804
FZUS51 KBOX 250804
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
404 AM EDT Wed Sep 25 2024

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

ANZ200-252100-
404 AM EDT Wed Sep 25 2024

.Synopsis for Massachusetts and Rhode Island coastal waters...
High pressure will keep E onshore flow today. Low pressure will
bring showers with embedded Thur. High pres builds back in for Fri
into the weekend.

$$

ANZ250-252100-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
404 AM EDT Wed Sep 25 2024

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY EVENING...

.TODAY...E winds 10 to 15 kt. Seas 5 to 6 ft. Wave Detail: E 6 ft
at 10 seconds.
.TONIGHT...SE winds around 10 kt. Seas 5 to 6 ft. Wave Detail: E
6 ft at 12 seconds.
.THU...SE winds 10 to 15 kt, becoming S 15 to 20 kt in the
afternoon. Seas 5 to 6 ft. Wave Detail: E 6 ft at 12 seconds and
S 2 ft at 4 seconds.
.THU NIGHT...S winds 10 to 15 kt with gusts up to 20 kt, becoming
SW after midnight. Seas 4 to 6 ft. Wave Detail: E 6 ft at
11 seconds and S 2 ft at 4 seconds. Showers likely, mainly in the
evening. Vsby 1 to 3 NM.
.FRI AND FRI NIGHT...N winds 5 to 10 kt. Seas 3 to 5 ft. Wave
Detail: E 5 ft at 11 seconds and N 1 foot at 3 seconds.
.SAT THROUGH SUN NIGHT...NE winds 5 to 10 kt. Seas 3 to 4 ft.
Wave Detail: E 3 ft at 10 seconds and N 2 ft at 4 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.

$$

ANZ251-252100-
Massachusetts Bay and Ipswich Bay-
404 AM EDT Wed Sep 25 2024

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY EVENING...

.TODAY...E winds around 10 kt. Seas 4 to 6 ft. Wave Detail: E
5 ft at 10 seconds.
.TONIGHT...SE winds around 10 kt. Seas 4 to 5 ft. Wave Detail: E
5 ft at 11 seconds.
.THU...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to
6 ft. Wave Detail: E 6 ft at 12 seconds and SE 2 ft at 3 seconds.
.THU NIGHT...SW winds 10 to 15 kt, becoming W after midnight.
Seas 3 to 5 ft. Wave Detail: E 5 ft at 11 seconds and S 2 ft at
4 seconds. Showers likely, mainly in the evening. Vsby 1 to 3 NM.
.FRI AND FRI NIGHT...N winds 5 to 10 kt. Seas 2 to 4 ft. Wave
Detail: E 4 ft at 11 seconds and N 1 foot at 2 seconds.
.SAT THROUGH SUN NIGHT...NE winds 5 to 10 kt. Seas 2 to 3 ft.
Wave Detail: E 3 ft at 10 seconds and NE 2 ft at 3 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.

$$

ANZ231-252100-
Cape Cod Bay-
404 AM EDT Wed Sep 25 2024

.TODAY...E winds around 10 kt. Seas 2 to 3 ft. Wave Detail: E
3 ft at 10 seconds and E 1 foot at 3 seconds.
.TONIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
3 ft at 11 seconds and E 1 foot at 2 seconds.
.THU...SE winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas 2 to 4 ft. Wave Detail: E 4 ft at 11 seconds and SE 2 ft at
3 seconds.
.THU NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 2 to 4 ft. Wave Detail: E 4 ft at 11 seconds and SE
2 ft at 3 seconds. A chance of showers. Vsby 1 to 3 NM.
.FRI...NW winds around 10 kt, becoming N in the afternoon. Seas
2 to 3 ft. Wave Detail: E 3 ft at 11 seconds and W 1 foot at
2 seconds. A chance of showers in the morning.
.FRI NIGHT...SE winds 5 to 10 kt, becoming N after midnight. Seas
around 2 ft. Wave Detail: E 2 ft at 10 seconds and N 1 foot at
3 seconds.
.SAT THROUGH SUN NIGHT...NE 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.

$$

ANZ254-252100-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
404 AM EDT Wed Sep 25 2024

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY EVENING...

.TODAY...E winds 10 to 15 kt. Gusts up to 20 kt this morning.
Seas 5 to 7 ft. Wave Detail: E 6 ft at 10 seconds.
.TONIGHT...E winds 5 to 10 kt. Seas 5 to 7 ft. Wave Detail: E
7 ft at 12 seconds.
.THU...SE winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas 5 to 7 ft. Wave Detail: E 7 ft at 12 seconds and S 1 foot at
3 seconds.
.THU NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 4 to 6 ft. Wave Detail: E 6 ft at 11 seconds and S
1 foot at 4 seconds. A chance of showers. Vsby 1 to 3 NM.
.FRI...NW winds around 10 kt. Seas 3 to 5 ft. Wave Detail: E 5 ft
at 11 seconds and SW 1 foot at 4 seconds. A chance of showers in
the morning.
.FRI NIGHT...NW winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E
4 ft at 10 seconds and SW 1 foot at 4 seconds.
.SAT THROUGH SUN NIGHT...NE winds 10 to 15 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.

$$

ANZ255-252100-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
404 AM EDT Wed Sep 25 2024

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY EVENING...

.TODAY...E winds 10 to 15 kt. Gusts up to 20 kt this morning.
Seas 4 to 6 ft. Wave Detail: E 5 ft at 10 seconds and E 1 foot at
3 seconds.
.TONIGHT...E winds around 10 kt. Seas 4 to 6 ft. Wave Detail: E
5 ft at 11 seconds.
.THU...SE winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas 4 to 6 ft. Wave Detail: E 6 ft at 12 seconds and S 1 foot at
4 seconds.
.THU NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 3 to 5 ft. Wave Detail: E 5 ft at 11 seconds and S
2 ft at 4 seconds. A chance of showers.
.FRI...W winds around 10 kt. Seas 3 to 5 ft. Wave Detail: E 4 ft
at 11 seconds and SW 2 ft at 4 seconds. A chance of showers in
the morning.
.FRI NIGHT...NW winds 5 to 10 kt, becoming N after midnight. Seas
2 to 4 ft. Wave Detail: E 4 ft at 10 seconds and SW 1 foot at
4 seconds.
.SAT THROUGH SUN NIGHT...NE winds 10 to 15 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.

$$

ANZ256-252100-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
404 AM EDT Wed Sep 25 2024

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY EVENING...

.TODAY...E winds 10 to 15 kt. Seas 4 to 5 ft. Wave Detail: E 5 ft
at 10 seconds.
.TONIGHT...E winds 10 to 15 kt. Seas 4 to 5 ft. Wave Detail: E
5 ft at 10 seconds.
.THU...SE winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas 4 to 5 ft. Wave Detail: E 5 ft at 12 seconds and S 1 foot at
4 seconds.
.THU NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 3 to 5 ft. Wave Detail: E 5 ft at 12 seconds and S
3 ft at 4 seconds. A chance of showers.
.FRI...W winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: E 4 ft at
11 seconds and SW 2 ft at 4 seconds. A chance of showers in the
morning.
.FRI NIGHT...W winds 5 to 10 kt, becoming NE after midnight. Seas
2 to 3 ft. Wave Detail: E 3 ft at 11 seconds and SW 1 foot at
4 seconds.
.SAT THROUGH SUN NIGHT...NE winds 10 to 15 kt with gusts up to
20 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.

$$

ANZ232-252100-
Nantucket Sound-
404 AM EDT Wed Sep 25 2024

.TODAY...E winds 10 to 15 kt. Seas 2 to 4 ft. Wave Detail: E 3 ft
at 10 seconds and E 2 ft at 3 seconds.
.TONIGHT...E winds around 10 kt. Seas 2 to 4 ft. Wave Detail: E
3 ft at 11 seconds and E 1 foot at 3 seconds.
.THU...SE winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas 2 to 4 ft. Wave Detail: E 3 ft at 12 seconds and SE 2 ft at
3 seconds.
.THU NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 2 to 4 ft. Wave Detail: E 3 ft at 12 seconds and S
2 ft at 4 seconds. A chance of showers in the evening, then
showers likely after midnight. Vsby 1 to 3 NM.
.FRI...W winds around 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft
at 11 seconds and SW 2 ft at 3 seconds. A chance of showers in
the morning.
.FRI NIGHT...SW winds 5 to 10 kt, becoming N after midnight. Seas
around 2 ft. Wave Detail: E 2 ft at 11 seconds and N 1 foot at
2 seconds.
.SAT THROUGH SUN NIGHT...NE winds 10 to 15 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.

$$

ANZ233-252100-
Vineyard Sound-
404 AM EDT Wed Sep 25 2024

.TODAY...E winds around 10 kt. Seas around 2 ft. Wave Detail: E
2 ft at 10 seconds and SE 1 foot at 3 seconds.
.TONIGHT...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E
2 ft at 11 seconds and E 1 foot at 2 seconds.
.THU...SE winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas 2 to 3 ft. Wave Detail: SE 2 ft at 3 seconds and SE 2 ft at
11 seconds.
.THU NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 4 seconds and E
2 ft at 11 seconds. A chance of showers in the evening, then
showers likely after midnight. Vsby 1 to 3 NM.
.FRI...W winds 5 to 10 kt. Seas around 2 ft in the morning, then
1 foot or less. Wave Detail: SW 2 ft at 4 seconds and E 2 ft at
11 seconds, becoming SW 1 foot at 4 seconds and E 1 foot at
10 seconds. A chance of showers in the morning.
.FRI NIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas
1 foot or less. Wave Detail: N 1 foot at 2 seconds and SW 1 foot
at 4 seconds.
.SAT THROUGH SUN NIGHT...NE 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.

$$

ANZ234-252100-
Buzzards Bay-
404 AM EDT Wed Sep 25 2024

.TODAY...E winds around 10 kt. Seas 2 to 3 ft. Wave Detail: E
2 ft at 10 seconds and E 1 foot at 2 seconds.
.TONIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
2 ft at 11 seconds and E 1 foot at 2 seconds.
.THU...SE winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas 2 to 3 ft. Wave Detail: E 3 ft at 11 seconds and SE 2 ft at
3 seconds.
.THU NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 2 to 3 ft. Wave Detail: S 2 ft at 4 seconds and E
2 ft at 12 seconds. A chance of showers in the evening, then
showers likely after midnight. Vsby 1 to 3 NM.
.FRI...W winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft
at 11 seconds and W 1 foot at 4 seconds.
.FRI NIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas
around 2 ft in the evening, then 1 foot or less. Wave Detail: E
2 ft at 10 seconds and SW 1 foot at 4 seconds, becoming N 1 foot
at 2 seconds and W 1 foot at 4 seconds.
.SAT THROUGH SUN NIGHT...NE winds 10 to 15 kt with gusts up to
20 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.

$$

ANZ235-252100-
Rhode Island Sound-
404 AM EDT Wed Sep 25 2024

.TODAY...E winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: SE
4 ft at 10 seconds and E 1 foot at 3 seconds.
.TONIGHT...SE winds 10 to 15 kt. Seas around 3 ft. Wave Detail:
SE 3 ft at 10 seconds and E 1 foot at 3 seconds.
.THU...SE winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas 2 to 3 ft. Wave Detail: SE 3 ft at 4 seconds and SE 3 ft at
12 seconds.
.THU NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 2 to 3 ft. Wave Detail: S 3 ft at 5 seconds and SE
3 ft at 12 seconds. A chance of showers in the evening, then
showers likely after midnight. Vsby 1 to 3 NM.
.FRI...NW winds around 10 kt, becoming SW in the afternoon. Seas
2 to 3 ft. Wave Detail: SE 3 ft at 11 seconds and SW 2 ft at
5 seconds.
.FRI NIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas
around 2 ft. Wave Detail: SE 2 ft at 11 seconds and N 1 foot at
2 seconds.
.SAT THROUGH SUN NIGHT...NE winds 10 to 15 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.

$$

ANZ237-252100-
Block Island Sound-
404 AM EDT Wed Sep 25 2024

.TODAY...E winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft
at 10 seconds and NE 1 foot at 3 seconds.
.TONIGHT...E winds 10 to 15 kt. Seas around 3 ft. Wave Detail: E
3 ft at 10 seconds and NE 1 foot at 3 seconds.
.THU...SE winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas around 3 ft. Wave Detail: SE 3 ft at 12 seconds and S 2 ft
at 4 seconds.
.THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt,
becoming W 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave
Detail: SE 3 ft at 12 seconds and S 2 ft at 4 seconds. A chance
of showers.
.FRI...NW winds 5 to 10 kt, becoming W in the afternoon. Seas
2 to 3 ft. Wave Detail: SE 3 ft at 11 seconds and SW 1 foot at
4 seconds.
.FRI NIGHT...W winds around 5 kt, becoming NE after midnight.
Seas around 2 ft. Wave Detail: SE 2 ft at 11 seconds and SW
1 foot at 4 seconds.
.SAT THROUGH SUN NIGHT...NE winds 10 to 15 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.

$$

ANZ230-252100-
Boston Harbor-
404 AM EDT Wed Sep 25 2024

.TODAY...E winds around 10 kt. Waves 1 foot or less, except 2 to
4 ft at the outer harbor entrance.
.TONIGHT...SE winds 5 to 10 kt. Waves 1 foot or less, except 2 to
4 ft at the outer harbor entrance.
.THU...SE winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Waves 2 to 3 ft. A chance of showers.
.THU NIGHT...SW 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. Showers likely, mainly in the evening with vsby 1 to
3 NM.
.FRI AND FRI NIGHT...N winds 5 to 10 kt. Waves 1 foot or less,
except 2 to 4 ft at the outer harbor entrance.
.SAT THROUGH SUN NIGHT...N 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.

$$

ANZ236-252100-
Narragansett Bay-
404 AM EDT Wed Sep 25 2024

.TODAY...E winds 5 to 10 kt. Waves 2 to 3 ft.
.TONIGHT...SE winds 5 to 10 kt. Waves 2 to 3 ft.
.THU...SE winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up
to 20 kt in the afternoon. Waves 2 to 3 ft.
.THU NIGHT...SW winds 10 to 15 kt, diminishing to 5 to 10 kt
after midnight. Waves 2 to 3 ft. A chance of showers. Vsby 1 to
3 NM in the evening.
.FRI...NW winds 5 to 10 kt, becoming W in the afternoon. Waves
2 to 3 ft.
.FRI NIGHT...W winds around 5 kt, becoming N after midnight.
Waves around 2 ft.
.SAT THROUGH SUN NIGHT...NE winds 5 to 10 kt. Waves 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.

$$

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