fzus51 kbox 180901
cwfbox
expires:202607182215;;167612

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
501 am edt sat jul 18 2026

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


anz231-182215-
cape cod bay-
501 am edt sat jul 18 2026

...small craft advisory in effect from 11 am edt this morning
through sunday morning...

.today...sw winds 5 to 10 kt with gusts up to 20 kt, becoming s
15 to 20 kt with gusts up to 30 kt this afternoon. seas 2 to
4 ft. wave detail: w 2 ft at 3 seconds and ne 1 foot at
6 seconds. areas of smoke. a chance of showers and tstms this
afternoon. 
.tonight...sw winds 15 to 20 kt with gusts up to 30 kt. seas 3 to
5 ft. wave detail: sw 3 ft at 4 seconds and e 1 foot at
11 seconds. showers likely with a chance of tstms. 
.sun...w winds 10 to 15 kt, becoming nw 5 to 10 kt in the
afternoon. gusts up to 25 kt. seas 2 to 4 ft. wave detail: sw
2 ft at 3 seconds and se 1 foot at 9 seconds. 
.sun night...nw winds 5 to 10 kt. seas 1 foot or less. wave
detail: nw 1 foot at 4 seconds and e 1 foot at 8 seconds. 
.mon...nw winds around 5 kt, becoming se in the afternoon. seas
1 foot or less. wave detail: n 1 foot at 4 seconds and s 1 foot
at 7 seconds. 
.mon night...s winds 5 to 10 kt. seas around 2 ft in the evening,
then 1 foot or less. wave detail: s 1 foot at 2 seconds and n
1 foot at 5 seconds, becoming s 1 foot at 2 seconds and nw 1 foot
at 3 seconds. 
.tue...s winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
3 ft. a chance of showers. 
.tue night...s winds 15 to 20 kt with gusts up to 30 kt. seas
2 to 4 ft. showers with a chance of tstms. 
.wed...sw winds 15 to 20 kt with gusts up to 30 kt. seas 3 to
4 ft. showers.
.wed night...sw winds 15 to 20 kt with gusts up to 30 kt. seas
2 to 4 ft. a chance of 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 180901
cwfbox
expires:202607182215;;167616

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
501 am edt sat jul 18 2026

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


anz232-182215-
nantucket sound-
501 am edt sat jul 18 2026

...small craft advisory in effect from 11 am edt this morning
through sunday morning...

.today...sw winds 10 to 15 kt, becoming s 15 to 20 kt this
afternoon. gusts up to 25 kt. seas 2 to 3 ft. wave detail: sw
3 ft at 4 seconds and se 1 foot at 9 seconds. areas of smoke this
morning, then patchy smoke this afternoon. showers with a chance
of tstms this afternoon.
.tonight...sw winds 15 to 20 kt with gusts up to 30 kt. seas 3 to
4 ft. wave detail: sw 4 ft at 4 seconds and se 1 foot at
8 seconds. a chance of tstms. showers in the evening, then a
chance of showers after midnight. 
.sun...w winds 15 to 20 kt, becoming nw 10 to 15 kt in the
afternoon. gusts up to 25 kt. seas 2 to 4 ft. wave detail: s 3 ft
at 7 seconds and w 2 ft at 4 seconds. 
.sun night...w winds 5 to 10 kt, becoming nw after midnight. seas
2 to 3 ft. wave detail: w 1 foot at 3 seconds and s 1 foot at
7 seconds. 
.mon and mon night...s winds 5 to 10 kt. seas around 2 ft. wave
detail: s 2 ft at 4 seconds and nw 1 foot at 3 seconds. 
.tue...s winds 15 to 20 kt with gusts up to 25 kt. seas 2 to
3 ft. wave detail: s 3 ft at 4 seconds and w 1 foot at 4 seconds.
a chance of showers. 
.tue night...s winds 25 to 30 kt with gusts up to 35 kt. seas
4 to 6 ft. showers with a chance of tstms. 
.wed...sw winds 25 to 30 kt with gusts up to 35 kt. seas 4 to
6 ft. showers.
.wed night...sw winds 25 to 30 kt with gusts up to 35 kt. seas
4 to 6 ft. a chance of 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 180901
cwfbox
expires:202607182215;;167617

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
501 am edt sat jul 18 2026

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


anz233-182215-
vineyard sound-
501 am edt sat jul 18 2026

...small craft advisory in effect from 11 am edt this morning
through sunday morning...

.today...sw winds 5 to 10 kt, becoming s around 15 kt this
afternoon. gusts up to 25 kt. seas 2 to 4 ft. wave detail: sw
3 ft at 3 seconds and se 1 foot at 9 seconds. areas of smoke.
showers with a chance of tstms this afternoon. 
.tonight...sw winds 15 to 20 kt with gusts up to 30 kt. seas 3 to
5 ft. wave detail: s 5 ft at 6 seconds and se 1 foot at
14 seconds. a chance of tstms. showers in the evening, then a
chance of showers after midnight. 
.sun...w winds 10 to 15 kt. gusts up to 25 kt in the morning.
seas 2 to 4 ft. wave detail: w 4 ft at 6 seconds and se 1 foot at
8 seconds. 
.sun night...nw winds 5 to 10 kt. seas 2 to 3 ft. wave detail: w
3 ft at 6 seconds and se 1 foot at 6 seconds. 
.mon and mon night...s winds 5 to 10 kt. seas around 2 ft. wave
detail: sw 2 ft at 8 seconds and nw 1 foot at 5 seconds. 
.tue...s winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
3 ft. wave detail: sw 2 ft at 6 seconds and se 1 foot at
9 seconds. a chance of showers and tstms. 
.tue night...s winds 20 to 25 kt with gusts up to 30 kt. seas
4 to 6 ft. showers with a chance of tstms. 
.wed...sw winds 20 to 25 kt with gusts up to 30 kt. seas 5 to
7 ft. showers.
.wed night...sw winds 20 to 25 kt with gusts up to 30 kt. seas
5 to 7 ft. a chance of 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 180901
cwfbox
expires:202607182215;;167618

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
501 am edt sat jul 18 2026

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


anz234-182215-
buzzards bay-
501 am edt sat jul 18 2026

...small craft advisory in effect from 11 am edt this morning
through sunday morning...

.today...sw winds 10 to 15 kt. gusts up to 20 kt, increasing to
30 kt this afternoon. seas 2 to 4 ft. wave detail: sw 2 ft at
4 seconds and se 1 foot at 7 seconds. areas of smoke. showers
with a chance of tstms this afternoon. 
.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 se 2 ft at 8 seconds.
a chance of tstms. showers likely in the evening, then a chance
of showers after midnight. 
.sun...w winds 10 to 15 kt. gusts up to 25 kt in the morning.
seas 2 to 4 ft. wave detail: sw 3 ft at 7 seconds and w 1 foot at
4 seconds. 
.sun night...nw winds 5 to 10 kt. seas around 2 ft. wave detail:
s 2 ft at 7 seconds and nw 1 foot at 3 seconds. 
.mon and mon night...s winds 5 to 10 kt. seas around 2 ft. wave
detail: se 2 ft at 6 seconds and sw 2 ft at 6 seconds. 
.tue...s winds 10 to 15 kt with gusts up to 25 kt. seas 2 to
3 ft. wave detail: sw 2 ft at 4 seconds and se 1 foot at
9 seconds. a chance of showers and tstms. 
.tue night...s winds 20 to 25 kt with gusts up to 30 kt. seas
3 to 5 ft. showers with a chance of tstms. 
.wed...sw winds 25 to 30 kt with gusts up to 35 kt. seas 4 to
6 ft. showers.
.wed night...sw winds 20 to 25 kt with gusts up to 35 kt. seas
3 to 5 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 180901
cwfbox
expires:202607182215;;167619

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
501 am edt sat jul 18 2026

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


anz235-182215-
rhode island sound-
501 am edt sat jul 18 2026

...small craft advisory in effect from 11 am edt this morning
through sunday morning...

.today...s winds 10 to 15 kt with gusts up to 25 kt. seas 2 to
3 ft. wave detail: sw 3 ft at 5 seconds and se 1 foot at
8 seconds. areas of smoke. showers likely with a chance of tstms
this afternoon with vsby 1 to 3 nm. 
.tonight...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 s 3 ft at 8 seconds.
a chance of tstms. showers likely in the evening, then a chance
of showers after midnight. 
.sun...w winds 10 to 15 kt. gusts up to 25 kt in the morning.
seas 3 to 5 ft. wave detail: sw 5 ft at 7 seconds and se 2 ft at
8 seconds. 
.sun night...nw winds 5 to 10 kt. seas 2 to 4 ft. wave detail: sw
4 ft at 6 seconds and se 1 foot at 12 seconds. 
.mon and mon night...s winds 5 to 10 kt. seas 2 to 3 ft. wave
detail: sw 3 ft at 7 seconds and se 1 foot at 12 seconds. 
.tue...s winds 15 to 20 kt. seas 2 to 3 ft. wave detail: s 3 ft
at 8 seconds and w 1 foot at 5 seconds. a chance of showers and
tstms. 
.tue night...s winds 20 to 25 kt with gusts up to 30 kt. seas
5 to 7 ft. showers with a chance of tstms. 
.wed...sw winds 20 to 25 kt with gusts up to 30 kt. seas 7 to
10 ft. showers.
.wed night...sw winds 20 to 25 kt with gusts up to 30 kt. seas
6 to 9 ft. a chance of 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 180901
cwfbox
expires:202607182215;;167622

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
501 am edt sat jul 18 2026

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


anz236-182215-
narragansett bay-
501 am edt sat jul 18 2026

...small craft advisory in effect from 11 am edt this morning
through sunday morning...

.today...s winds 5 to 10 kt, increasing to 10 to 15 kt this
afternoon. gusts up to 25 kt. waves 2 to 3 ft. areas of smoke.
showers with a chance of tstms this afternoon with vsby 1 to
3 nm. 
.tonight...sw winds 15 to 20 kt, diminishing to 10 to 15 kt after
midnight. gusts up to 30 kt. waves 2 to 3 ft. a chance of tstms.
showers likely in the evening, then a chance of showers after
midnight. 
.sun...nw winds 10 to 15 kt. gusts up to 20 kt in the morning.
waves 2 to 3 ft. 
.sun night...nw winds 5 to 10 kt. waves around 2 ft. 
.mon and mon night...s winds 5 to 10 kt. 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 and tstms. 
.tue night through wed night...sw winds 15 to 20 kt with gusts up
to 30 kt. waves 3 to 5 ft. showers with a chance of tstms.  

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 180901
cwfbox
expires:202607182215;;167610

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
501 am edt sat jul 18 2026

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


anz250-182215-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
501 am edt sat jul 18 2026

...small craft advisory in effect from 11 am edt this morning
through sunday morning...

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

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 180901
cwfbox
expires:202607182215;;167613

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
501 am edt sat jul 18 2026

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


anz254-182215-
coastal waters from provincetown ma to chatham ma to nantucket ma
out 20 nm-
501 am edt sat jul 18 2026

...small craft advisory in effect from 11 am edt this morning
through sunday evening...

.today...sw winds 10 to 15 kt, becoming s 15 to 20 kt this
afternoon. gusts up to 25 kt. seas 2 to 4 ft. wave detail: s 4 ft
at 4 seconds and nw 1 foot at 3 seconds. patchy smoke. a chance
of showers and tstms this afternoon. 
.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 tstms. showers likely in the evening, then
a chance of showers after midnight. 
.sun...w winds 15 to 20 kt with gusts up to 30 kt, becoming nw
10 to 15 kt with gusts up to 20 kt in the afternoon. seas 3 to
5 ft. wave detail: s 5 ft at 7 seconds and w 2 ft at 4 seconds. 
.sun night...w winds 5 to 10 kt, becoming nw after midnight. seas
2 to 4 ft. wave detail: se 3 ft at 7 seconds and nw 1 foot at
4 seconds. 
.mon and mon night...s winds 5 to 10 kt. seas 2 to 3 ft. wave
detail: s 3 ft at 8 seconds and nw 1 foot at 4 seconds. 
.tue...se winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
3 ft. wave detail: s 3 ft at 5 seconds and w 1 foot at 3 seconds.
a chance of showers. 
.tue night...s winds 20 to 25 kt with gusts up to 35 kt. seas
5 to 7 ft. showers with a chance of tstms. 
.wed...s winds 20 to 25 kt with gusts up to 35 kt. seas 6 to
9 ft, except 9 to 13 ft s and e of nantucket. showers.
.wed night...sw winds 20 to 25 kt with gusts up to 30 kt. seas
6 to 9 ft. a chance of 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 180901
cwfbox
expires:202607182215;;167614

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
501 am edt sat jul 18 2026

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


anz255-182215-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
501 am edt sat jul 18 2026

...small craft advisory in effect from 11 am edt this morning
through sunday evening...

.today...s winds 10 to 15 kt with gusts up to 25 kt. seas 2 to
3 ft. wave detail: sw 3 ft at 5 seconds and se 1 foot at
8 seconds. patchy smoke. a chance of showers and tstms this
afternoon. 
.tonight...sw winds 20 to 25 kt with gusts up to 30 kt. seas 3 to
5 ft, building to 5 to 6 ft after midnight. wave detail: s 5 ft
at 5 seconds and nw 1 foot at 6 seconds, becoming sw 6 ft at
6 seconds and nw 2 ft at 6 seconds. a chance of tstms. showers in
the evening, then a chance of showers after midnight. 
.sun...w winds 15 to 20 kt with gusts up to 25 kt, diminishing to
10 to 15 kt in the afternoon. seas 4 to 6 ft. wave detail: w 6 ft
at 6 seconds and e 1 foot at 9 seconds. 
.sun night...w winds around 10 kt, becoming nw after midnight.
seas 3 to 4 ft. wave detail: sw 4 ft at 7 seconds and nw 1 foot
at 3 seconds. 
.mon and mon night...s winds 5 to 10 kt. seas 2 to 4 ft. wave
detail: s 4 ft at 8 seconds and nw 1 foot at 3 seconds. 
.tue...se winds 15 to 20 kt. seas 2 to 3 ft. wave detail: s 3 ft
at 7 seconds and nw 1 foot at 5 seconds. a chance of showers. 
.tue night...s winds 25 to 30 kt. seas 5 to 7 ft. showers with a
chance of tstms. 
.wed...sw winds 25 to 30 kt with gusts up to 35 kt. seas 9 to
12 ft. showers.
.wed night...sw winds 20 to 25 kt with gusts up to 30 kt. seas
7 to 10 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.

$$