fzus51 kbox 310804
cwfbox
expires:202607312100;;378367

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
404 am edt fri jul 31 2026

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


anz231-312100-
cape cod bay-
404 am edt fri jul 31 2026

.today...n winds around 5 kt. seas around 2 ft. wave detail: n
2 ft at 5 seconds and se 1 foot at 11 seconds. 
.tonight...sw winds 5 to 10 kt. seas around 2 ft. wave detail: sw
1 foot at 4 seconds and n 1 foot at 5 seconds. 
.sat...sw winds around 5 kt, becoming s in the afternoon. seas
1 foot or less, then around 2 ft in the afternoon. wave detail:
sw 1 foot at 2 seconds and ne 1 foot at 4 seconds, becoming sw
1 foot at 3 seconds and ne 1 foot at 4 seconds. 
.sat night...s winds 5 to 10 kt. seas around 2 ft. wave detail: s
1 foot at 2 seconds and ne 1 foot at 4 seconds. 
.sun...s winds 5 to 10 kt. gusts up to 20 kt in the afternoon.
seas around 2 ft. wave detail: s 1 foot at 2 seconds and e 1 foot
at 6 seconds. 
.sun night...s winds 5 to 10 kt. seas around 2 ft. wave detail: s
1 foot at 2 seconds and e 1 foot at 8 seconds. a chance of
showers after midnight. 
.mon through tue...sw winds 10 to 15 kt with gusts up to 25 kt.
seas 2 to 3 ft. a chance of showers. 
.tue night...sw winds 5 to 10 kt. seas 1 foot or less.  

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 310804
cwfbox
expires:202607312100;;378371

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
404 am edt fri jul 31 2026

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


anz232-312100-
nantucket sound-
404 am edt fri jul 31 2026

.today...nw winds 5 to 10 kt, becoming w this afternoon. seas
2 to 3 ft. wave detail: e 2 ft at 6 seconds and nw 1 foot at
3 seconds. 
.tonight...sw winds 5 to 10 kt. seas around 2 ft. wave detail: sw
1 foot at 4 seconds and e 1 foot at 7 seconds. patchy fog after
midnight with vsby 1 nm or less. 
.sat...sw winds 5 to 10 kt. seas around 2 ft. wave detail: sw
2 ft at 4 seconds and ne 1 foot at 6 seconds. patchy fog in the
morning with vsby 1 nm or less. 
.sat night...sw winds around 10 kt. seas around 2 ft. wave
detail: sw 2 ft at 3 seconds and s 1 foot at 8 seconds. 
.sun...s winds around 10 kt. seas around 2 ft. wave detail: s
1 foot at 3 seconds and e 1 foot at 8 seconds. 
.sun night...s winds 10 to 15 kt. gusts up to 20 kt after
midnight. seas around 2 ft. wave detail: s 2 ft at 3 seconds and
s 1 foot at 7 seconds. a chance of showers after midnight. 
.mon through tue...sw winds 15 to 20 kt with gusts up to 25 kt.
seas 2 to 3 ft. a chance of showers. 
.tue night...sw winds 10 to 15 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 310804
cwfbox
expires:202607312100;;378372

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
404 am edt fri jul 31 2026

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


anz233-312100-
vineyard sound-
404 am edt fri jul 31 2026

.today...nw winds around 5 kt, becoming sw this afternoon. seas
2 to 3 ft. wave detail: sw 2 ft at 9 seconds and ne 1 foot at
5 seconds. 
.tonight...sw winds 5 to 10 kt. seas around 2 ft. wave detail: sw
2 ft at 8 seconds and e 1 foot at 5 seconds. patchy fog after
midnight with vsby 1 nm or less. 
.sat...sw winds 5 to 10 kt. seas around 2 ft. wave detail: sw
2 ft at 3 seconds and sw 2 ft at 9 seconds. patchy fog in the
morning with vsby 1 to 3 nm. 
.sat night...sw winds 5 to 10 kt. seas around 2 ft. wave detail:
sw 2 ft at 4 seconds and sw 2 ft at 8 seconds. 
.sun...s winds 5 to 10 kt. seas around 2 ft. wave detail: sw 2 ft
at 5 seconds and sw 1 foot at 8 seconds. 
.sun night...s winds 10 to 15 kt. gusts up to 20 kt after
midnight. seas around 2 ft. wave detail: s 2 ft at 4 seconds and
s 1 foot at 7 seconds. a chance of showers after midnight. 
.mon...sw winds 15 to 20 kt with gusts up to 25 kt. seas 2 to
4 ft. showers likely. 
.mon night and tue...sw winds 15 to 20 kt with gusts up to 25 kt,
diminishing to 5 to 10 kt. seas 2 to 3 ft. a chance of showers. 
.tue night...sw winds 5 to 10 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 310804
cwfbox
expires:202607312100;;378373

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
404 am edt fri jul 31 2026

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


anz234-312100-
buzzards bay-
404 am edt fri jul 31 2026

.today...nw winds around 5 kt, becoming sw this afternoon. seas
around 2 ft. wave detail: sw 1 foot at 4 seconds and ne 1 foot at
5 seconds. a slight chance of showers and tstms this afternoon. 
.tonight...sw winds 5 to 10 kt. seas around 2 ft. wave detail: sw
1 foot at 3 seconds and e 1 foot at 5 seconds. patchy fog after
midnight with vsby 1 nm or less. 
.sat...sw winds around 5 kt, increasing to 10 to 15 kt with gusts
up to 20 kt in the afternoon. seas around 2 ft. wave detail: sw
2 ft at 4 seconds and e 1 foot at 8 seconds. patchy fog in the
morning with vsby 1 to 3 nm. 
.sat night...sw winds 5 to 10 kt. seas around 2 ft. wave detail:
sw 2 ft at 4 seconds and e 1 foot at 5 seconds. 
.sun...s winds 5 to 10 kt. gusts up to 20 kt in the afternoon.
seas around 2 ft. wave detail: sw 1 foot at 4 seconds and s
1 foot at 8 seconds. 
.sun night...s winds 10 to 15 kt. gusts up to 20 kt after
midnight. seas around 2 ft. wave detail: s 2 ft at 4 seconds and
s 1 foot at 7 seconds. a chance of showers after midnight. 
.mon...sw winds 15 to 20 kt with gusts up to 30 kt. seas 2 to
4 ft. showers likely. 
.mon night and tue...sw winds 15 to 20 kt with gusts up to 25 kt,
diminishing to 5 to 10 kt. seas 2 to 3 ft. a chance of showers. 
.tue 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 310804
cwfbox
expires:202607312100;;378374

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
404 am edt fri jul 31 2026

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


anz235-312100-
rhode island sound-
404 am edt fri jul 31 2026

.today...nw winds around 5 kt, becoming sw this afternoon. seas
2 to 3 ft. wave detail: s 3 ft at 9 seconds and sw 2 ft at
4 seconds. a slight chance of showers and tstms this afternoon. 
.tonight...sw winds 5 to 10 kt. seas 2 to 3 ft. wave detail: se
3 ft at 7 seconds and sw 1 foot at 7 seconds. patchy fog after
midnight with vsby 1 nm or less. 
.sat...sw winds around 5 kt, increasing to 10 to 15 kt in the
afternoon. seas 2 to 3 ft. wave detail: s 3 ft at 9 seconds and
sw 2 ft at 4 seconds. patchy fog. vsby 1 to 3 nm. 
.sat night...s winds 5 to 10 kt. seas 2 to 3 ft. wave detail: s
3 ft at 8 seconds and sw 2 ft at 4 seconds. 
.sun...s winds 5 to 10 kt. seas 2 to 3 ft. wave detail: s 3 ft at
8 seconds and sw 2 ft at 5 seconds. 
.sun night...s winds 10 to 15 kt. gusts up to 20 kt after
midnight. seas 2 to 3 ft. wave detail: s 3 ft at 4 seconds and s
2 ft at 7 seconds. showers likely with a chance of tstms after
midnight. 
.mon...sw winds 15 to 20 kt with gusts up to 25 kt. seas 2 to
4 ft. showers likely. 
.mon night...sw winds 15 to 20 kt with gusts up to 25 kt. seas
3 to 4 ft. a chance of showers and tstms. 
.tue...sw winds 10 to 15 kt. seas 2 to 4 ft. a chance of showers.
.tue night...sw winds 10 to 15 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 310804
cwfbox
expires:202607312100;;378377

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
404 am edt fri jul 31 2026

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


anz236-312100-
narragansett bay-
404 am edt fri jul 31 2026

.today...nw winds around 5 kt, becoming s this afternoon. waves
around 2 ft. a slight chance of showers and tstms this afternoon.
.tonight...sw winds 5 to 10 kt. waves around 2 ft. 
.sat...sw winds around 5 kt, becoming s in the afternoon. waves
around 2 ft. patchy fog in the morning. 
.sat night...s winds 5 to 10 kt. waves around 2 ft.
.sun...s winds 5 to 10 kt, increasing to 10 to 15 kt in the
afternoon. waves around 2 ft. 
.sun night...s winds 5 to 10 kt, increasing to 10 to 15 kt after
midnight. waves around 2 ft. a chance of showers after midnight. 
.mon...sw winds 15 to 20 kt with gusts up to 25 kt. waves 2 to
3 ft. showers likely with a chance of tstms. 
.mon night...sw winds 10 to 15 kt with gusts up to 20 kt. waves
2 to 3 ft. a chance of showers and tstms. 
.tue...sw winds 5 to 10 kt. waves 2 to 3 ft. a chance of showers.
.tue night...sw winds 5 to 10 kt. waves around 2 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 310804
cwfbox
expires:202607312100;;378365

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
404 am edt fri jul 31 2026

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


anz250-312100-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
404 am edt fri jul 31 2026

.today...n winds 5 to 10 kt, becoming sw this afternoon. seas
2 to 4 ft. wave detail: e 3 ft at 6 seconds and se 3 ft at
10 seconds. 
.tonight...sw winds 5 to 10 kt. seas 2 to 3 ft. wave detail: ne
2 ft at 6 seconds and se 2 ft at 9 seconds. 
.sat...sw winds around 5 kt, becoming s in the afternoon. seas
around 2 ft. wave detail: se 2 ft at 9 seconds and sw 1 foot at
2 seconds. patchy fog. vsby 1 nm or less. 
.sat night...s winds 5 to 10 kt. seas 2 to 3 ft. wave detail: s
2 ft at 3 seconds and se 2 ft at 9 seconds. 
.sun...s winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 20 kt in the afternoon. seas 2 to 3 ft. wave detail: s 2 ft
at 3 seconds and se 2 ft at 7 seconds. 
.sun night...s winds 10 to 15 kt. gusts up to 20 kt in the
evening. seas 2 to 3 ft. wave detail: s 2 ft at 4 seconds and se
2 ft at 8 seconds. a chance of showers after midnight. 
.mon and mon night...sw winds 10 to 15 kt with gusts up to 20 kt.
seas 2 to 3 ft. a chance of showers. 
.tue and tue night...sw 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 310804
cwfbox
expires:202607312100;;378368

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
404 am edt fri jul 31 2026

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


anz254-312100-
coastal waters from provincetown ma to chatham ma to nantucket ma
out 20 nm-
404 am edt fri jul 31 2026

.today...nw winds 5 to 10 kt. seas 3 to 4 ft. wave detail: se
4 ft at 9 seconds and ne 3 ft at 6 seconds. 
.tonight...sw winds 5 to 10 kt. seas 2 to 4 ft. wave detail: se
3 ft at 9 seconds and ne 2 ft at 6 seconds. patchy fog after
midnight with vsby 1 nm or less. 
.sat...sw winds 5 to 10 kt. seas 2 to 3 ft. wave detail: se 3 ft
at 9 seconds and sw 1 foot at 3 seconds. patchy fog in the
morning with vsby 1 nm or less. 
.sat night...s winds 5 to 10 kt. seas 2 to 3 ft. wave detail: s
3 ft at 8 seconds and sw 1 foot at 3 seconds. 
.sun...s winds 5 to 10 kt. seas 2 to 3 ft. wave detail: se 3 ft
at 7 seconds and sw 1 foot at 3 seconds. 
.sun night...s winds 10 to 15 kt. seas 2 to 3 ft. wave detail: s
3 ft at 7 seconds and sw 2 ft at 3 seconds. a chance of showers
after midnight. 
.mon through tue...sw winds 15 to 20 kt with gusts up to 25 kt.
seas 2 to 4 ft. a chance of showers. 
.tue night...sw 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 310804
cwfbox
expires:202607312100;;378369

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
404 am edt fri jul 31 2026

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


anz255-312100-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
404 am edt fri jul 31 2026

.today...nw winds 5 to 10 kt, becoming w this afternoon. seas
3 to 4 ft. wave detail: s 4 ft at 9 seconds and nw 2 ft at
4 seconds. 
.tonight...sw winds 5 to 10 kt. seas 3 to 4 ft. wave detail: s
3 ft at 8 seconds and e 2 ft at 6 seconds. patchy fog. vsby 1 to
3 nm, decreasing to 1 nm or less after midnight. 
.sat...sw winds 5 to 10 kt. seas 3 to 4 ft. wave detail: s 3 ft
at 9 seconds and sw 2 ft at 4 seconds. patchy fog. vsby 1 nm or
less, increasing to 1 to 3 nm in the afternoon. 
.sat night...s winds 5 to 10 kt. seas 2 to 3 ft. wave detail: s
3 ft at 8 seconds and sw 2 ft at 4 seconds. 
.sun...s winds 5 to 10 kt. seas 2 to 3 ft. wave detail: s 3 ft at
8 seconds and sw 2 ft at 3 seconds. 
.sun night...s winds 10 to 15 kt. gusts up to 20 kt after
midnight. seas 2 to 3 ft. wave detail: s 3 ft at 4 seconds and se
3 ft at 7 seconds. showers likely after midnight. 
.mon...sw winds 15 to 20 kt with gusts up to 25 kt. seas 3 to
5 ft. showers likely. 
.mon night and tue...sw winds 15 to 20 kt with gusts up to 25 kt,
diminishing to around 10 kt. seas 3 to 5 ft. a chance of showers.
.tue night...sw winds 5 to 10 kt. seas 2 to 4 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.

$$