fzus51 kbox 210805
cwfbox
expires:202608212100;;096912

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
404 am edt fri aug 21 2026

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


anz231-212100-
cape cod bay-
404 am edt fri aug 21 2026

.today...ne winds 10 to 15 kt with gusts up to 20 kt. seas around
2 ft. wave detail: n 2 ft at 3 seconds and e 1 foot at 8 seconds.
showers likely. patchy fog this morning with vsby 1 to 3 nm. 
.tonight...ne winds 10 to 15 kt. gusts up to 20 kt after
midnight. seas around 2 ft. wave detail: n 2 ft at 4 seconds and
e 2 ft at 8 seconds. patchy fog. a chance of showers. 
.sat...ne winds 10 to 15 kt with gusts up to 20 kt, diminishing
to 5 to 10 kt in the afternoon. seas around 2 ft. wave detail: n
2 ft at 4 seconds and e 1 foot at 8 seconds. patchy fog. a chance
of showers. 
.sat night...n winds around 5 kt, becoming se around 5 kt after
midnight. seas around 2 ft. wave detail: n 1 foot at 4 seconds
and se 1 foot at 8 seconds. a chance of showers in the evening,
then showers likely after midnight. patchy fog in the evening
with vsby 1 to 3 nm. 
.sun...s winds 5 to 10 kt. seas around 2 ft. wave detail: n
1 foot at 4 seconds and e 1 foot at 8 seconds. showers likely,
mainly in the morning. 
.sun night...sw winds 5 to 10 kt. seas around 2 ft. wave detail:
s 1 foot at 2 seconds and ne 1 foot at 5 seconds. 
.mon through tue night...w winds 5 to 10 kt with gusts up to
20 kt. seas around 2 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 210805
cwfbox
expires:202608212100;;096916

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
404 am edt fri aug 21 2026

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


anz232-212100-
nantucket sound-
404 am edt fri aug 21 2026

.today...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 w 1 foot at
5 seconds. patchy fog. showers. isolated tstms this morning. vsby
1 to 3 nm. 
.tonight...ne winds 15 to 20 kt, diminishing to 10 to 15 kt after
midnight. seas 2 to 3 ft. wave detail: ne 3 ft at 4 seconds and
sw 1 foot at 5 seconds. patchy fog. a chance of showers. vsby
1 to 3 nm in the evening. 
.sat...ne winds 10 to 15 kt with gusts up to 20 kt, becoming s
5 to 10 kt in the afternoon. seas around 2 ft. wave detail: ne
2 ft at 5 seconds and sw 1 foot at 5 seconds. patchy fog. a
chance of showers in the morning. 
.sat night...sw winds 5 to 10 kt, becoming se after midnight.
seas around 2 ft. wave detail: sw 1 foot at 2 seconds and e
1 foot at 5 seconds. showers. patchy fog in the evening with vsby
1 to 3 nm. 
.sun...s winds 5 to 10 kt. seas around 2 ft. wave detail: s
1 foot at 3 seconds and e 1 foot at 6 seconds. showers likely,
mainly in the morning. 
.sun night...sw winds around 10 kt. seas 2 to 3 ft. wave detail:
sw 2 ft at 3 seconds and e 2 ft at 6 seconds. a chance of
showers. 
.mon...sw winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
3 ft. a chance of showers. 
.mon night through tue night...w winds 15 to 20 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 210805
cwfbox
expires:202608212100;;096917

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
404 am edt fri aug 21 2026

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


anz233-212100-
vineyard sound-
404 am edt fri aug 21 2026

.today...ne winds 15 to 20 kt with gusts up to 25 kt. seas 2 to
4 ft. wave detail: ne 2 ft at 3 seconds and w 1 foot at
6 seconds. patchy fog. showers. isolated tstms this morning with
vsby 1 to 3 nm. 
.tonight...ne winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
3 ft. wave detail: ne 2 ft at 3 seconds and s 1 foot at
7 seconds. patchy fog. a chance of showers. vsby 1 to 3 nm in the
evening. 
.sat...ne winds 10 to 15 kt, becoming n 5 to 10 kt in the
afternoon. seas around 2 ft. wave detail: ne 2 ft at 3 seconds
and s 1 foot at 7 seconds. patchy fog. a chance of showers in the
afternoon. 
.sat night...se winds 5 to 10 kt. seas around 2 ft. wave detail:
ne 1 foot at 3 seconds and w 1 foot at 4 seconds. showers. patchy
fog in the evening. 
.sun...s winds 5 to 10 kt. seas around 2 ft. wave detail: se 2 ft
at 5 seconds and se 1 foot at 13 seconds. showers likely, mainly
in the morning. 
.sun night...sw winds around 10 kt. seas 2 to 3 ft. wave detail:
s 3 ft at 6 seconds and e 1 foot at 4 seconds. 
.mon through tue night...w winds 15 to 20 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 210805
cwfbox
expires:202608212100;;096918

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
404 am edt fri aug 21 2026

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


anz234-212100-
buzzards bay-
404 am edt fri aug 21 2026

.today...ne winds 15 to 20 kt with gusts up to 25 kt. seas 2 to
4 ft. wave detail: ne 2 ft at 3 seconds and w 1 foot at
5 seconds. showers. isolated tstms this morning. patchy fog this
morning with vsby 1 to 3 nm. 
.tonight...ne winds 10 to 15 kt. gusts up to 20 kt in the
evening. seas 2 to 3 ft. wave detail: ne 2 ft at 3 seconds and sw
1 foot at 6 seconds. patchy fog. a chance of showers. 
.sat...ne winds 10 to 15 kt, becoming n 5 to 10 kt in the
afternoon. seas around 2 ft in the morning, then 1 foot or less.
wave detail: ne 1 foot at 3 seconds and sw 1 foot at 6 seconds,
becoming ne 1 foot at 3 seconds and w 1 foot at 5 seconds. patchy
fog. a chance of showers. 
.sat night...n winds 5 to 10 kt, becoming se after midnight. seas
1 foot or less. wave detail: ne 1 foot at 3 seconds and w 1 foot
at 4 seconds. showers. patchy fog in the evening. 
.sun...s winds 5 to 10 kt. seas around 2 ft. wave detail: se 2 ft
at 4 seconds and s 2 ft at 7 seconds. showers likely, mainly in
the morning. 
.sun night...sw winds around 10 kt. seas 2 to 3 ft. wave detail:
s 3 ft at 5 seconds and ne 1 foot at 4 seconds. 
.mon through tue night...w winds 15 to 20 kt with gusts up 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 210805
cwfbox
expires:202608212100;;096919

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
404 am edt fri aug 21 2026

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


anz235-212100-
rhode island sound-
404 am edt fri aug 21 2026

.today...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 se 2 ft at 8 seconds.
showers. isolated tstms this morning. patchy fog this morning
with vsby 1 to 3 nm. 
.tonight...ne winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
3 ft. wave detail: ne 3 ft at 4 seconds and s 1 foot at
7 seconds. patchy fog. a chance of showers. 
.sat...n winds 10 to 15 kt, diminishing to 5 to 10 kt in the
afternoon. seas 2 to 3 ft. wave detail: ne 2 ft at 4 seconds and
s 1 foot at 7 seconds. patchy fog. a chance of showers in the
afternoon. 
.sat night...ne winds 5 to 10 kt, becoming e after midnight. seas
around 2 ft. wave detail: se 2 ft at 8 seconds and ne 1 foot at
3 seconds. showers. patchy fog in the evening. 
.sun...s winds around 10 kt. seas 2 to 3 ft. wave detail: se 3 ft
at 6 seconds and se 1 foot at 13 seconds. showers likely, mainly
in the morning. 
.sun night...sw winds around 10 kt. seas 3 to 5 ft. wave detail:
sw 3 ft at 6 seconds and ne 2 ft at 7 seconds. 
.mon...sw winds 10 to 15 kt with gusts up to 20 kt. seas 3 to
5 ft. 
.mon night through tue night...w winds 15 to 20 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 210805
cwfbox
expires:202608212100;;096922

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
404 am edt fri aug 21 2026

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


anz236-212100-
narragansett bay-
404 am edt fri aug 21 2026

.today...ne winds 10 to 15 kt with gusts up to 25 kt. waves 2 to
3 ft. showers likely, mainly this morning. patchy fog this
morning with vsby 1 to 3 nm. 
.tonight...n winds 10 to 15 kt. gusts up to 20 kt in the evening.
waves around 2 ft. a chance of showers. 
.sat...n winds 5 to 10 kt. waves around 2 ft. patchy fog in the
afternoon. a chance of showers in the afternoon. 
.sat night...ne winds 5 to 10 kt. waves around 2 ft. a chance of
showers in the evening, then showers after midnight. patchy fog
in the evening. 
.sun...se winds 5 to 10 kt, becoming s in the afternoon. waves
around 2 ft. showers likely, mainly in the morning. 
.sun night...sw winds 5 to 10 kt. waves 2 to 3 ft.
.mon through tue night...w winds 10 to 15 kt with gusts up to
20 kt. waves 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 210805
cwfbox
expires:202608212100;;096910

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
404 am edt fri aug 21 2026

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


anz250-212100-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
404 am edt fri aug 21 2026

.today...ne winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
3 ft. wave detail: n 3 ft at 4 seconds and e 2 ft at 8 seconds. a
chance of showers. patchy fog this morning. 
.tonight...ne winds 10 to 15 kt. gusts up to 20 kt after
midnight. seas 2 to 3 ft. wave detail: n 3 ft at 4 seconds and e
2 ft at 8 seconds. a chance of showers. patchy fog in the
evening. 
.sat...ne winds 10 to 15 kt. gusts up to 20 kt in the morning.
seas 2 to 4 ft. wave detail: ne 3 ft at 5 seconds and e 2 ft at
8 seconds. a chance of showers. patchy fog in the afternoon. 
.sat night...ne winds 5 to 10 kt, becoming se after midnight.
seas 2 to 3 ft. wave detail: e 3 ft at 5 seconds and sw 1 foot at
5 seconds. a chance of showers in the evening, then showers
likely after midnight. patchy fog in the evening. 
.sun...se winds 5 to 10 kt. seas 2 to 3 ft. wave detail: e 2 ft
at 6 seconds and sw 1 foot at 4 seconds. showers likely, mainly
in the morning. 
.sun night...s winds 5 to 10 kt. seas 2 to 3 ft. wave detail: e
3 ft at 7 seconds and s 1 foot at 3 seconds. 
.mon through tue night...w winds 5 to 10 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 210805
cwfbox
expires:202608212100;;096913

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
404 am edt fri aug 21 2026

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


anz254-212100-
coastal waters from provincetown ma to chatham ma to nantucket ma
out 20 nm-
404 am edt fri aug 21 2026

.today...ne winds 15 to 20 kt. seas 2 to 3 ft. wave detail: e
3 ft at 4 seconds and e 2 ft at 8 seconds. patchy fog. showers
likely. isolated tstms this morning. vsby 1 to 3 nm. 
.tonight...ne winds 15 to 20 kt. seas 3 to 4 ft. wave detail: ne
4 ft at 5 seconds and e 2 ft at 8 seconds. patchy fog. a chance
of showers. vsby 1 to 3 nm in the evening. 
.sat...e winds 10 to 15 kt with gusts up to 20 kt, becoming se
5 to 10 kt in the afternoon. seas 2 to 4 ft. wave detail: ne 3 ft
at 5 seconds and s 1 foot at 5 seconds. patchy fog. a chance of
showers in the morning. 
.sat night...s winds 5 to 10 kt. seas 2 to 3 ft. wave detail: e
2 ft at 5 seconds and s 1 foot at 5 seconds. showers. patchy fog
in the evening with vsby 1 to 3 nm. 
.sun...s winds 5 to 10 kt. seas 2 to 3 ft. wave detail: se 3 ft
at 5 seconds and se 1 foot at 12 seconds. showers likely, mainly
in the morning. 
.sun night...sw winds 5 to 10 kt. seas 2 to 4 ft. wave detail: se
4 ft at 7 seconds and sw 1 foot at 3 seconds. a chance of
showers. 
.mon...sw winds 10 to 15 kt. seas 3 to 4 ft. a chance of showers.
.mon night through tue night...w winds 10 to 15 kt with gusts up
to 20 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 210805
cwfbox
expires:202608212100;;096914

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
404 am edt fri aug 21 2026

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


anz255-212100-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
404 am edt fri aug 21 2026

.today...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 se 2 ft at 8 seconds.
patchy fog. showers. isolated tstms this morning. vsby 1 to 3 nm.
.tonight...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 1 foot at
5 seconds. patchy fog. a chance of showers. vsby 1 to 3 nm in the
evening. 
.sat...ne winds 10 to 15 kt, becoming sw 5 to 10 kt in the
afternoon. seas 2 to 3 ft. wave detail: ne 3 ft at 5 seconds and
sw 1 foot at 5 seconds. patchy fog. 
.sat night...s winds 5 to 10 kt. seas 2 to 3 ft. wave detail: ne
2 ft at 5 seconds and sw 1 foot at 4 seconds. showers. patchy fog
in the evening with vsby 1 to 3 nm. 
.sun...s winds 10 to 15 kt. seas 2 to 3 ft. wave detail: s 3 ft
at 6 seconds and e 1 foot at 5 seconds. showers, mainly in the
morning. 
.sun night...sw winds around 10 kt. seas 4 to 6 ft. wave detail:
s 4 ft at 7 seconds and ne 1 foot at 4 seconds. a chance of
showers. 
.mon...sw winds 10 to 15 kt with gusts up to 20 kt. seas 4 to
6 ft. a chance of showers. 
.mon night...w winds 10 to 15 kt with gusts up to 20 kt. seas
3 to 5 ft. 
.tue and tue night...w winds 10 to 15 kt with gusts up to 20 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.

$$