fzus51 kbox 200505
cwfbox
expires:202605201800;;328082

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
105 am edt wed may 20 2026

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


anz235-201800-
rhode island sound-
105 am edt wed may 20 2026

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

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 200505
cwfbox
expires:202605201800;;328085

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
105 am edt wed may 20 2026

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


anz236-201800-
narragansett bay-
105 am edt wed may 20 2026

.rest of tonight...sw winds 10 to 15 kt. waves 2 to 3 ft. 
.wed...sw winds 10 to 15 kt with gusts up to 20 kt. waves 2 to
3 ft. a chance of showers and tstms in the afternoon. 
.wed night...w winds 5 to 10 kt, becoming n after midnight. waves
2 to 3 ft. a chance of showers. a chance of tstms in the evening.
.thu...n winds around 10 kt, becoming e in the afternoon. waves
around 2 ft. 
.thu night...s winds 5 to 10 kt, becoming nw after midnight.
waves around 2 ft. 
.fri...ne winds 5 to 10 kt, becoming se in the afternoon. waves
around 2 ft. 
.fri night...s winds 5 to 10 kt, becoming sw after midnight.
waves around 2 ft in the evening, then 1 foot or less. a chance
of showers after midnight. 
.sat...se winds 5 to 10 kt. waves around 2 ft. a chance of
showers. 
.sat night and sun...e winds 10 to 15 kt. gusts up to 20 kt.
waves 2 to 3 ft. showers likely. 
.sun night...e winds 10 to 15 kt. waves 2 to 3 ft. a chance of
showers.  

winds and waves 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 200505
cwfbox
expires:202605201800;;328083

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
105 am edt wed may 20 2026

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


anz237-201800-
block island sound-
105 am edt wed may 20 2026

.rest of tonight...sw winds 10 to 15 kt with gusts up to 20 kt.
seas 3 to 5 ft. wave detail: sw 4 ft at 7 seconds and w 1 foot at
4 seconds. 
.wed...sw winds 10 to 15 kt with gusts up to 25 kt. seas 3 to
4 ft. wave detail: sw 4 ft at 7 seconds and sw 3 ft at 3 seconds.
a chance of showers and tstms in the afternoon. 
.wed night...w winds 10 to 15 kt with gusts up to 20 kt, becoming
nw 5 to 10 kt after midnight. seas 2 to 4 ft. wave detail: sw
3 ft at 5 seconds and n 1 foot at 3 seconds. a chance of showers.
a chance of tstms in the evening. patchy fog in the evening. 
.thu...ne winds around 10 kt, becoming e in the afternoon. seas
2 to 3 ft. wave detail: sw 3 ft at 7 seconds and ne 1 foot at
3 seconds. a chance of showers in the morning. 
.thu night...s winds 5 to 10 kt, becoming nw after midnight. seas
around 2 ft. wave detail: s 2 ft at 7 seconds and e 1 foot at
3 seconds. 
.fri...ne winds 5 to 10 kt, becoming se in the afternoon. seas
around 2 ft. wave detail: s 2 ft at 7 seconds and e 1 foot at
3 seconds. 
.fri night...s winds 5 to 10 kt, becoming se after midnight. seas
around 2 ft. a chance of showers after midnight. 
.sat and sat night...e winds 10 to 15 kt. gusts up to 20 kt. seas
2 to 4 ft. showers likely. 
.sun...e winds around 15 kt with gusts up to 20 kt. seas 3 to
5 ft. showers likely. 
.sun night...e winds 10 to 15 kt with gusts up to 20 kt. seas
3 to 5 ft. a chance of showers.  

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 200505
cwfbox
expires:202605201800;;328077

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
105 am edt wed may 20 2026

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


anz255-201800-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
105 am edt wed may 20 2026

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

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

$$