fzus51 kbox 180504
cwfbox
expires:202606181800;;936336

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 am edt thu jun 18 2026

coastal waters from the merrimack river ma to watch hill ri out
to 60 nm


anz231-181800-
cape cod bay-
104 am edt thu jun 18 2026

...gale watch in effect from 11 am edt this morning through this
evening...

.rest of tonight...s winds 5 to 10 kt. seas 1 foot or less. wave
detail: s 1 foot at 2 seconds and se 1 foot at 8 seconds. 
.thu...s winds 10 to 15 kt with gusts up to 25 kt, increasing to
15 to 20 kt with gusts up to 35 kt in the afternoon. seas 2 to
3 ft, building to 4 to 6 ft in the afternoon. wave detail: s 2 ft
at 3 seconds and se 2 ft at 8 seconds, becoming s 3 ft at
5 seconds and e 2 ft at 8 seconds. a chance of showers in the
afternoon. 
.thu night...sw 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, subsiding to 2 ft after midnight. wave detail: s
3 ft at 4 seconds and e 1 foot at 8 seconds, becoming sw 2 ft at
3 seconds and se 2 ft at 7 seconds. patchy fog in the evening. a
chance of showers in the evening with vsby 1 nm or less. 
.fri...sw winds 10 to 15 kt with gusts up to 25 kt. seas 2 to
3 ft. wave detail: sw 2 ft at 3 seconds and e 1 foot at
7 seconds. 
.fri night through sat night...w winds 10 to 15 kt with gusts up
to 25 kt. seas 2 to 3 ft. wave detail: w 2 ft at 3 seconds and se
1 foot at 7 seconds. 
.sun and sun night...sw winds 5 to 10 kt. seas around 2 ft, then
1 foot or less. wave detail: nw 1 foot at 4 seconds and se 1 foot
at 5 seconds, becoming sw 1 foot at 3 seconds and e 1 foot at
5 seconds. 
.mon...se winds 5 to 10 kt with gusts up to 20 kt. seas around
2 ft. showers likely. 
.mon night...w winds 10 to 15 kt with gusts up to 20 kt. seas
2 to 3 ft. showers likely.  

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 180504
cwfbox
expires:202606181800;;936340

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 am edt thu jun 18 2026

coastal waters from the merrimack river ma to watch hill ri out
to 60 nm


anz232-181800-
nantucket sound-
104 am edt thu jun 18 2026

...gale watch in effect from 11 am edt this morning through this
evening...

.rest of tonight...s winds around 10 kt. seas around 2 ft. wave
detail: sw 1 foot at 3 seconds and se 1 foot at 7 seconds. 
.thu...s winds 15 to 20 kt with gusts up to 25 kt, increasing to
20 to 25 kt with gusts up to 35 kt in the afternoon. seas 2 to
3 ft, building to 3 to 5 ft in the afternoon. wave detail: se
3 ft at 6 seconds, becoming s 4 ft at 6 seconds and e 2 ft at
7 seconds. 
.thu night...sw winds 20 to 25 kt, diminishing to 10 to 15 kt
after midnight. gusts up to 30 kt. seas 3 to 5 ft. wave detail:
se 4 ft at 6 seconds and se 1 foot at 14 seconds. patchy fog in
the evening with vsby 1 nm or less. 
.fri...w winds 10 to 15 kt, becoming sw 15 to 20 kt in the
afternoon. gusts up to 25 kt. seas 2 to 4 ft. wave detail: sw
3 ft at 4 seconds and se 2 ft at 8 seconds. 
.fri night through sat night...w winds 15 to 20 kt with gusts up
to 25 kt. seas 2 to 4 ft. wave detail: w 3 ft at 4 seconds and s
2 ft at 9 seconds. 
.sun and sun night...sw winds 10 to 15 kt with gusts up to 20 kt.
seas 2 to 3 ft. wave detail: w 2 ft at 3 seconds and se 1 foot at
7 seconds. 
.mon...s winds 15 to 20 kt. seas 2 to 4 ft. showers likely. 
.mon night...w winds 15 to 20 kt with gusts up to 25 kt. seas
2 to 4 ft. showers likely.  

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 180504
cwfbox
expires:202606181800;;936341

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 am edt thu jun 18 2026

coastal waters from the merrimack river ma to watch hill ri out
to 60 nm


anz233-181800-
vineyard sound-
104 am edt thu jun 18 2026

...gale watch in effect from 11 am edt this morning through this
evening...

.rest of tonight...s winds around 10 kt. seas around 2 ft. wave
detail: se 2 ft at 7 seconds and sw 1 foot at 4 seconds. 
.thu...s winds 15 to 20 kt with gusts up to 25 kt, increasing to
20 to 25 kt with gusts up to 35 kt in the afternoon. seas 2 to
4 ft, building to 4 to 6 ft in the afternoon. wave detail: s 4 ft
at 7 seconds, becoming sw 6 ft at 7 seconds and se 1 foot at
10 seconds. patchy fog in the afternoon with vsby 1 to 3 nm. 
.thu night...sw winds 15 to 20 kt with gusts up to 35 kt,
diminishing to 10 to 15 kt with gusts up to 20 kt after midnight.
seas 4 to 6 ft. wave detail: se 6 ft at 7 seconds and sw 4 ft at
8 seconds. patchy fog. vsby 1 to 3 nm. 
.fri...sw winds 15 to 20 kt with gusts up to 25 kt. seas 3 to
5 ft. wave detail: sw 4 ft at 7 seconds and s 4 ft at 8 seconds. 
.fri night and sat...w winds 15 to 20 kt with gusts up to 25 kt.
seas 3 to 5 ft. wave detail: sw 5 ft at 6 seconds and s 4 ft at
9 seconds. 
.sat night...w winds 15 to 20 kt, diminishing to around 10 kt
after midnight. seas 2 to 4 ft. wave detail: sw 4 ft at 7 seconds
and sw 1 foot at 10 seconds.
.sun...w winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
3 ft. 
.sun night...sw winds 10 to 15 kt with gusts up to 20 kt. seas
2 to 3 ft. a chance of showers. 
.mon...s winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
4 ft. showers likely. 
.mon night...w winds 15 to 20 kt with gusts up to 25 kt. seas
3 to 5 ft. showers likely.  

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 180504
cwfbox
expires:202606181800;;936342

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 am edt thu jun 18 2026

coastal waters from the merrimack river ma to watch hill ri out
to 60 nm


anz234-181800-
buzzards bay-
104 am edt thu jun 18 2026

...gale watch in effect from 11 am edt this morning through this
evening...

.rest of tonight...s winds around 10 kt. seas around 2 ft. wave
detail: sw 1 foot at 3 seconds and se 1 foot at 7 seconds. 
.thu...s winds 15 to 20 kt. gusts up to 25 kt, increasing to
35 kt in the afternoon. seas 2 to 3 ft, building to 4 to 6 ft in
the afternoon. wave detail: s 3 ft at 6 seconds, becoming s 5 ft
at 6 seconds. patchy fog in the afternoon. a chance of showers in
the afternoon with vsby 1 to 3 nm. 
.thu night...sw winds 15 to 20 kt with gusts up to 35 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 7 seconds. patchy fog in
the evening with vsby 1 to 3 nm. 
.fri...w winds 10 to 15 kt with gusts up to 20 kt, becoming sw
15 to 20 kt with gusts up to 30 kt in the afternoon. seas 2 to
4 ft. wave detail: s 4 ft at 7 seconds and e 1 foot at
14 seconds. 
.fri night through sat night...w winds 15 to 20 kt with gusts up
to 25 kt. seas 2 to 4 ft. wave detail: sw 4 ft at 5 seconds and
sw 3 ft at 9 seconds. 
.sun...w winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
3 ft. wave detail: sw 3 ft at 6 seconds and se 1 foot at
9 seconds. 
.sun night...sw winds 10 to 15 kt with gusts up to 20 kt. seas
around 2 ft. a chance of showers. 
.mon and mon night...s winds 10 to 15 kt, becoming w 15 to 20 kt.
seas 2 to 4 ft. showers likely.  

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 180504
cwfbox
expires:202606181800;;936343

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 am edt thu jun 18 2026

coastal waters from the merrimack river ma to watch hill ri out
to 60 nm


anz235-181800-
rhode island sound-
104 am edt thu jun 18 2026

...small craft advisory in effect from 11 am edt this morning
through friday evening...

.rest of tonight...s winds around 10 kt. seas 2 to 3 ft. wave
detail: se 3 ft at 7 seconds. 
.thu...s winds 15 to 20 kt with gusts up to 25 kt, increasing to
20 to 25 kt with gusts up to 35 kt in the afternoon. seas 3 to
5 ft, building to 5 to 7 ft in the afternoon. wave detail: sw
5 ft at 7 seconds and se 5 ft at 9 seconds, becoming sw 7 ft at
7 seconds and se 2 ft at 10 seconds. patchy fog in the afternoon.
a chance of showers in the afternoon with vsby 1 nm or less. 
.thu night...sw winds 15 to 20 kt with gusts up to 30 kt,
becoming w 10 to 15 kt with gusts up to 20 kt after midnight.
seas 5 to 7 ft. wave detail: sw 7 ft at 7 seconds and se 3 ft at
8 seconds. patchy fog in the evening with vsby 1 to 3 nm. 
.fri...sw winds 15 to 20 kt with gusts up to 25 kt. seas 4 to
6 ft. wave detail: sw 6 ft at 7 seconds and se 2 ft at 8 seconds.
.fri night...w winds 15 to 20 kt with gusts up to 25 kt. seas
4 to 6 ft. wave detail: s 6 ft at 9 seconds and w 3 ft at
7 seconds. 
.sat and sat night...w winds 15 to 20 kt with gusts up to 25 kt.
seas 3 to 5 ft. wave detail: s 5 ft at 7 seconds. 
.sun...w winds 15 to 20 kt. seas 2 to 3 ft. 
.sun night...sw winds 10 to 15 kt with gusts up to 20 kt. seas
2 to 3 ft. a chance of showers. 
.mon...s winds 15 to 20 kt. seas 4 to 6 ft. showers likely. 
.mon night...nw winds 15 to 20 kt with gusts up to 25 kt. seas
4 to 6 ft. showers likely.  

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 180504
cwfbox
expires:202606181800;;936346

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 am edt thu jun 18 2026

coastal waters from the merrimack river ma to watch hill ri out
to 60 nm


anz236-181800-
narragansett bay-
104 am edt thu jun 18 2026

...small craft advisory in effect from 11 am edt this morning
through this evening...

.rest of tonight...s winds 5 to 10 kt. waves around 2 ft. 
.thu...s winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. gusts up to 30 kt. waves 2 to 3 ft, building to 3 to
5 ft in the afternoon. patchy fog in the afternoon. a chance of
showers in the afternoon with vsby 1 to 3 nm. 
.thu night...sw winds 10 to 15 kt with gusts up to 30 kt,
becoming w 5 to 10 kt after midnight. waves 3 to 5 ft. patchy fog
in the evening with vsby 1 to 3 nm. 
.fri...w winds 10 to 15 kt, becoming sw 15 to 20 kt in the
afternoon. gusts up to 25 kt. waves 2 to 4 ft. 
.fri night through sat night...w winds 15 to 20 kt with gusts up
to 25 kt. waves 2 to 4 ft. 
.sun...w winds 10 to 15 kt with gusts up to 20 kt. waves around
2 ft. 
.sun night...sw winds 5 to 10 kt. waves around 2 ft. a chance of
showers. 
.mon and mon night...s winds 10 to 15 kt, becoming nw. gusts up
to 20 kt. waves 2 to 4 ft. showers likely.  

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 180504
cwfbox
expires:202606181800;;936334

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 am edt thu jun 18 2026

coastal waters from the merrimack river ma to watch hill ri out
to 60 nm


anz250-181800-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
104 am edt thu jun 18 2026

...gale watch in effect from 11 am edt this morning through this
evening...

.rest of tonight...s winds 10 to 15 kt. seas around 2 ft. wave
detail: s 2 ft at 4 seconds and e 1 foot at 7 seconds. 
.thu...s winds 15 to 20 kt with gusts up to 25 kt, increasing to
20 to 25 kt with gusts up to 35 kt in the afternoon. seas 2 to
4 ft, building to 4 to 6 ft in the afternoon. wave detail: s 4 ft
at 5 seconds and e 1 foot at 8 seconds, becoming se 6 ft at
7 seconds. patchy fog in the afternoon. a chance of showers in
the afternoon with vsby 1 to 3 nm. 
.thu night...sw winds 20 to 25 kt with gusts up to 35 kt,
diminishing to 10 to 15 kt with gusts up to 20 kt after midnight.
seas 4 to 6 ft. wave detail: se 6 ft at 7 seconds. patchy fog in
the evening. a chance of showers in the evening with vsby 1 to
3 nm. 
.fri...sw winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
4 ft. wave detail: se 3 ft at 7 seconds and w 2 ft at 4 seconds. 
.fri night through sat night...w winds 15 to 20 kt with gusts up
to 25 kt. seas 2 to 4 ft. wave detail: w 3 ft at 4 seconds and se
3 ft at 8 seconds. 
.sun and sun night...sw winds 5 to 10 kt. seas 2 to 3 ft. wave
detail: w 2 ft at 4 seconds and se 1 foot at 7 seconds. 
.mon...e winds 10 to 15 kt with gusts up to 20 kt. seas around
2 ft. showers likely. 
.mon night...n winds 10 to 15 kt with gusts up to 20 kt. seas
2 to 4 ft. showers likely.  

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 180504
cwfbox
expires:202606181800;;936337

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 am edt thu jun 18 2026

coastal waters from the merrimack river ma to watch hill ri out
to 60 nm


anz254-181800-
coastal waters from provincetown ma to chatham ma to nantucket ma
out 20 nm-
104 am edt thu jun 18 2026

...small craft advisory in effect from this afternoon through
friday evening...

.rest of tonight...s winds around 10 kt. seas 2 to 3 ft. wave
detail: s 3 ft at 7 seconds and sw 1 foot at 3 seconds. patchy
fog. vsby 1 to 3 nm. 
.thu...s winds 15 to 20 kt, increasing to 20 to 25 kt in the
afternoon. gusts up to 30 kt. seas 2 to 4 ft, building to 4 to
6 ft in the afternoon. wave detail: s 4 ft at 7 seconds and sw
1 foot at 4 seconds, becoming s 6 ft at 6 seconds and e 1 foot at
7 seconds. patchy fog in the afternoon with vsby 1 nm or less. 
.thu night...sw winds 20 to 25 kt, diminishing to 10 to 15 kt
after midnight. gusts up to 30 kt. seas 5 to 7 ft. wave detail:
se 6 ft at 7 seconds and sw 2 ft at 4 seconds. patchy fog. vsby
1 nm or less. 
.fri...sw winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. gusts up to 25 kt. seas 4 to 6 ft. wave detail: s 5 ft
at 8 seconds and w 3 ft at 4 seconds. 
.fri night...w winds 15 to 20 kt with gusts up to 25 kt. seas
4 to 6 ft. wave detail: s 6 ft at 9 seconds and w 3 ft at
4 seconds. 
.sat and sat night...w winds 15 to 20 kt with gusts up to 25 kt.
seas 3 to 5 ft. wave detail: s 4 ft at 8 seconds and w 3 ft at
5 seconds. 
.sun and sun night...sw winds 10 to 15 kt. gusts up to 20 kt.
seas 2 to 4 ft. 
.mon...s winds 15 to 20 kt. seas 3 to 5 ft. showers likely. 
.mon night...sw winds 15 to 20 kt with gusts up to 25 kt. seas
4 to 6 ft. showers likely.  

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 180504
cwfbox
expires:202606181800;;936338

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 am edt thu jun 18 2026

coastal waters from the merrimack river ma to watch hill ri out
to 60 nm


anz255-181800-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
104 am edt thu jun 18 2026

...small craft advisory in effect from 11 am edt this morning
through friday evening...

.rest of tonight...s winds around 10 kt. seas 3 to 4 ft. wave
detail: se 3 ft at 7 seconds and sw 1 foot at 4 seconds. 
.thu...s winds 15 to 20 kt, increasing to 20 to 25 kt in the
afternoon. gusts up to 30 kt. seas 3 to 4 ft, building to 5 to
7 ft in the afternoon. wave detail: se 4 ft at 7 seconds and sw
1 foot at 8 seconds, becoming se 7 ft at 7 seconds and w 1 foot
at 7 seconds. patchy fog in the afternoon with vsby 1 to 3 nm.
.thu night...sw winds 20 to 25 kt, diminishing to 15 to 20 kt
after midnight. gusts up to 30 kt. seas 5 to 8 ft. wave detail: s
8 ft at 7 seconds and sw 5 ft at 8 seconds. patchy fog. vsby 1 nm
or less, increasing to 1 to 3 nm after midnight. 
.fri...sw winds 15 to 20 kt with gusts up to 25 kt. seas 5 to
7 ft. wave detail: sw 7 ft at 9 seconds and w 4 ft at 8 seconds. 
.fri night...w winds 15 to 20 kt with gusts up to 25 kt. seas
5 to 7 ft. wave detail: sw 7 ft at 9 seconds and w 5 ft at
6 seconds. 
.sat and sat night...w winds 15 to 20 kt with gusts up to 25 kt.
seas 4 to 6 ft. wave detail: sw 6 ft at 7 seconds and s 5 ft at
8 seconds. 
.sun and sun night...sw winds 10 to 15 kt with gusts up to 20 kt.
seas 2 to 4 ft. 
.mon...s winds 15 to 20 kt with gusts up to 25 kt. seas 5 to
7 ft. showers likely. 
.mon night...sw winds 20 to 25 kt. seas 5 to 7 ft. showers
likely.  

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.

$$