330
FZUS51 KBOX 172004
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
404 PM EDT Tue Sep 17 2024

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

ANZ200-180900-
404 PM EDT Tue Sep 17 2024

.Synopsis for Massachusetts and Rhode Island coastal waters...
High pres over New England will continue to provide dry, tranquil
boating weather through much of Wed. Low pres near the Carolinas and
mid-Atlantic coast then spreads a period of enhanced onshore
easterly winds, building seas and periods of rain late Wed and into
Thurs. High pres then returns for Fri into the weekend, with a
continued enhanced east-northeast breeze.

$$

ANZ250-180900-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
404 PM EDT Tue Sep 17 2024

.TONIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE
2 ft at 8 seconds and SW 1 foot at 3 seconds. Patchy fog. Vsby
1 to 3 NM, decreasing to 1 NM or less after midnight.
.WED...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft
at 8 seconds and SW 1 foot at 2 seconds. Patchy fog. Vsby 1 NM or
less, increasing to 1 to 3 NM in the afternoon.
.WED NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE
3 ft at 8 seconds and SE 2 ft at 11 seconds. Patchy fog. A chance
of showers after midnight. Vsby 1 to 3 NM.
.THU...NE winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas 3 to 5 ft. Wave Detail: SE 4 ft at 10 seconds and NE 1 foot
at 3 seconds. A chance of showers. Patchy fog in the morning with
vsby 1 to 3 NM.
.THU NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas
4 to 6 ft. Wave Detail: E 5 ft at 10 seconds and NE 1 foot at
4 seconds. A chance of showers in the evening.
.FRI AND FRI NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt.
Seas 5 to 7 ft. Wave Detail: E 6 ft at 8 seconds and NE 2 ft at
5 seconds.
.SAT THROUGH SUN NIGHT...NE winds 15 to 20 kt with gusts up to
25 kt. Seas 6 to 8 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.

$$

ANZ251-180900-
Massachusetts Bay and Ipswich Bay-
404 PM EDT Tue Sep 17 2024

.TONIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE
2 ft at 8 seconds and SE 1 foot at 3 seconds. Patchy fog after
midnight with vsby 1 NM or less.
.WED...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft
at 8 seconds and E 1 foot at 2 seconds. Patchy fog. Vsby 1 to
3 NM.
.WED NIGHT...E winds 5 to 10 kt, becoming NE after midnight. Seas
around 2 ft. Wave Detail: SE 2 ft at 8 seconds and E 2 ft at
11 seconds. Patchy fog. A chance of showers after midnight. Vsby
1 to 3 NM.
.THU...NE winds around 10 kt. Seas 2 to 4 ft. Wave Detail: E 3 ft
at 10 seconds and NE 2 ft at 3 seconds. A chance of showers.
Patchy fog in the morning with vsby 1 to 3 NM.
.THU NIGHT AND FRI...NE winds 10 to 15 kt with gusts up to 25 kt.
Seas 4 to 6 ft. Wave Detail: E 4 ft at 8 seconds and NE 3 ft at
5 seconds.
.FRI NIGHT...NE winds 10 to 15 kt with gusts up to 25 kt. Seas
5 to 7 ft. Wave Detail: E 5 ft at 8 seconds and NE 2 ft at
5 seconds.
.SAT THROUGH SUN NIGHT...NE winds 10 to 15 kt with gusts up to
25 kt. Seas 5 to 7 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.

$$

ANZ231-180900-
Cape Cod Bay-
404 PM EDT Tue Sep 17 2024

.TONIGHT...S winds 5 to 10 kt, diminishing to around 5 kt after
midnight. Seas 1 foot or less. Wave Detail: SE 1 foot at
3 seconds and SE 1 foot at 8 seconds. Patchy fog. Vsby 1 to 3 NM,
decreasing to 1 NM or less after midnight.
.WED...SE winds around 5 kt, becoming E in the afternoon. Seas
1 foot or less, then around 2 ft in the afternoon. Wave Detail:
SE 1 foot at 8 seconds and E 1 foot at 12 seconds, becoming SE
2 ft at 8 seconds and E 1 foot at 2 seconds. Patchy fog in the
morning with vsby 1 NM or less.
.WED NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE
2 ft at 8 seconds and E 1 foot at 2 seconds. Patchy fog. A chance
of showers. Vsby 1 to 3 NM after midnight.
.THU...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. Wave Detail: SE 3 ft at 8 seconds and N 2 ft at 3 seconds.
A chance of showers. Patchy fog in the morning with vsby 1 to
3 NM.
.THU NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 5 ft. Wave Detail: SE 3 ft at 8 seconds and N 2 ft at
3 seconds. A chance of showers in the evening.
.FRI AND FRI NIGHT...NE winds 10 to 15 kt with gusts up to 30 kt.
Seas 3 to 5 ft. Wave Detail: E 5 ft at 8 seconds and E 3 ft at
8 seconds.
.SAT THROUGH SUN NIGHT...NE winds 15 to 20 kt with gusts up to
30 kt. Seas 4 to 6 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.

$$

ANZ254-180900-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
404 PM EDT Tue Sep 17 2024

...SMALL CRAFT ADVISORY IN EFFECT FROM WEDNESDAY AFTERNOON
THROUGH THURSDAY MORNING...

.TONIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE
3 ft at 8 seconds and SE 1 foot at 12 seconds. Patchy fog. Vsby
1 NM or less.
.WED...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft
at 8 seconds and SE 2 ft at 12 seconds. Patchy fog in the morning
with vsby 1 NM or less.
.WED NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. Wave Detail: SE
3 ft at 8 seconds and SE 2 ft at 11 seconds. Patchy fog. A chance
of showers in the evening. Showers likely after midnight. Vsby
1 to 3 NM.
.THU...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 5 to
7 ft. Wave Detail: SE 5 ft at 8 seconds and NE 2 ft at 4 seconds.
A chance of showers. Patchy fog in the morning.
.THU NIGHT AND FRI...NE winds 10 to 15 kt with gusts up to 25 kt.
Seas 6 to 7 ft. Wave Detail: SE 5 ft at 8 seconds and E 5 ft at
8 seconds. A chance of showers in the evening. A chance of
showers in the afternoon.
.FRI NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas
6 to 8 ft. Wave Detail: E 6 ft at 8 seconds and SE 3 ft at
9 seconds.
.SAT THROUGH SUN NIGHT...NE winds 15 to 20 kt with gusts up to
25 kt. Seas 6 to 9 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.

$$

ANZ255-180900-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
404 PM EDT Tue Sep 17 2024

...SMALL CRAFT ADVISORY IN EFFECT FROM WEDNESDAY AFTERNOON
THROUGH THURSDAY MORNING...

.TONIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE
3 ft at 8 seconds and SE 1 foot at 13 seconds. Patchy fog. Vsby
1 NM or less.
.WED...E winds 10 to 15 kt. Seas 2 to 4 ft. Wave Detail: SE 4 ft
at 8 seconds and SE 1 foot at 12 seconds. Patchy fog in the
morning. A chance of showers in the afternoon. Vsby 1 NM or less
in the morning.
.WED NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 5 ft. Wave Detail: SE 4 ft at 8 seconds and E 1 foot at
3 seconds. Patchy fog. Showers likely. Vsby 1 to 3 NM.
.THU...NE winds around 15 kt with gusts up to 20 kt. Seas 4 to
6 ft. Wave Detail: SE 4 ft at 8 seconds and NE 3 ft at 4 seconds.
A chance of showers. Patchy fog in the morning.
.THU NIGHT THROUGH FRI NIGHT...NE winds 15 to 20 kt with gusts up
to 25 kt. Seas 5 to 7 ft. Wave Detail: NE 6 ft at 8 seconds and
SE 4 ft at 8 seconds. A chance of showers in the evening. A
chance of showers through the night.
.SAT THROUGH SUN NIGHT...NE winds 20 to 25 kt. Seas 5 to 8 ft.
Wave Detail: E 7 ft at 9 seconds and NE 3 ft at 5 seconds.

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.

$$

ANZ256-180900-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
404 PM EDT Tue Sep 17 2024

...SMALL CRAFT ADVISORY IN EFFECT FROM WEDNESDAY AFTERNOON
THROUGH THURSDAY MORNING...

.TONIGHT...E winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: SE
4 ft at 9 seconds and SE 1 foot at 13 seconds. Patchy fog. Vsby
1 NM or less.
.WED...E winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas 3 to 5 ft. Wave Detail: SE 4 ft at 8 seconds and SE 1 foot
at 12 seconds. Patchy fog in the morning. A chance of showers in
the afternoon. Vsby 1 NM or less in the morning.
.WED NIGHT...NE winds around 15 kt with gusts up to 20 kt. Seas
4 to 5 ft. Wave Detail: SE 5 ft at 8 seconds and NE 1 foot at
3 seconds. Patchy fog. A chance of showers.
.THU...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to
6 ft. Wave Detail: SE 5 ft at 8 seconds and NE 3 ft at 4 seconds.
A chance of showers.
.THU NIGHT THROUGH FRI NIGHT...NE winds 15 to 20 kt with gusts up
to 30 kt. Seas 5 to 7 ft. Wave Detail: NE 5 ft at 7 seconds and
SE 4 ft at 8 seconds. A chance of showers through the night. A
chance of showers through the night.
.SAT THROUGH SUN NIGHT...NE winds 20 to 25 kt with gusts up to
30 kt. Seas 5 to 8 ft. Wave Detail: E 7 ft at 9 seconds and NE
4 ft at 5 seconds.

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.

$$

ANZ232-180900-
Nantucket Sound-
404 PM EDT Tue Sep 17 2024

.TONIGHT...SE winds around 5 kt. Seas around 2 ft. Wave Detail: E
1 foot at 4 seconds and SE 1 foot at 8 seconds. Patchy fog. Vsby
1 NM or less.
.WED...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft
at 8 seconds and E 1 foot at 3 seconds. Patchy fog in the morning
with vsby 1 NM or less.
.WED NIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt after
midnight. Seas 2 to 3 ft. Wave Detail: E 2 ft at 3 seconds and SE
2 ft at 8 seconds. Patchy fog. A chance of showers in the
evening. Showers likely after midnight. Vsby 1 to 3 NM.
.THU...NE winds around 15 kt with gusts up to 20 kt. Seas 3 to
5 ft. Wave Detail: NE 2 ft at 4 seconds and SE 2 ft at 7 seconds.
A chance of showers. Patchy fog in the morning.
.THU NIGHT AND FRI...NE winds 15 to 20 kt with gusts up to 25 kt.
Seas 4 to 5 ft. Wave Detail: NE 3 ft at 4 seconds and E 3 ft at
8 seconds. A chance of showers in the evening. A chance of
showers in the afternoon.
.FRI NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas
3 to 5 ft. Wave Detail: E 4 ft at 8 seconds and NE 3 ft at
4 seconds.
.SAT AND SAT NIGHT...NE winds 20 to 25 kt with gusts up to 30 kt.
Seas 3 to 5 ft.
.SUN AND SUN NIGHT...NE winds 20 to 25 kt, diminishing to 15 to
20 kt. Seas 4 to 6 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.

$$

ANZ233-180900-
Vineyard Sound-
404 PM EDT Tue Sep 17 2024

.TONIGHT...SE winds around 5 kt. Seas 1 foot or less. Wave
Detail: SE 1 foot at 9 seconds and SE 1 foot at 13 seconds.
Patchy fog. Vsby 1 to 3 NM, decreasing to 1 NM or less after
midnight.
.WED...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft
at 8 seconds and E 1 foot at 2 seconds. Patchy fog in the
morning. A chance of showers in the afternoon. Vsby 1 NM or less
in the morning.
.WED NIGHT...NE winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail:
SE 2 ft at 8 seconds and E 1 foot at 2 seconds. Patchy fog. A
chance of showers.
.THU...NE winds around 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. Wave Detail: NE 2 ft at 3 seconds and SE 2 ft at 7 seconds.
A chance of showers.
.THU NIGHT AND FRI...NE winds 15 to 20 kt with gusts up to 30 kt.
Seas 3 to 4 ft. Wave Detail: E 3 ft at 8 seconds and NE 2 ft at
3 seconds. A chance of showers in the evening. A chance of
showers in the afternoon.
.FRI NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas
3 to 4 ft. Wave Detail: E 4 ft at 8 seconds and NE 2 ft at
4 seconds.
.SAT THROUGH SUN NIGHT...NE winds 15 to 20 kt with gusts up to
30 kt. Seas 3 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.

$$

ANZ234-180900-
Buzzards Bay-
404 PM EDT Tue Sep 17 2024

.TONIGHT...SE winds around 5 kt. Seas 1 foot or less. Wave
Detail: SE 1 foot at 9 seconds and SE 1 foot at 12 seconds.
Patchy fog. Vsby 1 to 3 NM, decreasing to 1 NM or less after
midnight.
.WED...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft
at 8 seconds and E 1 foot at 2 seconds. Patchy fog in the morning
with vsby 1 NM or less.
.WED NIGHT...NE winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail:
SE 2 ft at 8 seconds and E 1 foot at 2 seconds. A chance of
showers. Patchy fog in the evening.
.THU...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. Wave Detail: NE 2 ft at 3 seconds and SE 2 ft at 7 seconds.
A chance of showers.
.THU NIGHT...NE winds 10 to 15 kt with gusts up to 25 kt. Seas
3 to 4 ft. Wave Detail: NE 2 ft at 3 seconds and SE 2 ft at
9 seconds. A chance of showers in the evening.
.FRI AND FRI NIGHT...NE winds 15 to 20 kt with gusts up to 30 kt.
Seas 2 to 4 ft. Wave Detail: E 4 ft at 8 seconds and NE 2 ft at
3 seconds.
.SAT THROUGH SUN NIGHT...NE winds 15 to 20 kt with gusts up to
30 kt. Seas 3 to 5 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.

$$

ANZ235-180900-
Rhode Island Sound-
404 PM EDT Tue Sep 17 2024

.TONIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE
3 ft at 9 seconds. Patchy fog. Vsby 1 NM or less.
.WED...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft
at 8 seconds and E 1 foot at 2 seconds. Patchy fog in the
morning. A chance of showers in the afternoon. Vsby 1 NM or less
in the morning.
.WED NIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt after
midnight. Seas 2 to 4 ft. Wave Detail: SE 4 ft at 8 seconds and
NE 2 ft at 3 seconds. A chance of showers.
.THU...NE winds around 15 kt with gusts up to 20 kt. Seas 3 to
5 ft. Wave Detail: SE 4 ft at 8 seconds and NE 2 ft at 4 seconds.
A chance of showers.
.THU NIGHT...NE winds around 15 kt with gusts up to 25 kt. Seas
4 to 5 ft. Wave Detail: SE 4 ft at 8 seconds and NE 2 ft at
4 seconds. A chance of showers in the evening.
.FRI AND FRI NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt.
Seas 3 to 5 ft. Wave Detail: E 4 ft at 8 seconds and NE 3 ft at
4 seconds.
.SAT THROUGH SUN NIGHT...NE winds 15 to 20 kt with gusts up to
30 kt. Seas 4 to 5 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.

$$

ANZ237-180900-
Block Island Sound-
404 PM EDT Tue Sep 17 2024

.TONIGHT...SE winds 5 to 10 kt, becoming E after midnight. Seas
2 to 3 ft. Wave Detail: SE 3 ft at 9 seconds and SE 1 foot at
13 seconds. Patchy fog. Vsby 1 NM or less.
.WED...NE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft
at 8 seconds and NE 1 foot at 2 seconds. Patchy fog in the
morning. A chance of showers in the afternoon. Vsby 1 NM or less
in the morning.
.WED NIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt after
midnight. Seas 3 to 4 ft. Wave Detail: SE 4 ft at 8 seconds and
NE 1 foot at 2 seconds. A chance of showers.
.THU...NE winds around 15 kt with gusts up to 20 kt. Seas 3 to
5 ft. Wave Detail: SE 4 ft at 8 seconds and NE 2 ft at 3 seconds.
A chance of showers.
.THU NIGHT...NE winds 10 to 15 kt with gusts up to 25 kt. Seas
4 to 5 ft. Wave Detail: SE 4 ft at 9 seconds and NE 2 ft at
4 seconds. A chance of showers in the evening.
.FRI AND FRI NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt.
Seas 3 to 5 ft. Wave Detail: E 4 ft at 8 seconds and NE 3 ft at
5 seconds.
.SAT THROUGH SUN NIGHT...NE winds 15 to 20 kt with gusts up to
30 kt. Seas 4 to 5 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.

$$

ANZ230-180900-
Boston Harbor-
404 PM EDT Tue Sep 17 2024

.TONIGHT...S winds 5 to 10 kt. Waves 1 foot or less.
.WED...S winds around 5 kt, becoming E in the afternoon. Waves
1 foot or less. Patchy fog in the afternoon with vsby 1 to 3 NM.
.WED NIGHT...E winds 5 to 10 kt, becoming NE after midnight.
Waves 1 foot or less. Patchy fog. A chance of showers. Vsby 1 to
3 NM after midnight.
.THU...NE winds around 10 kt. Waves 1 foot or less, then 2 to
3 ft in the afternoon. A chance of showers. Patchy fog in the
morning with vsby 1 to 3 NM.
.THU NIGHT...NE winds 5 to 10 kt. Waves around 2 ft in the
evening, then 1 foot or less. At the outer harbor entrance, waves
2 to 4 ft. A chance of showers in the evening.
.FRI AND FRI NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt.
Waves 2 to 3 ft, except 4 to 6 ft at the outer harbor entrance.
.SAT THROUGH SUN NIGHT...NE winds 10 to 15 kt with gusts up to
20 kt. Waves 2 to 3 ft, except 4 to 6 ft at the outer harbor
entrance.

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.

$$

ANZ236-180900-
Narragansett Bay-
404 PM EDT Tue Sep 17 2024

.TONIGHT...S winds around 5 kt, becoming E around 5 kt after
midnight. Waves around 2 ft. Patchy fog. Vsby 1 to 3 NM,
decreasing to 1 NM or less after midnight.
.WED...E winds 5 to 10 kt. Waves 2 to 3 ft. Patchy fog in the
morning with vsby 1 NM or less.
.WED NIGHT...NE winds 5 to 10 kt. Waves 2 to 3 ft. A chance of
showers.
.THU...NE winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to
3 ft. A chance of showers.
.THU NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Waves
2 to 3 ft. A chance of showers in the evening.
.FRI AND FRI NIGHT...NE winds 10 to 15 kt with gusts up to 25 kt.
Waves 2 to 3 ft.
.SAT THROUGH SUN NIGHT...NE winds 10 to 15 kt with gusts up to
25 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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