fzus51 kbox 210503
cwfbox
expires:202608211800;;087942

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 am edt fri aug 21 2026

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


anz231-211800-
cape cod bay-
103 am edt fri aug 21 2026

.rest of tonight...ne winds around 10 kt with gusts up to 20 kt.
seas around 2 ft. wave detail: n 1 foot at 3 seconds. rain.
.fri...ne winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
3 ft. wave detail: n 2 ft at 4 seconds. rain.
.fri night...ne winds 10 to 15 kt with gusts up to 20 kt. seas
around 2 ft. wave detail: ne 2 ft at 4 seconds. rain. patchy
drizzle after midnight. 
.sat...e winds 10 to 15 kt, diminishing to 5 to 10 kt in the
afternoon. seas around 2 ft. wave detail: n 2 ft at 4 seconds. a
chance of rain or patchy drizzle in the morning, then showers
likely in the afternoon. 
.sat night...se winds around 5 kt. seas around 2 ft. wave detail:
nw 1 foot at 4 seconds and e 1 foot at 4 seconds. showers likely.
.sun...s winds 5 to 10 kt. seas around 2 ft. wave detail: se
1 foot at 2 seconds and ne 1 foot at 4 seconds. a chance of
showers. 
.sun night...s winds 5 to 10 kt. seas around 2 ft. 
.mon through tue night...sw winds 5 to 10 kt with gusts up to
20 kt. seas around 2 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 210503
cwfbox
expires:202608211800;;087946

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 am edt fri aug 21 2026

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


anz232-211800-
nantucket sound-
103 am edt fri aug 21 2026

.rest of tonight...n winds 10 to 15 kt. seas around 2 ft. wave
detail: w 1 foot at 3 seconds and e 1 foot at 8 seconds. rain.
.fri...ne winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
3 ft. wave detail: ne 2 ft at 4 seconds and sw 1 foot at
3 seconds. rain.
.fri night...ne winds 10 to 15 kt with gusts up to 20 kt. seas
2 to 3 ft. wave detail: e 3 ft at 4 seconds and sw 1 foot at
5 seconds. rain. patchy drizzle after midnight. 
.sat...e winds 10 to 15 kt. seas around 2 ft. wave detail: e 2 ft
at 5 seconds and sw 1 foot at 5 seconds. a chance of rain or
patchy drizzle in the morning, then showers likely in the
afternoon. 
.sat night and sun...s winds 10 to 15 kt. seas around 2 ft. wave
detail: s 2 ft at 3 seconds and e 2 ft at 5 seconds. showers. a
chance of showers in the afternoon. 
.sun night...sw winds 10 to 15 kt. seas 2 to 3 ft. wave detail: s
2 ft at 4 seconds and e 1 foot at 7 seconds. a chance of showers.
.mon through tue night...sw winds 15 to 20 kt. seas 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 210503
cwfbox
expires:202608211800;;087947

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 am edt fri aug 21 2026

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


anz233-211800-
vineyard sound-
103 am edt fri aug 21 2026

.rest of tonight...ne winds 10 to 15 kt. seas around 2 ft. wave
detail: sw 1 foot at 4 seconds and e 1 foot at 6 seconds. rain.
.fri...ne winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
3 ft. wave detail: ne 2 ft at 3 seconds and s 1 foot at
4 seconds. rain.
.fri night...ne winds 10 to 15 kt. gusts up to 20 kt in the
evening. seas around 2 ft. wave detail: ne 2 ft at 4 seconds and
sw 1 foot at 5 seconds. rain. patchy drizzle after midnight. 
.sat...ne winds 10 to 15 kt. seas around 2 ft. wave detail: ne
1 foot at 4 seconds and sw 1 foot at 5 seconds. a chance of rain
or patchy drizzle in the morning, then showers likely in the
afternoon. 
.sat night...e winds 5 to 10 kt. seas around 2 ft. wave detail: s
1 foot at 5 seconds and ne 1 foot at 5 seconds. showers.
.sun...s winds 5 to 10 kt. seas around 2 ft. wave detail: s 2 ft
at 4 seconds and se 1 foot at 8 seconds. a chance of showers. 
.sun night...sw winds 5 to 10 kt. seas 2 to 3 ft. 
.mon through tue night...sw winds 10 to 15 kt with gusts up to
20 kt. seas 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 210503
cwfbox
expires:202608211800;;087948

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 am edt fri aug 21 2026

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


anz234-211800-
buzzards bay-
103 am edt fri aug 21 2026

.rest of tonight...ne winds 5 to 10 kt. seas around 2 ft. wave
detail: ne 1 foot at 3 seconds and sw 1 foot at 3 seconds. rain.
.fri...ne winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
3 ft. wave detail: ne 2 ft at 3 seconds and sw 1 foot at
3 seconds. rain.
.fri night...ne winds 10 to 15 kt. seas around 2 ft. wave detail:
ne 2 ft at 3 seconds and sw 1 foot at 5 seconds. rain. patchy
drizzle after midnight. 
.sat...ne winds 10 to 15 kt, diminishing to 5 to 10 kt in the
afternoon. seas around 2 ft. wave detail: ne 1 foot at 3 seconds
and sw 1 foot at 5 seconds. a chance of rain or patchy drizzle in
the morning, then showers likely in the afternoon. 
.sat night...e winds 5 to 10 kt. seas around 2 ft. wave detail:
ne 1 foot at 2 seconds and s 1 foot at 5 seconds. showers.
.sun...s winds 5 to 10 kt. seas around 2 ft. wave detail: se
1 foot at 3 seconds. showers likely in the morning. a chance of
showers in the afternoon. 
.sun night...sw winds 5 to 10 kt. seas around 2 ft. 
.mon through tue night...sw winds 15 to 20 kt with gusts up to
25 kt. seas 2 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 210503
cwfbox
expires:202608211800;;087949

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 am edt fri aug 21 2026

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


anz235-211800-
rhode island sound-
103 am edt fri aug 21 2026

.rest of tonight...n winds 10 to 15 kt with gusts up to 20 kt.
seas around 2 ft. wave detail: se 2 ft at 8 seconds and sw 1 foot
at 3 seconds. rain.
.fri...ne winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. seas 2 to 3 ft. wave detail: ne 3 ft at 5 seconds and
s 1 foot at 4 seconds. rain.
.fri night...ne winds 10 to 15 kt. gusts up to 20 kt in the
evening. seas around 2 ft. wave detail: ne 2 ft at 5 seconds and
sw 1 foot at 5 seconds. rain likely. patchy drizzle after
midnight. 
.sat...ne winds 10 to 15 kt. seas 2 to 3 ft. wave detail: ne 3 ft
at 5 seconds and sw 1 foot at 5 seconds. a chance of rain or
patchy drizzle in the morning, then showers likely in the
afternoon. 
.sat night...e winds 5 to 10 kt. seas 2 to 3 ft. wave detail: se
2 ft at 6 seconds. showers.
.sun...s winds 5 to 10 kt. seas 2 to 3 ft. wave detail: s 3 ft at
6 seconds and se 2 ft at 10 seconds. a chance of showers in the
morning. 
.sun night...sw winds 10 to 15 kt. seas 2 to 4 ft.
.mon through tue night...sw winds 15 to 20 kt. seas 2 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 210503
cwfbox
expires:202608211800;;087952

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 am edt fri aug 21 2026

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


anz236-211800-
narragansett bay-
103 am edt fri aug 21 2026

.rest of tonight...ne winds 5 to 10 kt. waves around 2 ft. rain.
.fri...ne winds 10 to 15 kt with gusts up to 20 kt. waves around
2 ft. rain.
.fri night...ne winds 10 to 15 kt. waves around 2 ft. rain
likely. patchy drizzle after midnight. 
.sat...ne winds 5 to 10 kt. waves around 2 ft. a chance of rain
or patchy drizzle in the morning, then showers likely in the
afternoon. 
.sat night...ne winds 5 to 10 kt. waves around 2 ft. showers.
.sun...s winds 5 to 10 kt. waves around 2 ft. a chance of showers
in the morning. 
.sun night...sw winds 5 to 10 kt. waves 2 to 3 ft.
.mon through tue night...sw winds 10 to 15 kt with gusts up to
20 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 210503
cwfbox
expires:202608211800;;087940

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 am edt fri aug 21 2026

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


anz250-211800-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
103 am edt fri aug 21 2026

.rest of tonight...n winds 10 to 15 kt with gusts up to 20 kt.
seas around 2 ft. wave detail: ne 2 ft at 8 seconds and nw 1 foot
at 3 seconds. a chance of rain or patchy drizzle. 
.fri...ne winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
3 ft. wave detail: ne 3 ft at 6 seconds and nw 2 ft at
10 seconds. a chance of rain or patchy drizzle. 
.fri night...ne winds 10 to 15 kt. gusts up to 20 kt after
midnight. seas around 2 ft. wave detail: n 2 ft at 5 seconds.
rain likely or patchy drizzle. 
.sat...e winds 10 to 15 kt. gusts up to 20 kt in the morning.
seas 2 to 3 ft. wave detail: e 3 ft at 6 seconds and s 2 ft at
7 seconds. rain likely or patchy drizzle in the morning, then
showers likely in the afternoon. 
.sat night...e winds 5 to 10 kt. seas 2 to 3 ft. wave detail: se
3 ft at 3 seconds and e 3 ft at 6 seconds. showers likely. 
.sun...se winds 5 to 10 kt. seas 2 to 3 ft. wave detail: e 2 ft
at 7 seconds and w 1 foot at 3 seconds. a chance of showers. 
.sun night...s winds 5 to 10 kt. seas 2 to 3 ft. 
.mon through tue night...sw winds 5 to 10 kt. seas 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 210503
cwfbox
expires:202608211800;;087943

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 am edt fri aug 21 2026

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


anz254-211800-
coastal waters from provincetown ma to chatham ma to nantucket ma
out 20 nm-
103 am edt fri aug 21 2026

.rest of tonight...ne winds 10 to 15 kt. seas around 2 ft. wave
detail: e 2 ft at 8 seconds and sw 1 foot at 3 seconds. a chance
of rain or patchy drizzle. 
.fri...ne winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
3 ft. wave detail: ne 3 ft at 6 seconds and sw 1 foot at
3 seconds. rain.
.fri night...e winds 10 to 15 kt with gusts up to 20 kt. seas
2 to 3 ft. wave detail: e 3 ft at 5 seconds and nw 1 foot at
4 seconds. rain. patchy drizzle after midnight. 
.sat...e winds 10 to 15 kt. gusts up to 20 kt in the morning.
seas 2 to 3 ft. wave detail: e 3 ft at 6 seconds and w 1 foot at
4 seconds. a chance of rain or patchy drizzle in the morning,
then showers likely in the afternoon. 
.sat night and sun...s winds 5 to 10 kt. seas 2 to 4 ft. wave
detail: se 3 ft at 6 seconds. showers. a chance of showers in the
afternoon. 
.sun night...s winds 5 to 10 kt. seas 2 to 4 ft. wave detail: sw
4 ft at 6 seconds and se 3 ft at 9 seconds. a chance of showers. 
.mon through tue night...sw winds 10 to 15 kt with gusts up to
20 kt. seas 2 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 210503
cwfbox
expires:202608211800;;087944

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 am edt fri aug 21 2026

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


anz255-211800-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
103 am edt fri aug 21 2026

.rest of tonight...e winds 10 to 15 kt. seas around 2 ft. wave
detail: e 2 ft at 8 seconds and sw 1 foot at 3 seconds. rain with
isolated tstms. 
.fri...ne winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
3 ft. wave detail: ne 3 ft at 6 seconds and sw 1 foot at
3 seconds. rain.
.fri night...e winds 10 to 15 kt. gusts up to 20 kt in the
evening. seas 2 to 3 ft. wave detail: e 3 ft at 5 seconds and sw
1 foot at 5 seconds. rain. patchy drizzle after midnight. 
.sat...e winds 5 to 10 kt. seas 2 to 3 ft. wave detail: e 3 ft at
6 seconds and sw 1 foot at 5 seconds. a chance of rain or patchy
drizzle in the morning. showers likely in the afternoon. 
.sat night and sun...s winds 5 to 10 kt. seas 2 to 4 ft. wave
detail: se 3 ft at 7 seconds. showers. a chance of showers in the
afternoon. 
.sun night...sw winds around 10 kt. seas 3 to 5 ft. wave detail:
s 5 ft at 7 seconds and se 1 foot at 12 seconds. a chance of
showers. 
.mon and mon night...w winds 10 to 15 kt with gusts up to 20 kt.
seas 3 to 5 ft. 
.tue and tue night...w winds 10 to 15 kt with gusts up to 20 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.

$$