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(1/6)
Latest Coastal Waters Forecast by KBOX
Issued 7/21/2026 4:04 AM America/New_York.
Valid through 7/21/2026 5:00 PM America/New_York.
fzus51 kbox 210804
cwfbox
expires:202607212100;;337683
coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
404 am edt tue jul 21 2026
coastal waters from the merrimack river ma to watch hill ri out
to 60 nm
anz237-212100-
block island sound-
404 am edt tue jul 21 2026
...small craft advisory in effect from this evening through
wednesday evening...
.today...se winds 10 to 15 kt with gusts up to 25 kt. seas 2 to
3 ft. wave detail: se 3 ft at 6 seconds and sw 1 foot at
3 seconds. a chance of showers and tstms this afternoon.
.tonight...s winds 20 to 25 kt with gusts up to 30 kt. seas 3 to
5 ft, building to 5 to 7 ft after midnight. wave detail: se 5 ft
at 6 seconds and w 2 ft at 6 seconds, becoming sw 7 ft at
6 seconds and se 2 ft at 8 seconds. showers with a chance of
tstms in the evening, then showers likely after midnight.
.wed...sw winds 15 to 20 kt with gusts up to 30 kt. seas 5 to
7 ft. wave detail: sw 7 ft at 7 seconds and e 1 foot at
8 seconds. showers likely, mainly in the morning.
.wed night...sw winds 15 to 20 kt with gusts up to 25 kt,
becoming nw 5 to 10 kt after midnight. seas 5 to 7 ft. wave
detail: s 6 ft at 9 seconds and w 2 ft at 5 seconds. a chance of
showers in the evening.
.thu...n winds 5 to 10 kt, becoming sw in the afternoon. seas
4 to 6 ft. wave detail: s 5 ft at 9 seconds and e 2 ft at
10 seconds.
.thu night...e winds 5 to 10 kt, becoming n after midnight. seas
3 to 5 ft. wave detail: s 4 ft at 8 seconds and nw 1 foot at
7 seconds.
.fri through sat night...ne winds 5 to 10 kt. seas 2 to 4 ft.
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.
$$
(2/6)
Latest Coastal Waters Forecast by KBOX
Issued 7/21/2026 4:04 AM America/New_York.
Valid through 7/21/2026 5:00 PM America/New_York.
fzus51 kbox 210804
cwfbox
expires:202607212100;;337677
coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
404 am edt tue jul 21 2026
coastal waters from the merrimack river ma to watch hill ri out
to 60 nm
anz255-212100-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
404 am edt tue jul 21 2026
...small craft advisory in effect from this evening through
wednesday evening...
.today...se winds 10 to 15 kt, increasing to 15 to 20 kt this
afternoon. gusts up to 25 kt. seas 2 to 3 ft. wave detail: s 3 ft
at 5 seconds and nw 1 foot at 6 seconds. a chance of showers this
afternoon.
.tonight...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: se 6 ft at 7 seconds and w 1 foot at 7 seconds,
becoming s 9 ft at 7 seconds and nw 2 ft at 7 seconds. showers
with a chance of tstms.
.wed...sw winds 25 to 30 kt, diminishing to 20 to 25 kt in the
afternoon. seas 7 to 10 ft. wave detail: sw 10 ft at 7 seconds
and e 1 foot at 8 seconds. showers with a chance of tstms in the
morning, then a chance of showers in the afternoon.
.wed night...sw winds 20 to 25 kt, becoming w 15 to 20 kt after
midnight. gusts up to 30 kt. seas 6 to 9 ft. wave detail: s 9 ft
at 9 seconds and w 1 foot at 7 seconds. a chance of showers in
the evening. showers likely after midnight.
.thu...n winds around 10 kt, becoming ne in the afternoon. seas
6 to 9 ft, subsiding to 5 to 7 ft in the afternoon. wave detail:
s 7 ft at 9 seconds and nw 1 foot at 4 seconds, becoming s 6 ft
at 8 seconds and n 1 foot at 7 seconds. a chance of showers.
.thu night...e winds 5 to 10 kt, becoming ne after midnight. seas
4 to 6 ft. wave detail: s 5 ft at 8 seconds and e 1 foot at
7 seconds. a chance of showers in the evening.
.fri through sat night...e winds 5 to 10 kt. seas 2 to 4 ft.
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.
$$
(3/6)
Latest Coastal Waters Forecast by KOKX
Issued 7/20/2026 2:43 PM America/New_York.
Valid through 7/21/2026 5:00 AM America/New_York.
fzus51 kokx 201843
cwfokx
expires:202607210900;;304040
coastal waters forecast
national weather service new york ny
243 pm edt mon jul 20 2026
montauk point ny to sandy hook nj out 60 nm offshore, including
long island sound, the long island bays, and new york harbor
anz335-210900-
long island sound west of new haven ct/port jefferson ny-
243 pm edt mon jul 20 2026
.this afternoon...se winds around 5 kt. seas 1 ft or less.
.tonight...s winds 5 to 10 kt. seas 1 ft or less.
.tue...se winds 10 to 15 kt with gusts up to 25 kt. seas 1 ft or
less, then around 2 ft in the afternoon. wave detail: se 1 ft at
2 seconds, becoming se 1 ft at 3 seconds. slight chance of
showers in the morning, then showers likely with chance of tstms
in the afternoon.
.tue night...s winds 10 to 15 kt with gusts up to 20 kt. seas
around 2 ft. wave detail: se 1 ft at 2 seconds. showers and
chance of tstms in the evening, then showers likely with slight
chance of tstms after midnight.
.wed...sw winds 10 to 15 kt with gusts up to 20 kt. seas 1 ft or
less. wave detail: sw 1 ft at 3 seconds. chance of showers and
slight chance of tstms in the morning, then showers likely with
chance of tstms in the afternoon.
.wed night...w winds around 10 kt, becoming nw after midnight.
seas 1 ft or less. wave detail: w 1 ft at 2 seconds. showers
likely with chance of tstms in the evening.
.thu...nw winds 5 to 10 kt. seas 1 ft or less.
.thu night...n winds around 5 kt. seas 1 ft or less.
.fri...ne winds around 5 kt. seas 1 ft or less.
.fri night...se winds 5 to 10 kt. seas 1 ft or less.
winds and seas may be higher in and near tstms.
$$
(4/6)
Latest Coastal Waters Forecast by KOKX
Issued 7/20/2026 2:43 PM America/New_York.
Valid through 7/21/2026 5:00 AM America/New_York.
fzus51 kokx 201843
cwfokx
expires:202607210900;;304042
coastal waters forecast
national weather service new york ny
243 pm edt mon jul 20 2026
montauk point ny to sandy hook nj out 60 nm offshore, including
long island sound, the long island bays, and new york harbor
anz340-210900-
peconic and gardiners bays-
243 pm edt mon jul 20 2026
...small craft advisory in effect from tuesday afternoon through
wednesday afternoon...
.this afternoon...s winds around 5 kt. waves 1 ft or less.
.tonight...s winds 5 to 10 kt. waves 1 ft or less.
.tue...se winds 10 to 15 kt with gusts up to 25 kt. waves 1 ft or
less. showers likely with chance of tstms in the afternoon.
.tue night...s winds 10 to 15 kt with gusts up to 25 kt. waves
1 ft or less. showers and chance of tstms in the evening, then
showers likely with slight chance of tstms after midnight.
.wed...sw winds 10 to 15 kt with gusts up to 25 kt. waves 1 ft or
less. showers likely with slight chance of tstms.
.wed night...sw winds 10 to 15 kt with gusts up to 20 kt,
becoming nw 5 to 10 kt after midnight. waves 1 ft or less. chance
of tstms in the evening. chance of showers.
.thu...nw winds 5 to 10 kt. waves 1 ft or less.
.thu night...n winds around 5 kt. waves 1 ft or less.
.fri...e winds around 5 kt. waves 1 ft or less.
.fri night...e winds around 5 kt. waves 1 ft or less.
winds and waves may be higher in and near tstms.
$$
(5/6)
Latest Coastal Waters Forecast by KOKX
Issued 7/20/2026 2:43 PM America/New_York.
Valid through 7/21/2026 5:00 AM America/New_York.
fzus51 kokx 201843
cwfokx
expires:202607210900;;304043
coastal waters forecast
national weather service new york ny
243 pm edt mon jul 20 2026
montauk point ny to sandy hook nj out 60 nm offshore, including
long island sound, the long island bays, and new york harbor
anz345-210900-
south shore bays from jones inlet through shinnecock bay-
243 pm edt mon jul 20 2026
...small craft advisory in effect from tuesday morning through
wednesday afternoon...
.this afternoon...s winds 5 to 10 kt. waves 1 ft or less.
.tonight...s winds 5 to 10 kt. waves 1 ft or less.
.tue...se winds 10 to 15 kt, becoming s 15 to 20 kt in the
afternoon. waves 1 ft or less. showers likely with chance of
tstms in the afternoon.
.tue night...sw winds 15 to 20 kt with gusts up to 30 kt. waves
1 ft or less. showers and chance of tstms in the evening, then
showers likely with slight chance of tstms after midnight.
.wed...sw winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. waves 1 ft or less. slight chance of tstms. showers
likely, mainly in the morning.
.wed night...sw winds 10 to 15 kt with gusts up to 25 kt,
becoming nw 5 to 10 kt after midnight. waves 1 ft or less. chance
of tstms in the evening. chance of showers.
.thu...n winds 5 to 10 kt. waves 1 ft or less.
.thu night...n winds around 5 kt. waves 1 ft or less.
.fri...e winds 5 to 10 kt. waves 1 ft or less.
.fri night...e winds around 5 kt. waves 1 ft or less.
winds and waves may be higher in and near tstms.
$$
(6/6)
Latest Coastal Waters Forecast by KOKX
Issued 7/20/2026 2:43 PM America/New_York.
Valid through 7/21/2026 5:00 AM America/New_York.
fzus51 kokx 201843
cwfokx
expires:202607210900;;304035
coastal waters forecast
national weather service new york ny
243 pm edt mon jul 20 2026
montauk point ny to sandy hook nj out 60 nm offshore, including
long island sound, the long island bays, and new york harbor
anz350-210900-
moriches inlet ny to montauk point ny out 20 nm-
243 pm edt mon jul 20 2026
...small craft advisory in effect from tuesday morning through
wednesday afternoon...
.this afternoon...s winds 5 to 10 kt. seas 2 to 3 ft. wave
detail: s 3 ft at 7 seconds.
.tonight...s winds 5 to 10 kt. seas 2 to 3 ft. wave detail: s
3 ft at 7 seconds.
.tue...se winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. seas 3 to 5 ft, occasionally to 6 ft. wave detail: s
5 ft at 5 seconds and se 1 ft at 8 seconds. showers likely with
chance of tstms in the afternoon.
.tue night...s winds 20 to 25 kt with gusts up to 30 kt. seas
5 to 8 ft, occasionally to 10 ft. wave detail: s 8 ft at
8 seconds. showers likely with chance of tstms in the evening,
then showers likely with slight chance of tstms after midnight.
.wed...sw winds 20 to 25 kt, diminishing to 15 to 20 kt in the
afternoon. seas 7 to 9 ft, occasionally to 11 ft. wave detail: s
8 ft at 8 seconds. showers likely with slight chance of tstms.
.wed night...sw winds 15 to 20 kt with gusts up to 30 kt,
becoming nw 10 to 15 kt with gusts up to 20 kt after midnight.
seas 6 to 8 ft, occasionally to 10 ft. wave detail: s 8 ft at
8 seconds. chance of showers and tstms in the evening.
.thu...nw winds 5 to 10 kt. seas 5 to 7 ft, occasionally to 9 ft.
.thu night...n winds around 5 kt. seas 4 to 5 ft, occasionally to
6 ft.
.fri...ne winds 5 to 10 kt. seas 3 to 4 ft, occasionally to 5 ft.
.fri night...e winds around 5 kt. seas 3 to 4 ft, occasionally to
5 ft.
winds and seas may be higher in and near tstms.
$$
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