fzus51 kbox 180805
cwfbox
expires:202509182100;;180151

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
405 am edt thu sep 18 2025

coastal waters from the merrimack river ma to watch hill ri out
to 25 nm


anz231-182100-
cape cod bay-
405 am edt thu sep 18 2025

.today...n winds 5 to 10 kt. seas around 2 ft. wave detail: se
2 ft at 7 seconds and ne 1 foot at 2 seconds. patchy fog. a
chance of showers with a slight chance of tstms this morning. 
.tonight...sw winds 5 to 10 kt, becoming w after midnight. seas
around 2 ft. wave detail: s 2 ft at 7 seconds and n 1 foot at
3 seconds. patchy fog in the evening. 
.fri...nw winds around 10 kt, becoming n in the afternoon. seas
around 2 ft. wave detail: se 2 ft at 7 seconds and n 1 foot at
3 seconds. 
.fri night...ne winds 10 to 15 kt, becoming n 15 to 20 kt after
midnight. gusts up to 25 kt. seas 2 to 4 ft. wave detail: n 3 ft
at 4 seconds and n 2 ft at 4 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
3 ft at 5 seconds and s 1 foot at 5 seconds. 
.sat night...se winds around 5 kt. seas around 2 ft. wave detail:
n 2 ft at 5 seconds and se 1 foot at 8 seconds. 
.sun through mon night...sw winds 10 to 15 kt with gusts up to
20 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 180805
cwfbox
expires:202509182100;;180155

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
405 am edt thu sep 18 2025

coastal waters from the merrimack river ma to watch hill ri out
to 25 nm


anz232-182100-
nantucket sound-
405 am edt thu sep 18 2025

.today...ne winds 5 to 10 kt, becoming nw this afternoon. seas
around 2 ft. wave detail: se 2 ft at 7 seconds and nw 1 foot at
2 seconds. patchy fog. a slight chance of showers this morning. 
.tonight...sw winds 5 to 10 kt, becoming w 10 to 15 kt after
midnight. seas around 2 ft. wave detail: w 1 foot at 2 seconds
and ne 1 foot at 5 seconds. patchy fog. vsby 1 to 3 nm after
midnight. 
.fri...nw winds around 10 kt, becoming n in the afternoon. seas
around 2 ft. wave detail: n 1 foot at 3 seconds and w 1 foot at
4 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 3 ft at 4 seconds
and nw 1 foot at 3 seconds. 
.sat...ne winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. seas 2 to 3 ft. wave detail: n 3 ft at 4 seconds and s
1 foot at 5 seconds. 
.sat night...e winds 5 to 10 kt. seas around 2 ft. wave detail:
ne 2 ft at 5 seconds and se 1 foot at 8 seconds. 
.sun through mon night...sw winds 10 to 15 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 180805
cwfbox
expires:202509182100;;180156

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
405 am edt thu sep 18 2025

coastal waters from the merrimack river ma to watch hill ri out
to 25 nm


anz233-182100-
vineyard sound-
405 am edt thu sep 18 2025

.today...n winds 5 to 10 kt, becoming nw this afternoon. seas
around 2 ft. wave detail: s 2 ft at 7 seconds and ne 1 foot at
2 seconds. patchy fog this morning. a slight chance of showers
this morning. 
.tonight...w winds 5 to 10 kt. seas around 2 ft. wave detail: sw
2 ft at 3 seconds and se 2 ft at 7 seconds. 
.fri...nw winds around 10 kt, becoming w in the afternoon. seas
around 2 ft. wave detail: n 1 foot at 3 seconds and w 1 foot at
4 seconds. 
.fri night...e winds 5 to 10 kt, becoming ne 10 to 15 kt with
gusts up to 20 kt after midnight. seas 2 to 3 ft. wave detail: n
2 ft at 3 seconds and sw 1 foot at 5 seconds. 
.sat and sat night...e winds 10 to 15 kt with gusts up to 20 kt.
seas 2 to 3 ft. wave detail: n 2 ft at 4 seconds and s 1 foot at
5 seconds. 
.sun through mon night...sw winds 10 to 15 kt. seas around 2 ft.
wave detail: sw 2 ft at 4 seconds and se 2 ft at 10 seconds.  

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 180805
cwfbox
expires:202509182100;;180157

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
405 am edt thu sep 18 2025

coastal waters from the merrimack river ma to watch hill ri out
to 25 nm


anz234-182100-
buzzards bay-
405 am edt thu sep 18 2025

.today...n winds 5 to 10 kt, becoming w this afternoon. seas
around 2 ft. wave detail: s 2 ft at 7 seconds and ne 1 foot at
2 seconds. patchy fog this morning. a slight chance of showers
this morning. 
.tonight...w winds 5 to 10 kt. seas around 2 ft. wave detail: s
2 ft at 6 seconds and w 1 foot at 2 seconds. 
.fri...nw winds around 10 kt. seas around 2 ft. wave detail: w
1 foot at 3 seconds and n 1 foot at 3 seconds. 
.fri night...ne winds 5 to 10 kt, increasing to 10 to 15 kt with
gusts up to 20 kt after midnight. seas around 2 ft. wave detail:
n 2 ft at 3 seconds and sw 1 foot at 4 seconds. 
.sat and sat night...e winds 10 to 15 kt with gusts up to 20 kt.
seas around 2 ft. wave detail: n 2 ft at 4 seconds and s 1 foot
at 5 seconds. 
.sun through mon night...sw winds 10 to 15 kt with gusts up to
20 kt. seas around 2 ft. wave detail: sw 2 ft at 3 seconds and se
2 ft at 10 seconds. 

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 180805
cwfbox
expires:202509182100;;180158

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
405 am edt thu sep 18 2025

coastal waters from the merrimack river ma to watch hill ri out
to 25 nm


anz235-182100-
rhode island sound-
405 am edt thu sep 18 2025

.today...n winds around 10 kt, becoming w this afternoon. seas
2 to 3 ft. wave detail: se 3 ft at 8 seconds and ne 1 foot at
3 seconds. patchy fog this morning. a slight chance of showers
this morning. 
.tonight...w winds 10 to 15 kt. seas 2 to 3 ft. wave detail: s
3 ft at 7 seconds and w 2 ft at 3 seconds. 
.fri...nw winds around 10 kt, becoming w in the afternoon. seas
2 to 3 ft. wave detail: s 3 ft at 7 seconds and w 1 foot at
3 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 3 ft at 3 seconds
and s 2 ft at 7 seconds. 
.sat and sat night...e winds 15 to 20 kt. seas 2 to 3 ft. wave
detail: ne 3 ft at 4 seconds and se 2 ft at 8 seconds. 
.sun through mon night...sw winds 10 to 15 kt. seas 2 to 3 ft.
wave detail: se 3 ft at 12 seconds and se 2 ft at 4 seconds.  

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 180805
cwfbox
expires:202509182100;;180161

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
405 am edt thu sep 18 2025

coastal waters from the merrimack river ma to watch hill ri out
to 25 nm


anz236-182100-
narragansett bay-
405 am edt thu sep 18 2025

.today...n winds 5 to 10 kt, becoming w this afternoon. waves
around 2 ft. patchy fog this morning. 
.tonight...sw winds 5 to 10 kt, becoming w after midnight. waves
around 2 ft. 
.fri...nw winds 5 to 10 kt. waves around 2 ft. 
.fri night...n winds 5 to 10 kt, increasing to 10 to 15 kt after
midnight. waves around 2 ft. 
.sat and sat night...e winds 10 to 15 kt. waves around 2 ft. 
.sun through mon night...sw winds 5 to 10 kt. waves 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 180805
cwfbox
expires:202509182100;;180149

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
405 am edt thu sep 18 2025

coastal waters from the merrimack river ma to watch hill ri out
to 25 nm


anz250-182100-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
405 am edt thu sep 18 2025

.today...n winds 5 to 10 kt. seas 2 to 3 ft. wave detail: se 3 ft
at 8 seconds. patchy fog. a chance of showers with a slight
chance of tstms this morning with vsby 1 nm or less. 
.tonight...s winds 5 to 10 kt, becoming w after midnight. seas
2 to 3 ft. wave detail: se 3 ft at 7 seconds and sw 2 ft at
3 seconds. patchy fog in the evening with vsby 1 nm or less. 
.fri...nw winds 10 to 15 kt, becoming n 5 to 10 kt in the
afternoon. seas 2 to 3 ft. wave detail: se 3 ft at 7 seconds and
w 2 ft at 3 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 4 ft. wave detail: n 4 ft
at 4 seconds and se 2 ft at 7 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: n
4 ft at 5 seconds and se 2 ft at 8 seconds. 
.sat night...se winds 5 to 10 kt, becoming sw after midnight.
seas 2 to 3 ft. wave detail: n 2 ft at 5 seconds and se 1 foot at
8 seconds. 
.sun through mon night...sw winds 10 to 15 kt with gusts up to
20 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 180805
cwfbox
expires:202509182100;;180152

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
405 am edt thu sep 18 2025

coastal waters from the merrimack river ma to watch hill ri out
to 25 nm


anz254-182100-
coastal waters from provincetown ma to chatham ma to nantucket ma
out 20 nm-
405 am edt thu sep 18 2025

.today...e winds 5 to 10 kt, becoming nw this afternoon. seas
2 to 3 ft. wave detail: s 3 ft at 7 seconds. patchy fog. a slight
chance of showers. a slight chance of tstms this morning. 
.tonight...w winds 5 to 10 kt. seas 2 to 3 ft. wave detail: s
3 ft at 7 seconds. patchy fog. vsby 1 to 3 nm, decreasing to 1 nm
or less after midnight. 
.fri...nw winds around 10 kt, becoming n in the afternoon. seas
2 to 3 ft. wave detail: se 3 ft at 7 seconds and w 2 ft at
4 seconds. 
.fri night...ne winds 5 to 10 kt, becoming n 15 to 20 kt after
midnight. gusts up to 25 kt. seas 2 to 4 ft. wave detail: n 3 ft
at 4 seconds and se 2 ft at 7 seconds. 
.sat...ne winds 10 to 15 kt. gusts up to 20 kt in the morning.
seas 2 to 4 ft. wave detail: ne 3 ft at 5 seconds and n 2 ft 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 se 1 foot at 15 seconds. 
.sun through mon 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 180805
cwfbox
expires:202509182100;;180153

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
405 am edt thu sep 18 2025

coastal waters from the merrimack river ma to watch hill ri out
to 25 nm


anz255-182100-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
405 am edt thu sep 18 2025

.today...w winds 5 to 10 kt. seas 2 to 4 ft. wave detail: s 3 ft
at 7 seconds. patchy fog. a slight chance of showers this
morning. 
.tonight...w winds 5 to 10 kt, increasing to 10 to 15 kt after
midnight. seas 2 to 3 ft. wave detail: s 3 ft at 7 seconds and w
2 ft at 4 seconds. patchy fog. vsby 1 nm or less after midnight. 
.fri...nw winds around 10 kt. seas 2 to 3 ft. wave detail: s 3 ft
at 7 seconds and w 2 ft at 4 seconds. 
.fri night...ne winds 5 to 10 kt, increasing to 15 to 20 kt after
midnight. seas 2 to 4 ft. wave detail: ne 3 ft at 4 seconds and s
2 ft at 7 seconds. 
.sat and sat night...e winds 15 to 20 kt. seas 2 to 4 ft. wave
detail: n 3 ft at 4 seconds and se 2 ft at 8 seconds. 
.sun through mon night...sw winds 10 to 15 kt. seas 2 to 4 ft.
wave detail: se 4 ft at 12 seconds and sw 2 ft at 3 seconds.  

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.

$$