fzus51 kbox 192004
cwfbox
expires:202607200900;;250419

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
404 pm edt sun jul 19 2026

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


anz231-200900-
cape cod bay-
404 pm edt sun jul 19 2026

.tonight...nw winds around 5 kt. seas around 2 ft this evening,
then 1 foot or less. wave detail: nw 1 foot at 4 seconds and se
1 foot at 8 seconds, becoming n 1 foot at 5 seconds and e 1 foot
at 12 seconds. 
.mon...nw winds around 5 kt, becoming se in the afternoon. seas
1 foot or less. wave detail: n 1 foot at 5 seconds and e 1 foot
at 12 seconds. 
.mon night...s winds 5 to 10 kt. seas around 2 ft in the evening,
then 1 foot or less. wave detail: sw 1 foot at 3 seconds and ne
1 foot at 5 seconds, becoming sw 1 foot at 2 seconds and e 1 foot
at 4 seconds. 
.tue...s winds 5 to 10 kt, becoming se 10 to 15 kt in the
afternoon. gusts up to 20 kt. seas 2 to 3 ft. wave detail: s 2 ft
at 4 seconds and e 1 foot at 12 seconds. 
.tue night and wed...sw winds 15 to 20 kt with gusts up to 30 kt.
seas 2 to 4 ft. wave detail: s 4 ft at 4 seconds and e 2 ft at
10 seconds. showers with a chance of tstms. 
.wed night...sw winds 15 to 20 kt with gusts up to 30 kt,
becoming w 10 to 15 kt with gusts up to 20 kt after midnight.
seas 2 to 4 ft. wave detail: sw 4 ft at 5 seconds and se 2 ft at
10 seconds. a chance of showers. a chance of tstms in the
evening. 
.thu...n winds 5 to 10 kt. seas around 2 ft. a chance of showers.
.thu night through fri night...sw winds around 5 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 192004
cwfbox
expires:202607200900;;250423

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
404 pm edt sun jul 19 2026

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


anz232-200900-
nantucket sound-
404 pm edt sun jul 19 2026

.tonight...w winds 5 to 10 kt, becoming n after midnight. seas
around 2 ft. wave detail: w 1 foot at 3 seconds and s 1 foot at
7 seconds. 
.mon...nw winds 5 to 10 kt, becoming sw in the afternoon. seas
around 2 ft. wave detail: nw 1 foot at 3 seconds and se 1 foot at
8 seconds. 
.mon night...s winds around 10 kt. seas around 2 ft. wave detail:
sw 1 foot at 3 seconds and s 1 foot at 8 seconds. 
.tue...s winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
3 ft. wave detail: s 2 ft at 4 seconds and e 1 foot at
12 seconds. 
.tue night...s winds 15 to 20 kt, increasing to 20 to 25 kt after
midnight. gusts up to 30 kt. seas 3 to 5 ft. wave detail: sw 4 ft
at 5 seconds and e 1 foot at 11 seconds. showers with a chance of
tstms. 
.wed...sw winds 20 to 25 kt, increasing to 25 to 30 kt in the
afternoon. seas 4 to 6 ft. wave detail: sw 4 ft at 4 seconds and
s 4 ft at 7 seconds. showers with a chance of tstms. 
.wed night...sw winds 25 to 30 kt, becoming w 20 to 25 kt after
midnight. seas 4 to 6 ft. a chance of showers. a chance of tstms
in the evening. 
.thu...n winds 10 to 15 kt. seas 3 to 5 ft. a chance of showers. 
.thu night through fri night...sw 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 192004
cwfbox
expires:202607200900;;250424

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
404 pm edt sun jul 19 2026

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


anz233-200900-
vineyard sound-
404 pm edt sun jul 19 2026

.tonight...w winds 5 to 10 kt, becoming n after midnight. seas
2 to 3 ft. wave detail: sw 3 ft at 7 seconds and se 1 foot at
13 seconds. 
.mon...nw winds around 5 kt, becoming sw in the afternoon. seas
around 2 ft. wave detail: sw 2 ft at 8 seconds and w 1 foot at
5 seconds. 
.mon night...s winds 5 to 10 kt. seas around 2 ft. wave detail:
sw 2 ft at 8 seconds and sw 1 foot at 3 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 e 1 foot at
12 seconds. a chance of showers in the afternoon. 
.tue night...s winds 15 to 20 kt, increasing to 20 to 25 kt after
midnight. seas 3 to 5 ft. wave detail: sw 5 ft at 8 seconds and
sw 3 ft at 5 seconds. showers with a chance of tstms. 
.wed...sw winds 20 to 25 kt with gusts up to 30 kt. seas 5 to
7 ft. wave detail: sw 7 ft at 9 seconds and sw 3 ft at 6 seconds.
showers with a chance of tstms. 
.wed night...sw winds 20 to 25 kt with gusts up to 30 kt,
becoming w 15 to 20 kt after midnight. seas 5 to 7 ft. a chance
of showers. a chance of tstms in the evening. 
.thu...w winds around 10 kt. seas 3 to 5 ft. a chance of showers.
.thu night and fri...sw winds 5 to 10 kt, becoming e. seas 2 to
4 ft. 
.fri night...sw 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 192004
cwfbox
expires:202607200900;;250425

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
404 pm edt sun jul 19 2026

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


anz234-200900-
buzzards bay-
404 pm edt sun jul 19 2026

.tonight...w winds 5 to 10 kt, becoming n after midnight. seas
around 2 ft. wave detail: sw 2 ft at 6 seconds and se 1 foot at
13 seconds. 
.mon...nw winds around 5 kt, becoming sw 10 to 15 kt with gusts
up to 20 kt in the afternoon. seas around 2 ft. wave detail: sw
2 ft at 7 seconds and sw 1 foot at 4 seconds. 
.mon night...sw winds 10 to 15 kt, becoming s 5 to 10 kt after
midnight. seas around 2 ft. wave detail: sw 1 foot at 3 seconds
and sw 1 foot at 7 seconds. 
.tue...s winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
3 ft. wave detail: s 2 ft at 7 seconds and sw 1 foot at
3 seconds. a chance of showers in the afternoon. 
.tue night...s winds 15 to 20 kt with gusts up to 25 kt. seas
3 to 4 ft. wave detail: s 4 ft at 6 seconds and se 1 foot at
11 seconds. showers with a chance of tstms. 
.wed...sw winds 20 to 25 kt with gusts up to 35 kt. seas 4 to
6 ft. wave detail: sw 5 ft at 8 seconds and sw 4 ft at 4 seconds.
showers with a chance of tstms. 
.wed night...sw winds 20 to 25 kt with gusts up to 30 kt,
becoming w 15 to 20 kt after midnight. seas 3 to 5 ft. a chance
of showers. a chance of tstms in the evening. 
.thu...w winds around 10 kt. seas 2 to 4 ft. a chance of showers.
.thu night through fri night...sw 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 192004
cwfbox
expires:202607200900;;250426

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
404 pm edt sun jul 19 2026

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


anz235-200900-
rhode island sound-
404 pm edt sun jul 19 2026

.tonight...w winds around 10 kt, becoming n after midnight. seas
2 to 3 ft. wave detail: s 3 ft at 7 seconds and w 1 foot at
4 seconds. 
.mon...nw winds around 5 kt, becoming sw in the afternoon. seas
2 to 3 ft. wave detail: s 3 ft at 8 seconds and sw 1 foot at
8 seconds. 
.mon night...s winds around 10 kt. seas 2 to 3 ft. wave detail: s
3 ft at 8 seconds and sw 1 foot at 5 seconds. 
.tue...se winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
3 ft. wave detail: sw 3 ft at 6 seconds and se 1 foot at
12 seconds. a chance of showers in the afternoon. 
.tue night...s winds 15 to 20 kt, becoming sw 20 to 25 kt after
midnight. seas 3 to 4 ft, building to 4 to 6 ft after midnight.
wave detail: s 4 ft at 7 seconds, becoming sw 6 ft at 7 seconds
and e 1 foot at 11 seconds. showers with a chance of tstms. 
.wed...sw winds 20 to 25 kt with gusts up to 30 kt. seas 5 to
8 ft. wave detail: s 8 ft at 9 seconds and ne 3 ft at 10 seconds.
showers with a chance of tstms. 
.wed night...sw winds 20 to 25 kt with gusts up to 30 kt,
becoming w 15 to 20 kt after midnight. seas 5 to 8 ft. a chance
of showers. a chance of tstms in the evening. 
.thu...w winds around 10 kt. seas 4 to 6 ft. a chance of showers.
.thu night...sw winds 5 to 10 kt. seas 3 to 5 ft. 
.fri and fri night...e winds 5 to 10 kt, becoming sw. 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 192004
cwfbox
expires:202607200900;;250429

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
404 pm edt sun jul 19 2026

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


anz236-200900-
narragansett bay-
404 pm edt sun jul 19 2026

.tonight...nw winds 5 to 10 kt. waves around 2 ft. 
.mon...nw winds around 5 kt, becoming s in the afternoon. waves
around 2 ft. 
.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 in the afternoon. 
.tue night...s winds 15 to 20 kt. waves 2 to 4 ft. showers. a
chance of tstms in the evening. 
.wed...sw winds 15 to 20 kt with gusts up to 30 kt. waves 3 to
5 ft. showers likely with a chance of tstms. 
.wed night...sw winds 15 to 20 kt with gusts up to 25 kt,
becoming w 5 to 10 kt after midnight. waves 2 to 4 ft. a chance
of showers. a chance of tstms in the evening. 
.thu through fri night...sw 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 192004
cwfbox
expires:202607200900;;250417

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
404 pm edt sun jul 19 2026

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


anz250-200900-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
404 pm edt sun jul 19 2026

.tonight...nw winds 5 to 10 kt. gusts up to 20 kt this evening.
seas 2 to 3 ft. wave detail: nw 2 ft at 4 seconds and se 2 ft at
7 seconds. 
.mon...w winds 5 to 10 kt, becoming s in the afternoon. seas
around 2 ft. wave detail: w 1 foot at 3 seconds and se 1 foot at
8 seconds. 
.mon night...s winds 10 to 15 kt. gusts up to 20 kt in the
evening. seas around 2 ft. wave detail: w 2 ft at 3 seconds and s
2 ft at 8 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 e 1 foot at
12 seconds. 
.tue night...s winds around 15 kt with gusts up to 25 kt. seas
3 to 4 ft. wave detail: s 4 ft at 5 seconds and se 1 foot at
11 seconds. showers with a chance of tstms. 
.wed...s winds 15 to 20 kt with gusts up to 30 kt. seas 4 to
6 ft. wave detail: s 5 ft at 8 seconds and sw 3 ft at 4 seconds.
showers with a chance of tstms. 
.wed night...sw winds 15 to 20 kt, becoming w 10 to 15 kt after
midnight. gusts up to 30 kt. seas 4 to 6 ft. a chance of showers.
a chance of tstms in the evening. 
.thu...w winds 5 to 10 kt. seas 3 to 5 ft. 
.thu night through fri night...sw winds 5 to 10 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 192004
cwfbox
expires:202607200900;;250420

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
404 pm edt sun jul 19 2026

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


anz254-200900-
coastal waters from provincetown ma to chatham ma to nantucket ma
out 20 nm-
404 pm edt sun jul 19 2026

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

.tonight...sw winds 5 to 10 kt, becoming nw after midnight. seas
2 to 4 ft. wave detail: s 3 ft at 7 seconds and nw 2 ft at
4 seconds. 
.mon...nw winds 5 to 10 kt, becoming sw in the afternoon. seas
2 to 3 ft. wave detail: s 3 ft at 8 seconds and nw 1 foot at
4 seconds. 
.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. gusts up to 20 kt in the afternoon.
seas 2 to 3 ft. wave detail: se 3 ft at 5 seconds and w 1 foot at
3 seconds. 
.tue night...s winds 15 to 20 kt, increasing to 20 to 25 kt after
midnight. gusts up to 30 kt. seas 3 to 4 ft, building to 4 to
6 ft after midnight. wave detail: s 4 ft at 5 seconds and e
1 foot at 11 seconds, becoming sw 6 ft at 6 seconds. showers with
a chance of tstms. 
.wed...sw winds 20 to 25 kt with gusts up to 30 kt. seas 6 to
9 ft. wave detail: s 9 ft at 9 seconds and e 5 ft at 10 seconds.
showers with a chance of tstms. 
.wed night...sw winds 20 to 25 kt with gusts up to 30 kt. seas
7 to 10 ft. a chance of showers. a chance of tstms in the
evening. 
.thu...nw winds 10 to 15 kt with gusts up to 20 kt. seas 5 to
7 ft. a chance of showers. 
.thu night...s winds 5 to 10 kt. seas 3 to 5 ft. a chance of
showers. 
.fri and fri night...ne winds around 5 kt, becoming sw. 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 192004
cwfbox
expires:202607200900;;250421

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
404 pm edt sun jul 19 2026

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


anz255-200900-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
404 pm edt sun jul 19 2026

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

.tonight...w winds around 10 kt, becoming n after midnight. seas
3 to 4 ft. wave detail: sw 4 ft at 7 seconds and se 1 foot at
13 seconds. 
.mon...n winds around 5 kt, becoming sw in the afternoon. seas
3 to 4 ft. wave detail: s 4 ft at 8 seconds and w 2 ft at
7 seconds. 
.mon night...s winds 5 to 10 kt. seas 2 to 3 ft. wave detail: s
3 ft at 8 seconds and w 1 foot at 8 seconds. 
.tue...se winds 10 to 15 kt. gusts up to 20 kt in the afternoon.
seas 2 to 3 ft. wave detail: sw 3 ft at 6 seconds and se 1 foot
at 12 seconds. 
.tue night...s winds 15 to 20 kt, increasing to 20 to 25 kt after
midnight. gusts up to 30 kt. seas 3 to 5 ft, building to 5 to
7 ft after midnight. wave detail: sw 5 ft at 7 seconds and e
1 foot at 11 seconds, becoming s 7 ft at 8 seconds and sw 3 ft at
7 seconds. showers with a chance of tstms. 
.wed and wed night...w winds 20 to 25 kt with gusts up to 30 kt.
seas 7 to 10 ft. wave detail: s 10 ft at 9 seconds and sw 4 ft at
4 seconds. showers. a chance of tstms. 
.thu...nw winds 10 to 15 kt. seas 5 to 8 ft. a chance of showers.
.thu night...e winds 5 to 10 kt. seas 4 to 6 ft. a chance of
showers. 
.fri...ne winds around 5 kt. seas 3 to 5 ft. 
.fri night...s winds around 5 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.

$$