fzus51 kbox 180505
cwfbox
expires:202607181800;;156681

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

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


anz231-181800-
cape cod bay-
105 am edt sat jul 18 2026

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

.rest of tonight...sw winds around 5 kt. seas 1 foot or less.
wave detail: n 1 foot at 3 seconds and s 1 foot at 4 seconds.
patchy smoke. 
.sat...sw winds 5 to 10 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: s 2 ft at 3 seconds and n 1 foot at 3 seconds.
patchy smoke. showers likely in the afternoon. 
.sat night...sw winds 15 to 20 kt with gusts up to 30 kt. seas
3 to 5 ft. wave detail: sw 4 ft at 4 seconds and e 1 foot at
11 seconds. showers with a chance of tstms in the evening, then
showers likely after midnight. some tstms may produce heavy
rainfall in the evening. 
.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 4 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 n 1 foot at 5 seconds. 
.mon and mon night...s winds 5 to 10 kt. seas around 2 ft. wave
detail: n 1 foot at 4 seconds and s 1 foot at 6 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 10 to 15 kt with gusts up to 25 kt. seas
2 to 4 ft. showers likely with a chance of tstms. 
.wed...sw winds 15 to 20 kt with gusts up to 30 kt. seas 3 to
4 ft. showers likely. 
.wed night...sw winds 15 to 20 kt with gusts up to 25 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 180505
cwfbox
expires:202607181800;;156685

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

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


anz232-181800-
nantucket sound-
105 am edt sat jul 18 2026

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

.rest of tonight...sw winds 5 to 10 kt. seas around 2 ft. wave
detail: n 1 foot at 4 seconds and sw 1 foot at 4 seconds. patchy
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 n 1 foot at 4 seconds. patchy smoke.
showers with a chance of tstms in the afternoon. some tstms may
produce heavy rainfall in the afternoon. 
.sat night...sw winds 15 to 20 kt with gusts up to 30 kt. seas
3 to 5 ft. wave detail: sw 5 ft at 6 seconds and se 1 foot at
9 seconds. a chance of tstms. showers in the evening, then
showers likely after midnight. some tstms may produce heavy
rainfall. 
.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: w 4 ft
at 5 seconds and se 1 foot at 7 seconds. 
.sun night...nw winds 5 to 10 kt. seas 2 to 3 ft. wave detail: w
1 foot at 3 seconds and n 1 foot at 4 seconds. 
.mon and mon night...s winds 5 to 10 kt. seas around 2 ft. wave
detail: sw 2 ft at 6 seconds and n 1 foot at 3 seconds. 
.tue...s winds 15 to 20 kt with gusts up to 25 kt. seas 2 to
3 ft. a chance of showers. 
.tue night...s winds 20 to 25 kt with gusts up to 30 kt. seas
3 to 5 ft. showers likely 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
3 to 5 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 180505
cwfbox
expires:202607181800;;156686

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

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


anz233-181800-
vineyard sound-
105 am edt sat jul 18 2026

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

.rest of tonight...sw winds around 5 kt. seas around 2 ft. wave
detail: sw 2 ft at 5 seconds and w 1 foot at 2 seconds. patchy
smoke. 
.sat...sw winds 5 to 10 kt, becoming s around 15 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 5 seconds and sw
1 foot at 2 seconds, becoming sw 4 ft at 5 seconds and n 1 foot
at 4 seconds. patchy smoke. showers with a chance of tstms in the
afternoon. some tstms may produce heavy rainfall in the
afternoon. 
.sat night...sw winds 15 to 20 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
12 seconds. a chance of tstms. showers. some tstms may produce
heavy rainfall. 
.sun...w winds 10 to 15 kt. gusts up to 25 kt in the morning.
seas 2 to 4 ft. wave detail: sw 4 ft at 7 seconds and w 2 ft at
4 seconds. 
.sun night...nw winds 5 to 10 kt. seas 2 to 3 ft. wave detail: sw
3 ft at 8 seconds and n 1 foot at 5 seconds. 
.mon and mon night...s winds 5 to 10 kt. seas 2 to 3 ft. wave
detail: sw 3 ft at 8 seconds and e 2 ft at 8 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 20 to 25 kt with gusts up to 30 kt. seas
3 to 5 ft. showers with a chance of tstms. 
.wed...sw winds 20 to 25 kt with gusts up to 35 kt. seas 5 to
7 ft. showers with a chance of tstms. 
.wed night...sw winds 20 to 25 kt with gusts up to 30 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 180505
cwfbox
expires:202607181800;;156687

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

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


anz234-181800-
buzzards bay-
105 am edt sat jul 18 2026

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

.rest of tonight...sw winds around 5 kt. seas 1 foot or less.
wave detail: e 1 foot at 2 seconds and w 1 foot at 4 seconds.
patchy smoke. 
.sat...sw winds 10 to 15 kt. gusts up to 20 kt, increasing to
30 kt in the afternoon. seas 2 to 4 ft. wave detail: sw 3 ft at
4 seconds and ne 1 foot at 3 seconds. patchy smoke. showers with
a chance of tstms in the afternoon. some tstms may produce heavy
rainfall in the afternoon. 
.sat night...sw winds 15 to 20 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. a chance of tstms. showers in the evening, then
showers likely after midnight. some tstms may produce heavy
rainfall. 
.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 5 seconds and se 1 foot
at 7 seconds. 
.sun night...nw winds 5 to 10 kt. seas 2 to 3 ft. wave detail: sw
2 ft at 7 seconds and nw 1 foot at 4 seconds. 
.mon and mon night...s winds 5 to 10 kt. seas around 2 ft. wave
detail: ne 2 ft at 5 seconds and sw 2 ft at 7 seconds. 
.tue...s winds 10 to 15 kt with gusts up to 25 kt. seas 2 to
3 ft. a chance of showers and tstms. 
.tue night...s winds 20 to 25 kt with gusts up to 30 kt. seas
3 to 4 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 with a chance of tstms. 
.wed night...sw winds 20 to 25 kt with gusts up to 30 kt. seas
3 to 5 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 180505
cwfbox
expires:202607181800;;156688

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

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


anz235-181800-
rhode island sound-
105 am edt sat jul 18 2026

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

.rest of tonight...sw winds 5 to 10 kt. seas around 2 ft. wave
detail: sw 2 ft at 4 seconds and e 1 foot at 2 seconds. patchy
smoke. 
.sat...s winds 10 to 15 kt with gusts up to 25 kt. seas around
2 ft, building to 3 to 4 ft in the afternoon. wave detail: s 2 ft
at 5 seconds and sw 1 foot at 2 seconds, becoming sw 4 ft at
5 seconds and n 1 foot at 4 seconds. patchy smoke. showers with a
chance of tstms in the afternoon. some tstms may produce heavy
rainfall in the afternoon. 
.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 3 ft at
10 seconds. a chance of tstms. showers in the evening, then a
chance of showers after midnight. some tstms may produce heavy
rainfall. 
.sun...w winds 10 to 15 kt. gusts up to 25 kt in the morning.
seas 3 to 5 ft. wave detail: s 5 ft at 7 seconds and w 1 foot at
4 seconds. 
.sun night...nw winds 5 to 10 kt. seas 2 to 4 ft. wave detail: s
4 ft at 8 seconds and n 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 se 3 ft at 8 seconds. 
.tue...s winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
3 ft. 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 likely with a chance of tstms. 
.wed...sw winds 20 to 25 kt with gusts up to 30 kt. seas 6 to
9 ft. showers likely with a chance of tstms. 
.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 180505
cwfbox
expires:202607181800;;156691

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

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


anz236-181800-
narragansett bay-
105 am edt sat jul 18 2026

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

.rest of tonight...sw winds around 5 kt. waves around 2 ft. areas
of smoke. 
.sat...s winds 5 to 10 kt, increasing to 10 to 15 kt in the
afternoon. gusts up to 25 kt. waves 2 to 3 ft. patchy smoke.
showers with a chance of tstms in the afternoon. some tstms may
produce heavy rainfall in the afternoon. 
.sat night...sw winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. gusts up to 30 kt. waves 2 to 4 ft. showers with
a chance of tstms in the evening, then showers likely after
midnight. some tstms may produce heavy rainfall in the evening. 
.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 2 to 3 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...s winds 15 to 20 kt with gusts up to 25 kt. waves
2 to 4 ft. showers likely with a chance of tstms. 
.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. waves
2 to 4 ft. a chance of 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 180505
cwfbox
expires:202607181800;;156679

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

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


anz250-181800-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
105 am edt sat jul 18 2026

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

.rest of tonight...sw winds around 5 kt. seas around 2 ft. wave
detail: n 1 foot at 3 seconds and se 1 foot at 5 seconds. patchy
smoke. 
.sat...s winds 5 to 10 kt with gusts up to 20 kt, increasing to
20 to 25 kt with gusts up to 30 kt in the afternoon. seas around
2 ft, building to 3 to 5 ft in the afternoon. wave detail: s 2 ft
at 5 seconds and n 1 foot at 3 seconds, becoming s 5 ft at
5 seconds and w 2 ft at 4 seconds. patchy 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: s 5 ft at 6 seconds and n 1 foot at
13 seconds. a chance of showers. a chance of tstms in the
evening. some tstms may produce heavy rainfall in the evening. 
.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: sw
3 ft at 5 seconds and se 2 ft at 7 seconds. 
.sun night...nw winds 5 to 10 kt. seas 2 to 3 ft. wave detail: nw
2 ft at 4 seconds and s 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 3 seconds and se 2 ft at
8 seconds. 
.tue...s winds 10 to 15 kt with gusts up to 25 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
3 to 4 ft. showers with a chance of tstms. 
.wed...s winds 15 to 20 kt with gusts up to 30 kt. seas 3 to
5 ft. showers.
.wed night...sw winds 15 to 20 kt with gusts up to 30 kt. seas
3 to 5 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 180505
cwfbox
expires:202607181800;;156682

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

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


anz254-181800-
coastal waters from provincetown ma to chatham ma to nantucket ma
out 20 nm-
105 am edt sat jul 18 2026

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

.rest of tonight...sw winds 5 to 10 kt. seas around 2 ft. wave
detail: s 2 ft at 6 seconds and n 1 foot at 5 seconds. patchy
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 4 seconds. patchy smoke. a chance of
showers in the afternoon.
.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 6 seconds and e 2 ft at
8 seconds. a chance of tstms. showers. some tstms may produce
heavy rainfall. 
.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 4 to
6 ft, subsiding to 2 to 4 ft in the afternoon. wave detail: s
5 ft at 7 seconds and e 1 foot at 13 seconds, becoming s 3 ft at
7 seconds and nw 2 ft at 4 seconds. 
.sun night...nw winds 5 to 10 kt. seas 2 to 4 ft. wave detail: s
3 ft at 8 seconds and se 2 ft at 8 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 se 2 ft at 8 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 20 to 25 kt with gusts up to 30 kt. seas
4 to 6 ft. showers likely with a chance of tstms. 
.wed...s winds 20 to 25 kt with gusts up to 30 kt. seas 6 to
9 ft. showers likely. 
.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 180505
cwfbox
expires:202607181800;;156683

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

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


anz255-181800-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
105 am edt sat jul 18 2026

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

.rest of tonight...sw winds 5 to 10 kt. seas around 2 ft. wave
detail: w 2 ft at 5 seconds and n 1 foot at 3 seconds. patchy
smoke. 
.sat...s winds 10 to 15 kt with gusts up to 25 kt. seas 2 to
4 ft. wave detail: sw 4 ft at 5 seconds and n 1 foot at
3 seconds. patchy smoke. a chance of showers in the afternoon. 
.sat night...sw winds 20 to 25 kt with gusts up to 30 kt. seas
5 to 7 ft. wave detail: w 7 ft at 7 seconds and se 1 foot at
9 seconds. a chance of tstms. showers in the evening, then
showers likely after midnight. some tstms may produce heavy
rainfall. 
.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, subsiding to 4 to
5 ft in the afternoon. wave detail: w 7 ft at 7 seconds and e
2 ft at 8 seconds, becoming sw 5 ft at 8 seconds and nw 1 foot at
5 seconds. 
.sun night...w winds around 10 kt, becoming nw after midnight.
seas 3 to 5 ft. wave detail: sw 5 ft at 8 seconds and n 1 foot at
4 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 n 1 foot at 4 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 20 to 25 kt with gusts up to 30 kt. seas
5 to 7 ft. showers likely with a chance of tstms. 
.wed...sw winds around 25 kt with gusts up to 30 kt. seas 8 to
11 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.

$$