fzus51 kbox 200804
cwfbox
expires:202606202100;;059611

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

...small craft advisory in effect until 4 pm edt this afternoon...

.today...w winds 15 to 20 kt, diminishing to 10 to 15 kt this
afternoon. gusts up to 25 kt. seas 2 to 4 ft. wave detail: w 2 ft
at 4 seconds and e 2 ft at 8 seconds. a slight chance of showers
this afternoon. 
.tonight...w winds 5 to 10 kt. gusts up to 20 kt in the evening.
seas around 2 ft in the evening, then 1 foot or less. wave
detail: nw 1 foot at 4 seconds and se 1 foot at 8 seconds,
becoming nw 1 foot at 4 seconds and ne 1 foot at 7 seconds. 
.sun...sw winds 5 to 10 kt. seas 1 foot or less, then around 2 ft
in the afternoon. wave detail: n 1 foot at 4 seconds and s 1 foot
at 9 seconds, becoming w 1 foot at 3 seconds and n 1 foot at
5 seconds. 
.sun night...sw winds 5 to 10 kt, becoming w after midnight. seas
1 foot or less. wave detail: sw 1 foot at 3 seconds and ne 1 foot
at 4 seconds. 
.mon...sw winds around 5 kt, becoming s 10 to 15 kt with gusts up
to 20 kt in the afternoon. seas 1 foot or less, then 2 to 3 ft in
the afternoon. wave detail: w 1 foot at 3 seconds and se 1 foot
at 5 seconds, becoming sw 1 foot at 3 seconds and se 1 foot at
5 seconds. showers likely in the afternoon. 
.mon night...s winds 15 to 20 kt with 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. showers with a chance of tstms. 
.tue...nw winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
3 ft. a chance of showers and tstms. 
.tue night through wed night...s winds around 5 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:202606202100;;059615

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

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


anz232-202100-
nantucket sound-
404 am edt sat jun 20 2026

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

.today...w winds 20 to 25 kt, diminishing to 15 to 20 kt this
afternoon. gusts up to 30 kt. seas 2 to 4 ft. wave detail: w 4 ft
at 4 seconds and s 2 ft at 8 seconds. 
.tonight...w winds 15 to 20 kt with gusts up to 25 kt,
diminishing to 5 to 10 kt after midnight. seas 2 to 4 ft. wave
detail: w 3 ft at 4 seconds and s 2 ft at 8 seconds. 
.sun...w winds 5 to 10 kt, becoming sw 10 to 15 kt with gusts up
to 20 kt in the afternoon. seas around 2 ft. wave detail: sw 2 ft
at 3 seconds and e 1 foot at 4 seconds. 
.sun night...sw winds 10 to 15 kt, becoming w 5 to 10 kt after
midnight. seas around 2 ft. wave detail: sw 2 ft at 3 seconds and
s 1 foot at 8 seconds. 
.mon...sw winds 5 to 10 kt, becoming s 10 to 15 kt with gusts up
to 20 kt in the afternoon. seas 2 to 3 ft. wave detail: se 2 ft
at 8 seconds and sw 1 foot at 4 seconds. showers likely in the
afternoon. 
.mon night...s winds 20 to 25 kt with gusts up to 30 kt. seas
3 to 5 ft. wave detail: s 4 ft at 5 seconds and e 1 foot at
12 seconds. showers with a chance of tstms. 
.tue...w winds 15 to 20 kt with gusts up to 25 kt. seas 3 to
5 ft. showers with a chance of tstms. 
.tue night through wed night...sw 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:202606202100;;059616

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

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


anz233-202100-
vineyard sound-
404 am edt sat jun 20 2026

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

.today...w winds 15 to 20 kt with gusts up to 30 kt. seas 3 to
4 ft. wave detail: sw 4 ft at 6 seconds and e 1 foot at
6 seconds. 
.tonight...w winds 10 to 15 kt with gusts up to 25 kt,
diminishing to 5 to 10 kt after midnight. seas 2 to 4 ft. wave
detail: sw 4 ft at 7 seconds and e 1 foot at 10 seconds. 
.sun...w winds 5 to 10 kt, becoming sw 10 to 15 kt with gusts up
to 20 kt in the afternoon. seas 2 to 3 ft. wave detail: sw 2 ft
at 4 seconds and sw 2 ft at 8 seconds. 
.sun night...sw winds 10 to 15 kt with gusts up to 20 kt,
becoming w 5 to 10 kt after midnight. seas 2 to 3 ft. wave
detail: sw 3 ft at 5 seconds and sw 2 ft at 8 seconds. 
.mon...sw winds 5 to 10 kt, becoming se 15 to 20 kt with gusts up
to 25 kt in the afternoon. seas 2 to 3 ft. wave detail: s 3 ft at
8 seconds and s 2 ft at 8 seconds. a chance of showers in the
morning, then showers likely in the afternoon. 
.mon night...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. showers with a
chance of tstms. 
.tue...w winds 10 to 15 kt with gusts up to 20 kt. seas 3 to
5 ft. showers likely with a chance of tstms. 
.tue night through wed night...sw 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:202606202100;;059617

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

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


anz234-202100-
buzzards bay-
404 am edt sat jun 20 2026

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

.today...w winds 15 to 20 kt with gusts up to 30 kt. seas 2 to
4 ft. wave detail: w 3 ft at 4 seconds and sw 3 ft at 7 seconds. 
.tonight...w winds 10 to 15 kt with gusts up to 25 kt,
diminishing to 5 to 10 kt after midnight. seas 2 to 3 ft. wave
detail: sw 3 ft at 5 seconds and sw 3 ft at 8 seconds. 
.sun...w winds 5 to 10 kt, becoming sw 10 to 15 kt with gusts up
to 20 kt in the afternoon. seas 2 to 3 ft. wave detail: sw 2 ft
at 4 seconds and sw 2 ft at 8 seconds. 
.sun night...sw winds 10 to 15 kt with gusts up to 20 kt,
becoming w around 5 kt after midnight. seas around 2 ft. wave
detail: sw 2 ft at 4 seconds and se 2 ft at 8 seconds. 
.mon...sw winds around 5 kt, becoming se 15 to 20 kt with gusts
up to 25 kt in the afternoon. seas 1 foot or less, then 2 to 3 ft
in the afternoon. wave detail: sw 1 foot at 4 seconds and s
1 foot at 7 seconds, becoming s 2 ft at 7 seconds and sw 1 foot
at 4 seconds. a chance of showers in the morning, then showers
likely in the afternoon. 
.mon night...s winds 20 to 25 kt with gusts up to 30 kt. seas
3 to 4 ft. wave detail: sw 4 ft at 7 seconds and s 3 ft at
4 seconds. showers with a chance of tstms. 
.tue...w winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
4 ft. showers likely. 
.tue night through wed night...sw 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:202606202100;;059618

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

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

.today...w 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 w 3 ft at 5 seconds. 
.tonight...w winds 15 to 20 kt with gusts up to 25 kt,
diminishing to 5 to 10 kt after midnight. seas 2 to 4 ft. wave
detail: sw 4 ft at 9 seconds and w 3 ft at 5 seconds. 
.sun...w winds 5 to 10 kt, becoming sw 10 to 15 kt with gusts up
to 20 kt in the afternoon. seas 2 to 3 ft. wave detail: sw 3 ft
at 4 seconds and se 3 ft at 7 seconds. 
.sun night...sw winds 10 to 15 kt with gusts up to 20 kt,
becoming w 5 to 10 kt after midnight. seas 2 to 3 ft. wave
detail: sw 3 ft at 4 seconds and s 3 ft at 8 seconds. 
.mon...sw winds 5 to 10 kt, becoming se 15 to 20 kt with gusts up
to 25 kt in the afternoon. seas 2 to 3 ft. wave detail: s 3 ft at
7 seconds. a chance of showers in the morning, then showers
likely in the afternoon. 
.mon night...s winds 20 to 25 kt with gusts up to 30 kt. seas
4 to 6 ft. wave detail: s 6 ft at 6 seconds. showers with a
chance of tstms. 
.tue...w winds 10 to 15 kt with gusts up to 20 kt. seas 3 to
5 ft. a chance of showers. 
.tue night through wed 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:202606202100;;059621

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

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


anz236-202100-
narragansett bay-
404 am edt sat jun 20 2026

...small craft advisory in effect until 4 pm edt this afternoon...

.today...w winds 15 to 20 kt with gusts up to 25 kt. waves 2 to
3 ft. 
.tonight...w winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. waves 2 to 3 ft. 
.sun...w winds 5 to 10 kt, becoming sw 10 to 15 kt with gusts up
to 20 kt in the afternoon. waves around 2 ft. 
.sun night...sw winds 5 to 10 kt, becoming w after midnight.
waves around 2 ft. 
.mon...sw winds around 5 kt, becoming se 10 to 15 kt with gusts
up to 25 kt in the afternoon. waves 1 foot or less, then 2 to
3 ft in the afternoon. a chance of showers in the morning, then
showers in the afternoon. 
.mon night...s winds 15 to 20 kt with gusts up to 25 kt. waves
2 to 4 ft. showers. a chance of tstms in the evening. 
.tue...nw winds 10 to 15 kt. waves 2 to 3 ft. a chance of
showers. 
.tue night through wed night...sw 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:202606202100;;059609

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

...small craft advisory in effect until 4 pm edt this afternoon...

.today...w winds 15 to 20 kt, diminishing to 10 to 15 kt this
afternoon. gusts up to 30 kt. seas 2 to 4 ft. wave detail: w 3 ft
at 4 seconds and se 2 ft at 8 seconds. a slight chance of showers
this afternoon. 
.tonight...w winds 5 to 10 kt. gusts up to 20 kt in the evening.
seas around 2 ft. wave detail: w 2 ft at 4 seconds and n 2 ft at
5 seconds. 
.sun...w winds 5 to 10 kt, becoming s in the afternoon. seas
around 2 ft. wave detail: se 2 ft at 9 seconds and w 1 foot at
3 seconds. 
.sun night...w winds around 5 kt. seas around 2 ft. wave detail:
ne 2 ft at 3 seconds and sw 1 foot at 2 seconds. 
.mon...sw winds around 5 kt, becoming s 10 to 15 kt with gusts up
to 20 kt in the afternoon. seas 1 foot or less, then around 2 ft
in the afternoon. wave detail: nw 1 foot at 2 seconds and e
1 foot at 4 seconds, becoming w 1 foot at 2 seconds and se 1 foot
at 7 seconds. showers likely in the afternoon. 
.mon night...se winds 15 to 20 kt with gusts up to 30 kt. seas
2 to 4 ft. wave detail: s 4 ft at 5 seconds. showers. a chance of
tstms in the evening. 
.tue...nw winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
4 ft. a chance of showers. 
.tue night through wed night...s 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:202606202100;;059612

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

...small craft advisory in effect through late tonight...

.today...w winds 15 to 20 kt with gusts up to 30 kt. seas 4 to
6 ft. wave detail: w 4 ft at 5 seconds and s 4 ft at 8 seconds. 
.tonight...w winds 15 to 20 kt with gusts up to 25 kt,
diminishing to 5 to 10 kt after midnight. seas 3 to 5 ft. wave
detail: s 4 ft at 9 seconds and w 3 ft at 5 seconds. 
.sun...w winds 5 to 10 kt, becoming sw 10 to 15 kt with gusts up
to 20 kt in the afternoon. seas 2 to 3 ft. wave detail: s 3 ft at
9 seconds and nw 1 foot at 4 seconds. 
.sun night...sw winds 5 to 10 kt. seas 2 to 3 ft. wave detail: s
3 ft at 8 seconds and e 2 ft at 4 seconds. 
.mon...sw winds 5 to 10 kt, becoming s 10 to 15 kt with gusts up
to 20 kt in the afternoon. seas 2 to 3 ft. wave detail: se 2 ft
at 7 seconds and w 1 foot at 3 seconds. a chance of showers in
the afternoon. 
.mon night...s winds 20 to 25 kt with gusts up to 30 kt. seas
4 to 6 ft. wave detail: s 6 ft at 7 seconds and e 1 foot at
12 seconds. showers with a chance of tstms. 
.tue...w winds 15 to 20 kt with gusts up to 25 kt. seas 4 to
6 ft. showers with a chance of tstms. 
.tue night...w winds 5 to 10 kt. seas 3 to 5 ft. 
.wed and wed night...nw winds 5 to 10 kt, becoming sw. 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:202606202100;;059613

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

...small craft advisory in effect through late tonight...

.today...w winds 20 to 25 kt with gusts up to 30 kt. seas 5 to
6 ft. wave detail: sw 6 ft at 7 seconds and e 1 foot at
7 seconds. 
.tonight...w winds 15 to 20 kt with gusts up to 30 kt,
diminishing to 5 to 10 kt after midnight. seas 4 to 6 ft. wave
detail: sw 6 ft at 7 seconds and e 1 foot at 6 seconds. 
.sun...w winds 10 to 15 kt. gusts up to 20 kt in the afternoon.
seas 3 to 4 ft. wave detail: sw 4 ft at 8 seconds and nw 2 ft at
4 seconds. 
.sun night...sw winds 10 to 15 kt, becoming w 5 to 10 kt after
midnight. seas 2 to 3 ft. wave detail: sw 3 ft at 8 seconds and w
1 foot at 5 seconds. 
.mon...sw winds 5 to 10 kt, becoming s 15 to 20 kt with gusts up
to 25 kt in the afternoon. seas 2 to 3 ft. wave detail: s 3 ft at
7 seconds and sw 2 ft at 4 seconds. a chance of showers in the
afternoon. 
.mon night...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 e 4 ft at
8 seconds. showers with a chance of tstms. 
.tue...w winds 15 to 20 kt with gusts up to 25 kt. seas 4 to
6 ft. showers with a chance of tstms. 
.tue night...w winds 5 to 10 kt. seas 3 to 5 ft. 
.wed and wed night...w winds 5 to 10 kt, becoming sw. 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.

$$