469
FZUS51 KBOX 250504
CWFBOX

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

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

ANZ200-251800-
103 AM EDT Wed Sep 25 2024

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

$$

ANZ250-251800-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
103 AM EDT Wed Sep 25 2024

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

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

$$

ANZ251-251800-
Massachusetts Bay and Ipswich Bay-
103 AM EDT Wed Sep 25 2024

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

.REST OF TONIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. Wave
Detail: E 5 ft at 10 seconds.
.WED...E winds around 10 kt. Seas 4 to 6 ft. Wave Detail: E 5 ft
at 10 seconds.
.WED NIGHT...SE winds around 10 kt. Seas 4 to 5 ft. Wave Detail:
E 5 ft at 12 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 S 1 foot at
3 seconds. Patchy fog. A chance of showers.
.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 1 foot at
3 seconds. A chance of showers. Patchy fog in the evening with
vsby 1 to 3 NM.
.FRI AND FRI NIGHT...NE winds 5 to 10 kt with gusts up to 20 kt.
Seas 2 to 4 ft. Wave Detail: E 4 ft at 11 seconds and N 1 foot at
3 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.

$$

ANZ231-251800-
Cape Cod Bay-
103 AM EDT Wed Sep 25 2024

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

$$

ANZ254-251800-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
103 AM EDT Wed Sep 25 2024

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

.REST OF TONIGHT...E winds 10 to 15 kt. Seas 6 to 7 ft. Wave
Detail: E 7 ft at 10 seconds.
.WED...E winds 10 to 15 kt. Gusts up to 20 kt in the morning.
Seas 5 to 7 ft. Wave Detail: E 7 ft at 10 seconds.
.WED NIGHT...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.
.THU NIGHT...S winds 10 to 15 kt, becoming W after midnight.
Gusts up to 20 kt. Seas 4 to 6 ft. Wave Detail: E 6 ft at
11 seconds and S 1 foot at 3 seconds. A chance of showers.
.FRI...NW winds around 10 kt with gusts up to 20 kt. Seas 4 to
5 ft. Wave Detail: E 5 ft at 11 seconds and SW 2 ft at 5 seconds.
A chance of showers in the morning.
.FRI NIGHT...N winds 10 to 15 kt. Gusts up to 20 kt after
midnight. Seas 3 to 4 ft.
.SAT THROUGH SUN...NE winds 10 to 15 kt with gusts up to 20 kt.
Seas 3 to 5 ft.
.SUN NIGHT...NE winds 5 to 10 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.

$$

ANZ255-251800-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
103 AM EDT Wed Sep 25 2024

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

.REST OF TONIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. Wave
Detail: E 6 ft at 10 seconds.
.WED...E winds 10 to 15 kt. Gusts up to 20 kt in the morning.
Seas 4 to 6 ft. Wave Detail: E 5 ft at 10 seconds.
.WED NIGHT...E winds around 10 kt. Seas 4 to 6 ft. Wave Detail: E
6 ft at 12 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.
.THU NIGHT...S winds 10 to 15 kt with gusts up to 20 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. A chance of showers.
.FRI...NW winds around 10 kt. Seas 3 to 5 ft. Wave Detail: E 4 ft
at 11 seconds and SW 2 ft at 5 seconds. A chance of showers in
the morning.
.FRI NIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt after
midnight. Seas 2 to 4 ft.
.SAT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft.
.SAT NIGHT THROUGH SUN NIGHT...NE winds 10 to 15 kt with gusts up
to 20 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.

$$

ANZ256-251800-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
103 AM EDT Wed Sep 25 2024

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

.REST OF TONIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. Wave
Detail: E 5 ft at 10 seconds.
.WED...E winds 10 to 15 kt. Seas 4 to 5 ft. Wave Detail: E 5 ft
at 10 seconds.
.WED NIGHT...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 with gusts up to 20 kt,
becoming W after midnight. Seas 3 to 5 ft. Wave Detail: E 5 ft at
12 seconds and S 2 ft at 5 seconds. A chance of showers.
.FRI...NW winds around 10 kt. Seas 2 to 4 ft. Wave Detail: E 4 ft
at 11 seconds and SW 2 ft at 5 seconds. A chance of showers in
the morning.
.FRI NIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt after
midnight. Seas 2 to 3 ft.
.SAT THROUGH SUN NIGHT...NE winds 10 to 15 kt with gusts up to
25 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.

$$

ANZ232-251800-
Nantucket Sound-
103 AM EDT Wed Sep 25 2024

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

$$

ANZ233-251800-
Vineyard Sound-
103 AM EDT Wed Sep 25 2024

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

$$

ANZ234-251800-
Buzzards Bay-
103 AM EDT Wed Sep 25 2024

.REST OF TONIGHT...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.
.WED...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.
.WED NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
2 ft at 10 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 1 foot
at 2 seconds.
.THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt,
becoming W after midnight. Seas 2 to 3 ft. Wave Detail: E 2 ft at
12 seconds and SW 1 foot at 3 seconds. A chance of showers.
.FRI...N winds around 10 kt. Gusts up to 20 kt in the afternoon.
Seas around 2 ft. Wave Detail: E 2 ft at 11 seconds and NW 1 foot
at 3 seconds. A chance of showers in the morning.
.FRI NIGHT...NE winds 5 to 10 kt. Seas around 2 ft.
.SAT THROUGH SUN NIGHT...NE winds 10 to 15 kt with gusts up to
25 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.

$$

ANZ235-251800-
Rhode Island Sound-
103 AM EDT Wed Sep 25 2024

.REST OF TONIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. Wave
Detail: SE 4 ft at 10 seconds and NE 1 foot at 3 seconds.
.WED...E winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: SE 3 ft
at 10 seconds and NE 1 foot at 2 seconds.
.WED NIGHT...SE winds 10 to 15 kt. Seas around 3 ft. Wave Detail:
SE 3 ft at 10 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 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 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 around 10 kt. Seas 2 to 3 ft. Wave Detail: SE
3 ft at 11 seconds and SW 2 ft at 5 seconds. A chance of showers
in the morning.
.FRI NIGHT...NE winds 10 to 15 kt. Seas around 2 ft.
.SAT THROUGH SUN NIGHT...NE winds 10 to 15 kt with gusts up to
20 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.

$$

ANZ237-251800-
Block Island Sound-
103 AM EDT Wed Sep 25 2024

.REST OF TONIGHT...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.
.WED...E winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft
at 10 seconds.
.WED NIGHT...E winds 10 to 15 kt. Seas around 3 ft. Wave Detail:
E 3 ft at 10 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 12 seconds. A chance of
showers in the morning.
.THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt,
becoming NW after midnight. Seas 2 to 3 ft. Wave Detail: SE 3 ft
at 12 seconds and SW 2 ft at 5 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 2 ft at
5 seconds. A chance of showers in the morning.
.FRI NIGHT...E winds 5 to 10 kt. Seas around 2 ft.
.SAT THROUGH SUN NIGHT...NE winds 10 to 15 kt with gusts up to
20 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.

$$

ANZ230-251800-
Boston Harbor-
103 AM EDT Wed Sep 25 2024

.REST OF TONIGHT...E winds around 10 kt. Waves 1 foot or less,
except 2 to 4 ft at the outer harbor entrance.
.WED...E winds around 10 kt. Waves 1 foot or less, except 2 to
4 ft at the outer harbor entrance.
.WED NIGHT...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, except 3 to 5 ft at the outer harbor entrance.
Patchy fog. A chance of showers.
.THU NIGHT...SW winds 5 to 10 kt, becoming W after midnight.
Waves around 2 ft. Showers likely, mainly in the evening. Patchy
fog in the evening.
.FRI AND FRI NIGHT...N winds 5 to 10 kt. Waves 2 to 3 ft.
.SAT THROUGH SUN NIGHT...NE winds 5 to 10 kt with gusts up to
20 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.

$$

ANZ236-251800-
Narragansett Bay-
103 AM EDT Wed Sep 25 2024

.REST OF TONIGHT...NE winds 5 to 10 kt. Waves 2 to 3 ft.
.WED...E winds 5 to 10 kt. Waves 2 to 3 ft.
.WED NIGHT...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. A chance of showers.
.THU NIGHT...SW winds 10 to 15 kt, becoming W 5 to 10 kt after
midnight. Waves 2 to 3 ft. A chance of showers.
.FRI...N winds 5 to 10 kt. Waves around 2 ft. A chance of showers
in the morning.
.FRI NIGHT...NE winds 5 to 10 kt. Waves around 2 ft.
.SAT THROUGH SUN NIGHT...NE winds 10 to 15 kt with gusts up to
20 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.

$$

For the latest updates...please visit our webpage at
www.weather.gov/boston

You can follow us on Facebook at
www.facebook.com/NWSBoston

You can follow us on Twitter at
@NWSBoston