fzus51 kbox 300806
cwfbox
expires:202603302100;;526664

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
406 am edt mon mar 30 2026

coastal waters from the merrimack river ma to watch hill ri out
to 25 nm


anz235-302100-
rhode island sound-
406 am edt mon mar 30 2026

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

.today...sw winds 20 to 25 kt, increasing to 25 to 30 kt this
afternoon. seas 4 to 6 ft, building to 5 to 8 ft this afternoon.
wave detail: sw 6 ft at 7 seconds and sw 1 foot at 4 seconds,
becoming sw 8 ft at 7 seconds and sw 2 ft at 4 seconds. a slight
chance of rain this afternoon. 
.tonight...sw winds 20 to 25 kt with gusts up to 30 kt. seas 5 to
7 ft. wave detail: sw 7 ft at 8 seconds and sw 2 ft at 4 seconds.
a chance of rain after midnight. 
.tue...sw winds 15 to 20 kt with gusts up to 25 kt. seas 4 to
6 ft. wave detail: s 6 ft at 8 seconds and sw 1 foot at
3 seconds. rain likely, mainly in the morning. 
.tue night...sw winds 25 to 30 kt with gusts up to 35 kt. seas
5 to 7 ft, building to 7 to 10 ft after midnight. wave detail: s
7 ft at 8 seconds and sw 1 foot at 4 seconds, becoming s 10 ft at
8 seconds and sw 2 ft at 4 seconds. 
.wed...sw winds 25 to 30 kt. seas 7 to 10 ft. wave detail: s
10 ft at 8 seconds and sw 2 ft at 5 seconds. a chance of rain in
the afternoon. 
.wed night...w winds 15 to 20 kt, becoming ne after midnight.
seas 5 to 7 ft. wave detail: s 7 ft at 8 seconds and ne 2 ft at
3 seconds. rain likely. 
.thu and thu night...ne winds 15 to 20 kt with gusts up to 25 kt.
seas 3 to 5 ft. a chance of rain. 
.fri and fri night...s winds 15 to 20 kt, becoming sw 20 to
25 kt. seas 2 to 4 ft. a chance of rain.  

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 300806
cwfbox
expires:202603302100;;526667

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
406 am edt mon mar 30 2026

coastal waters from the merrimack river ma to watch hill ri out
to 25 nm


anz236-302100-
narragansett bay-
406 am edt mon mar 30 2026

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

.today...sw winds 15 to 20 kt, increasing to 20 to 25 kt this
afternoon. gusts up to 30 kt. waves 2 to 4 ft. a slight chance of
rain this afternoon. 
.tonight...sw winds 15 to 20 kt, diminishing to 10 to 15 kt after
midnight. gusts up to 25 kt. waves 2 to 4 ft. a chance of rain
after midnight. 
.tue...sw winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. waves 2 to 4 ft. rain likely, mainly in the morning. 
.tue night...sw winds 15 to 20 kt, increasing to 20 to 25 kt
after midnight. gusts up to 30 kt. waves 3 to 5 ft. 
.wed...sw winds 20 to 25 kt with gusts up to 30 kt. waves 3 to
5 ft, except 5 to 7 ft at the bay entrance. a chance of rain in
the afternoon. 
.wed night...nw winds 10 to 15 kt, becoming ne after midnight.
gusts up to 20 kt. waves 3 to 5 ft. rain likely. 
.thu through fri night...sw winds 15 to 20 kt. waves 2 to 3 ft. a
chance of rain.  

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 300806
cwfbox
expires:202603302100;;526665

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
406 am edt mon mar 30 2026

coastal waters from the merrimack river ma to watch hill ri out
to 25 nm


anz237-302100-
block island sound-
406 am edt mon mar 30 2026

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

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

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 300806
cwfbox
expires:202603302100;;526659

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
406 am edt mon mar 30 2026

coastal waters from the merrimack river ma to watch hill ri out
to 25 nm


anz255-302100-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
406 am edt mon mar 30 2026

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

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

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.

$$