fzus51 kbox 210504
cwfbox
expires:202603211800;;039680

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 am edt sat mar 21 2026

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


anz235-211800-
rhode island sound-
104 am edt sat mar 21 2026

...small craft advisory in effect until 5 am edt early this
morning...

.rest of tonight...sw winds 15 to 20 kt with gusts up to 30 kt.
seas 4 to 6 ft. wave detail: sw 6 ft at 7 seconds and se 2 ft at
9 seconds. showers.
.sat...w winds 10 to 15 kt, becoming nw in the afternoon. gusts
up to 20 kt. seas 3 to 5 ft. wave detail: sw 5 ft at 8 seconds
and se 3 ft at 8 seconds. 
.sat night...ne winds 5 to 10 kt, becoming se after midnight.
seas 2 to 4 ft. wave detail: sw 4 ft at 7 seconds and se 3 ft at
8 seconds. patchy fog after midnight with vsby 1 to 3 nm. 
.sun...s winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
3 ft. wave detail: s 3 ft at 5 seconds and se 2 ft at 8 seconds.
patchy fog in the morning. a chance of rain in the afternoon.
vsby 1 nm or less in the morning. 
.sun night and mon...n winds 15 to 20 kt. seas 3 to 5 ft. wave
detail: ne 5 ft at 6 seconds and s 4 ft at 6 seconds. rain likely
. 
.mon night...n winds 15 to 20 kt. seas 2 to 4 ft. wave detail: e
4 ft at 7 seconds and nw 3 ft at 3 seconds. 
.tue and tue night...nw winds 15 to 20 kt, becoming sw. gusts up
to 25 kt. seas 2 to 3 ft. 
.wed...sw winds 20 to 25 kt. seas around 3 ft. a chance of rain. 
.wed night...nw winds 20 to 25 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 210504
cwfbox
expires:202603211800;;039683

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 am edt sat mar 21 2026

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


anz236-211800-
narragansett bay-
104 am edt sat mar 21 2026

...small craft advisory in effect until 2 am edt early this
morning...

.rest of tonight...sw winds 10 to 15 kt with gusts up to 25 kt.
waves 2 to 4 ft. showers.
.sat...nw winds 5 to 10 kt with gusts up to 20 kt. waves 2 to
3 ft. 
.sat night...n winds 5 to 10 kt, becoming se after midnight.
waves 2 to 3 ft. 
.sun...s winds 10 to 15 kt with gusts up to 20 kt. waves 2 to
3 ft. a chance of rain in the afternoon. 
.sun night and mon...n winds 10 to 15 kt with gusts up to 20 kt.
waves 2 to 3 ft. rain likely . 
.mon night...n winds 10 to 15 kt. gusts up to 20 kt in the
evening. waves 2 to 3 ft. 
.tue and tue night...nw winds 10 to 15 kt, becoming sw with gusts
up to 20 kt. waves around 2 ft. 
.wed...sw winds 10 to 15 kt with gusts up to 20 kt. waves 2 to
3 ft. a chance of rain. 
.wed night...nw winds 10 to 15 kt with gusts up to 20 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 210504
cwfbox
expires:202603211800;;039681

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 am edt sat mar 21 2026

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


anz237-211800-
block island sound-
104 am edt sat mar 21 2026

...small craft advisory in effect until 5 am edt early this
morning...

.rest of tonight...sw winds 15 to 20 kt with gusts up to 30 kt.
seas 3 to 5 ft. wave detail: sw 5 ft at 7 seconds and se 4 ft at
8 seconds. showers likely. 
.sat...nw winds around 10 kt with gusts up to 20 kt. seas 3 to
5 ft. wave detail: sw 4 ft at 7 seconds and se 4 ft at 8 seconds.
.sat night...ne winds 5 to 10 kt, becoming se after midnight.
seas 2 to 4 ft. wave detail: sw 3 ft at 7 seconds and se 3 ft at
8 seconds. 
.sun...s winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
3 ft. wave detail: s 3 ft at 5 seconds and se 2 ft at 8 seconds. 
.sun night and mon...n winds 10 to 15 kt with gusts up to 20 kt.
seas 2 to 4 ft. wave detail: ne 4 ft at 6 seconds and sw 3 ft at
6 seconds. rain likely . 
.mon night...n winds 15 to 20 kt. seas 2 to 4 ft. wave detail: e
4 ft at 7 seconds and nw 2 ft at 4 seconds. 
.tue and tue night...nw winds 15 to 20 kt, becoming sw. seas 2 to
3 ft. 
.wed...sw winds 15 to 20 kt. seas 2 to 3 ft. a chance of rain. 
.wed night...nw winds 15 to 20 kt with gusts up to 25 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 210504
cwfbox
expires:202603211800;;039675

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 am edt sat mar 21 2026

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


anz255-211800-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
104 am edt sat mar 21 2026

...small craft advisory in effect through this evening...

.rest of tonight...sw winds 15 to 20 kt with gusts up to 30 kt.
seas 5 to 7 ft. wave detail: s 7 ft at 7 seconds and e 3 ft at
9 seconds. showers.
.sat...w winds 10 to 15 kt, becoming n in the afternoon. gusts up
to 25 kt. seas 5 to 7 ft. wave detail: sw 7 ft at 8 seconds and e
3 ft at 9 seconds. 
.sat night...ne winds 5 to 10 kt with gusts up to 20 kt, becoming
se after midnight. seas 3 to 5 ft. wave detail: sw 4 ft at
7 seconds and se 3 ft at 8 seconds. 
.sun...s winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. seas 2 to 4 ft. wave detail: s 4 ft at 7 seconds. 
.sun night...sw winds around 15 kt, becoming nw after midnight.
seas 3 to 5 ft. wave detail: sw 5 ft at 7 seconds and se 3 ft at
9 seconds. a chance of rain in the evening, then rain likely
after midnight.
.mon...n winds 15 to 20 kt with gusts up to 25 kt. seas 4 to
6 ft. wave detail: ne 6 ft at 8 seconds and nw 5 ft at 6 seconds.
rain likely, mainly in the morning. 
.mon night...n winds 20 to 25 kt. seas 5 to 7 ft. 
.tue...nw winds 20 to 25 kt. seas 4 to 6 ft. 
.tue night...sw winds 15 to 20 kt with gusts up to 25 kt. seas
3 to 5 ft. 
.wed and wed night...sw winds 20 to 25 kt, becoming nw. seas 3 to
4 ft. a chance of rain.  

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.

$$