Coastal Waters Forecast
Issued by NWS Boston, MA

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FZUS51 KBOX 172302
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
701 PM EDT Wed Apr 17 2024

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

ANZ200-181200-
701 PM EDT Wed Apr 17 2024

.Synopsis for Massachusetts and Rhode Island coastal waters...
High pres shifts into the Gulf of ME this evening. A warm front
lifts toward the southern waters on Thu, while high pres remains
planted over the Gulf of ME/Nova Scotia. The high nudges back in for
much of Fri before a cold front sweeps through late Fri into Sat.

$$

ANZ250-181200-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
701 PM EDT Wed Apr 17 2024

.TONIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE
2 ft at 8 seconds and N 1 ft at 4 seconds.
.THU...E winds around 10 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft
at 4 seconds and SE 2 ft at 8 seconds.
.THU NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
2 ft at 4 seconds and E 2 ft at 12 seconds.
.FRI...E winds 5 to 10 kt, becoming SE 10 to 15 kt in the
afternoon. Seas 2 to 3 ft. Wave Detail: E 2 ft at 5 seconds and E
2 ft at 11 seconds.
.FRI NIGHT AND SAT...SW winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 4 ft. Wave Detail: S 3 ft at 4 seconds and E 2 ft at
11 seconds. A chance of showers.
.SAT NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas
2 to 4 ft. Wave Detail: W 3 ft at 4 seconds and SE 2 ft at
5 seconds.
.SUN THROUGH MON...SW winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 4 ft.
.MON NIGHT...S winds around 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.

$$

ANZ251-181200-
Massachusetts Bay and Ipswich Bay-
701 PM EDT Wed Apr 17 2024

.TONIGHT...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E
2 ft at 3 seconds and E 2 ft at 9 seconds.
.THU...E winds around 10 kt. Seas around 2 ft. Wave Detail: E
2 ft at 4 seconds and E 2 ft at 8 seconds.
.THU NIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E
2 ft at 4 seconds and SE 1 ft at 8 seconds.
.FRI...E winds 5 to 10 kt, becoming SE 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: SE 2 ft
at 5 seconds and E 1 ft at 11 seconds.
.FRI NIGHT AND SAT...SW winds 15 to 20 kt. Seas 2 to 3 ft. Wave
Detail: S 3 ft at 4 seconds and SE 2 ft at 4 seconds. A chance of
showers.
.SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
around 2 ft. Wave Detail: W 2 ft at 3 seconds and SE 1 ft at
5 seconds.
.SUN THROUGH MON NIGHT...S 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.

$$

ANZ231-181200-
Cape Cod Bay-
701 PM EDT Wed Apr 17 2024

.TONIGHT...SE winds 5 to 10 kt. Seas around 2 ft this evening,
then 1 foot or less. Wave Detail: N 1 ft at 3 seconds and E 1 ft
at 3 seconds, becoming NW 1 ft at 3 seconds and E 1 ft at
4 seconds.
.THU...E winds around 10 kt. Seas 1 foot or less, then around
2 ft in the afternoon. Wave Detail: E 1 ft at 3 seconds and SE
1 ft at 8 seconds, becoming E 1 ft at 2 seconds and SE 1 ft at
7 seconds.
.THU NIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E
1 ft at 3 seconds and SE 1 ft at 7 seconds.
.FRI...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE
2 ft at 6 seconds and E 1 ft at 3 seconds.
.FRI NIGHT AND SAT...SW winds around 10 kt. Seas around 2 ft.
Wave Detail: S 2 ft at 4 seconds and SE 1 ft at 3 seconds. A
chance of showers through the day.
.SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
around 2 ft. Wave Detail: W 2 ft at 3 seconds and SE 1 ft at
6 seconds.
.SUN THROUGH MON NIGHT...S 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.

$$

ANZ254-181200-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
701 PM EDT Wed Apr 17 2024

.TONIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE
3 ft at 8 seconds and N 1 ft at 4 seconds.
.THU...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Wave Detail: E 2 ft at 3 seconds and SE 2 ft at 7 seconds.
.THU NIGHT...E winds 10 to 15 kt, diminishing to 5 to 10 kt after
midnight. Seas 2 to 4 ft. Wave Detail: E 2 ft at 4 seconds and S
2 ft at 7 seconds.
.FRI...E winds around 10 kt. Seas 3 to 4 ft. Wave Detail: E 2 ft
at 5 seconds and E 2 ft at 11 seconds.
.FRI NIGHT...S winds around 10 kt. Seas around 3 ft. Wave Detail:
SE 3 ft at 5 seconds and E 2 ft at 11 seconds.
.SAT...SW winds around 10 kt. Seas around 3 ft. Wave Detail: S
3 ft at 4 seconds and E 2 ft at 11 seconds. A chance of showers.
.SAT NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas
3 to 4 ft.
.SUN THROUGH MON...W winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 4 ft.
.MON NIGHT...S winds around 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.

$$

ANZ255-181200-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
701 PM EDT Wed Apr 17 2024

.TONIGHT...E winds 10 to 15 kt. Gusts up to 20 kt after midnight.
Seas 2 to 3 ft. Wave Detail: S 3 ft at 7 seconds and E 1 ft at
3 seconds. A slight chance of showers.
.THU...E winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
4 ft. Wave Detail: E 3 ft at 3 seconds and SE 2 ft at 7 seconds.
.THU NIGHT...E winds around 15 kt with gusts up to 20 kt. Seas
3 to 4 ft. Wave Detail: SE 3 ft at 5 seconds and SE 1 ft at
12 seconds.
.FRI...E winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft
at 7 seconds and E 1 ft at 4 seconds.
.FRI NIGHT...SE winds 10 to 15 kt. Seas 2 to 4 ft. Wave Detail:
SE 4 ft at 7 seconds and E 1 ft at 4 seconds.
.SAT...SW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas 2 to 3 ft. Wave Detail: SE 3 ft at 6 seconds and W 2 ft at
4 seconds. A chance of showers.
.SAT NIGHT...W winds around 15 kt with gusts up to 20 kt. Seas
2 to 4 ft.
.SUN THROUGH MON NIGHT...S 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.

$$

ANZ256-181200-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
701 PM EDT Wed Apr 17 2024

...SMALL CRAFT ADVISORY IN EFFECT FROM 5 AM EDT THURSDAY THROUGH
THURSDAY EVENING...

.TONIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Wave Detail: SE 3 ft at 8 seconds and SE 2 ft at 3 seconds.
A chance of showers this evening, then showers likely after
midnight. Patchy fog after midnight.
.THU...E winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
4 ft. Wave Detail: SE 4 ft at 5 seconds and SE 1 ft at
14 seconds. A chance of showers in the morning.
.THU NIGHT...E winds around 15 kt with gusts up to 20 kt. Seas
3 to 5 ft. Wave Detail: E 4 ft at 6 seconds and SE 1 ft at
12 seconds.
.FRI...E winds 10 to 15 kt. Seas 3 to 5 ft. Wave Detail: SE 4 ft
at 7 seconds and NE 1 ft at 3 seconds.
.FRI NIGHT AND SAT...SW winds 10 to 15 kt with gusts up to 20 kt.
Seas 3 to 4 ft. Wave Detail: SE 4 ft at 7 seconds and W 2 ft at
4 seconds. A chance of showers through the day.
.SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
around 3 ft. Wave Detail: W 3 ft at 4 seconds and SE 3 ft at
7 seconds.
.SUN THROUGH MON NIGHT...S 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.

$$

ANZ232-181200-
Nantucket Sound-
701 PM EDT Wed Apr 17 2024

.TONIGHT...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E
1 ft at 2 seconds and N 1 ft at 3 seconds.
.THU...E winds 10 to 15 kt with gusts up to 20 kt. Seas around
2 ft. Wave Detail: E 2 ft at 3 seconds and SE 1 ft at 7 seconds.
.THU NIGHT...E winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas around 2 ft. Wave Detail: E 2 ft at 3 seconds and S
1 ft at 6 seconds.
.FRI...E winds around 10 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft
at 5 seconds and E 1 ft at 12 seconds.
.FRI NIGHT...S winds around 10 kt. Seas around 2 ft. Wave Detail:
E 2 ft at 4 seconds and S 2 ft at 4 seconds. A chance of showers
after midnight.
.SAT...SW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and E 1 ft at
5 seconds. A chance of showers in the morning.
.SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
around 2 ft.
.SUN THROUGH MON NIGHT...SW 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.

$$

ANZ233-181200-
Vineyard Sound-
701 PM EDT Wed Apr 17 2024

.TONIGHT...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E
1 ft at 3 seconds and S 1 ft at 7 seconds. A slight chance of
showers.
.THU...E winds 10 to 15 kt with gusts up to 20 kt. Seas around
2 ft. Wave Detail: E 2 ft at 3 seconds and SE 2 ft at 6 seconds.
.THU NIGHT...E winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 2 to 3 ft. Wave Detail: E 2 ft at 3 seconds and SE
2 ft at 6 seconds.
.FRI...E winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft
at 7 seconds and E 1 ft at 2 seconds.
.FRI NIGHT AND SAT...SW winds 10 to 15 kt with gusts up to 20 kt.
Seas around 2 ft. Wave Detail: S 2 ft at 5 seconds and SE 1 ft at
3 seconds. A chance of showers through the day.
.SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
around 2 ft. Wave Detail: W 2 ft at 4 seconds and S 2 ft at
7 seconds.
.SUN THROUGH MON NIGHT...SW 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.

$$

ANZ234-181200-
Buzzards Bay-
701 PM EDT Wed Apr 17 2024

.TONIGHT...SE winds 5 to 10 kt. Seas around 2 ft this evening,
then 1 foot or less. Wave Detail: E 1 ft at 2 seconds and SW 1 ft
at 2 seconds, becoming E 1 ft at 2 seconds and S 1 ft at
7 seconds. A slight chance of showers after midnight.
.THU...E winds 10 to 15 kt with gusts up to 20 kt. Seas around
2 ft. Wave Detail: E 2 ft at 3 seconds and S 1 ft at 7 seconds.
.THU NIGHT...E winds 10 to 15 kt, diminishing to 5 to 10 kt after
midnight. Seas around 2 ft. Wave Detail: E 2 ft at 3 seconds and
SE 2 ft at 6 seconds.
.FRI...E winds 5 to 10 kt, becoming SE 10 to 15 kt in the
afternoon. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds
and E 1 ft at 2 seconds.
.FRI NIGHT AND SAT...SW winds 10 to 15 kt with gusts up to 20 kt.
Seas around 2 ft. Wave Detail: S 2 ft at 4 seconds and SE 1 ft at
3 seconds. A chance of showers through the day.
.SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
around 2 ft. Wave Detail: SW 2 ft at 5 seconds and E 1 ft at
5 seconds.
.SUN THROUGH MON NIGHT...SW 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.

$$

ANZ235-181200-
Rhode Island Sound-
701 PM EDT Wed Apr 17 2024

.TONIGHT...SE winds 10 to 15 kt. Gusts up to 20 kt after
midnight. Seas 2 to 3 ft. Wave Detail: S 3 ft at 8 seconds and SE
1 ft at 3 seconds. A chance of showers.
.THU...E winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
3 ft. Wave Detail: SE 3 ft at 5 seconds and SE 1 ft at
14 seconds. A chance of showers in the morning.
.THU NIGHT...E winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 2 to 4 ft. Wave Detail: SE 4 ft at 7 seconds and E
2 ft at 4 seconds.
.FRI...E winds 10 to 15 kt. Seas 2 to 4 ft. Wave Detail: SE 3 ft
at 7 seconds and NE 1 ft at 3 seconds.
.FRI NIGHT AND SAT...SW winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds and SW 2 ft at
4 seconds. A chance of showers through the day.
.SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft. Wave Detail: W 3 ft at 4 seconds and SE 2 ft at
7 seconds.
.SUN THROUGH MON NIGHT...SW 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.

$$

ANZ237-181200-
Block Island Sound-
701 PM EDT Wed Apr 17 2024

...SMALL CRAFT ADVISORY IN EFFECT FROM 5 AM EDT THURSDAY THROUGH
THURSDAY AFTERNOON...

.TONIGHT...SE winds 10 to 15 kt. Gusts up to 20 kt after
midnight. Seas around 2 ft. Wave Detail: S 2 ft at 8 seconds and
SE 1 ft at 3 seconds. Showers likely. Patchy fog after midnight.
.THU...E winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
3 ft. Wave Detail: E 3 ft at 4 seconds and SE 3 ft at 7 seconds.
A chance of showers.
.THU NIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 2 to 4 ft. Wave Detail: E 4 ft at 6 seconds and SE
1 ft at 13 seconds. A chance of showers in the evening.
.FRI...E winds 10 to 15 kt. Seas 2 to 4 ft. Wave Detail: SE 4 ft
at 7 seconds and E 1 ft at 4 seconds.
.FRI NIGHT AND SAT...SW winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds and W 2 ft at
3 seconds. A chance of showers through the day.
.SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft. Wave Detail: W 2 ft at 4 seconds and SE 2 ft at
7 seconds.
.SUN THROUGH MON NIGHT...SW 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.

$$

ANZ230-181200-
Boston Harbor-
701 PM EDT Wed Apr 17 2024

.TONIGHT...SE winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. Waves 1 foot or less.
.THU...E winds 10 to 15 kt. Waves 1 foot or less.
.THU NIGHT...E winds 5 to 10 kt. Waves 1 foot or less.
.FRI...E winds 5 to 10 kt, becoming SE 15 to 20 kt in the
afternoon. Waves 1 foot or less, then around 2 ft in the
afternoon.
.FRI NIGHT AND SAT...W winds 15 to 20 kt. Waves around 2 ft. A
chance of showers.
.SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Waves
around 2 ft.
.SUN THROUGH MON NIGHT...SW 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.

$$

ANZ236-181200-
Narragansett Bay-
701 PM EDT Wed Apr 17 2024

.TONIGHT...SE winds 5 to 10 kt. Waves around 2 ft. A chance of
showers.
.THU...E winds 10 to 15 kt with gusts up to 20 kt. Waves around
2 ft.
.THU NIGHT...NE winds 5 to 10 kt. Waves around 2 ft. A chance of
showers in the evening.
.FRI...E winds 5 to 10 kt, becoming SE 10 to 15 kt with gusts up
to 20 kt in the afternoon. Waves 2 to 3 ft.
.FRI NIGHT AND SAT...SW winds 10 to 15 kt with gusts up to 20 kt.
Waves 2 to 3 ft. A chance of showers through the day.
.SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Waves
around 2 ft.
.SUN THROUGH MON NIGHT...SW 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.

$$

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