fzus51 kbox 182005
cwfbox
expires:202509190900;;208488

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

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


anz231-190900-
cape cod bay-
404 pm edt thu sep 18 2025

.tonight...s winds 5 to 10 kt, becoming w after midnight. seas
around 2 ft. wave detail: se 2 ft at 7 seconds and n 1 foot at
3 seconds. patchy fog after midnight with vsby 1 to 3 nm. 
.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 with
gusts up to 25 kt after midnight. 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 through sun night...s winds 5 to 10 kt. seas around
2 ft. wave detail: n 2 ft at 5 seconds and se 2 ft at 12 seconds.
.mon through tue night...sw winds 10 to 15 kt with gusts up to
20 kt. seas 2 to 3 ft. wave detail: se 3 ft at 10 seconds and se
3 ft at 13 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 182005
cwfbox
expires:202509190900;;208492

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

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


anz232-190900-
nantucket sound-
404 pm edt thu sep 18 2025

.tonight...sw winds 10 to 15 kt. gusts up to 20 kt after
midnight. seas around 2 ft. wave detail: sw 2 ft at 4 seconds and
w 1 foot at 2 seconds. patchy fog. vsby 1 to 3 nm. 
.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...e winds 5 to 10 kt, becoming ne 15 to 20 kt after
midnight. seas 2 to 3 ft. wave detail: ne 2 ft at 3 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 through sun night...se winds 10 to 15 kt. seas around
2 ft. wave detail: ne 2 ft at 5 seconds and se 1 foot at
8 seconds. 
.mon through tue night...sw winds 15 to 20 kt. seas 2 to 3 ft.
wave detail: sw 3 ft at 4 seconds and se 3 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 182005
cwfbox
expires:202509190900;;208493

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

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


anz233-190900-
vineyard sound-
404 pm edt thu sep 18 2025

.tonight...w winds 5 to 10 kt. seas around 2 ft. wave detail: sw
2 ft at 4 seconds and se 2 ft at 7 seconds. 
.fri...nw winds around 10 kt, becoming sw in the afternoon. seas
around 2 ft. wave detail: w 2 ft at 4 seconds and ne 1 foot at
3 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...ne winds 10 to 15 kt. gusts up to 20 kt in the morning.
seas 2 to 3 ft. wave detail: n 2 ft at 4 seconds and s 1 foot at
5 seconds. 
.sat night through sun night...se winds 5 to 10 kt. seas around
2 ft. wave detail: se 2 ft at 4 seconds and n 1 foot at
4 seconds. 
.mon through tue night...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
3 ft at 11 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 182005
cwfbox
expires:202509190900;;208494

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

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


anz234-190900-
buzzards bay-
404 pm edt thu sep 18 2025

.tonight...w winds 5 to 10 kt. seas around 2 ft. wave detail: se
2 ft at 7 seconds and sw 1 foot at 4 seconds. 
.fri...nw winds around 10 kt, becoming w in the afternoon. seas
around 2 ft. wave detail: n 1 foot at 2 seconds and w 1 foot at
3 seconds. 
.fri night...e winds 5 to 10 kt, becoming n 10 to 15 kt with
gusts up to 20 kt after midnight. seas 1 foot or less, then
around 2 ft after midnight. wave detail: n 1 foot at 3 seconds
and sw 1 foot at 5 seconds, becoming n 2 ft at 4 seconds and sw
1 foot at 5 seconds. 
.sat...ne winds 10 to 15 kt. gusts up to 20 kt in the morning.
seas around 2 ft. wave detail: n 2 ft at 4 seconds and s 1 foot
at 5 seconds. 
.sat night through sun night...se winds 5 to 10 kt. seas around
2 ft. wave detail: se 2 ft at 3 seconds and n 1 foot at
5 seconds. 
.mon and mon night...s winds 10 to 15 kt, becoming sw. seas
around 2 ft. wave detail: se 2 ft at 10 seconds and se 2 ft at
11 seconds. 
.tue and tue night...sw winds 10 to 15 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 182005
cwfbox
expires:202509190900;;208495

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

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


anz235-190900-
rhode island sound-
404 pm edt thu sep 18 2025

.tonight...w winds 10 to 15 kt. seas 2 to 3 ft. wave detail: s
3 ft at 7 seconds and w 1 foot at 3 seconds. 
.fri...nw winds around 10 kt, becoming sw in the afternoon. seas
2 to 3 ft. wave detail: w 2 ft at 4 seconds and se 2 ft at
7 seconds. 
.fri night...n winds 10 to 15 kt, becoming ne 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...ne winds 15 to 20 kt, becoming e 10 to 15 kt in the
afternoon. seas 2 to 3 ft. wave detail: ne 3 ft at 4 seconds and
se 2 ft at 8 seconds. 
.sat night through sun night...se winds 10 to 15 kt. seas 2 to
3 ft. wave detail: se 2 ft at 5 seconds and se 2 ft at
13 seconds. 
.mon through tue night...sw winds 10 to 15 kt with gusts up to
20 kt. seas 2 to 4 ft. wave detail: se 4 ft at 11 seconds and sw
3 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 182005
cwfbox
expires:202509190900;;208498

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

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


anz236-190900-
narragansett bay-
404 pm edt thu sep 18 2025

.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 with
gusts up to 20 kt after midnight. waves around 2 ft. 
.sat...ne winds 10 to 15 kt, becoming e 5 to 10 kt in the
afternoon. waves around 2 ft. 
.sat night through sun night...se winds 5 to 10 kt. waves around
2 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 182005
cwfbox
expires:202509190900;;208486

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

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


anz250-190900-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
404 pm edt thu sep 18 2025

.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. vsby 1 to 3 nm, decreasing to 1 nm or less
after midnight. 
.fri...nw 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: 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
3 ft at 5 seconds and se 2 ft at 8 seconds. 
.sat night through sun night...s winds 10 to 15 kt with gusts up
to 20 kt. seas 2 to 4 ft. wave detail: se 3 ft at 12 seconds and
se 2 ft at 3 seconds.
.mon...s winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
4 ft. wave detail: se 3 ft at 11 seconds and se 2 ft at
4 seconds. 
.mon night through tue night...w winds 10 to 15 kt with gusts up
to 20 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 182005
cwfbox
expires:202509190900;;208489

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

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


anz254-190900-
coastal waters from provincetown ma to chatham ma to nantucket ma
out 20 nm-
404 pm edt thu sep 18 2025

.tonight...sw winds 5 to 10 kt, becoming w 10 to 15 kt after
midnight. seas 2 to 3 ft. wave detail: se 3 ft at 7 seconds and
sw 2 ft at 4 seconds. patchy fog. vsby 1 nm or less. 
.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 n 2 ft at
3 seconds. patchy fog in the morning with vsby 1 nm or less. 
.fri night...ne winds 5 to 10 kt, becoming n 15 to 20 kt with
gusts up to 25 kt after midnight. 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 with gusts up to 20 kt, diminishing
to 5 to 10 kt in the afternoon. seas 2 to 4 ft. wave detail: ne
3 ft at 5 seconds and n 2 ft at 5 seconds. 
.sat night through sun night...se winds 5 to 10 kt. seas 2 to
4 ft. wave detail: se 3 ft at 12 seconds and n 2 ft at 6 seconds.
.mon through tue night...sw winds 10 to 15 kt with gusts up to
20 kt. seas 3 to 5 ft. wave detail: se 4 ft at 11 seconds and sw
3 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 182005
cwfbox
expires:202509190900;;208490

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

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


anz255-190900-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
404 pm edt thu sep 18 2025

.tonight...w winds 5 to 10 kt, increasing to 10 to 15 kt with
gusts up to 20 kt after midnight. seas 2 to 3 ft. wave detail: se
3 ft at 7 seconds and w 2 ft at 4 seconds. patchy fog. vsby 1 nm
or less. 
.fri...nw winds 5 to 10 kt. seas 2 to 3 ft. wave detail: se 3 ft
at 7 seconds and w 2 ft at 5 seconds. patchy fog in the morning
with vsby 1 nm or less. 
.fri night...e winds 5 to 10 kt, becoming ne 15 to 20 kt after
midnight. seas 2 to 4 ft. wave detail: n 3 ft at 4 seconds and sw
2 ft at 6 seconds. 
.sat...ne winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. seas 2 to 4 ft. wave detail: n 3 ft at 4 seconds and
se 2 ft at 8 seconds. 
.sat night through sun night...e winds 10 to 15 kt. seas 2 to
4 ft. wave detail: e 3 ft at 4 seconds and se 3 ft at 12 seconds.
.mon through tue night...sw winds 10 to 15 kt with gusts up to
20 kt. seas 3 to 5 ft. wave detail: se 4 ft at 11 seconds and sw
3 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.

$$