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(1/4)
Latest Coastal Waters Forecast by KBOX
Issued 7/18/2026 5:01 AM America/New_York.
Valid through 7/18/2026 6:15 PM America/New_York.
fzus51 kbox 180901
cwfbox
expires:202607182215;;167619
coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
501 am edt sat jul 18 2026
coastal waters from the merrimack river ma to watch hill ri out
to 60 nm
anz235-182215-
rhode island sound-
501 am edt sat jul 18 2026
...small craft advisory in effect from 11 am edt this morning
through sunday morning...
.today...s winds 10 to 15 kt with gusts up to 25 kt. seas 2 to
3 ft. wave detail: sw 3 ft at 5 seconds and se 1 foot at
8 seconds. areas of smoke. showers likely with a chance of tstms
this afternoon with vsby 1 to 3 nm.
.tonight...sw winds 20 to 25 kt with gusts up to 30 kt. seas 3 to
5 ft. wave detail: sw 5 ft at 5 seconds and s 3 ft at 8 seconds.
a chance of tstms. showers likely in the evening, then a chance
of showers after midnight.
.sun...w winds 10 to 15 kt. gusts up to 25 kt in the morning.
seas 3 to 5 ft. wave detail: sw 5 ft at 7 seconds and se 2 ft at
8 seconds.
.sun night...nw winds 5 to 10 kt. seas 2 to 4 ft. wave detail: sw
4 ft at 6 seconds and se 1 foot at 12 seconds.
.mon and mon night...s winds 5 to 10 kt. seas 2 to 3 ft. wave
detail: sw 3 ft at 7 seconds and se 1 foot at 12 seconds.
.tue...s winds 15 to 20 kt. seas 2 to 3 ft. wave detail: s 3 ft
at 8 seconds and w 1 foot at 5 seconds. a chance of showers and
tstms.
.tue night...s winds 20 to 25 kt with gusts up to 30 kt. seas
5 to 7 ft. showers with a chance of tstms.
.wed...sw winds 20 to 25 kt with gusts up to 30 kt. seas 7 to
10 ft. showers.
.wed night...sw winds 20 to 25 kt with gusts up to 30 kt. seas
6 to 9 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.
$$
(2/4)
Latest Coastal Waters Forecast by KBOX
Issued 7/18/2026 5:01 AM America/New_York.
Valid through 7/18/2026 6:15 PM America/New_York.
fzus51 kbox 180901
cwfbox
expires:202607182215;;167622
coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
501 am edt sat jul 18 2026
coastal waters from the merrimack river ma to watch hill ri out
to 60 nm
anz236-182215-
narragansett bay-
501 am edt sat jul 18 2026
...small craft advisory in effect from 11 am edt this morning
through sunday morning...
.today...s winds 5 to 10 kt, increasing to 10 to 15 kt this
afternoon. gusts up to 25 kt. waves 2 to 3 ft. areas of smoke.
showers with a chance of tstms this afternoon with vsby 1 to
3 nm.
.tonight...sw winds 15 to 20 kt, diminishing to 10 to 15 kt after
midnight. gusts up to 30 kt. waves 2 to 3 ft. a chance of tstms.
showers likely in the evening, then a chance of showers after
midnight.
.sun...nw winds 10 to 15 kt. gusts up to 20 kt in the morning.
waves 2 to 3 ft.
.sun night...nw winds 5 to 10 kt. waves around 2 ft.
.mon and mon night...s winds 5 to 10 kt. waves around 2 ft.
.tue...s winds 10 to 15 kt with gusts up to 20 kt. waves 2 to
3 ft. a chance of showers and tstms.
.tue night through wed night...sw winds 15 to 20 kt with gusts up
to 30 kt. waves 3 to 5 ft. showers with a chance of tstms.
winds and waves higher in and near tstms.
seas are reported as significant wave height, which is the
average of the highest third of the waves. individual wave
heights may be more than twice the significant wave height.
$$
(3/4)
Latest Coastal Waters Forecast by KBOX
Issued 7/18/2026 5:01 AM America/New_York.
Valid through 7/18/2026 6:15 PM America/New_York.
fzus51 kbox 180901
cwfbox
expires:202607182215;;167620
coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
501 am edt sat jul 18 2026
coastal waters from the merrimack river ma to watch hill ri out
to 60 nm
anz237-182215-
block island sound-
501 am edt sat jul 18 2026
...small craft advisory in effect from 11 am edt this morning
through sunday morning...
.today...s winds 10 to 15 kt with gusts up to 25 kt. seas around
2 ft, building to 3 to 4 ft this afternoon. wave detail: s 2 ft
at 5 seconds and w 1 foot at 2 seconds, becoming sw 3 ft at
4 seconds and se 1 foot at 8 seconds. areas of smoke. a slight
chance of showers with isolated tstms this morning. showers with
a chance of tstms this afternoon with vsby 1 to 3 nm.
.tonight...sw winds 15 to 20 kt with gusts up to 30 kt. seas 3 to
5 ft. wave detail: sw 4 ft at 5 seconds and se 1 foot at
8 seconds. a chance of tstms. showers likely in the evening, then
a chance of showers after midnight.
.sun...w winds 10 to 15 kt. gusts up to 25 kt in the morning.
seas 2 to 4 ft. wave detail: s 4 ft at 7 seconds and w 2 ft at
4 seconds.
.sun night...nw winds 5 to 10 kt. seas 2 to 3 ft. wave detail: s
3 ft at 7 seconds and w 1 foot at 3 seconds.
.mon and mon night...s winds 5 to 10 kt. seas 2 to 3 ft. wave
detail: s 3 ft at 7 seconds and nw 1 foot at 3 seconds.
.tue...se winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
3 ft. wave detail: sw 3 ft at 5 seconds and se 1 foot at
8 seconds. a chance of showers and tstms.
.tue night...s winds 15 to 20 kt with gusts up to 30 kt. seas
4 to 6 ft. showers with a chance of tstms.
.wed...sw winds 15 to 20 kt with gusts up to 30 kt. seas 5 to
8 ft. showers.
.wed night...sw winds 15 to 20 kt with gusts up to 30 kt. seas
5 to 7 ft. a chance of showers and tstms.
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.
$$
(4/4)
Latest Coastal Waters Forecast by KBOX
Issued 7/18/2026 5:01 AM America/New_York.
Valid through 7/18/2026 6:15 PM America/New_York.
fzus51 kbox 180901
cwfbox
expires:202607182215;;167614
coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
501 am edt sat jul 18 2026
coastal waters from the merrimack river ma to watch hill ri out
to 60 nm
anz255-182215-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
501 am edt sat jul 18 2026
...small craft advisory in effect from 11 am edt this morning
through sunday evening...
.today...s winds 10 to 15 kt with gusts up to 25 kt. seas 2 to
3 ft. wave detail: sw 3 ft at 5 seconds and se 1 foot at
8 seconds. patchy smoke. a chance of showers and tstms this
afternoon.
.tonight...sw winds 20 to 25 kt with gusts up to 30 kt. seas 3 to
5 ft, building to 5 to 6 ft after midnight. wave detail: s 5 ft
at 5 seconds and nw 1 foot at 6 seconds, becoming sw 6 ft at
6 seconds and nw 2 ft at 6 seconds. a chance of tstms. showers in
the evening, then a chance of showers after midnight.
.sun...w winds 15 to 20 kt with gusts up to 25 kt, diminishing to
10 to 15 kt in the afternoon. seas 4 to 6 ft. wave detail: w 6 ft
at 6 seconds and e 1 foot at 9 seconds.
.sun night...w winds around 10 kt, becoming nw after midnight.
seas 3 to 4 ft. wave detail: sw 4 ft at 7 seconds and nw 1 foot
at 3 seconds.
.mon and mon night...s winds 5 to 10 kt. seas 2 to 4 ft. wave
detail: s 4 ft at 8 seconds and nw 1 foot at 3 seconds.
.tue...se winds 15 to 20 kt. seas 2 to 3 ft. wave detail: s 3 ft
at 7 seconds and nw 1 foot at 5 seconds. a chance of showers.
.tue night...s winds 25 to 30 kt. seas 5 to 7 ft. showers with a
chance of tstms.
.wed...sw winds 25 to 30 kt with gusts up to 35 kt. seas 9 to
12 ft. showers.
.wed night...sw winds 20 to 25 kt with gusts up to 30 kt. seas
7 to 10 ft. showers likely.
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.
$$
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