Coastal Waters Forecast
Issued by NWS Boston, MA

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FZUS51 KBOX 161405
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
1004 AM EDT Tue Jul 16 2024

Coastal waters from the Merrimack River MA to Watch Hill RI out
to 25 NM

ANZ200-170300-
1004 AM EDT Tue Jul 16 2024

.Synopsis for Massachusetts and Rhode Island coastal waters...
Persistent SW winds gusting 20-25 knots through Wed.  High dewpoints
will bring continued low status and fog through Wed as well.
Thunderstorms may approach the waters this afternoon, and again on
wed afternoon. A cold front sweeps through Thursday clearing out the
low status and fog. High pressure will bring light winds and dry
conditions through the weekend.

$$

ANZ250-170300-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
1004 AM EDT Tue Jul 16 2024

.THIS AFTERNOON...SW winds 10 to 15 kt. Gusts up to 20 kt. Seas
2 to 3 ft. Wave Detail: S 2 ft at 4 seconds and SE 2 ft at
8 seconds. Patchy fog. Vsby 1 to 3 NM.
.TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. Wave Detail: SW 3 ft at 4 seconds and SE 2 ft at 9 seconds.
Patchy fog. Vsby 1 to 3 NM.
.WED...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Wave Detail: S 3 ft at 7 seconds and SW 2 ft at 3 seconds.
Patchy fog in the morning with vsby 1 to 3 NM.
.WED NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 2 to 4 ft. Wave Detail: SE 3 ft at 7 seconds and SW
1 foot at 3 seconds. A chance of showers.
.THU...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft
at 6 seconds and SE 2 ft at 9 seconds. A chance of showers.
.THU NIGHT...SW winds 5 to 10 kt, becoming NW after midnight.
Seas 2 to 3 ft. Wave Detail: S 2 ft at 6 seconds and SE 2 ft at
9 seconds.
.FRI THROUGH SAT NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft.

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.

$$

ANZ251-170300-
Massachusetts Bay and Ipswich Bay-
1004 AM EDT Tue Jul 16 2024

.THIS AFTERNOON...SW winds 10 to 15 kt. Gusts up to 20 kt. Seas
around 2 ft. Wave Detail: S 1 foot at 3 seconds and SE 1 foot at
7 seconds.
.TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas around 2 ft. Wave Detail: S 2 ft at 4 seconds and
SE 1 foot at 9 seconds. Patchy fog after midnight with vsby 1 to
3 NM.
.WED...SW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas around 2 ft. Wave Detail: SW 1 foot at 3 seconds and SE
1 foot at 9 seconds. A chance of showers in the afternoon.
.WED NIGHT...SW winds 10 to 15 kt. Seas around 2 ft. Wave Detail:
S 1 foot at 3 seconds and SE 1 foot at 9 seconds. A chance of
showers.
.THU...SW winds 5 to 10 kt. Seas around 2 ft in the morning, then
1 foot or less. Wave Detail: SW 1 foot at 3 seconds and SE 1 foot
at 9 seconds. A chance of showers.
.THU NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas
1 foot or less. Wave Detail: SW 1 foot at 3 seconds and SE 1 foot
at 9 seconds.
.FRI THROUGH SAT NIGHT...SW winds 5 to 10 kt. Seas around 2 ft.

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.

$$

ANZ231-170300-
Cape Cod Bay-
1004 AM EDT Tue Jul 16 2024

.THIS AFTERNOON...SW winds 10 to 15 kt. Gusts up to 25 kt. Seas
2 to 4 ft. Wave Detail: S 2 ft at 5 seconds and SW 1 foot at
2 seconds.
.TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
around 2 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at
9 seconds. Patchy fog. Vsby 1 to 3 NM.
.WED...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at
9 seconds. Patchy fog in the morning with vsby 1 to 3 NM.
.WED NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE
1 foot at 9 seconds. A chance of showers in the evening. Showers
likely after midnight.
.THU...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft
at 6 seconds and W 1 foot at 2 seconds. A chance of showers.
.THU NIGHT...SW winds 5 to 10 kt, becoming NW after midnight.
Seas around 2 ft. Wave Detail: S 2 ft at 7 seconds and SW 1 foot
at 2 seconds.
.FRI THROUGH SAT NIGHT...SW winds 5 to 10 kt. Seas around 2 ft.

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.

$$

ANZ254-170300-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
1004 AM EDT Tue Jul 16 2024

...SMALL CRAFT ADVISORY IN EFFECT FROM 5 PM EDT THIS AFTERNOON
THROUGH THURSDAY MORNING...

.THIS AFTERNOON...SW winds 10 to 15 kt with gusts up to 25 kt.
Seas 3 to 4 ft. Wave Detail: S 3 ft at 7 seconds and W 1 foot at
3 seconds.
.TONIGHT...SW winds around 15 kt with gusts up to 25 kt. Seas
3 to 5 ft. Wave Detail: S 4 ft at 7 seconds and W 1 foot at
4 seconds. Patchy fog. Vsby 1 to 3 NM.
.WED...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to
5 ft. Wave Detail: S 5 ft at 7 seconds and W 1 foot at 3 seconds.
Patchy fog in the morning with vsby 1 to 3 NM.
.WED NIGHT...SW winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. Gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: S
5 ft at 8 seconds and W 1 foot at 4 seconds. A chance of showers
in the evening. Showers likely after midnight.
.THU...SW winds 10 to 15 kt. Seas 3 to 5 ft. Wave Detail: S 5 ft
at 8 seconds and W 1 foot at 3 seconds. Showers likely in the
morning. A chance of showers in the afternoon.
.THU NIGHT...SW winds 5 to 10 kt, becoming NW after midnight.
Seas 3 to 5 ft. Wave Detail: S 4 ft at 9 seconds and W 1 foot at
3 seconds.
.FRI THROUGH SAT NIGHT...SW winds 5 to 10 kt. Seas 2 to 4 ft.

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.

$$

ANZ255-170300-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
1004 AM EDT Tue Jul 16 2024

...SMALL CRAFT ADVISORY IN EFFECT FROM 5 PM EDT THIS AFTERNOON
THROUGH THURSDAY MORNING...

.THIS AFTERNOON...SW winds 10 to 15 kt with gusts up to 25 kt.
Seas 3 to 4 ft. Wave Detail: S 4 ft at 7 seconds and SW 1 foot at
3 seconds.
.TONIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to
6 ft. Wave Detail: S 5 ft at 7 seconds and SW 1 foot at
3 seconds. Patchy fog. Vsby 1 to 3 NM.
.WED...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to
6 ft. Wave Detail: S 6 ft at 7 seconds and SW 1 foot at
3 seconds. Patchy fog in the morning with vsby 1 to 3 NM.
.WED NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas
4 to 6 ft. Wave Detail: S 6 ft at 8 seconds and SW 1 foot at
3 seconds. A chance of showers in the evening, then showers
likely with scattered tstms after midnight.
.THU...SW winds 10 to 15 kt. Gusts up to 20 kt in the morning.
Seas 4 to 6 ft. Wave Detail: S 6 ft at 8 seconds and W 1 foot at
3 seconds. Showers likely in the morning. A chance of showers in
the afternoon.
.THU NIGHT...W winds around 10 kt, becoming NW after midnight.
Seas 4 to 6 ft. Wave Detail: S 5 ft at 8 seconds. A chance of
showers in the evening.
.FRI...N winds 5 to 10 kt. Seas 3 to 5 ft.
.FRI NIGHT THROUGH SAT NIGHT...SW 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.

$$

ANZ256-170300-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
1004 AM EDT Tue Jul 16 2024

...SMALL CRAFT ADVISORY IN EFFECT FROM 5 PM EDT THIS AFTERNOON
THROUGH THURSDAY MORNING...

.THIS AFTERNOON...SW winds 10 to 15 kt. Gusts up to 25 kt. Seas
3 to 4 ft. Wave Detail: S 4 ft at 7 seconds.
.TONIGHT...SW winds 15 to 20 kt, diminishing to 10 to 15 kt after
midnight. Gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: S 5 ft
at 7 seconds and SE 1 foot at 9 seconds. Patchy fog. Vsby 1 to
3 NM.
.WED...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to
6 ft. Wave Detail: S 5 ft at 7 seconds. Patchy fog in the morning
with vsby 1 to 3 NM.
.WED NIGHT...SW winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. Gusts up to 25 kt. Seas 5 to 6 ft. Wave Detail: S
6 ft at 8 seconds. A chance of showers in the evening, then
showers likely with scattered tstms after midnight.
.THU...W winds 10 to 15 kt. Seas 5 to 6 ft. Wave Detail: S 6 ft
at 8 seconds. Showers likely in the morning. A chance of showers
in the afternoon.
.THU NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas
4 to 6 ft. Wave Detail: S 5 ft at 8 seconds.
.FRI THROUGH SAT NIGHT...SW winds 5 to 10 kt. Seas 3 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.

$$

ANZ232-170300-
Nantucket Sound-
1004 AM EDT Tue Jul 16 2024

.THIS AFTERNOON...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 S 2 ft at
6 seconds.
.TONIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
4 ft. Wave Detail: SW 3 ft at 4 seconds and SE 1 foot at
9 seconds. Patchy fog. Vsby 1 to 3 NM.
.WED...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
4 ft. Wave Detail: S 3 ft at 7 seconds and SW 2 ft at 3 seconds.
Patchy fog in the morning with vsby 1 to 3 NM.
.WED NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas
2 to 4 ft. Wave Detail: S 3 ft at 7 seconds and SW 2 ft at
4 seconds. A chance of showers in the evening. Showers likely
after midnight.
.THU...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: W 2 ft
at 3 seconds and S 2 ft at 8 seconds. Showers likely, mainly in
the morning.
.THU NIGHT...SW winds 5 to 10 kt, becoming NW after midnight.
Seas 2 to 3 ft. Wave Detail: S 2 ft at 8 seconds and SW 1 foot at
3 seconds.
.FRI THROUGH SAT NIGHT...SW winds 10 to 15 kt. Seas around 2 ft.

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.

$$

ANZ233-170300-
Vineyard Sound-
1004 AM EDT Tue Jul 16 2024

.THIS AFTERNOON...SW winds 10 to 15 kt. Gusts up to 25 kt. Seas
2 to 4 ft. Wave Detail: S 2 ft at 6 seconds and SW 1 foot at
3 seconds.
.TONIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to
4 ft. Wave Detail: S 3 ft at 7 seconds and SW 1 foot at
3 seconds. Patchy fog. Vsby 1 to 3 NM.
.WED...SW winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. Gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: SW
4 ft at 7 seconds and SW 2 ft at 4 seconds. Patchy fog in the
morning with vsby 1 to 3 NM.
.WED NIGHT...SW winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. Seas 3 to 4 ft. Wave Detail: S 4 ft at 7 seconds
and SW 2 ft at 4 seconds. A chance of showers in the evening.
Showers likely after midnight.
.THU...W winds around 10 kt. Seas 3 to 4 ft. Wave Detail: SW 3 ft
at 8 seconds and W 1 foot at 3 seconds. Showers likely, mainly in
the morning.
.THU NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas
2 to 4 ft. Wave Detail: SW 3 ft at 8 seconds and W 1 foot at
3 seconds.
.FRI THROUGH SAT NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft.

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.

$$

ANZ234-170300-
Buzzards Bay-
1004 AM EDT Tue Jul 16 2024

.THIS AFTERNOON...SW winds 10 to 15 kt with gusts up to 25 kt.
Seas 2 to 4 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot
at 8 seconds.
.TONIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
4 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at
9 seconds. Patchy fog. Vsby 1 to 3 NM.
.WED...SW winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SW
3 ft at 6 seconds and SW 2 ft at 3 seconds. Patchy fog in the
morning with vsby 1 to 3 NM.
.WED NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt,
diminishing to 10 to 15 kt after midnight. Seas 2 to 4 ft. Wave
Detail: SW 3 ft at 7 seconds and SW 2 ft at 4 seconds. A chance
of showers in the evening. Showers likely after midnight.
.THU...W winds around 10 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft
at 8 seconds and W 1 foot at 3 seconds. Showers likely, mainly in
the morning.
.THU NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas
2 to 3 ft. Wave Detail: SW 2 ft at 8 seconds and W 1 foot at
3 seconds.
.FRI THROUGH SAT NIGHT...SW winds 10 to 15 kt. Seas around 2 ft.

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.

$$

ANZ235-170300-
Rhode Island Sound-
1004 AM EDT Tue Jul 16 2024

.THIS AFTERNOON...SW winds 10 to 15 kt. Gusts up to 25 kt. Seas
3 to 4 ft. Wave Detail: S 4 ft at 7 seconds and SW 1 foot at
3 seconds.
.TONIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to
5 ft. Wave Detail: S 4 ft at 7 seconds and SW 1 foot at
3 seconds. Patchy fog. Vsby 1 to 3 NM.
.WED...SW winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. Gusts up to 25 kt. Seas 4 to 5 ft. Wave Detail: S 5 ft
at 7 seconds and SW 1 foot at 3 seconds. Patchy fog in the
morning with vsby 1 to 3 NM.
.WED NIGHT...SW winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. Gusts up to 25 kt. Seas 4 to 5 ft. Wave Detail: S
5 ft at 7 seconds and SW 1 foot at 3 seconds. A chance of showers
in the evening. Showers likely after midnight.
.THU...W winds around 10 kt. Seas 4 to 5 ft. Wave Detail: S 5 ft
at 8 seconds. Showers likely, mainly in the morning.
.THU NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas
3 to 5 ft. Wave Detail: S 5 ft at 8 seconds.
.FRI THROUGH SAT NIGHT...SW winds 5 to 10 kt. Seas 2 to 4 ft.

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.

$$

ANZ237-170300-
Block Island Sound-
1004 AM EDT Tue Jul 16 2024

.THIS AFTERNOON...SW winds 10 to 15 kt. Gusts up to 25 kt. Seas
2 to 3 ft. Wave Detail: S 3 ft at 7 seconds and W 1 foot at
2 seconds.
.TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
4 ft. Wave Detail: S 4 ft at 7 seconds and SW 1 foot at
3 seconds. Patchy fog. Vsby 1 to 3 NM.
.WED...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
4 ft. Wave Detail: S 4 ft at 7 seconds and SE 1 foot at
8 seconds. Patchy fog in the morning with vsby 1 to 3 NM.
.WED NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 3 to 5 ft. Wave Detail: S 4 ft at 7 seconds and W
1 foot at 3 seconds. Showers likely. Scattered tstms after
midnight.
.THU...W winds around 10 kt. Seas 3 to 5 ft. Wave Detail: S 5 ft
at 8 seconds and SE 1 foot at 9 seconds. Showers likely, mainly
in the morning.
.THU NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas
2 to 4 ft. Wave Detail: S 4 ft at 8 seconds and SE 1 foot at
9 seconds.
.FRI THROUGH SAT NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 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.

$$

ANZ230-170300-
Boston Harbor-
1004 AM EDT Tue Jul 16 2024

.THIS AFTERNOON...SW winds 10 to 15 kt. Gusts up to 20 kt. Waves
1 foot or less, then around 2 ft.
.TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Waves 1 foot or less.
.WED...SW winds 10 to 15 kt. Waves 1 foot or less. A chance of
showers in the afternoon.
.WED NIGHT...SW winds around 10 kt. Waves 1 foot or less. A
chance of showers.
.THU...W winds 5 to 10 kt. Waves 1 foot or less. A chance of
showers.
.THU NIGHT...W winds 5 to 10 kt, becoming NW after midnight.
Waves 1 foot or less.
.FRI THROUGH SAT NIGHT...SW winds 5 to 10 kt. Waves 1 foot or
less.

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.

$$

ANZ236-170300-
Narragansett Bay-
1004 AM EDT Tue Jul 16 2024

.THIS AFTERNOON...SW winds 5 to 10 kt, increasing to 10 to 15 kt
with gusts up to 25 kt. Waves 2 to 3 ft.
.TONIGHT...SW winds 10 to 15 kt, diminishing to 5 to 10 kt after
midnight. Gusts up to 20 kt. Waves 2 to 4 ft. Patchy fog after
midnight with vsby 1 to 3 NM.
.WED...SW winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to
4 ft. Patchy fog in the morning with vsby 1 to 3 NM.
.WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. Waves 2 to 4 ft. A
chance of showers in the evening. Showers likely after midnight.
.THU...W winds 5 to 10 kt. Waves 2 to 4 ft. Showers likely,
mainly in the morning.
.THU NIGHT...W winds 5 to 10 kt, becoming NW after midnight.
Waves 2 to 4 ft.
.FRI THROUGH SAT NIGHT...SW winds 5 to 10 kt. Waves 2 to 3 ft.

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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