fzus51 kbox 302004
cwfbox
expires:202603310900;;554023

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

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


anz231-310900-
cape cod bay-
403 pm edt mon mar 30 2026

...small craft advisory in effect until 11 pm edt this evening...

.tonight...sw winds 15 to 20 kt with gusts up to 25 kt. seas 2 to
3 ft. wave detail: sw 3 ft at 4 seconds and e 1 foot at
8 seconds. a chance of showers after midnight. 
.tue...sw winds 15 to 20 kt with gusts up to 25 kt. seas around
2 ft. wave detail: sw 2 ft at 3 seconds and e 1 foot at
9 seconds. showers likely in the morning. 
.tue night...sw winds 15 to 20 kt, increasing to 20 to 25 kt
after midnight. gusts up to 30 kt. seas 2 to 3 ft. wave detail:
sw 3 ft at 4 seconds. 
.wed...sw winds 20 to 25 kt, diminishing to 15 to 20 kt in the
afternoon. seas 2 to 4 ft. wave detail: sw 3 ft at 4 seconds and
ne 1 foot at 6 seconds. a chance of showers in the morning, then
showers likely in the afternoon. 
.wed night...ne winds 10 to 15 kt with gusts up to 20 kt. seas
2 to 3 ft. wave detail: n 2 ft at 4 seconds. showers likely,
mainly in the evening. 
.thu...ne winds around 15 kt with gusts up to 20 kt. seas 2 to
3 ft. wave detail: ne 3 ft at 4 seconds and w 1 foot at
3 seconds. a chance of showers in the afternoon. 
.thu night...e winds 10 to 15 kt. gusts up to 20 kt in the
evening. seas 2 to 3 ft. a chance of rain. 
.fri through sat night...e winds 15 to 20 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 302004
cwfbox
expires:202603310900;;554027

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

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


anz232-310900-
nantucket sound-
403 pm edt mon mar 30 2026

...small craft advisory in effect until 2 am edt tuesday...

.tonight...sw winds 20 to 25 kt with gusts up to 30 kt. seas 4 to
6 ft. wave detail: sw 5 ft at 5 seconds and e 1 foot at
8 seconds. a chance of showers after midnight. 
.tue...sw winds 15 to 20 kt with gusts up to 25 kt. seas 2 to
4 ft. wave detail: sw 4 ft at 5 seconds and se 1 foot at
8 seconds. showers likely in the morning. a chance of showers in
the afternoon. 
.tue night...sw winds 20 to 25 kt with gusts up to 30 kt. seas
4 to 6 ft. wave detail: s 5 ft at 6 seconds. patchy fog in the
evening with vsby 1 nm or less. 
.wed...sw winds 20 to 25 kt with gusts up to 30 kt. seas 5 to
7 ft. wave detail: sw 5 ft at 5 seconds. a chance of showers in
the afternoon. 
.wed night...nw winds 10 to 15 kt, becoming ne after midnight.
gusts up to 20 kt. seas 3 to 5 ft, subsiding to 2 to 3 ft after
midnight. wave detail: w 3 ft at 6 seconds and e 1 foot at
6 seconds, becoming ne 2 ft at 3 seconds and sw 2 ft at
7 seconds. showers likely, mainly in the evening. 
.thu...ne winds 15 to 20 kt. seas 2 to 3 ft. wave detail: ne 3 ft
at 4 seconds and s 2 ft at 7 seconds. a chance of showers. 
.thu night...e winds 10 to 15 kt. gusts up to 20 kt in the
evening. seas 2 to 3 ft. a chance of rain in the evening. 
.fri...s winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
3 ft. 
.fri night...sw winds 15 to 20 kt with gusts up to 25 kt. seas
2 to 4 ft. a chance of rain. 
.sat...nw winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
4 ft. 
.sat night...se winds 15 to 20 kt. seas 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 302004
cwfbox
expires:202603310900;;554028

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

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


anz233-310900-
vineyard sound-
403 pm edt mon mar 30 2026

...small craft advisory in effect until 2 am edt tuesday...

.tonight...sw winds 20 to 25 kt with gusts up to 30 kt. seas 5 to
7 ft. wave detail: sw 6 ft at 7 seconds and e 1 foot at
8 seconds. a chance of showers with isolated tstms after
midnight. 
.tue...sw winds 15 to 20 kt, increasing to 20 to 25 kt in the
afternoon. seas 3 to 5 ft. wave detail: sw 5 ft at 7 seconds and
e 1 foot at 8 seconds. showers likely in the morning. 
.tue night...sw winds 20 to 25 kt, increasing to 25 to 30 kt
after midnight. seas 4 to 6 ft, building to 5 to 8 ft after
midnight. wave detail: sw 6 ft at 7 seconds, becoming sw 7 ft at
7 seconds. patchy fog in the evening with vsby 1 to 3 nm. 
.wed...sw winds 25 to 30 kt, diminishing to 20 to 25 kt in the
afternoon. seas 5 to 8 ft. wave detail: sw 7 ft at 8 seconds. a
chance of showers. 
.wed night...nw winds 15 to 20 kt, becoming ne after midnight.
seas 4 to 6 ft, subsiding to 2 to 4 ft after midnight. wave
detail: sw 5 ft at 7 seconds and ne 1 foot at 5 seconds, becoming
sw 3 ft at 7 seconds and ne 2 ft at 3 seconds. showers likely,
mainly in the evening. 
.thu...ne winds 15 to 20 kt. seas 2 to 4 ft. wave detail: sw 3 ft
at 7 seconds and ne 2 ft at 4 seconds. a chance of showers. 
.thu night...ne winds 15 to 20 kt, becoming e 10 to 15 kt after
midnight. seas 2 to 3 ft. a chance of rain in the evening. 
.fri...s winds 15 to 20 kt. seas 2 to 3 ft. 
.fri night...sw winds 20 to 25 kt. seas 2 to 4 ft. a chance of
rain. 
.sat...sw winds 15 to 20 kt. seas 2 to 4 ft. 
.sat night...e winds 15 to 20 kt. seas 2 to 3 ft. a chance of
rain.  

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 302004
cwfbox
expires:202603310900;;554029

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

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


anz234-310900-
buzzards bay-
403 pm edt mon mar 30 2026

...small craft advisory in effect until 2 am edt tuesday...

.tonight...sw winds 20 to 25 kt, diminishing to 15 to 20 kt after
midnight. gusts up to 30 kt. seas 4 to 6 ft. wave detail: sw 6 ft
at 7 seconds and e 1 foot at 8 seconds. a chance of showers with
isolated tstms after midnight. 
.tue...sw winds 15 to 20 kt with gusts up to 25 kt. seas 2 to
4 ft. wave detail: sw 4 ft at 6 seconds and e 1 foot at
8 seconds. showers likely in the morning. 
.tue night...sw winds 20 to 25 kt, increasing to 25 to 30 kt
after midnight. seas 4 to 6 ft. wave detail: sw 6 ft at
7 seconds. patchy fog in the evening with vsby 1 nm or less. 
.wed...sw winds 25 to 30 kt, diminishing to 20 to 25 kt in the
afternoon. seas 4 to 6 ft. wave detail: sw 6 ft at 8 seconds. a
chance of showers in the morning, then showers likely in the
afternoon. 
.wed night...nw winds 10 to 15 kt, becoming ne 15 to 20 kt after
midnight. seas 3 to 5 ft, subsiding to 2 to 3 ft after midnight.
wave detail: sw 4 ft at 7 seconds and ne 1 foot at 5 seconds,
becoming sw 3 ft at 7 seconds and ne 2 ft at 3 seconds. showers
likely, mainly in the evening. 
.thu...ne winds 15 to 20 kt. seas 2 to 3 ft. wave detail: ne 2 ft
at 3 seconds and sw 2 ft at 7 seconds. a chance of showers in the
morning. 
.thu night...ne winds 15 to 20 kt, becoming e 10 to 15 kt after
midnight. seas 2 to 3 ft. a chance of rain in the evening. 
.fri...s winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
3 ft. 
.fri night...sw winds 15 to 20 kt with gusts up to 25 kt. seas
2 to 4 ft. a chance of rain. 
.sat...sw winds 15 to 20 kt. seas 2 to 3 ft. 
.sat night...e winds 15 to 20 kt. seas 2 to 3 ft. a chance of
rain.  

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 302004
cwfbox
expires:202603310900;;554030

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

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


anz235-310900-
rhode island sound-
403 pm edt mon mar 30 2026

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

.tonight...sw winds 20 to 25 kt with gusts up to 30 kt. seas 5 to
8 ft. wave detail: sw 8 ft at 8 seconds and e 1 foot at
8 seconds. a chance of showers with isolated tstms after
midnight. 
.tue...sw winds 20 to 25 kt with gusts up to 30 kt. seas 4 to
6 ft. wave detail: s 6 ft at 8 seconds and e 1 foot at 8 seconds.
showers likely in the morning. 
.tue night...sw winds 20 to 25 kt, increasing to 25 to 30 kt
after midnight. seas 6 to 9 ft. wave detail: sw 9 ft at
8 seconds. patchy fog in the evening with vsby 1 nm or less. 
.wed...sw winds 25 to 30 kt, diminishing to 20 to 25 kt in the
afternoon. seas 6 to 9 ft. wave detail: sw 9 ft at 8 seconds. a
chance of showers. 
.wed night...nw winds 10 to 15 kt, becoming ne 15 to 20 kt after
midnight. seas 5 to 7 ft, subsiding to 4 to 5 ft after midnight.
wave detail: s 7 ft at 8 seconds, becoming s 5 ft at 8 seconds
and ne 2 ft at 4 seconds. showers likely, mainly in the evening. 
.thu...ne winds 15 to 20 kt with gusts up to 25 kt. seas 3 to
5 ft. wave detail: s 5 ft at 7 seconds and ne 4 ft at 4 seconds.
a chance of showers in the morning. 
.thu night...ne winds 15 to 20 kt, becoming e 10 to 15 kt after
midnight. seas 3 to 5 ft. a chance of rain in the evening. 
.fri...s winds 15 to 20 kt. seas 3 to 4 ft. 
.fri night...sw winds 20 to 25 kt. seas 3 to 5 ft. a chance of
rain. 
.sat...sw winds 15 to 20 kt. seas 3 to 5 ft. 
.sat night...e winds 15 to 20 kt. seas 3 to 4 ft. a chance of
rain.  

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 302004
cwfbox
expires:202603310900;;554033

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

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


anz236-310900-
narragansett bay-
403 pm edt mon mar 30 2026

...small craft advisory in effect until 8 pm edt this evening...

.tonight...sw winds 15 to 20 kt, diminishing to 10 to 15 kt after
midnight. gusts up to 25 kt. waves 3 to 5 ft. a chance of showers
with isolated tstms after midnight. 
.tue...sw winds 15 to 20 kt with gusts up to 25 kt. waves 2 to
4 ft. showers likely 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, diminishing to 15 to 20 kt in the
afternoon. gusts up to 30 kt. waves 3 to 5 ft. a chance of
showers in the morning, then showers likely in the afternoon. 
.wed night...n winds 10 to 15 kt, becoming ne with gusts up to
20 kt after midnight. waves 2 to 4 ft. showers likely, mainly in
the evening. 
.thu...ne winds around 15 kt with gusts up to 20 kt. waves 2 to
3 ft. a chance of showers in the morning. 
.thu night...e winds 10 to 15 kt. gusts up to 20 kt in the
evening. waves 2 to 3 ft. a chance of rain. 
.fri...s winds 10 to 15 kt with gusts up to 20 kt. waves 2 to
3 ft. 
.fri night...sw winds 10 to 15 kt with gusts up to 20 kt. waves
2 to 3 ft. a chance of rain. 
.sat...sw winds 10 to 15 kt with gusts up to 20 kt. waves 2 to
3 ft. 
.sat night...e winds 10 to 15 kt with gusts up to 20 kt. waves
2 to 4 ft. a chance of rain.  

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 302004
cwfbox
expires:202603310900;;554021

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

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


anz250-310900-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
403 pm edt mon mar 30 2026

...small craft advisory in effect until 11 pm edt this evening...

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

$$

fzus51 kbox 302004
cwfbox
expires:202603310900;;554024

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

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


anz254-310900-
coastal waters from provincetown ma to chatham ma to nantucket ma
out 20 nm-
403 pm edt mon mar 30 2026

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

.tonight...sw winds 20 to 25 kt with gusts up to 30 kt. seas 5 to
7 ft. wave detail: sw 7 ft at 7 seconds and e 1 foot at
8 seconds. a chance of showers after midnight. 
.tue...sw winds 15 to 20 kt with gusts up to 30 kt. seas 4 to
6 ft. wave detail: sw 6 ft at 8 seconds and e 1 foot at
8 seconds. showers likely in the morning. a chance of showers in
the afternoon. 
.tue night...sw winds 20 to 25 kt with gusts up to 30 kt. seas
4 to 6 ft, building to 5 to 8 ft after midnight. wave detail: sw
6 ft at 8 seconds, becoming sw 8 ft at 8 seconds. patchy fog in
the evening. vsby 1 to 3 nm. 
.wed...sw winds 20 to 25 kt with gusts up to 30 kt. seas 6 to
9 ft. wave detail: sw 8 ft at 8 seconds and ne 1 foot at
6 seconds. a chance of showers in the afternoon. 
.wed night...nw winds 15 to 20 kt, becoming ne after midnight.
seas 4 to 6 ft. wave detail: sw 6 ft at 8 seconds and ne 3 ft at
4 seconds. showers likely, mainly in the evening. 
.thu...ne winds 15 to 20 kt. seas 3 to 5 ft. wave detail: ne 4 ft
at 6 seconds and s 3 ft at 7 seconds. a chance of showers in the
afternoon. 
.thu night...e winds 10 to 15 kt. gusts up to 20 kt in the
evening. seas 3 to 5 ft. a chance of rain. 
.fri...s winds 10 to 15 kt with gusts up to 20 kt. seas 3 to
4 ft. 
.fri night and sat...sw winds 20 to 25 kt, becoming nw 15 to
20 kt. seas 3 to 5 ft. a chance of rain. 
.sat night...se winds 15 to 20 kt. seas 4 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 302004
cwfbox
expires:202603310900;;554025

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

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


anz255-310900-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
403 pm edt mon mar 30 2026

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

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

$$