fzus51 kbox 212005
cwfbox
expires:202608220900;;126198

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

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


anz231-220900-
cape cod bay-
405 pm edt fri aug 21 2026

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

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 212005
cwfbox
expires:202608220900;;126202

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

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


anz232-220900-
nantucket sound-
405 pm edt fri aug 21 2026

.tonight...ne winds 15 to 20 kt. seas 2 to 3 ft. wave detail: ne
3 ft at 5 seconds and s 1 foot at 5 seconds. a chance of showers.
.sat...ne winds 10 to 15 kt with gusts up to 20 kt, becoming n
5 to 10 kt in the afternoon. seas around 2 ft. wave detail: ne
2 ft at 4 seconds and s 1 foot at 5 seconds. 
.sat night...nw winds 5 to 10 kt, becoming se after midnight.
seas around 2 ft. wave detail: e 2 ft at 5 seconds and n 1 foot
at 2 seconds. patchy fog. a chance of showers after midnight with
vsby 1 to 3 nm. 
.sun...se winds 5 to 10 kt, becoming s in the afternoon. seas
around 2 ft. wave detail: se 1 foot at 4 seconds and n 1 foot at
5 seconds. showers likely in the morning. a chance of showers in
the afternoon. patchy fog in the morning with vsby 1 to 3 nm. 
.sun night through mon night...w winds 10 to 15 kt with gusts up
to 20 kt. seas 2 to 3 ft. wave detail: w 2 ft at 3 seconds and s
2 ft at 3 seconds. 
.tue through wed 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 w
2 ft at 3 seconds.  

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 212005
cwfbox
expires:202608220900;;126203

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

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


anz233-220900-
vineyard sound-
405 pm edt fri aug 21 2026

.tonight...ne winds 15 to 20 kt. seas 2 to 3 ft. wave detail: ne
2 ft at 3 seconds and n 2 ft at 4 seconds. a chance of showers. 
.sat...ne winds 10 to 15 kt with gusts up to 20 kt, becoming n
5 to 10 kt in the afternoon. seas around 2 ft. wave detail: n
2 ft at 4 seconds and s 1 foot at 6 seconds. a chance of showers
in the afternoon. 
.sat night...ne winds 5 to 10 kt, becoming se after midnight.
seas around 2 ft. wave detail: n 1 foot at 3 seconds and s 1 foot
at 5 seconds. a chance of showers. patchy fog after midnight. 
.sun...se winds 5 to 10 kt, becoming s in the afternoon. seas
around 2 ft. wave detail: se 1 foot at 4 seconds and n 1 foot at
5 seconds. showers likely in the morning. a chance of showers in
the afternoon. patchy fog in the morning with vsby 1 to 3 nm. 
.sun night through mon night...w winds 10 to 15 kt with gusts up
to 20 kt. seas 2 to 3 ft. wave detail: sw 3 ft at 4 seconds and e
1 foot at 5 seconds. 
.tue through wed night...sw winds 15 to 20 kt with gusts up to
25 kt. seas 2 to 3 ft. wave detail: sw 3 ft at 3 seconds and sw
3 ft at 5 seconds.  

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 212005
cwfbox
expires:202608220900;;126204

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

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


anz234-220900-
buzzards bay-
405 pm edt fri aug 21 2026

.tonight...ne winds 15 to 20 kt, diminishing to 10 to 15 kt after
midnight. seas 2 to 3 ft. wave detail: n 2 ft at 4 seconds and s
1 foot at 6 seconds. a chance of showers. 
.sat...ne winds 10 to 15 kt with gusts up to 20 kt, becoming n
5 to 10 kt in the afternoon. seas around 2 ft in the morning,
then 1 foot or less. wave detail: n 2 ft at 4 seconds and s
1 foot at 5 seconds, becoming n 1 foot at 4 seconds and s 1 foot
at 5 seconds. a chance of showers in the afternoon. 
.sat night...n winds 5 to 10 kt, becoming e after midnight. seas
1 foot or less. wave detail: n 1 foot at 3 seconds and s 1 foot
at 5 seconds. a chance of showers. patchy fog after midnight. 
.sun...e winds 5 to 10 kt, becoming s in the afternoon. seas
around 2 ft. wave detail: se 2 ft at 4 seconds and n 1 foot at
4 seconds. showers likely in the morning. a chance of showers in
the afternoon. patchy fog in the morning with vsby 1 to 3 nm. 
.sun night through mon night...w winds 15 to 20 kt with gusts up
to 25 kt. seas 2 to 3 ft. wave detail: sw 3 ft at 4 seconds and e
1 foot at 4 seconds. 
.tue and tue night...w winds 15 to 20 kt with gusts up to 25 kt.
seas 2 to 4 ft. wave detail: sw 3 ft at 5 seconds and sw 2 ft at
4 seconds. 
.wed and wed night...sw winds 10 to 15 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 212005
cwfbox
expires:202608220900;;126205

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

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


anz235-220900-
rhode island sound-
405 pm edt fri aug 21 2026

...small craft advisory in effect until 6 pm edt this evening...

.tonight...ne winds 15 to 20 kt. seas 2 to 3 ft. wave detail: ne
3 ft at 4 seconds and n 2 ft at 5 seconds. a chance of showers,
mainly this evening. 
.sat...ne winds 10 to 15 kt with gusts up to 20 kt, diminishing
to 5 to 10 kt in the afternoon. seas 2 to 3 ft. wave detail: n
3 ft at 4 seconds and s 1 foot at 5 seconds. a chance of showers
in the afternoon. 
.sat night...ne winds 5 to 10 kt. seas around 2 ft. wave detail:
n 2 ft at 4 seconds and s 1 foot at 5 seconds. a chance of
showers. patchy fog after midnight. 
.sun...e winds 5 to 10 kt, becoming s in the afternoon. seas 2 to
3 ft. wave detail: se 2 ft at 4 seconds and n 1 foot at
4 seconds. a chance of showers. patchy fog in the morning. 
.sun night and mon...sw winds 10 to 15 kt with gusts up to 20 kt.
seas 3 to 5 ft. wave detail: se 4 ft at 7 seconds and w 2 ft at
3 seconds. 
.mon night...sw winds 10 to 15 kt. gusts up to 20 kt in the
evening. seas 2 to 4 ft. wave detail: s 4 ft at 7 seconds and w
1 foot at 4 seconds. 
.tue through wed night...sw winds 15 to 20 kt with gusts up 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 212005
cwfbox
expires:202608220900;;126208

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

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


anz236-220900-
narragansett bay-
405 pm edt fri aug 21 2026

.tonight...ne winds 10 to 15 kt. gusts up to 20 kt this evening.
waves around 2 ft. a chance of showers, mainly this evening. 
.sat...n winds 5 to 10 kt. waves around 2 ft. a chance of showers
in the afternoon. 
.sat night...ne winds around 5 kt. waves around 2 ft. a chance of
showers. patchy fog after midnight. 
.sun...e winds 5 to 10 kt, becoming s in the afternoon. waves
around 2 ft. a chance of showers. patchy fog in the morning. 
.sun night through mon night...w winds 10 to 15 kt with gusts up
to 20 kt. waves 2 to 3 ft. 
.tue through wed night...sw winds 10 to 15 kt with gusts up to
20 kt. waves 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 212005
cwfbox
expires:202608220900;;126196

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

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


anz250-220900-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
405 pm edt fri aug 21 2026

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

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 212005
cwfbox
expires:202608220900;;126199

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

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


anz254-220900-
coastal waters from provincetown ma to chatham ma to nantucket ma
out 20 nm-
405 pm edt fri aug 21 2026

.tonight...ne winds 10 to 15 kt with gusts up to 20 kt. seas 3 to
4 ft. wave detail: ne 3 ft at 4 seconds and e 2 ft at 8 seconds.
a chance of showers. patchy fog this evening. 
.sat...ne winds 10 to 15 kt with gusts up to 20 kt, becoming n
5 to 10 kt in the afternoon. seas 2 to 4 ft. wave detail: ne 3 ft
at 4 seconds and e 2 ft at 8 seconds. a chance of showers in the
morning. 
.sat night...w winds 5 to 10 kt, becoming s after midnight. seas
2 to 3 ft. wave detail: e 2 ft at 5 seconds and nw 1 foot at
3 seconds. patchy fog. a chance of showers after midnight. 
.sun...s winds 5 to 10 kt. seas 2 to 3 ft. wave detail: se 2 ft
at 6 seconds and n 1 foot at 4 seconds. showers likely in the
morning. a chance of showers in the afternoon. patchy fog in the
morning. 
.sun night...sw winds 5 to 10 kt. seas 2 to 4 ft. wave detail: se
3 ft at 7 seconds and w 1 foot at 3 seconds. a chance of showers
in the evening. 
.mon and mon night...sw winds 10 to 15 kt with gusts up to 20 kt.
seas 2 to 4 ft. wave detail: se 3 ft at 7 seconds and w 1 foot at
3 seconds. 
.tue through wed night...sw winds 10 to 15 kt with gusts up to
20 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 212005
cwfbox
expires:202608220900;;126200

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

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


anz255-220900-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
405 pm edt fri aug 21 2026

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

$$