 10 kt, becoming w in the afternoon. waves
2 to 3 ft. 
.thu night...w winds 5 to 10 kt, becoming n after midnight. waves
2 to 3 ft. 
.fri through sat night...ne winds 5 to 10 kt. waves 2 to 3 ft.  

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 211104
cwfbox
expires:202607220000;;345192

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
704 am edt tue jul 21 2026

coastal waters from the merrimack river ma to watch hill ri out
to 60 nm


anz250-220000-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
704 am edt tue jul 21 2026

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

.today...s winds 10 to 15 kt, becoming se 15 to 20 kt this
afternoon. gusts up to 25 kt. seas 2 to 3 ft. wave detail: s 3 ft
at 4 seconds and se 3 ft at 7 seconds. 
.tonight...s winds 15 to 20 kt with gusts up to 30 kt. seas 3 to
5 ft. wave detail: s 4 ft at 5 seconds and se 1 foot at
11 seconds. showers with a chance of tstms in the evening, then
showers likely after midnight.
.wed...s winds 15 to 20 kt with gusts up to 30 kt. seas 4 to
6 ft. wave detail: s 5 ft at 7 seconds and sw 3 ft at 4 seconds.
a chance of showers.
.wed night...sw winds 15 to 20 kt with gusts up to 30 kt,
becoming w around 10 kt with gusts up to 20 kt after midnight.
seas 4 to 6 ft. wave detail: s 5 ft at 7 seconds and se 4 ft at
8 seconds. a chance of showers in the evening. 
.thu...nw winds 5 to 10 kt, becoming sw in the afternoon. seas
2 to 4 ft. wave detail: se 4 ft at 10 seconds and s 3 ft at
6 seconds. 
.thu night...s winds around 5 kt, becoming w after midnight. seas
2 to 3 ft. wave detail: se 3 ft at 8 seconds and nw 1 foot at
3 seconds. 
.fri through sat night...e winds around 5 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 211104
cwfbox
expires:202607220000;;345195

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
704 am edt tue jul 21 2026

coastal waters from the merrimack river ma to watch hill ri out
to 60 nm


anz254-220000-
coastal waters from provincetown ma to chatham ma to nantucket ma
out 20 nm-
704 am edt tue jul 21 2026

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

.today...se winds 10 to 15 kt with gusts up to 25 kt. seas 2 to
3 ft. wave detail: s 3 ft at 5 seconds and w 1 foot at 3 seconds.
.tonight...s winds 20 to 25 kt with gusts up to 35 kt. seas 3 to
5 ft, building to 5 to 7 ft after midnight. wave detail: sw 5 ft
at 5 seconds and se 1 foot at 8 seconds, becoming se 7 ft at
7 seconds and w 2 ft at 5 seconds. showers with a chance of tstms
in the evening, then showers after midnight. 
.wed...s winds 20 to 25 kt with gusts up to 35 kt. seas 6 to
9 ft. wave detail: se 8 ft at 7 seconds and w 3 ft at 5 seconds.
showers likely in the morning. a chance of showers in the
afternoon. 
.wed night...sw winds 20 to 25 kt, becoming w 15 to 20 kt after
midnight. gusts up to 30 kt. seas 6 to 9 ft, subsiding to 5 to
7 ft after midnight. wave detail: s 8 ft at 8 seconds and se 4 ft
at 9 seconds, becoming s 7 ft at 9 seconds and se 4 ft at
10 seconds. a chance of showers. 
.thu...nw winds 10 to 15 kt, becoming ne 5 to 10 kt in the
afternoon. seas 5 to 7 ft. wave detail: s 6 ft at 9 seconds and e
3 ft at 10 seconds. a chance of showers. 
.thu night...e winds around 5 kt, becoming n after midnight. seas
4 to 6 ft. wave detail: s 4 ft at 8 seconds and se 3 ft at
8 seconds. a chance of showers in the evening. 
.fri through sat night...e winds 5 to 10 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 211104
cwfbox
expires:202607220000;;345196

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
704 am edt tue jul 21 2026

coastal waters from the merrimack river ma to watch hill ri out
to 60 nm


anz255-220000-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
704 am edt tue jul 21 2026

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

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

$$