fzus51 kbox 170805
cwfbox
expires:202607172100;;109144

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
405 am edt fri jul 17 2026

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


anz231-172100-
cape cod bay-
405 am edt fri jul 17 2026

.today...nw winds 5 to 10 kt, becoming se this afternoon. seas
around 2 ft this morning, then 1 foot or less. wave detail: n
1 foot at 4 seconds and s 1 foot at 6 seconds, becoming n 1 foot
at 4 seconds and s 1 foot at 5 seconds. 
.tonight...s winds 5 to 10 kt, becoming sw after midnight. seas
1 foot or less. wave detail: s 1 foot at 2 seconds and n 1 foot
at 4 seconds. areas of smoke. 
.sat...sw winds 10 to 15 kt with gusts up to 20 kt, becoming s
15 to 20 kt with gusts up to 30 kt in the afternoon. seas 2 to
4 ft. wave detail: sw 2 ft at 3 seconds and n 1 foot at
4 seconds. areas of smoke. a chance of showers in the afternoon. 
.sat night...sw winds 15 to 20 kt with gusts up to 30 kt. seas
2 to 4 ft. wave detail: sw 3 ft at 4 seconds and e 1 foot at
10 seconds. showers with a chance of tstms. 
.sun...w winds 10 to 15 kt, becoming nw 5 to 10 kt in the
afternoon. gusts up to 20 kt. seas 2 to 3 ft. wave detail: sw
2 ft at 4 seconds and se 1 foot at 8 seconds. a chance of showers
in the morning. 
.sun night...nw winds 5 to 10 kt. seas 1 foot or less. wave
detail: n 1 foot at 4 seconds and s 1 foot at 6 seconds. 
.mon through tue...s winds 10 to 15 kt with gusts up to 20 kt.
seas 2 to 3 ft. 
.tue night...s winds 10 to 15 kt with gusts up to 25 kt. seas
2 to 4 ft. showers. 

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 170805
cwfbox
expires:202607172100;;109148

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
405 am edt fri jul 17 2026

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


anz232-172100-
nantucket sound-
405 am edt fri jul 17 2026

.today...nw winds 5 to 10 kt, becoming sw this afternoon. seas
around 2 ft. wave detail: nw 1 foot at 2 seconds and n 1 foot at
5 seconds. 
.tonight...sw winds 5 to 10 kt. seas around 2 ft. wave detail: sw
1 foot at 3 seconds and n 1 foot at 3 seconds. areas of smoke. 
.sat...sw winds 10 to 15 kt, becoming s 15 to 20 kt in the
afternoon. gusts up to 25 kt. seas 2 to 3 ft. wave detail: sw
3 ft at 4 seconds and ne 1 foot at 5 seconds. areas of smoke. a
chance of showers in the afternoon. 
.sat night...sw winds 20 to 25 kt with gusts up to 30 kt. seas
3 to 5 ft. wave detail: sw 5 ft at 5 seconds and se 1 foot at
9 seconds. showers with a chance of tstms. 
.sun...w winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. gusts up to 25 kt. seas 3 to 5 ft, subsiding to 2 to
3 ft in the afternoon. wave detail: s 4 ft at 7 seconds and w
3 ft at 4 seconds, becoming w 2 ft at 3 seconds and s 2 ft at
7 seconds. showers likely in the morning. 
.sun night...nw winds 5 to 10 kt. seas 2 to 3 ft. wave detail: sw
2 ft at 6 seconds and nw 1 foot at 4 seconds. 
.mon through tue...s winds 15 to 20 kt with gusts up to 25 kt.
seas 2 to 3 ft. 
.tue night...s winds 20 to 25 kt with gusts up to 30 kt. seas
3 to 5 ft. showers. 

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 170805
cwfbox
expires:202607172100;;109149

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
405 am edt fri jul 17 2026

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


anz233-172100-
vineyard sound-
405 am edt fri jul 17 2026

.today...nw winds 5 to 10 kt, becoming sw this afternoon. seas
around 2 ft. wave detail: sw 2 ft at 5 seconds and n 1 foot at
5 seconds. 
.tonight...sw winds 10 to 15 kt, diminishing to 5 to 10 kt after
midnight. seas around 2 ft. wave detail: sw 2 ft at 6 seconds and
w 1 foot at 3 seconds. areas of smoke. 
.sat...sw winds 10 to 15 kt, becoming s 15 to 20 kt in the
afternoon. gusts up to 25 kt. seas around 2 ft, building to 3 to
4 ft in the afternoon. wave detail: sw 2 ft at 4 seconds and ne
1 foot at 8 seconds, becoming sw 4 ft at 5 seconds and ne 1 foot
at 4 seconds. areas of smoke. showers likely in the afternoon. 
.sat night...sw winds 20 to 25 kt with gusts up to 30 kt. seas
3 to 4 ft, building to 4 to 6 ft after midnight. wave detail: w
4 ft at 7 seconds and se 1 foot at 10 seconds, becoming sw 6 ft
at 7 seconds and e 2 ft at 7 seconds. showers with a chance of
tstms.
.sun...w winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. seas 3 to 5 ft. wave detail: sw 5 ft at 7 seconds and
se 2 ft at 7 seconds. a chance of showers in the morning. 
.sun night...nw winds 5 to 10 kt. seas 2 to 4 ft. wave detail: sw
4 ft at 8 seconds and e 2 ft at 8 seconds. 
.mon through tue...s winds 10 to 15 kt with gusts up to 20 kt.
seas 2 to 3 ft. 
.tue night...s winds 15 to 20 kt with gusts up to 25 kt. seas
3 to 5 ft. showers. 

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 170805
cwfbox
expires:202607172100;;109150

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
405 am edt fri jul 17 2026

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


anz234-172100-
buzzards bay-
405 am edt fri jul 17 2026

.today...nw winds around 5 kt, becoming sw 10 to 15 kt this
afternoon. seas 1 foot or less, then around 2 ft this afternoon.
wave detail: n 1 foot at 4 seconds and sw 1 foot at 5 seconds,
becoming n 1 foot at 4 seconds and w 1 foot at 4 seconds. 
.tonight...sw winds 10 to 15 kt, diminishing to around 5 kt after
midnight. seas around 2 ft in the evening, then 1 foot or less.
wave detail: sw 1 foot at 4 seconds and n 1 foot at 5 seconds,
becoming ne 1 foot at 3 seconds and w 1 foot at 4 seconds. areas
of smoke. 
.sat...sw winds 10 to 15 kt with gusts up to 20 kt, becoming s
15 to 20 kt with gusts up to 30 kt in the afternoon. seas 2 to
4 ft. wave detail: sw 3 ft at 5 seconds and ne 1 foot at
7 seconds. areas of smoke. a chance of showers in the afternoon. 
.sat night...sw winds 20 to 25 kt with gusts up to 30 kt. seas
3 to 5 ft. wave detail: sw 5 ft at 6 seconds and se 2 ft at
11 seconds. showers with a chance of tstms. 
.sun...w winds 10 to 15 kt. gusts up to 20 kt in the morning.
seas 2 to 4 ft. wave detail: sw 4 ft at 7 seconds and sw 3 ft at
4 seconds. a chance of showers in the morning. 
.sun night...nw winds 5 to 10 kt. seas 2 to 3 ft. wave detail: sw
2 ft at 8 seconds and s 2 ft at 9 seconds. 
.mon through tue...s winds 15 to 20 kt with gusts up to 25 kt.
seas 2 to 3 ft. 
.tue night...s winds 15 to 20 kt with gusts up to 25 kt. seas
3 to 4 ft. showers. 

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 170805
cwfbox
expires:202607172100;;109151

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
405 am edt fri jul 17 2026

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


anz235-172100-
rhode island sound-
405 am edt fri jul 17 2026

.today...nw winds around 5 kt, becoming sw this afternoon. seas
around 2 ft. wave detail: n 2 ft at 3 seconds and s 2 ft at
5 seconds. 
.tonight...sw winds 10 to 15 kt, diminishing to 5 to 10 kt after
midnight. seas around 2 ft. wave detail: s 2 ft at 7 seconds and
w 1 foot at 3 seconds. areas of smoke.
.sat...sw winds 10 to 15 kt, becoming s 15 to 20 kt in the
afternoon. gusts up to 25 kt. seas around 2 ft, building to 3 to
4 ft in the afternoon. wave detail: sw 2 ft at 4 seconds and e
1 foot at 8 seconds, becoming sw 4 ft at 5 seconds and ne 1 foot
at 4 seconds. areas of smoke. showers likely in the afternoon
with vsby 1 nm or less. 
.sat night...sw winds 20 to 25 kt with gusts up to 30 kt. seas
4 to 6 ft. wave detail: sw 6 ft at 7 seconds and se 1 foot at
14 seconds. showers with a chance of tstms. 
.sun...w winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. seas 4 to 6 ft. wave detail: sw 6 ft at 6 seconds and
se 1 foot at 13 seconds. a chance of showers in the morning. 
.sun night...nw winds 5 to 10 kt. seas 3 to 5 ft. wave detail: s
5 ft at 8 seconds and e 3 ft at 8 seconds. 
.mon through tue...s winds 10 to 15 kt with gusts up to 20 kt.
seas 2 to 4 ft. 
.tue night...s winds 15 to 20 kt with gusts up to 25 kt. seas
4 to 6 ft. showers. 

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 170805
cwfbox
expires:202607172100;;109154

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
405 am edt fri jul 17 2026

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


anz236-172100-
narragansett bay-
405 am edt fri jul 17 2026

.today...nw winds around 5 kt, becoming sw this afternoon. waves
1 foot or less, then around 2 ft this afternoon. 
.tonight...sw winds 5 to 10 kt. waves around 2 ft. areas of
smoke. 
.sat...sw winds 10 to 15 kt, becoming s 15 to 20 kt in the
afternoon. gusts up to 25 kt. waves 2 to 3 ft. areas of smoke. a
chance of showers in the afternoon. 
.sat night...sw winds 15 to 20 kt with gusts up to 25 kt. waves
2 to 4 ft. showers with a chance of tstms. 
.sun...w winds 10 to 15 kt. waves 2 to 3 ft. a chance of showers
in the morning. 
.sun night...nw winds 5 to 10 kt. waves 2 to 3 ft.
.mon and mon night...w winds 5 to 10 kt, becoming s. waves around
2 ft. 
.tue...s winds 10 to 15 kt with gusts up to 20 kt. waves 2 to
3 ft. a chance of showers. 
.tue night...s winds around 15 kt with gusts up to 20 kt. waves
2 to 4 ft. showers. 

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 170805
cwfbox
expires:202607172100;;109142

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
405 am edt fri jul 17 2026

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


anz250-172100-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
405 am edt fri jul 17 2026

.today...w winds 10 to 15 kt with gusts up to 20 kt, becoming sw
5 to 10 kt this afternoon. seas 2 to 3 ft. wave detail: nw 2 ft
at 4 seconds and s 1 foot at 6 seconds. 
.tonight...s winds 5 to 10 kt, becoming sw after midnight. seas
around 2 ft. wave detail: n 1 foot at 4 seconds and s 1 foot at
4 seconds. areas of smoke after midnight. 
.sat...s winds 10 to 15 kt with gusts up to 20 kt, increasing to
20 to 25 kt with gusts up to 35 kt in the afternoon. seas around
2 ft, building to 3 to 4 ft in the afternoon. wave detail: s 2 ft
at 3 seconds and n 1 foot at 3 seconds, becoming s 4 ft at
4 seconds and n 2 ft at 3 seconds. areas of smoke. a chance of
showers in the afternoon. 
.sat night...s winds 20 to 25 kt, becoming sw 15 to 20 kt after
midnight. gusts up to 30 kt. seas 3 to 5 ft. wave detail: sw 5 ft
at 5 seconds and se 1 foot at 14 seconds. showers with a chance
of tstms. 
.sun and sun night...nw winds 10 to 15 kt with gusts up to 25 kt.
seas 2 to 4 ft. wave detail: s 3 ft at 6 seconds and w 2 ft at
4 seconds. 
.mon through tue...s winds 10 to 15 kt with gusts up to 25 kt.
seas 2 to 3 ft. wave detail: s 3 ft at 4 seconds and se 2 ft at
9 seconds. 
.tue night...s winds around 15 kt with gusts up to 25 kt. seas
around 3 ft. showers. 

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 170805
cwfbox
expires:202607172100;;109145

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
405 am edt fri jul 17 2026

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


anz254-172100-
coastal waters from provincetown ma to chatham ma to nantucket ma
out 20 nm-
405 am edt fri jul 17 2026

.today...nw winds around 10 kt, becoming sw this afternoon. seas
2 to 3 ft. wave detail: n 2 ft at 4 seconds and s 2 ft at
5 seconds. 
.tonight...s winds 5 to 10 kt. seas 2 to 3 ft. wave detail: s
2 ft at 6 seconds and n 1 foot at 5 seconds. areas of smoke. 
.sat...sw winds 10 to 15 kt, becoming s 15 to 20 kt in the
afternoon. gusts up to 25 kt. seas 2 to 4 ft. wave detail: s 3 ft
at 4 seconds and n 1 foot at 5 seconds. areas of smoke. 
.sat night...sw winds 20 to 25 kt with gusts up to 30 kt. seas
4 to 6 ft. wave detail: se 6 ft at 7 seconds and w 2 ft at
5 seconds. showers with a chance of tstms. 
.sun...w winds 15 to 20 kt, becoming nw 10 to 15 kt in the
afternoon. gusts up to 25 kt. seas 4 to 6 ft. wave detail: sw
6 ft at 6 seconds and se 3 ft at 8 seconds. showers likely in the
morning. 
.sun night...nw winds 5 to 10 kt. seas 3 to 5 ft. wave detail: s
4 ft at 8 seconds and nw 1 foot at 3 seconds. 
.mon through tue...s winds 10 to 15 kt with gusts up to 20 kt.
seas 2 to 4 ft. 
.tue night...s winds 20 to 25 kt with gusts up to 30 kt. seas
4 to 6 ft. showers likely.  

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 170805
cwfbox
expires:202607172100;;109146

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
405 am edt fri jul 17 2026

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


anz255-172100-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
405 am edt fri jul 17 2026

.today...nw winds 5 to 10 kt, becoming sw this afternoon. seas
2 to 3 ft. wave detail: sw 2 ft at 6 seconds and n 1 foot at
4 seconds. 
.tonight...sw winds 10 to 15 kt. seas 2 to 3 ft. wave detail: sw
2 ft at 6 seconds and n 1 foot at 4 seconds. areas of smoke. 
.sat...sw winds 10 to 15 kt, becoming s 15 to 20 kt in the
afternoon. gusts up to 25 kt. seas 2 to 4 ft. wave detail: s 4 ft
at 5 seconds and ne 1 foot at 5 seconds. areas of smoke. a chance
of showers in the afternoon with vsby 1 to 3 nm. 
.sat night...sw winds 20 to 25 kt with gusts up to 30 kt. seas
3 to 5 ft, building to 5 to 7 ft after midnight. wave detail: s
5 ft at 5 seconds and nw 1 foot at 6 seconds, becoming sw 7 ft at
7 seconds and nw 1 foot at 6 seconds. showers with a chance of
tstms. 
.sun...w winds 15 to 20 kt with gusts up to 25 kt, diminishing to
10 to 15 kt in the afternoon. seas 5 to 7 ft. wave detail: w 7 ft
at 6 seconds and e 1 foot at 10 seconds. showers likely in the
morning. 
.sun night...nw winds around 10 kt. seas 4 to 6 ft. wave detail:
sw 6 ft at 8 seconds and n 2 ft at 5 seconds. 
.mon and mon night...w winds 5 to 10 kt, becoming s. seas 3 to
5 ft. 
.tue...s winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
4 ft. 
.tue night...s winds 20 to 25 kt with gusts up to 30 kt. seas
5 to 7 ft. showers likely.  

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.

$$