fzus51 kbox 301704
cwfbox
expires:202605010600;;790344

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 pm edt thu apr 30 2026

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


anz231-010600-
cape cod bay-
104 pm edt thu apr 30 2026

.this afternoon...w winds around 5 kt. seas 2 to 3 ft. wave
detail: ne 2 ft at 11 seconds and e 1 foot at 5 seconds. patchy
fog. a chance of showers. vsby 1 nm or less. 
.tonight...w winds 5 to 10 kt. seas 2 to 3 ft. wave detail: ne
2 ft at 11 seconds and sw 1 foot at 2 seconds. patchy fog. 
.fri...nw winds 5 to 10 kt. seas 2 to 3 ft. wave detail: nw
1 foot at 3 seconds and e 1 foot at 6 seconds. 
.fri night...w winds 5 to 10 kt. seas around 2 ft. wave detail:
sw 1 foot at 2 seconds and e 1 foot at 5 seconds. 
.sat...w winds around 5 kt, becoming s in the afternoon. seas
around 2 ft. wave detail: w 1 foot at 3 seconds and se 1 foot at
5 seconds. 
.sat night...s winds 5 to 10 kt, becoming sw after midnight. seas
around 2 ft. wave detail: s 1 foot at 2 seconds and se 1 foot at
6 seconds. a chance of rain in the evening, then rain likely
after midnight. 
.sun...n winds 5 to 10 kt. seas around 2 ft. a chance of rain. 
.sun night through mon 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 301704
cwfbox
expires:202605010600;;790348

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 pm edt thu apr 30 2026

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


anz232-010600-
nantucket sound-
104 pm edt thu apr 30 2026

.this afternoon...sw winds around 5 kt. seas 2 to 4 ft. wave
detail: e 2 ft at 5 seconds and e 2 ft at 10 seconds. patchy fog.
a chance of showers. vsby 1 nm or less. 
.tonight...w winds 5 to 10 kt. seas 2 to 4 ft. wave detail: e
2 ft at 5 seconds and e 2 ft at 10 seconds. patchy fog. vsby 1 to
3 nm. 
.fri...nw winds around 10 kt, becoming w in the afternoon. seas
2 to 4 ft. wave detail: w 2 ft at 3 seconds and e 2 ft at
5 seconds. 
.fri night...w winds 10 to 15 kt, diminishing to 5 to 10 kt after
midnight. seas 2 to 4 ft. wave detail: w 2 ft at 4 seconds and e
2 ft at 10 seconds. 
.sat...sw winds 5 to 10 kt. seas 2 to 3 ft. wave detail: w 1 foot
at 4 seconds and e 1 foot at 5 seconds. 
.sat night...s winds around 10 kt, becoming w after midnight.
seas 2 to 3 ft. wave detail: sw 1 foot at 3 seconds and e 1 foot
at 5 seconds. a chance of rain in the evening, then rain likely
after midnight. 
.sun...nw winds around 10 kt. seas 2 to 3 ft. rain likely. 
.sun night through mon 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 301704
cwfbox
expires:202605010600;;790349

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 pm edt thu apr 30 2026

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


anz233-010600-
vineyard sound-
104 pm edt thu apr 30 2026

.this afternoon...sw winds 5 to 10 kt. seas around 2 ft. wave
detail: sw 1 foot at 2 seconds and se 1 foot at 5 seconds. a
chance of showers. 
.tonight...w winds 5 to 10 kt. seas 2 to 3 ft. wave detail: sw
1 foot at 2 seconds and se 1 foot at 5 seconds. 
.fri...nw winds 5 to 10 kt, becoming sw 10 to 15 kt in the
afternoon. seas 2 to 3 ft. wave detail: sw 3 ft at 4 seconds and
se 1 foot at 7 seconds. 
.fri night...w winds 10 to 15 kt, diminishing to 5 to 10 kt after
midnight. seas 2 to 3 ft. wave detail: sw 3 ft at 5 seconds and e
1 foot at 8 seconds. 
.sat...sw winds 5 to 10 kt. seas around 2 ft. wave detail: sw
2 ft at 5 seconds and se 1 foot at 7 seconds. a chance of rain in
the afternoon. 
.sat night...s winds 5 to 10 kt, becoming w after midnight. seas
around 2 ft. wave detail: s 2 ft at 4 seconds and se 1 foot at
9 seconds. a chance of rain in the evening, then rain likely
after midnight. 
.sun...nw winds 10 to 15 kt. seas 2 to 3 ft. rain likely. 
.sun night through mon night...sw winds 20 to 25 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.

$$

fzus51 kbox 301704
cwfbox
expires:202605010600;;790350

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 pm edt thu apr 30 2026

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


anz234-010600-
buzzards bay-
104 pm edt thu apr 30 2026

.this afternoon...sw winds 5 to 10 kt. seas around 2 ft. wave
detail: s 1 foot at 2 seconds and se 1 foot at 5 seconds. patchy
fog. a chance of showers. 
.tonight...w winds 5 to 10 kt. seas around 2 ft. wave detail: sw
1 foot at 2 seconds and se 1 foot at 5 seconds. 
.fri...nw winds 5 to 10 kt, becoming sw 10 to 15 kt in the
afternoon. seas 2 to 3 ft. wave detail: sw 2 ft at 4 seconds and
e 1 foot at 7 seconds. 
.fri night...w winds 5 to 10 kt. seas around 2 ft. wave detail:
sw 2 ft at 4 seconds and e 1 foot at 9 seconds. 
.sat...sw winds 5 to 10 kt, becoming s 10 to 15 kt in the
afternoon. seas around 2 ft. wave detail: sw 2 ft at 4 seconds
and se 1 foot at 10 seconds. a chance of rain in the afternoon. 
.sat night...s winds 5 to 10 kt, becoming w after midnight. seas
around 2 ft. wave detail: s 2 ft at 5 seconds and se 1 foot at
10 seconds. a chance of rain in the evening, then rain likely
after midnight. 
.sun...nw winds 10 to 15 kt. seas around 2 ft. a chance of rain. 
.sun night...w winds 10 to 15 kt. seas around 2 ft. 
.mon and mon night...sw winds 15 to 20 kt, increasing to 20 to
25 kt. gusts up to 30 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.

$$

fzus51 kbox 301704
cwfbox
expires:202605010600;;790351

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 pm edt thu apr 30 2026

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


anz235-010600-
rhode island sound-
104 pm edt thu apr 30 2026

.this afternoon...sw winds 5 to 10 kt. seas 2 to 3 ft. wave
detail: se 3 ft at 10 seconds and s 2 ft at 4 seconds. patchy
fog. a chance of showers. 
.tonight...w winds 5 to 10 kt. seas 2 to 4 ft. wave detail: se
3 ft at 10 seconds and w 2 ft at 3 seconds. patchy fog after
midnight. 
.fri...nw winds around 10 kt, becoming sw in the afternoon. seas
3 to 4 ft. wave detail: sw 3 ft at 4 seconds and se 3 ft at
10 seconds. 
.fri night...w winds 10 to 15 kt, diminishing to 5 to 10 kt after
midnight. seas 2 to 4 ft. wave detail: sw 3 ft at 4 seconds and
se 3 ft at 10 seconds. 
.sat...w winds 5 to 10 kt, becoming s in the afternoon. seas 2 to
3 ft. wave detail: s 2 ft at 5 seconds and se 2 ft at 9 seconds.
a chance of rain in the afternoon. 
.sat night...s winds around 10 kt, becoming nw after midnight.
seas 2 to 3 ft. wave detail: s 2 ft at 4 seconds and se 2 ft at
9 seconds. a chance of rain in the evening, then rain likely
after midnight. 
.sun...nw winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
3 ft. a chance of rain. 
.sun night through mon night...sw winds 20 to 25 kt with gusts up
to 30 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.

$$

fzus51 kbox 301704
cwfbox
expires:202605010600;;790354

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 pm edt thu apr 30 2026

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


anz236-010600-
narragansett bay-
104 pm edt thu apr 30 2026

.this afternoon...sw winds around 5 kt. waves around 2 ft. a
chance of showers. 
.tonight...sw winds around 5 kt, becoming nw after midnight.
waves around 2 ft. 
.fri...nw winds 5 to 10 kt, becoming w in the afternoon. waves
around 2 ft. 
.fri night...w winds 5 to 10 kt. waves around 2 ft. 
.sat...w winds 5 to 10 kt, becoming s in the afternoon. waves
around 2 ft. a chance of rain in the afternoon. 
.sat night...s winds 5 to 10 kt, becoming nw after midnight.
waves around 2 ft. a chance of rain. 
.sun...nw winds 10 to 15 kt. waves around 2 ft. a chance of rain.
.sun night through mon night...sw winds 15 to 20 kt with gusts up
to 25 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 301704
cwfbox
expires:202605010600;;790342

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 pm edt thu apr 30 2026

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


anz250-010600-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
104 pm edt thu apr 30 2026

...small craft advisory in effect through friday morning...

.this afternoon...w winds around 5 kt. seas 4 to 6 ft. wave
detail: e 6 ft at 10 seconds and e 2 ft at 6 seconds. patchy fog.
a chance of showers. vsby 1 nm or less. 
.tonight...sw winds around 5 kt, becoming w after midnight. seas
4 to 6 ft. wave detail: e 6 ft at 10 seconds and ne 2 ft at
6 seconds. patchy fog. vsby 1 to 3 nm. 
.fri...w winds 5 to 10 kt. seas 4 to 5 ft. wave detail: e 5 ft at
10 seconds and sw 2 ft at 3 seconds. 
.fri night...w winds 5 to 10 kt. seas 3 to 4 ft. wave detail: e
4 ft at 9 seconds and w 2 ft at 3 seconds. 
.sat...w winds around 5 kt, becoming s in the afternoon. seas
3 to 4 ft. wave detail: e 4 ft at 9 seconds and w 1 foot at
4 seconds. 
.sat night...s winds around 10 kt, becoming sw after midnight.
seas 3 to 4 ft. wave detail: e 4 ft at 10 seconds and s 2 ft at
4 seconds. a chance of rain. 
.sun...n winds around 10 kt. seas around 3 ft. a chance of rain. 
.sun night through mon night...sw winds 15 to 20 kt with gusts up
to 30 kt. seas 3 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.

$$

fzus51 kbox 301704
cwfbox
expires:202605010600;;790345

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 pm edt thu apr 30 2026

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


anz254-010600-
coastal waters from provincetown ma to chatham ma to nantucket ma
out 20 nm-
104 pm edt thu apr 30 2026

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

.this afternoon...sw winds around 5 kt. seas 5 to 6 ft. wave
detail: e 6 ft at 10 seconds and e 3 ft at 5 seconds. patchy fog.
a chance of showers. vsby 1 nm or less. 
.tonight...w winds 5 to 10 kt. seas 4 to 6 ft. wave detail: e
6 ft at 10 seconds and e 3 ft at 5 seconds. patchy fog. vsby 1 nm
or less, increasing to 1 to 3 nm after midnight. 
.fri...nw winds 5 to 10 kt. seas 4 to 5 ft. wave detail: e 5 ft
at 10 seconds and e 3 ft at 5 seconds. patchy fog in the morning
with vsby 1 to 3 nm. 
.fri night...w winds 5 to 10 kt. seas 3 to 5 ft. wave detail: e
5 ft at 9 seconds and sw 2 ft at 4 seconds. 
.sat...w winds 5 to 10 kt, becoming s in the afternoon. seas 3 to
4 ft. wave detail: e 4 ft at 9 seconds and sw 1 foot at
6 seconds. 
.sat night...s winds 5 to 10 kt. seas 3 to 4 ft. wave detail: e
4 ft at 10 seconds and s 2 ft at 5 seconds. a chance of rain in
the evening, then rain likely after midnight. 
.sun...nw winds around 10 kt. seas 3 to 4 ft. rain likely. 
.sun night through mon night...sw winds 15 to 20 kt with gusts up
to 25 kt. seas 3 to 5 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 301704
cwfbox
expires:202605010600;;790346

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 pm edt thu apr 30 2026

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


anz255-010600-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
104 pm edt thu apr 30 2026

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

.this afternoon...sw winds around 5 kt. seas 4 to 6 ft. wave
detail: se 5 ft at 10 seconds and se 3 ft at 5 seconds. patchy
fog. a chance of showers. vsby 1 nm or less. 
.tonight...w winds 5 to 10 kt. seas 3 to 5 ft. wave detail: se
5 ft at 10 seconds and w 2 ft at 5 seconds. patchy fog. vsby 1 nm
or less, increasing to 1 to 3 nm after midnight. 
.fri...w winds around 10 kt. seas 4 to 5 ft. wave detail: se 5 ft
at 10 seconds and w 3 ft at 4 seconds. 
.fri night...w winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. seas 3 to 5 ft. wave
detail: se 4 ft at 9 seconds and w 3 ft at 5 seconds. 
.sat...w winds 5 to 10 kt, becoming s in the afternoon. seas 3 to
4 ft. wave detail: se 3 ft at 9 seconds and sw 2 ft at 5 seconds.
.sat night...s winds around 10 kt, becoming ne after midnight.
seas 3 to 4 ft. wave detail: se 3 ft at 10 seconds and s 2 ft at
6 seconds. rain likely. 
.sun...nw winds 10 to 15 kt with gusts up to 20 kt. seas 3 to
4 ft. rain likely. 
.sun night...w winds 15 to 20 kt. seas 4 to 6 ft. 
.mon and mon night...sw winds 15 to 20 kt, increasing to 20 to
25 kt. gusts up to 30 kt. seas 3 to 5 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.

$$