fzus51 kbox 122006
cwfbox
expires:202603130900;;562109

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
406 pm edt thu mar 12 2026

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


anz235-130900-
rhode island sound-
406 pm edt thu mar 12 2026

...small craft advisory in effect through friday morning...

.tonight...nw winds 20 to 25 kt. seas 3 to 5 ft. wave detail: s
5 ft at 9 seconds and nw 3 ft at 4 seconds. patchy fog this
evening. snow, rain and sleet this evening with vsby 1 nm or
less. 
.fri...w winds 15 to 20 kt, becoming sw 10 to 15 kt in the
afternoon. seas 2 to 4 ft. wave detail: s 4 ft at 9 seconds and w
3 ft at 4 seconds. 
.fri night...s winds 20 to 25 kt, becoming sw 25 to 30 kt after
midnight. seas 4 to 6 ft, building to 5 to 8 ft after midnight.
wave detail: s 6 ft at 9 seconds and s 4 ft at 5 seconds,
becoming s 8 ft at 9 seconds and sw 2 ft at 5 seconds. 
.sat...w winds 25 to 30 kt with gusts up to 35 kt. seas 6 to
8 ft. wave detail: s 8 ft at 10 seconds and w 3 ft at 5 seconds. 
.sat night...w winds 15 to 20 kt with gusts up to 30 kt, becoming
nw 10 to 15 kt with gusts up to 20 kt after midnight. seas 5 to
7 ft, subsiding to 3 to 5 ft after midnight. wave detail: sw 7 ft
at 9 seconds and w 3 ft at 5 seconds, becoming sw 4 ft at
8 seconds and nw 2 ft at 4 seconds. 
.sun...n winds 5 to 10 kt, becoming e 10 to 15 kt with gusts up
to 20 kt in the afternoon. seas 2 to 3 ft. wave detail: sw 3 ft
at 8 seconds and e 2 ft at 3 seconds. 
.sun night...se winds 20 to 25 kt, increasing to 25 to 30 kt with
gusts up to 35 kt after midnight. seas 2 to 4 ft, building to
4 to 6 ft after midnight. a chance of rain after midnight. 
.mon...s winds 25 to 35 kt with gusts up to 45 kt. seas 7 to
10 ft. rain.
.mon night...s winds 30 to 40 kt with gusts up to 45 kt. seas
9 to 12 ft. rain.
.tue...sw winds 25 to 30 kt. seas 8 to 11 ft. a chance of rain. 
.tue night...w 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 122006
cwfbox
expires:202603130900;;562112

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
406 pm edt thu mar 12 2026

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


anz236-130900-
narragansett bay-
406 pm edt thu mar 12 2026

.tonight...nw winds 15 to 20 kt, diminishing to 10 to 15 kt after
midnight. waves 2 to 3 ft. patchy fog this evening. snow, rain
and sleet this evening with vsby 1 nm or less. 
.fri...w winds 5 to 10 kt, becoming sw 15 to 20 kt in the
afternoon. waves 2 to 3 ft. 
.fri night...s winds 15 to 20 kt, becoming sw 20 to 25 kt after
midnight. gusts up to 30 kt. waves 4 to 6 ft. 
.sat...w winds 20 to 25 kt with gusts up to 35 kt. waves 4 to
6 ft. 
.sat night...w winds 15 to 20 kt with gusts up to 30 kt, becoming
nw 5 to 10 kt with gusts up to 20 kt after midnight. waves 2 to
3 ft. at the bay entrance, waves 4 to 6 ft, subsiding to 2 to
4 ft after midnight. 
.sun...n winds around 5 kt, becoming se with gusts up to 20 kt in
the afternoon. waves around 2 ft. 
.sun night...se winds 10 to 15 kt, increasing to 20 to 25 kt
after midnight. gusts up to 30 kt. waves 2 to 3 ft, building to
3 to 5 ft after midnight. rain likely after midnight. 
.mon and mon night...s winds 25 to 30 kt with gusts up to 40 kt.
waves 5 to 8 ft. at the bay entrance, waves 6 to 9 ft, building
to 8 to 11 ft. rain.
.tue...sw winds 15 to 20 kt with gusts up to 25 kt. waves 5 to
7 ft, except 7 to 10 ft at the bay entrance. a chance of rain. 
.tue night...w winds 15 to 20 kt with gusts up to 25 kt. waves
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 122006
cwfbox
expires:202603130900;;562110

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
406 pm edt thu mar 12 2026

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


anz237-130900-
block island sound-
406 pm edt thu mar 12 2026

...small craft advisory in effect through friday morning...

.tonight...nw winds 15 to 20 kt with gusts up to 25 kt. seas 3 to
5 ft. wave detail: s 5 ft at 8 seconds and w 3 ft at 4 seconds.
patchy fog this evening. snow this evening with vsby 1 nm or
less. 
.fri...w winds 10 to 15 kt, becoming sw 15 to 20 kt in the
afternoon. seas 2 to 4 ft. wave detail: sw 3 ft at 4 seconds and
s 3 ft at 9 seconds. 
.fri night...s winds 15 to 20 kt, becoming sw 20 to 25 kt after
midnight. gusts up to 30 kt. seas 5 to 7 ft. wave detail: s 7 ft
at 9 seconds and s 3 ft at 4 seconds. 
.sat...w winds 20 to 25 kt with gusts up to 35 kt. seas 5 to
8 ft. wave detail: s 7 ft at 10 seconds and w 5 ft at 5 seconds. 
.sat night...nw winds 15 to 20 kt with gusts up to 30 kt,
diminishing to 10 to 15 kt with gusts up to 20 kt after midnight.
seas 3 to 5 ft. wave detail: s 4 ft at 9 seconds and w 3 ft at
5 seconds. 
.sun...ne winds 5 to 10 kt, becoming e 10 to 15 kt with gusts up
to 20 kt in the afternoon. seas 2 to 3 ft. wave detail: e 2 ft at
3 seconds and s 2 ft at 8 seconds. 
.sun night...se winds 15 to 20 kt, increasing to 20 to 25 kt
after midnight. gusts up to 30 kt. seas 2 to 4 ft, building to
4 to 6 ft after midnight. rain likely after midnight. 
.mon...s winds 25 to 30 kt with gusts up to 45 kt. seas 7 to
10 ft. rain.
.mon night...s winds 25 to 30 kt with gusts up to 45 kt. seas
9 to 12 ft. rain.
.tue...w winds 20 to 25 kt with gusts up to 30 kt. seas 7 to
10 ft. a chance of rain. 
.tue night...w winds 20 to 25 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 122006
cwfbox
expires:202603130900;;562104

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
406 pm edt thu mar 12 2026

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


anz255-130900-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
406 pm edt thu mar 12 2026

...small craft advisory in effect through friday afternoon...

.tonight...nw winds 20 to 25 kt with gusts up to 30 kt. seas 5 to
7 ft. wave detail: w 7 ft at 7 seconds and se 4 ft at 9 seconds.
snow. rain and sleet this evening. patchy fog this evening with
vsby 1 nm or less. 
.fri...w winds 15 to 20 kt, becoming sw 10 to 15 kt in the
afternoon. gusts up to 25 kt. seas 4 to 6 ft. wave detail: w 5 ft
at 6 seconds and s 4 ft at 9 seconds. 
.fri night...s winds 20 to 25 kt, becoming sw 25 to 30 kt after
midnight. seas 4 to 6 ft, building to 6 to 9 ft after midnight.
wave detail: s 6 ft at 9 seconds and sw 4 ft at 5 seconds,
becoming sw 9 ft at 9 seconds and sw 2 ft at 4 seconds. 
.sat...w winds 25 to 30 kt with gusts up to 40 kt. seas 8 to
11 ft. wave detail: sw 11 ft at 10 seconds and s 3 ft at
10 seconds. 
.sat night...w winds 20 to 25 kt with gusts up to 35 kt, becoming
nw 15 to 20 kt with gusts up to 25 kt after midnight. seas 6 to
9 ft, subsiding to 4 to 6 ft after midnight. wave detail: sw 9 ft
at 10 seconds and w 2 ft at 5 seconds, becoming sw 6 ft at
9 seconds and nw 2 ft at 4 seconds. 
.sun...n winds 5 to 10 kt, becoming e 10 to 15 kt with gusts up
to 20 kt in the afternoon. seas 3 to 5 ft, subsiding to 2 to 3 ft
in the afternoon. wave detail: sw 4 ft at 8 seconds and n 1 foot
at 4 seconds, becoming sw 3 ft at 7 seconds and n 2 ft at
4 seconds. 
.sun night...se winds 20 to 25 kt, increasing to 25 to 30 kt with
gusts up to 35 kt after midnight. seas 2 to 4 ft, building to
4 to 6 ft after midnight. a chance of rain after midnight. 
.mon...se winds 25 to 35 kt with gusts up to 45 kt. seas 7 to
10 ft. rain.
.mon night...s winds 30 to 40 kt with gusts up to 45 kt. seas
10 to 14 ft. rain.
.tue...sw winds 25 to 30 kt. seas 9 to 13 ft. rain likely. 
.tue night...w winds 25 to 30 kt. seas 7 to 10 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.

$$