fzus51 kbox 120807
cwfbox
expires:202603122100;;064335

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

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


anz231-122100-
cape cod bay-
406 am edt thu mar 12 2026

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

.today...sw winds around 15 kt, becoming nw this afternoon. gusts
up to 25 kt. seas 3 to 4 ft. wave detail: s 3 ft at 5 seconds and
nw 2 ft at 4 seconds. a chance of rain this morning, then rain
this afternoon. 
.tonight...nw winds 15 to 20 kt with gusts up to 25 kt. seas 2 to
3 ft. wave detail: nw 3 ft at 4 seconds and se 2 ft at 7 seconds.
snow likely in the evening. 
.fri...w winds 10 to 15 kt, becoming sw in the afternoon. gusts
up to 20 kt. seas 2 to 3 ft. wave detail: n 3 ft at 6 seconds and
sw 2 ft at 7 seconds. 
.fri night...s winds 15 to 20 kt with gusts up to 25 kt. seas
3 to 4 ft. wave detail: s 3 ft at 4 seconds and se 2 ft at
10 seconds. 
.sat and sat night...nw winds 15 to 20 kt with gusts up to 30 kt.
seas 2 to 4 ft. wave detail: sw 3 ft at 5 seconds and s 2 ft at
9 seconds. 
.sun...ne winds 5 to 10 kt. seas around 2 ft. wave detail: n 2 ft
at 5 seconds and s 1 foot at 7 seconds. 
.sun night...se winds 25 to 30 kt. seas 2 to 4 ft. a chance of
rain. 
.mon and mon night...s winds 25 to 35 kt with gusts up to 40 kt.
seas 5 to 7 ft. 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.

$$

fzus51 kbox 120807
cwfbox
expires:202603122100;;064339

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

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


anz232-122100-
nantucket sound-
406 am edt thu mar 12 2026

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

.today...sw winds 10 to 15 kt, becoming nw this afternoon. gusts
up to 30 kt. seas 4 to 6 ft. wave detail: s 4 ft at 7 seconds and
w 2 ft at 3 seconds. a chance of rain with a slight chance of
tstms this morning, then rain this afternoon. 
.tonight...nw winds 15 to 20 kt with gusts up to 25 kt. seas 2 to
4 ft. wave detail: nw 3 ft at 4 seconds and sw 2 ft at 8 seconds.
rain likely with a chance of snow in the evening. 
.fri...w winds 10 to 15 kt, becoming sw in the afternoon. gusts
up to 20 kt. seas 2 to 4 ft. wave detail: nw 2 ft at 5 seconds
and sw 2 ft at 7 seconds. 
.fri night...s winds 15 to 20 kt, becoming sw 20 to 25 kt after
midnight. gusts up to 30 kt. seas 2 to 4 ft, building to 4 to
6 ft after midnight. wave detail: sw 3 ft at 4 seconds and n
1 foot at 6 seconds, becoming sw 5 ft at 5 seconds and se 3 ft at
10 seconds. 
.sat...sw winds 25 to 30 kt, becoming w 20 to 25 kt in the
afternoon. seas 4 to 6 ft. wave detail: sw 4 ft at 6 seconds and
s 3 ft at 10 seconds. 
.sat night...w winds 15 to 20 kt with gusts up to 30 kt, becoming
nw 10 to 15 kt after midnight. seas 3 to 5 ft. wave detail: w
3 ft at 4 seconds and sw 3 ft at 9 seconds. 
.sun...ne winds 10 to 15 kt. seas around 2 ft. 
.sun night...se winds 25 to 30 kt. seas 3 to 5 ft. a chance of
rain. 
.mon and mon night...s winds 25 to 35 kt, increasing to 30 to
40 kt. seas 5 to 8 ft. rain. 

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 120807
cwfbox
expires:202603122100;;064340

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

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


anz233-122100-
vineyard sound-
406 am edt thu mar 12 2026

...small craft advisory in effect through late tonight...

.today...sw winds around 15 kt, becoming nw this afternoon. gusts
up to 25 kt. seas 5 to 7 ft. wave detail: sw 5 ft at 7 seconds
and se 2 ft at 8 seconds. rain.
.tonight...nw winds 15 to 20 kt with gusts up to 25 kt. seas 3 to
5 ft. wave detail: sw 3 ft at 7 seconds and s 3 ft at 8 seconds.
snow likely in the evening. 
.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 8 seconds and
s 3 ft at 9 seconds. 
.fri night...s winds 20 to 25 kt, becoming sw 25 to 30 kt after
midnight. seas 3 to 5 ft, building to 5 to 7 ft after midnight.
wave detail: sw 4 ft at 5 seconds and s 2 ft at 9 seconds,
becoming sw 7 ft at 7 seconds and s 7 ft at 10 seconds. 
.sat...w winds 25 to 30 kt with gusts up to 35 kt. seas 5 to
8 ft. wave detail: sw 7 ft at 8 seconds and w 2 ft at 4 seconds. 
.sat night...w winds 15 to 20 kt with gusts up to 25 kt, becoming
nw 10 to 15 kt after midnight. seas 4 to 6 ft, subsiding to 2 to
4 ft after midnight. wave detail: sw 6 ft at 9 seconds and w 2 ft
at 5 seconds, becoming sw 4 ft at 8 seconds and nw 1 foot at
4 seconds. 
.sun...e winds 10 to 15 kt. seas 2 to 3 ft. 
.sun night...se winds 25 to 30 kt with gusts up to 35 kt. seas
3 to 5 ft. rain likely. 
.mon and mon night...s winds 25 to 35 kt, becoming sw 30 to
40 kt. seas 6 to 9 ft. 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.

$$

fzus51 kbox 120807
cwfbox
expires:202603122100;;064341

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

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


anz234-122100-
buzzards bay-
406 am edt thu mar 12 2026

...small craft advisory in effect through late tonight...

.today...sw winds 10 to 15 kt, becoming nw this afternoon. gusts
up to 25 kt. seas 3 to 5 ft. wave detail: sw 4 ft at 7 seconds
and w 1 foot at 4 seconds. rain. snow this afternoon. 
.tonight...nw winds 10 to 15 kt with gusts up to 25 kt. seas 2 to
4 ft. wave detail: sw 3 ft at 7 seconds and nw 2 ft at 3 seconds.
snow likely in the evening. 
.fri...w winds around 10 kt, becoming sw 15 to 20 kt in the
afternoon. seas 2 to 3 ft. wave detail: sw 3 ft at 7 seconds and
nw 2 ft at 5 seconds. 
.fri night...sw winds 20 to 25 kt with gusts up to 30 kt. seas
3 to 4 ft, building to 4 to 6 ft after midnight. wave detail: w
4 ft at 5 seconds and s 2 ft at 9 seconds, becoming sw 6 ft at
7 seconds and s 5 ft at 10 seconds. 
.sat...w winds 25 to 30 kt, diminishing to 20 to 25 kt in the
afternoon. seas 4 to 6 ft. wave detail: sw 6 ft at 8 seconds and
w 3 ft at 4 seconds. 
.sat night...w winds 15 to 20 kt with gusts up to 25 kt, becoming
nw 10 to 15 kt after midnight. seas 3 to 5 ft, subsiding to 2 to
3 ft after midnight. wave detail: sw 5 ft at 9 seconds and w 2 ft
at 4 seconds, becoming sw 3 ft at 8 seconds and nw 2 ft at
4 seconds. 
.sun...e winds 10 to 15 kt. seas around 2 ft. 
.sun night...se winds 25 to 30 kt with gusts up to 35 kt. seas
3 to 5 ft. rain likely. 
.mon and mon night...s winds 25 to 35 kt, becoming sw 30 to
40 kt. seas 5 to 8 ft. 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.

$$

fzus51 kbox 120807
cwfbox
expires:202603122100;;064342

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

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


anz235-122100-
rhode island sound-
406 am edt thu mar 12 2026

...small craft advisory in effect through late tonight...

.today...sw winds around 15 kt, becoming nw this afternoon. gusts
up to 25 kt. seas 5 to 8 ft. wave detail: s 7 ft at 7 seconds and
se 2 ft at 8 seconds. rain. snow this afternoon. 
.tonight...nw winds 15 to 20 kt with gusts up to 25 kt. seas 4 to
6 ft. wave detail: s 5 ft at 9 seconds and w 3 ft at 4 seconds.
snow likely in the evening. 
.fri...w winds 10 to 15 kt, becoming sw 15 to 20 kt in the
afternoon. seas 3 to 5 ft. wave detail: s 4 ft at 9 seconds and
sw 3 ft at 8 seconds. 
.fri night...sw winds 20 to 25 kt with gusts up to 30 kt. seas
4 to 6 ft, building to 6 to 9 ft after midnight. wave detail: sw
5 ft at 6 seconds and s 3 ft at 9 seconds, becoming s 9 ft at
9 seconds and w 2 ft at 5 seconds. 
.sat...w winds 25 to 30 kt with gusts up to 35 kt. seas 6 to
9 ft. wave detail: sw 9 ft at 8 seconds and w 3 ft at 5 seconds. 
.sat night...w winds 15 to 20 kt with gusts up to 25 kt, becoming
nw 10 to 15 kt after midnight. seas 4 to 6 ft, subsiding to 2 to
4 ft after midnight. wave detail: sw 6 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...e winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
3 ft. 
.sun night...se winds 25 to 30 kt with gusts up to 35 kt. seas
4 to 6 ft. rain likely. 
.mon...s winds 30 to 35 kt with gusts up to 40 kt. seas 7 to
10 ft. rain.
.mon night...sw winds 30 to 40 kt with gusts up to 45 kt. seas
9 to 12 ft. 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.

$$

fzus51 kbox 120807
cwfbox
expires:202603122100;;064345

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

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


anz236-122100-
narragansett bay-
406 am edt thu mar 12 2026

...small craft advisory in effect from 8 am edt this morning
through this evening...

.today...sw winds 10 to 15 kt, becoming nw this afternoon. gusts
up to 25 kt. waves 3 to 5 ft. rain. snow this afternoon. 
.tonight...nw winds 10 to 15 kt with gusts up to 20 kt. waves
2 to 3 ft. snow likely in the evening. 
.fri...w winds 5 to 10 kt, becoming sw 15 to 20 kt in the
afternoon. waves 2 to 3 ft. 
.fri night...sw winds 15 to 20 kt with gusts up to 25 kt. waves
3 to 5 ft. 
.sat...w winds 20 to 25 kt with gusts up to 35 kt. waves 3 to
5 ft. 
.sat night...w winds 15 to 20 kt with gusts up to 25 kt, becoming
nw 5 to 10 kt after midnight. waves 2 to 3 ft. 
.sun...e winds 10 to 15 kt. waves around 2 ft. 
.sun night...se winds 20 to 25 kt with gusts up to 30 kt. waves
3 to 5 ft. rain likely. 
.mon...s winds 25 to 30 kt with gusts up to 40 kt. waves 5 to
8 ft. rain.
.mon night...sw winds 25 to 30 kt with gusts up to 40 kt. waves
5 to 7 ft, except 7 to 10 ft at the bay entrance. 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.

$$

fzus51 kbox 120807
cwfbox
expires:202603122100;;064333

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

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


anz250-122100-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
406 am edt thu mar 12 2026

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

.today...sw winds 15 to 20 kt, becoming nw this afternoon. gusts
up to 30 kt. seas 5 to 7 ft. wave detail: se 5 ft at 7 seconds
and w 3 ft at 4 seconds. a chance of rain this morning, then rain
likely this afternoon. 
.tonight...nw winds 20 to 25 kt. seas 4 to 6 ft. wave detail: nw
5 ft at 5 seconds and se 3 ft at 8 seconds. a chance of rain and
snow in the evening. 
.fri...w winds 15 to 20 kt, becoming sw in the afternoon. gusts
up to 25 kt. seas 4 to 6 ft. wave detail: w 5 ft at 4 seconds and
se 3 ft at 9 seconds. 
.fri night...s winds 20 to 25 kt with gusts up to 30 kt. seas
4 to 6 ft. wave detail: s 5 ft at 5 seconds and se 2 ft at
10 seconds. a chance of rain after midnight. 
.sat...w winds 20 to 25 kt with gusts up to 35 kt. seas 4 to
6 ft. wave detail: sw 5 ft at 6 seconds and se 3 ft at
10 seconds. a chance of rain in the morning. 
.sat night...w winds 20 to 25 kt. gusts up to 35 kt in the
evening. seas 4 to 6 ft. wave detail: w 5 ft at 5 seconds and s
2 ft at 7 seconds. 
.sun...ne winds 10 to 15 kt. seas 2 to 4 ft. 
.sun night...se winds 25 to 30 kt. seas 4 to 6 ft. a chance of
rain. 
.mon...s winds 25 to 35 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 40 kt. seas
8 to 11 ft. 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.

$$

fzus51 kbox 120807
cwfbox
expires:202603122100;;064336

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

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


anz254-122100-
coastal waters from provincetown ma to chatham ma to nantucket ma
out 20 nm-
406 am edt thu mar 12 2026

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

.today...sw winds 15 to 20 kt, becoming nw this afternoon. gusts
up to 30 kt. seas 5 to 8 ft. wave detail: s 6 ft at 7 seconds and
nw 3 ft at 4 seconds. a chance of rain this morning, then rain
this afternoon. 
.tonight...nw winds 15 to 20 kt, increasing to 20 to 25 kt after
midnight. seas 5 to 7 ft. wave detail: nw 5 ft at 5 seconds and s
4 ft at 8 seconds. rain likely with a chance of snow in the
evening. 
.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 7 seconds and s 4 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 6 ft
at 6 seconds and s 3 ft at 9 seconds. 
.sat...w winds 25 to 30 kt with gusts up to 35 kt. seas 6 to
9 ft, except 9 to 11 ft s and e of nantucket. wave detail: s 8 ft
at 8 seconds and w 4 ft at 5 seconds. 
.sat night...w winds 20 to 25 kt, becoming nw 15 to 20 kt after
midnight. gusts up to 30 kt. seas 5 to 7 ft. wave detail: s 5 ft
at 9 seconds and w 4 ft at 5 seconds. 
.sun...ne winds 5 to 10 kt. seas 2 to 4 ft. 
.sun night...se winds 25 to 30 kt. seas 4 to 6 ft. a chance of
rain. 
.mon...s winds 25 to 30 kt with gusts up to 40 kt. seas 8 to
11 ft. rain.
.mon night...s winds 25 to 35 kt with gusts up to 40 kt. seas
9 to 13 ft. 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.

$$

fzus51 kbox 120807
cwfbox
expires:202603122100;;064337

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

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


anz255-122100-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
406 am edt thu mar 12 2026

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

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

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.

$$