fzus51 kbox 130806
cwfbox
expires:202608132100;;105506

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
405 am edt thu aug 13 2026

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


anz231-132100-
cape cod bay-
405 am edt thu aug 13 2026

.today...sw winds 5 to 10 kt. seas 1 foot or less. wave detail:
sw 1 foot at 2 seconds and e 1 foot at 3 seconds. a chance of
showers with a slight chance of tstms. patchy fog this morning. 
.tonight...w winds 5 to 10 kt. seas 1 foot or less, then around
2 ft after midnight. wave detail: w 1 foot at 2 seconds and e
1 foot at 3 seconds, becoming nw 1 foot at 2 seconds and e 1 foot
at 2 seconds. 
.fri...n winds 5 to 10 kt. seas around 2 ft in the morning, then
1 foot or less. wave detail: n 1 foot at 3 seconds and s 1 foot
at 5 seconds, becoming n 1 foot at 3 seconds and sw 1 foot at
6 seconds. 
.fri night...sw winds around 5 kt, becoming n after midnight.
seas 1 foot or less, then around 2 ft after midnight. wave
detail: n 1 foot at 3 seconds and s 1 foot at 5 seconds. 
.sat...n winds 5 to 10 kt. seas around 2 ft in the morning, then
1 foot or less. wave detail: n 1 foot at 3 seconds and s 1 foot
at 6 seconds, becoming n 1 foot at 4 seconds and s 1 foot at
8 seconds. 
.sat night...s winds around 5 kt, becoming sw around 5 kt after
midnight. seas 1 foot or less. wave detail: n 1 foot at 4 seconds
and s 1 foot at 5 seconds. 
.sun...sw winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
3 ft. 
.sun night and mon...sw winds 10 to 15 kt, becoming nw. gusts up
to 25 kt. seas 2 to 4 ft. showers.
.mon night...nw 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 130806
cwfbox
expires:202608132100;;105510

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
405 am edt thu aug 13 2026

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


anz232-132100-
nantucket sound-
405 am edt thu aug 13 2026

.today...sw winds 10 to 15 kt. gusts up to 20 kt this afternoon.
seas around 2 ft. wave detail: sw 2 ft at 3 seconds and e 1 foot
at 3 seconds. showers likely with a chance of tstms this morning,
then a chance of showers with a slight chance of tstms this
afternoon. patchy fog this morning. 
.tonight...w winds around 10 kt, becoming nw after midnight. seas
around 2 ft. wave detail: e 1 foot at 4 seconds and sw 1 foot at
4 seconds. 
.fri...nw winds 5 to 10 kt. seas around 2 ft. wave detail: n
1 foot at 3 seconds and sw 1 foot at 5 seconds. 
.fri night...sw winds 5 to 10 kt, becoming n after midnight. seas
1 foot or less, then around 2 ft after midnight. wave detail: w
1 foot at 2 seconds and ne 1 foot at 3 seconds, becoming n 1 foot
at 3 seconds and sw 1 foot at 5 seconds. 
.sat...n winds 5 to 10 kt. seas around 2 ft. wave detail: n
1 foot at 3 seconds and s 1 foot at 5 seconds. 
.sat night...se winds around 5 kt, becoming sw after midnight.
seas 1 foot or less. wave detail: nw 1 foot at 2 seconds and ne
1 foot at 3 seconds. 
.sun...sw winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
3 ft. 
.sun night and mon...sw winds 20 to 25 kt with gusts up to 30 kt.
seas 2 to 3 ft. showers.
.mon night...nw winds 10 to 15 kt with gusts up to 20 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 130806
cwfbox
expires:202608132100;;105511

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
405 am edt thu aug 13 2026

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


anz233-132100-
vineyard sound-
405 am edt thu aug 13 2026

.today...sw winds 10 to 15 kt. seas around 2 ft. wave detail: sw
2 ft at 4 seconds and se 1 foot at 8 seconds. showers likely with
a chance of tstms this morning, then a slight chance of showers
and tstms this afternoon. patchy fog this morning. 
.tonight...w winds around 10 kt, becoming nw after midnight. seas
around 2 ft. wave detail: w 2 ft at 4 seconds and ne 1 foot at
4 seconds. 
.fri...n winds 5 to 10 kt, becoming w in the afternoon. seas
around 2 ft. wave detail: sw 2 ft at 5 seconds and n 1 foot at
3 seconds. 
.fri night...w winds 5 to 10 kt, becoming n after midnight. seas
around 2 ft. wave detail: ne 1 foot at 3 seconds and sw 1 foot at
4 seconds. 
.sat...n winds 5 to 10 kt, becoming ne in the afternoon. seas
around 2 ft in the morning, then 1 foot or less. wave detail: n
1 foot at 3 seconds and sw 1 foot at 5 seconds, becoming n 1 foot
at 2 seconds and s 1 foot at 6 seconds. 
.sat night...s winds 5 to 10 kt, becoming sw after midnight. seas
1 foot or less. wave detail: ne 1 foot at 2 seconds and sw 1 foot
at 4 seconds. 
.sun...sw winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
3 ft. 
.sun night and mon...sw winds 15 to 20 kt with gusts up to 25 kt.
seas 2 to 4 ft. showers.
.mon night...nw 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 130806
cwfbox
expires:202608132100;;105512

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
405 am edt thu aug 13 2026

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


anz234-132100-
buzzards bay-
405 am edt thu aug 13 2026

.today...sw winds 5 to 10 kt. seas around 2 ft. wave detail: sw
1 foot at 4 seconds and se 1 foot at 8 seconds. showers likely
with a chance of tstms this morning, then a slight chance of
showers and tstms this afternoon. patchy fog this morning. 
.tonight...w winds 5 to 10 kt, becoming nw after midnight. seas
around 2 ft in the evening, then 1 foot or less. wave detail: e
1 foot at 4 seconds and sw 1 foot at 5 seconds, becoming n 1 foot
at 3 seconds and sw 1 foot at 5 seconds. 
.fri...nw winds 5 to 10 kt, becoming w in the afternoon. seas
1 foot or less, then around 2 ft in the afternoon. wave detail: n
1 foot at 3 seconds and sw 1 foot at 5 seconds, becoming nw
1 foot at 3 seconds and sw 1 foot at 5 seconds. 
.fri night...w winds 5 to 10 kt, becoming n after midnight. seas
1 foot or less. wave detail: n 1 foot at 3 seconds and sw 1 foot
at 4 seconds. 
.sat...n winds 5 to 10 kt, becoming ne in the afternoon. seas
1 foot or less. wave detail: n 1 foot at 3 seconds and sw 1 foot
at 4 seconds. 
.sat night...s winds 5 to 10 kt, becoming sw after midnight. seas
1 foot or less. wave detail: ne 1 foot at 2 seconds and w 1 foot
at 4 seconds. 
.sun...sw winds 15 to 20 kt with gusts up to 25 kt. seas 2 to
3 ft. 
.sun night and mon...sw winds 20 to 25 kt, becoming w. seas 2 to
4 ft. showers.
.mon night...nw 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 130806
cwfbox
expires:202608132100;;105513

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
405 am edt thu aug 13 2026

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


anz235-132100-
rhode island sound-
405 am edt thu aug 13 2026

.today...sw winds 10 to 15 kt. seas around 2 ft. wave detail: sw
2 ft at 5 seconds and se 1 foot at 8 seconds. showers likely with
a chance of tstms this morning, then a slight chance of showers
and tstms this afternoon. patchy fog this morning. 
.tonight...w winds around 10 kt, becoming nw after midnight. seas
around 2 ft. wave detail: sw 2 ft at 5 seconds and e 1 foot at
4 seconds. 
.fri...n winds 5 to 10 kt, becoming sw in the afternoon. seas
around 2 ft. wave detail: sw 2 ft at 5 seconds and n 1 foot at
2 seconds. 
.fri night...w winds 5 to 10 kt, becoming n 10 to 15 kt after
midnight. seas around 2 ft. wave detail: n 2 ft at 3 seconds and
sw 2 ft at 4 seconds. 
.sat...n winds 10 to 15 kt, becoming nw 5 to 10 kt in the
afternoon. seas around 2 ft. wave detail: n 2 ft at 3 seconds and
s 1 foot at 6 seconds. 
.sat night...sw winds 5 to 10 kt. seas around 2 ft. wave detail:
ne 1 foot at 2 seconds and w 1 foot at 2 seconds. 
.sun...sw winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
3 ft. 
.sun night and mon...sw winds 20 to 25 kt, becoming w 15 to
20 kt. seas 3 to 5 ft. showers.
.mon night...nw winds 10 to 15 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 130806
cwfbox
expires:202608132100;;105516

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
405 am edt thu aug 13 2026

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


anz236-132100-
narragansett bay-
405 am edt thu aug 13 2026

.today...sw winds 5 to 10 kt. waves 1 foot or less, then around
2 ft this afternoon. showers likely with a chance of tstms this
morning, then a slight chance of showers and tstms this
afternoon. patchy fog this morning. 
.tonight...w winds 5 to 10 kt, becoming nw after midnight. waves
around 2 ft in the evening, then 1 foot or less. 
.fri...n winds 5 to 10 kt, becoming w in the afternoon. waves
1 foot or less. 
.fri night...nw winds 5 to 10 kt, becoming n after midnight.
waves 1 foot or less. 
.sat...n winds 5 to 10 kt. waves 1 foot or less. 
.sat night...sw winds 5 to 10 kt. waves 1 foot or less. 
.sun...sw winds 10 to 15 kt with gusts up to 20 kt. waves 2 to
3 ft. 
.sun night...sw winds 15 to 20 kt. waves 2 to 3 ft. showers
likely. 
.mon...w winds 15 to 20 kt. waves 2 to 3 ft. showers likely. 
.mon night...nw 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 130806
cwfbox
expires:202608132100;;105504

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
405 am edt thu aug 13 2026

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


anz250-132100-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
405 am edt thu aug 13 2026

.today...sw winds 5 to 10 kt. seas around 2 ft. wave detail: se
1 foot at 3 seconds and w 1 foot at 3 seconds. a slight chance of
tstms. a chance of showers this morning, then a slight chance of
showers this afternoon. 
.tonight...w winds 5 to 10 kt, becoming nw after midnight. seas
around 2 ft. wave detail: nw 2 ft at 3 seconds and se 1 foot at
3 seconds. 
.fri...nw winds 5 to 10 kt. seas around 2 ft. wave detail: n 2 ft
at 3 seconds and s 1 foot at 4 seconds. 
.fri night...w winds 5 to 10 kt, becoming n after midnight. seas
around 2 ft. wave detail: n 1 foot at 3 seconds and s 1 foot at
4 seconds. 
.sat...n winds 5 to 10 kt. seas around 2 ft. wave detail: n 2 ft
at 4 seconds and s 1 foot at 5 seconds. 
.sat night...s winds 5 to 10 kt, becoming sw after midnight. seas
around 2 ft. wave detail: w 1 foot at 3 seconds and s 1 foot at
3 seconds. 
.sun...sw winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
3 ft. 
.sun night and mon...s winds around 15 kt, becoming nw. gusts up
to 25 kt. seas 2 to 3 ft. showers likely. 
.mon night...nw 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 130806
cwfbox
expires:202608132100;;105507

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
405 am edt thu aug 13 2026

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


anz254-132100-
coastal waters from provincetown ma to chatham ma to nantucket ma
out 20 nm-
405 am edt thu aug 13 2026

.today...sw winds 5 to 10 kt. seas around 2 ft. wave detail: s
2 ft at 5 seconds and nw 1 foot at 3 seconds. a chance of showers
with a slight chance of tstms. patchy fog this morning. 
.tonight...w winds 5 to 10 kt, becoming nw after midnight. seas
around 2 ft. wave detail: nw 2 ft at 3 seconds and s 2 ft at
5 seconds. 
.fri...nw winds 5 to 10 kt. seas around 2 ft. wave detail: n 2 ft
at 3 seconds and s 2 ft at 5 seconds. 
.fri night...sw winds around 5 kt, becoming n after midnight.
seas around 2 ft. wave detail: nw 1 foot at 4 seconds and s
1 foot at 5 seconds. 
.sat...n winds 5 to 10 kt. seas around 2 ft. wave detail: n 2 ft
at 4 seconds and s 1 foot at 6 seconds. 
.sat night...w winds around 5 kt, becoming sw after midnight.
seas around 2 ft. wave detail: nw 2 ft at 4 seconds and s 1 foot
at 6 seconds. 
.sun...sw winds 10 to 15 kt with gusts up to 20 kt. seas around
2 ft. 
.sun night...s winds 15 to 20 kt with gusts up to 25 kt. seas
2 to 4 ft. showers likely. 
.mon...w winds 15 to 20 kt with gusts up to 25 kt. seas 3 to
5 ft. showers likely. 
.mon night...nw winds 10 to 15 kt with gusts up to 20 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 130806
cwfbox
expires:202608132100;;105508

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
405 am edt thu aug 13 2026

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


anz255-132100-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
405 am edt thu aug 13 2026

.today...sw winds 10 to 15 kt. seas 2 to 3 ft. wave detail: w
2 ft at 4 seconds and s 2 ft at 7 seconds. a slight chance of
tstms. showers likely this morning, then a slight chance of
showers this afternoon. patchy fog this morning. 
.tonight...w winds around 10 kt, becoming nw after midnight. seas
2 to 3 ft. wave detail: sw 2 ft at 5 seconds and e 1 foot at
4 seconds. 
.fri...n winds 5 to 10 kt, becoming w in the afternoon. seas 2 to
3 ft. wave detail: n 2 ft at 4 seconds and sw 2 ft at 5 seconds. 
.fri night...sw winds 5 to 10 kt, becoming n 10 to 15 kt after
midnight. seas around 2 ft. wave detail: n 1 foot at 3 seconds
and w 1 foot at 3 seconds. 
.sat...n winds 10 to 15 kt, diminishing to 5 to 10 kt in the
afternoon. seas around 2 ft. wave detail: n 2 ft at 3 seconds and
s 1 foot at 6 seconds. 
.sat night...e winds around 5 kt, becoming sw after midnight.
seas around 2 ft. wave detail: nw 1 foot at 3 seconds and ne
1 foot at 4 seconds. 
.sun...sw winds 10 to 15 kt with gusts up to 20 kt. seas around
2 ft. 
.sun night and mon...sw winds 20 to 25 kt. seas 3 to 5 ft.
showers.
.mon night...nw winds 10 to 15 kt with gusts up to 20 kt. seas
3 to 5 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.

$$