640
FZUS51 KBOX 140206
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
1005 PM EDT Fri Jun 13 2025

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

ANZ200-141500-
1005 PM EDT Fri Jun 13 2025

.Synopsis for Massachusetts and Rhode Island coastal waters...
High pres remains E of New England. Weak low pres will track S of
the waters Sat followed by high pres from the Maritimes building
into the ern MA waters Sun. This high will move offshore Mon then
another low pres will track S of the waters Tue. Weak high pres
builds into the waters Wed.

$$

ANZ250-141500-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
1005 PM EDT Fri Jun 13 2025

.OVERNIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
SE 1 foot at 3 seconds and N 1 foot at 4 seconds. A chance of
showers.
.SAT...E winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas around 2 ft. Wave Detail: SE 2 ft at 4 seconds and SE 2 ft
at 9 seconds. Showers likely, mainly in the morning. Patchy fog
in the morning.
.SAT NIGHT...E winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 2 to 3 ft. Wave Detail: E 3 ft at 5 seconds.
.SUN...E winds around 10 kt. Seas 2 to 4 ft. Wave Detail: E 3 ft
at 5 seconds.
.SUN NIGHT THROUGH MON NIGHT...SE winds 5 to 10 kt. Seas 2 to
4 ft. Wave Detail: SE 4 ft at 8 seconds.
.TUE THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to
25 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 6 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.

$$

ANZ251-141500-
Massachusetts Bay and Ipswich Bay-
1005 PM EDT Fri Jun 13 2025

.OVERNIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
SE 1 foot at 4 seconds and NE 1 foot at 4 seconds. A chance of
showers.
.SAT...E winds 10 to 15 kt with gusts up to 20 kt. Seas around
2 ft. Wave Detail: SE 2 ft at 5 seconds and SE 1 foot at
8 seconds. Showers likely, mainly in the morning. Patchy fog in
the morning.
.SAT 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 4 seconds and E
2 ft at 9 seconds.
.SUN...E winds around 10 kt. Seas around 2 ft. Wave Detail: E
2 ft at 5 seconds.
.SUN NIGHT THROUGH MON NIGHT...S winds 5 to 10 kt. Seas 2 to
3 ft. Wave Detail: E 3 ft at 7 seconds and E 1 foot at 4 seconds.
.TUE THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to
20 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 7 seconds and S
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.

$$

ANZ231-141500-
Cape Cod Bay-
1005 PM EDT Fri Jun 13 2025

.OVERNIGHT...SE winds 5 to 10 kt. Seas 1 foot or less. Wave
Detail: N 1 foot at 3 seconds and SE 1 foot at 4 seconds. A
chance of showers.
.SAT...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 6 seconds.
Showers likely, mainly in the morning.
.SAT 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 4 seconds.
.SUN...E winds around 10 kt. Seas around 2 ft. Wave Detail: SE
2 ft at 7 seconds and NE 1 foot at 3 seconds.
.SUN NIGHT THROUGH MON NIGHT...SE winds 5 to 10 kt. Seas around
2 ft. Wave Detail: SE 2 ft at 6 seconds and E 1 foot at
3 seconds.
.TUE THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to
20 kt. Seas 2 to 3 ft. Wave Detail: SE 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.

$$

ANZ254-141500-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
1005 PM EDT Fri Jun 13 2025

.OVERNIGHT...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
SE 2 ft at 7 seconds and NW 1 foot at 4 seconds. A slight chance
of showers.
.SAT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Wave Detail: E 3 ft at 5 seconds. Showers likely, mainly in
the morning. Patchy fog in the morning.
.SAT NIGHT...E winds 15 to 20 kt, becoming NE 10 to 15 kt after
midnight. Seas 2 to 4 ft. Wave Detail: E 4 ft at 5 seconds.
.SUN...E winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
4 ft. Wave Detail: E 4 ft at 5 seconds.
.SUN NIGHT THROUGH MON NIGHT...SE winds 5 to 10 kt. Seas 2 to
4 ft. Wave Detail: SE 4 ft at 7 seconds.
.TUE THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to
20 kt. Seas 2 to 4 ft. Wave Detail: SE 3 ft at 7 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.

$$

ANZ255-141500-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
1005 PM EDT Fri Jun 13 2025

.OVERNIGHT...SE winds 10 to 15 kt. Seas around 2 ft. Wave Detail:
SE 2 ft at 6 seconds and NE 1 foot at 3 seconds. A slight chance
of showers.
.SAT...E winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. Gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: SE
3 ft at 5 seconds and SE 3 ft at 9 seconds. Showers likely.
Patchy fog in the morning. Vsby 1 to 3 NM.
.SAT NIGHT...E winds 15 to 20 kt with gusts up to 25 kt. Seas
3 to 4 ft. Wave Detail: E 4 ft at 6 seconds. A chance of showers
in the evening.
.SUN...E 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 NE 1 foot at
4 seconds.
.SUN NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: SE
4 ft at 7 seconds and NE 1 foot at 3 seconds.
.MON...E winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas 3 to 4 ft. Wave Detail: E 4 ft at 8 seconds and S 2 ft at
7 seconds. A chance of showers in the afternoon.
.MON NIGHT...E winds 10 to 15 kt. Seas 2 to 3 ft.
.TUE THROUGH WED NIGHT...SW 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.

$$

ANZ256-141500-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
1005 PM EDT Fri Jun 13 2025

.OVERNIGHT...SE winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail:
SE 2 ft at 6 seconds and E 1 foot at 3 seconds. A slight chance
of showers.
.SAT...E winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. Gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft
at 4 seconds and SE 3 ft at 9 seconds. Showers likely. Patchy fog
in the morning with vsby 1 to 3 NM.
.SAT NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas
3 to 4 ft. Wave Detail: E 4 ft at 6 seconds. A chance of showers
in the evening.
.SUN...E winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
4 ft. Wave Detail: E 4 ft at 5 seconds and S 1 foot at 9 seconds.
.SUN NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: SE
4 ft at 7 seconds and NE 1 foot at 3 seconds.
.MON...E winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas 3 to 4 ft. Wave Detail: E 4 ft at 8 seconds and S 2 ft at
7 seconds. A chance of showers.
.MON NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft.
.TUE THROUGH WED 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.

$$

ANZ232-141500-
Nantucket Sound-
1005 PM EDT Fri Jun 13 2025

.OVERNIGHT...SE winds around 10 kt. Seas around 2 ft. Wave
Detail: E 1 foot at 4 seconds. A slight chance of showers.
.SAT...E winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 5 seconds.
Showers likely.
.SAT NIGHT...E winds 15 to 20 kt, becoming NE 10 to 15 kt after
midnight. Seas 2 to 3 ft. Wave Detail: E 2 ft at 5 seconds.
.SUN...E winds 10 to 15 kt with gusts up to 20 kt. Seas around
2 ft. Wave Detail: E 2 ft at 4 seconds and SE 2 ft at 7 seconds.
.SUN NIGHT THROUGH MON NIGHT...E winds 10 to 15 kt. Seas around
2 ft. Wave Detail: SE 2 ft at 7 seconds and E 1 foot at
4 seconds.
.TUE THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to
20 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 3 seconds and E
2 ft at 7 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.

$$

ANZ233-141500-
Vineyard Sound-
1005 PM EDT Fri Jun 13 2025

.OVERNIGHT...SE winds around 10 kt. Seas around 2 ft. Wave
Detail: SE 1 foot at 4 seconds. A slight chance of showers.
.SAT...E winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. Seas 2 to 3 ft. Wave Detail: E 2 ft at 3 seconds and
SE 2 ft at 6 seconds. Showers likely.
.SAT NIGHT...E winds 15 to 20 kt, becoming NE 10 to 15 kt after
midnight. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 3 seconds and
SE 2 ft at 6 seconds. A chance of showers in the evening.
.SUN...E winds 10 to 15 kt. Seas around 2 ft. Wave Detail: SE
2 ft at 7 seconds and NE 1 foot at 3 seconds.
.SUN NIGHT THROUGH MON NIGHT...E winds 10 to 15 kt. Seas around
2 ft. Wave Detail: SE 2 ft at 7 seconds and E 1 foot at
3 seconds.
.TUE THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to
20 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 4 seconds and SE
2 ft at 7 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.

$$

ANZ234-141500-
Buzzards Bay-
1005 PM EDT Fri Jun 13 2025

.OVERNIGHT...SE winds 5 to 10 kt. Seas around 2 ft, then 1 foot
or less. Wave Detail: NE 1 foot at 3 seconds and S 1 foot at
5 seconds, becoming SE 1 foot at 4 seconds and NE 1 foot at
4 seconds. A slight chance of showers.
.SAT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Wave Detail: E 2 ft at 4 seconds. Showers likely.
.SAT NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft. Wave Detail: NE 2 ft at 3 seconds and SE 2 ft at
6 seconds.
.SUN...E winds 10 to 15 kt. Seas around 2 ft. Wave Detail: SE
2 ft at 7 seconds and NE 1 foot at 3 seconds.
.SUN NIGHT THROUGH MON NIGHT...E winds 5 to 10 kt. Seas around
2 ft. Wave Detail: SE 2 ft at 7 seconds and E 1 foot at
3 seconds.
.TUE THROUGH WED NIGHT...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
2 ft at 7 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.

$$

ANZ235-141500-
Rhode Island Sound-
1005 PM EDT Fri Jun 13 2025

.OVERNIGHT...SE winds around 10 kt. Seas around 2 ft. Wave
Detail: S 2 ft at 6 seconds and NE 1 foot at 3 seconds. A slight
chance of showers.
.SAT...E winds 10 to 15 kt, becoming NE 15 to 20 kt in the
afternoon. Gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft
at 5 seconds. Showers likely. Patchy fog in the morning.
.SAT NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas
2 to 3 ft. Wave Detail: NE 3 ft at 4 seconds and SE 3 ft at
7 seconds. A chance of showers in the evening.
.SUN...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Wave Detail: E 3 ft at 5 seconds and S 1 foot at 9 seconds.
.SUN NIGHT THROUGH MON NIGHT...E winds 10 to 15 kt. Seas 2 to
3 ft. Wave Detail: SE 3 ft at 7 seconds and NE 1 foot at
3 seconds.
.TUE THROUGH WED NIGHT...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.

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.

$$

ANZ237-141500-
Block Island Sound-
1005 PM EDT Fri Jun 13 2025

.OVERNIGHT...SE winds around 10 kt. Seas around 2 ft. Wave
Detail: SE 2 ft at 7 seconds. A chance of showers.
.SAT...E winds 10 to 15 kt, becoming NE 15 to 20 kt in the
afternoon. Gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft
at 5 seconds. Showers likely. Patchy fog in the morning.
.SAT NIGHT...NE winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. Gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail:
SE 3 ft at 7 seconds and NE 2 ft at 4 seconds. A chance of
showers in the evening.
.SUN...E 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 NE 2 ft at 4 seconds.
.SUN NIGHT THROUGH MON NIGHT...E winds 5 to 10 kt. Seas 2 to
3 ft. Wave Detail: SE 3 ft at 7 seconds and NE 1 foot at
3 seconds.
.TUE THROUGH WED NIGHT...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.

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.

$$

ANZ230-141500-
Boston Harbor-
1005 PM EDT Fri Jun 13 2025

.OVERNIGHT...S winds 5 to 10 kt. Waves 1 foot or less. A chance
of showers.
.SAT...E winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 20 kt in the afternoon. Waves around 2 ft. Showers likely,
mainly in the morning.
.SAT NIGHT...E winds 10 to 15 kt, becoming NE 5 to 10 kt after
midnight. Waves around 2 ft in the evening, then 1 foot or less.
.SUN...E winds 5 to 10 kt. Waves 1 foot or less.
.SUN NIGHT AND MON...SE winds 5 to 10 kt. Waves around 2 ft.
.MON NIGHT...S winds 5 to 10 kt. Waves around 2 ft in the
evening, then 1 foot or less.
.TUE THROUGH WED 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.

$$

ANZ236-141500-
Narragansett Bay-
1005 PM EDT Fri Jun 13 2025

.OVERNIGHT...SE winds 5 to 10 kt. Waves around 2 ft. A chance of
showers.
.SAT...E winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to
3 ft. Showers likely, mainly in the morning.
.SAT NIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Waves 2 to 3 ft.
.SUN...E winds around 10 kt. Waves around 2 ft.
.SUN NIGHT THROUGH MON NIGHT...E winds 5 to 10 kt. Waves around
2 ft.
.TUE THROUGH WED 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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