fzus51 kbox 200804
cwfbox
expires:202607202100;;278612

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
404 am edt mon jul 20 2026

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


anz231-202100-
cape cod bay-
404 am edt mon jul 20 2026

...gale watch in effect from tuesday afternoon through wednesday
evening...

.today...nw winds around 5 kt, becoming s this afternoon. seas
1 foot or less. wave detail: n 1 foot at 5 seconds and e 1 foot
at 12 seconds. 
.tonight...s winds 5 to 10 kt. seas around 2 ft in the evening,
then 1 foot or less. wave detail: sw 1 foot at 3 seconds and ne
1 foot at 5 seconds, becoming sw 1 foot at 2 seconds and e 1 foot
at 4 seconds. 
.tue...s winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
3 ft. wave detail: s 2 ft at 4 seconds and e 1 foot at
12 seconds. 
.tue night...s winds 15 to 20 kt with gusts up to 30 kt. seas
3 to 4 ft. wave detail: s 2 ft at 4 seconds and e 1 foot at
11 seconds. showers with a chance of tstms. 
.wed...sw winds 15 to 20 kt with gusts up to 30 kt. seas 3 to
5 ft. wave detail: s 4 ft at 4 seconds and e 2 ft at 10 seconds.
showers likely with a chance of tstms in the morning, then a
chance of showers in the afternoon. 
.wed night...sw winds 15 to 20 kt with gusts up to 30 kt,
becoming w 5 to 10 kt after midnight. seas 2 to 4 ft. wave
detail: sw 4 ft at 5 seconds and se 2 ft at 10 seconds. a chance
of showers after midnight. 
.thu through fri night...s 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 200804
cwfbox
expires:202607202100;;278616

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
404 am edt mon jul 20 2026

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


anz232-202100-
nantucket sound-
404 am edt mon jul 20 2026

...gale watch in effect from tuesday afternoon through wednesday
evening...

.today...nw winds around 5 kt, becoming s this afternoon. seas
around 2 ft. wave detail: nw 1 foot at 3 seconds and se 1 foot at
8 seconds. 
.tonight...s winds around 10 kt. seas around 2 ft. wave detail:
sw 1 foot at 3 seconds and s 1 foot at 8 seconds. 
.tue...s winds 10 to 15 kt, becoming se 15 to 20 kt in the
afternoon. gusts up to 25 kt. seas 2 to 3 ft. wave detail: s 2 ft
at 4 seconds and e 1 foot at 12 seconds. a chance of showers in
the afternoon. 
.tue night...s winds 20 to 25 kt, increasing to 25 to 30 kt after
midnight. seas 3 to 5 ft. wave detail: sw 4 ft at 5 seconds and e
1 foot at 11 seconds. showers with a chance of tstms. 
.wed...sw winds 25 to 30 kt, diminishing to 20 to 25 kt in the
afternoon. seas 4 to 6 ft. wave detail: sw 4 ft at 4 seconds and
s 4 ft at 7 seconds. showers. a chance of tstms 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 4 ft
at 5 seconds and sw 4 ft at 9 seconds. a chance of showers. 
.thu and thu night...n winds around 10 kt, becoming e. seas 2 to
4 ft. a chance of showers. 
.fri and fri 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 200804
cwfbox
expires:202607202100;;278617

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
404 am edt mon jul 20 2026

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


anz233-202100-
vineyard sound-
404 am edt mon jul 20 2026

...gale watch in effect from tuesday afternoon through wednesday
evening...

.today...nw winds around 5 kt, becoming sw this afternoon. seas
around 2 ft. wave detail: sw 2 ft at 8 seconds and w 1 foot at
5 seconds. 
.tonight...s winds around 10 kt. seas around 2 ft. wave detail:
sw 2 ft at 8 seconds and sw 1 foot at 3 seconds. 
.tue...s winds 10 to 15 kt, becoming se 15 to 20 kt in the
afternoon. gusts up to 25 kt. seas 2 to 3 ft. wave detail: sw
2 ft at 6 seconds and e 1 foot at 12 seconds. a chance of showers
and tstms in the afternoon. 
.tue night...s winds 15 to 20 kt, increasing to 20 to 25 kt after
midnight. gusts up to 30 kt. seas 3 to 4 ft, building to 4 to
6 ft after midnight. wave detail: s 4 ft at 6 seconds and se
1 foot at 11 seconds, becoming sw 6 ft at 8 seconds and sw 3 ft
at 5 seconds. showers with a chance of tstms. 
.wed...sw winds 20 to 25 kt with gusts up to 35 kt. seas 4 to
6 ft. wave detail: sw 6 ft at 9 seconds and sw 3 ft at 6 seconds.
showers. a chance of tstms in the morning. 
.wed night...sw winds 20 to 25 kt with gusts up to 30 kt,
becoming nw 10 to 15 kt with gusts up to 20 kt after midnight.
seas 4 to 6 ft. wave detail: sw 6 ft at 9 seconds and w 3 ft at
5 seconds. a chance of showers. 
.thu...w winds 5 to 10 kt. seas 2 to 4 ft. a chance of showers. 
.thu night through fri 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 200804
cwfbox
expires:202607202100;;278618

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
404 am edt mon jul 20 2026

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


anz234-202100-
buzzards bay-
404 am edt mon jul 20 2026

...gale watch in effect from tuesday afternoon through wednesday
evening...

.today...nw winds around 5 kt, becoming sw with gusts up to 20 kt
this afternoon. seas around 2 ft. wave detail: sw 2 ft at
7 seconds and sw 1 foot at 4 seconds. 
.tonight...s winds 10 to 15 kt. seas around 2 ft. wave detail: sw
1 foot at 3 seconds and sw 1 foot at 7 seconds. 
.tue...s winds 10 to 15 kt, becoming se 15 to 20 kt in the
afternoon. gusts up to 25 kt. seas 2 to 3 ft. wave detail: s 2 ft
at 7 seconds and sw 1 foot at 3 seconds. a chance of showers and
tstms in the afternoon. 
.tue night...s winds 15 to 20 kt, increasing to 20 to 25 kt after
midnight. gusts up to 30 kt. seas 3 to 5 ft. wave detail: s 4 ft
at 6 seconds and se 1 foot at 11 seconds. showers with a chance
of tstms. 
.wed...sw winds 20 to 25 kt with gusts up to 35 kt. seas 4 to
6 ft. wave detail: sw 5 ft at 8 seconds and sw 4 ft at 4 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 with gusts up to 30 kt,
becoming nw 10 to 15 kt after midnight. seas 3 to 5 ft. wave
detail: sw 4 ft at 5 seconds and sw 4 ft at 8 seconds. a chance
of showers. 
.thu through fri 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 200804
cwfbox
expires:202607202100;;278619

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
404 am edt mon jul 20 2026

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


anz235-202100-
rhode island sound-
404 am edt mon jul 20 2026

...gale watch in effect from tuesday afternoon through wednesday
evening...

.today...nw winds around 5 kt, becoming s this afternoon. seas
2 to 3 ft. wave detail: s 3 ft at 8 seconds and sw 1 foot at
8 seconds. 
.tonight...s winds around 10 kt. seas 2 to 3 ft. wave detail: s
3 ft at 8 seconds and sw 1 foot at 5 seconds. 
.tue...s winds 10 to 15 kt, becoming se 15 to 20 kt in the
afternoon. gusts up to 25 kt. seas 2 to 3 ft. wave detail: sw
3 ft at 6 seconds and se 1 foot at 12 seconds. a chance of
showers and tstms in the afternoon. 
.tue night...s winds 15 to 20 kt, increasing to 20 to 25 kt after
midnight. gusts up to 30 kt. seas 3 to 5 ft, building to 5 to
7 ft after midnight. wave detail: s 5 ft at 7 seconds, becoming
sw 7 ft at 7 seconds and e 1 foot at 11 seconds. showers with a
chance of tstms. 
.wed...sw winds 20 to 25 kt with gusts up to 30 kt. seas 5 to
8 ft. wave detail: s 8 ft at 9 seconds and ne 3 ft at 10 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 with gusts up to 30 kt,
becoming nw 10 to 15 kt with gusts up to 20 kt after midnight.
seas 5 to 8 ft, subsiding to 4 to 6 ft after midnight. wave
detail: s 8 ft at 9 seconds and w 2 ft at 7 seconds, becoming s
6 ft at 9 seconds and w 3 ft at 8 seconds. a chance of showers. 
.thu...nw winds 5 to 10 kt. seas 3 to 5 ft. 
.thu night through fri 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 200804
cwfbox
expires:202607202100;;278622

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
404 am edt mon jul 20 2026

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


anz236-202100-
narragansett bay-
404 am edt mon jul 20 2026

.today...nw winds around 5 kt, becoming s this afternoon. waves
around 2 ft. 
.tonight...s winds 5 to 10 kt. waves around 2 ft. 
.tue...s winds 10 to 15 kt with gusts up to 20 kt. waves 2 to
3 ft. a chance of showers and tstms in the afternoon. 
.tue night...s winds 15 to 20 kt with gusts up to 25 kt. waves
2 to 4 ft. showers with a chance of tstms. 
.wed...sw winds 15 to 20 kt with gusts up to 30 kt. waves 3 to
5 ft. showers likely with a chance of tstms in the morning, then
a chance of showers in the afternoon. 
.wed night...sw winds 15 to 20 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 through fri night...s 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 200804
cwfbox
expires:202607202100;;278610

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
404 am edt mon jul 20 2026

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


anz250-202100-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
404 am edt mon jul 20 2026

...gale watch in effect from tuesday afternoon through wednesday
evening...

.today...w winds 5 to 10 kt, becoming s this afternoon. seas
around 2 ft. wave detail: w 1 foot at 3 seconds and se 1 foot at
8 seconds. 
.tonight...s winds 10 to 15 kt with gusts up to 20 kt. seas
around 2 ft. wave detail: w 2 ft at 3 seconds and s 2 ft at
8 seconds. 
.tue...s winds 10 to 15 kt with gusts up to 25 kt. seas 2 to
3 ft. wave detail: s 3 ft at 4 seconds and e 1 foot at
12 seconds. 
.tue night...s winds 15 to 20 kt with gusts up to 30 kt. seas
3 to 4 ft. wave detail: s 4 ft at 5 seconds and se 1 foot at
11 seconds. showers with a chance of tstms. 
.wed...s winds 15 to 20 kt with gusts up to 30 kt. seas 4 to
6 ft. wave detail: s 5 ft at 8 seconds and sw 3 ft at 4 seconds.
showers likely with a chance of tstms in the morning, then a
chance of showers in the afternoon. 
.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: s 5 ft at 9 seconds and sw 3 ft at
4 seconds. 
.thu through fri night...sw 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 200804
cwfbox
expires:202607202100;;278613

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
404 am edt mon jul 20 2026

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


anz254-202100-
coastal waters from provincetown ma to chatham ma to nantucket ma
out 20 nm-
404 am edt mon jul 20 2026

...gale watch in effect from tuesday afternoon through wednesday
evening...

.today...nw winds 5 to 10 kt, becoming s this afternoon. seas
2 to 3 ft. wave detail: s 3 ft at 8 seconds and nw 1 foot at
4 seconds. 
.tonight...s winds 5 to 10 kt. seas 2 to 3 ft. wave detail: s
3 ft at 8 seconds and nw 1 foot at 4 seconds. 
.tue...se winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
3 ft. wave detail: se 3 ft at 5 seconds and w 1 foot at
3 seconds. 
.tue night...s winds 15 to 20 kt, increasing to 20 to 25 kt after
midnight. gusts up to 30 kt. seas 3 to 4 ft, building to 5 to
7 ft after midnight. wave detail: s 4 ft at 5 seconds and e
1 foot at 11 seconds, becoming sw 7 ft at 6 seconds. showers with
a chance of tstms. 
.wed...sw winds 20 to 25 kt with gusts up to 35 kt. seas 6 to
9 ft. wave detail: s 9 ft at 9 seconds and e 5 ft at 10 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, subsiding to 5 to
7 ft after midnight. wave detail: s 8 ft at 9 seconds and se 5 ft
at 10 seconds, becoming s 7 ft at 9 seconds and se 4 ft at
10 seconds. a chance of showers. 
.thu...n winds 5 to 10 kt. seas 4 to 6 ft. a chance of showers. 
.thu night...e winds 5 to 10 kt. seas 3 to 5 ft. a chance of
showers. 
.fri...ne winds 5 to 10 kt. seas 2 to 3 ft. a chance of showers. 
.fri night...ne 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 200804
cwfbox
expires:202607202100;;278614

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
404 am edt mon jul 20 2026

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


anz255-202100-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
404 am edt mon jul 20 2026

...gale watch in effect from tuesday afternoon through wednesday
evening...

.today...n winds around 5 kt, becoming s this afternoon. seas
2 to 4 ft. wave detail: s 4 ft at 8 seconds and w 2 ft at
7 seconds. 
.tonight...s winds 5 to 10 kt. seas 2 to 3 ft. wave detail: s
3 ft at 8 seconds and w 1 foot at 8 seconds. 
.tue...se winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. gusts up to 25 kt. seas 2 to 3 ft. wave detail: sw
3 ft at 6 seconds and se 1 foot at 12 seconds. a chance of
showers in the afternoon. 
.tue night...s winds 20 to 25 kt with gusts up to 30 kt. seas
3 to 5 ft, building to 5 to 8 ft after midnight. wave detail: sw
5 ft at 7 seconds and e 1 foot at 11 seconds, becoming s 8 ft at
8 seconds and sw 3 ft at 7 seconds. showers with a chance of
tstms. 
.wed...sw winds around 25 kt with gusts up to 35 kt. seas 7 to
10 ft. wave detail: s 10 ft at 9 seconds and sw 4 ft at
4 seconds. showers. a chance of tstms 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 6 to 9 ft. wave detail: sw 9 ft
at 9 seconds and nw 2 ft at 5 seconds. a chance of showers. 
.thu...n winds around 10 kt. seas 4 to 6 ft. a chance of showers.
.thu night...e winds 5 to 10 kt. seas 3 to 5 ft. a chance of
showers. 
.fri...ne winds 5 to 10 kt. seas 2 to 4 ft. a chance of showers. 
.fri 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.

$$