fzus51 kbox 180503
cwfbox
expires:202609181800;;636768

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 am edt fri sep 18 2026

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


anz231-181800-
cape cod bay-
103 am edt fri sep 18 2026

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

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 180503
cwfbox
expires:202609181800;;636772

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 am edt fri sep 18 2026

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


anz232-181800-
nantucket sound-
103 am edt fri sep 18 2026

.rest of tonight...sw winds around 15 kt with gusts up to 20 kt.
seas 2 to 3 ft. wave detail: sw 2 ft at 3 seconds and e 1 foot at
7 seconds. a chance of showers. 
.fri...w winds 10 to 15 kt with gusts up to 20 kt, becoming n
5 to 10 kt in the afternoon. seas 2 to 3 ft. wave detail: w 2 ft
at 3 seconds and e 1 foot at 7 seconds. 
.fri night...n winds 10 to 15 kt, increasing to 15 to 20 kt after
midnight. gusts up to 25 kt. seas 2 to 3 ft. wave detail: ne 3 ft
at 4 seconds and w 1 foot at 5 seconds. 
.sat...ne winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. seas 2 to 3 ft. wave detail: ne 3 ft at 4 seconds and
w 1 foot at 5 seconds. 
.sat night...e winds 5 to 10 kt, becoming se after midnight. seas
around 2 ft. wave detail: se 1 foot at 3 seconds and ne 1 foot at
7 seconds. 
.sun...se winds 5 to 10 kt. seas around 2 ft. wave detail: se
2 ft at 3 seconds and e 1 foot at 7 seconds. a chance of showers
in the afternoon. 
.sun night...se winds 10 to 15 kt. seas 2 to 3 ft. showers
likely. 
.mon through tue...ne winds 20 to 25 kt with gusts up to 30 kt.
seas 2 to 4 ft. a chance of showers. 
.tue night...ne winds 25 to 30 kt with gusts up to 35 kt. seas
3 to 4 ft.  

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 180503
cwfbox
expires:202609181800;;636773

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 am edt fri sep 18 2026

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


anz233-181800-
vineyard sound-
103 am edt fri sep 18 2026

.rest of tonight...sw winds around 15 kt with gusts up to 20 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.
.fri...w winds 10 to 15 kt, becoming n around 5 kt in the
afternoon. seas around 2 ft. wave detail: sw 2 ft at 5 seconds
and se 1 foot at 12 seconds.
.fri night...ne winds 10 to 15 kt, increasing to 15 to 20 kt
after midnight. seas 2 to 3 ft. wave detail: ne 2 ft at 3 seconds
and w 1 foot at 5 seconds. 
.sat...ne winds 10 to 15 kt with gusts up to 20 kt, diminishing
to 5 to 10 kt in the afternoon. seas around 2 ft. wave detail: ne
2 ft at 4 seconds and sw 1 foot at 5 seconds. 
.sat night...e winds 5 to 10 kt. seas 1 foot or less. wave
detail: se 1 foot at 2 seconds and e 1 foot at 6 seconds. 
.sun...se winds 5 to 10 kt. seas around 2 ft. wave detail: s 2 ft
at 3 seconds and se 1 foot at 11 seconds. a chance of showers in
the afternoon. 
.sun night...e winds 10 to 15 kt. seas 2 to 4 ft. showers likely.
.mon and mon night...ne winds 15 to 20 kt with gusts up to 25 kt.
seas 2 to 4 ft. a chance of showers. 
.tue...ne winds 20 to 25 kt with gusts up to 30 kt. seas 3 to
5 ft. a chance of showers. 
.tue night...ne winds 20 to 25 kt with gusts up to 30 kt. seas
3 to 5 ft.  

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 180503
cwfbox
expires:202609181800;;636774

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 am edt fri sep 18 2026

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


anz234-181800-
buzzards bay-
103 am edt fri sep 18 2026

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

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 180503
cwfbox
expires:202609181800;;636775

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 am edt fri sep 18 2026

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


anz235-181800-
rhode island sound-
103 am edt fri sep 18 2026

.rest of tonight...sw winds 10 to 15 kt with gusts up to 20 kt.
seas 2 to 3 ft. wave detail: sw 3 ft at 4 seconds and se 1 foot
at 9 seconds. a chance of showers.
.fri...nw winds around 10 kt, becoming n in the afternoon. seas
2 to 3 ft. wave detail: sw 3 ft at 5 seconds and se 1 foot at
10 seconds. 
.fri night...n winds 10 to 15 kt, becoming ne 15 to 20 kt after
midnight. seas 2 to 3 ft. wave detail: n 3 ft at 5 seconds and w
2 ft at 5 seconds. 
.sat...ne winds 15 to 20 kt, diminishing to 5 to 10 kt in the
afternoon. seas 2 to 3 ft. wave detail: ne 3 ft at 5 seconds and
sw 1 foot at 5 seconds. 
.sat night...e winds 5 to 10 kt. seas around 2 ft. wave detail: e
2 ft at 8 seconds and se 1 foot at 3 seconds. 
.sun...se winds 10 to 15 kt. seas 2 to 3 ft. wave detail: se 3 ft
at 4 seconds and se 1 foot at 11 seconds. showers likely in the
afternoon. 
.sun night...se winds 10 to 15 kt, becoming e with gusts up to
20 kt after midnight. seas 3 to 5 ft. showers likely. 
.mon and mon night...ne winds 15 to 20 kt with gusts up to 25 kt.
seas 2 to 4 ft. a chance of showers. 
.tue...ne winds 20 to 25 kt with gusts up to 30 kt. seas 3 to
5 ft. a chance of showers. 
.tue night...ne winds 25 to 30 kt. seas 3 to 5 ft.  

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 180503
cwfbox
expires:202609181800;;636778

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 am edt fri sep 18 2026

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


anz236-181800-
narragansett bay-
103 am edt fri sep 18 2026

.rest of tonight...sw winds 10 to 15 kt with gusts up to 20 kt.
waves around 2 ft. a chance of showers. 
.fri...nw winds 5 to 10 kt, becoming n in the afternoon. waves
around 2 ft. patchy fog in the morning. 
.fri night...n winds 10 to 15 kt. waves around 2 ft. 
.sat...ne winds 10 to 15 kt, diminishing to 5 to 10 kt in the
afternoon. waves around 2 ft. 
.sat night...se winds 5 to 10 kt. waves 1 foot or less. 
.sun...se winds 5 to 10 kt. waves around 2 ft. showers likely in
the afternoon. 
.sun night...se winds 5 to 10 kt, becoming ne 10 to 15 kt after
midnight. waves 2 to 3 ft. showers likely.
.mon through tue...ne winds 15 to 20 kt with gusts up to 25 kt.
waves 2 to 3 ft. a chance of showers. 
.tue night...ne winds 15 to 20 kt with gusts up to 25 kt. waves
2 to 3 ft.  

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 180503
cwfbox
expires:202609181800;;636766

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 am edt fri sep 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-
103 am edt fri sep 18 2026

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

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 180503
cwfbox
expires:202609181800;;636769

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 am edt fri sep 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-
103 am edt fri sep 18 2026

.rest of tonight...sw 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 2 ft at
8 seconds. a chance of showers. 
.fri...w winds 10 to 15 kt with gusts up to 20 kt, becoming n
5 to 10 kt in the afternoon. seas 2 to 3 ft. wave detail: w 2 ft
at 4 seconds and e 2 ft at 8 seconds. patchy fog. vsby 1 nm or
less, increasing to 1 to 3 nm in the afternoon. 
.fri night...n winds 10 to 15 kt, increasing to 15 to 20 kt after
midnight. gusts up to 25 kt. seas 2 to 4 ft. wave detail: n 4 ft
at 5 seconds. 
.sat...ne winds 10 to 15 kt with gusts up to 20 kt, diminishing
to 5 to 10 kt in the afternoon. seas 3 to 4 ft. wave detail: ne
4 ft at 6 seconds and w 1 foot at 5 seconds. 
.sat night and sun...se winds 5 to 10 kt. seas 2 to 3 ft. wave
detail: ne 3 ft at 7 seconds and se 2 ft at 3 seconds. 
.sun night...e winds 5 to 10 kt. seas 2 to 4 ft. wave detail: e
3 ft at 6 seconds and sw 3 ft at 7 seconds. showers likely. 
.mon through tue...ne winds 15 to 20 kt with gusts up to 25 kt.
seas 3 to 5 ft. a chance of showers. 
.tue night...ne winds 25 to 30 kt. seas 5 to 7 ft.  

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 180503
cwfbox
expires:202609181800;;636770

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 am edt fri sep 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-
103 am edt fri sep 18 2026

.rest of tonight...sw winds around 15 kt with gusts up to 20 kt.
seas 2 to 3 ft. wave detail: sw 3 ft at 4 seconds and e 2 ft at
8 seconds. a chance of showers. 
.fri...w winds 10 to 15 kt with gusts up to 20 kt, becoming n
5 to 10 kt in the afternoon. seas 2 to 3 ft. wave detail: sw 3 ft
at 5 seconds and e 2 ft at 8 seconds. a chance of showers in the
morning. 
.fri night...ne winds 10 to 15 kt, increasing to 15 to 20 kt with
gusts up to 25 kt after midnight. seas 2 to 4 ft. wave detail: n
3 ft at 5 seconds and sw 2 ft at 5 seconds. 
.sat...ne winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. seas 2 to 4 ft. wave detail: ne 3 ft at 5 seconds and
sw 1 foot at 5 seconds. 
.sat night...e winds 5 to 10 kt. seas 2 to 3 ft. wave detail: ne
2 ft at 7 seconds and nw 1 foot at 4 seconds. 
.sun...se winds around 10 kt. seas 2 to 3 ft. wave detail: se
2 ft at 4 seconds and e 2 ft at 8 seconds. a chance of showers in
the afternoon. 
.sun night...se winds 10 to 15 kt. seas 4 to 6 ft. showers
likely. 
.mon...ne winds 15 to 20 kt with gusts up to 25 kt. seas 3 to
5 ft. showers likely. 
.mon night and tue...ne winds 20 to 25 kt with gusts up to 30 kt.
seas 3 to 5 ft. a chance of showers. 
.tue night...ne winds 25 to 30 kt with gusts up to 35 kt. seas
4 to 6 ft.  

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.

$$