Coastal Waters Forecast
Issued by NWS Boston, MA

Home |  Current Version |  Previous Version |  Text Only |  Print | Product List |  Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
103
FZUS51 KBOX 150206
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
1006 PM EDT Sat Jun 14 2025

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

ANZ200-151500-
1006 PM EDT Sat Jun 14 2025

.Synopsis for Massachusetts and Rhode Island coastal waters...
High pres from the Maritimes builds into the ern MA waters
providing elevated easterly winds 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.

$$

ANZ250-151500-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
1006 PM EDT Sat Jun 14 2025

.OVERNIGHT...E winds around 10 kt. Seas 2 to 3 ft. Wave Detail: E
2 ft at 4 seconds and SE 1 foot at 9 seconds.
.SUN...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at
5 seconds and SE 1 foot at 9 seconds.
.SUN NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE
3 ft at 8 seconds.
.MON...SE winds 5 to 10 kt, increasing to 10 to 15 kt in the
afternoon. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds.
.MON NIGHT THROUGH TUE NIGHT...S 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 S
1 foot at 3 seconds.
.WED AND WED NIGHT...S 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 S 2 ft at
4 seconds.
.THU AND THU NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt.
Seas 2 to 4 ft. A chance of showers.

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.

$$

ANZ251-151500-
Massachusetts Bay and Ipswich Bay-
1006 PM EDT Sat Jun 14 2025

.OVERNIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E
2 ft at 4 seconds and SE 1 foot at 8 seconds.
.SUN...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft
at 5 seconds and SE 1 foot at 9 seconds.
.SUN NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
SE 2 ft at 7 seconds.
.MON...SE winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: SE
3 ft at 8 seconds and S 1 foot at 7 seconds.
.MON NIGHT...S winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave
Detail: SE 3 ft at 7 seconds and S 1 foot at 4 seconds.
.TUE AND TUE NIGHT...S winds 10 to 15 kt with gusts up to 20 kt.
Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds and S 1 foot
at 4 seconds.
.WED AND WED NIGHT...S winds 10 to 15 kt with gusts up to 20 kt.
Seas around 2 ft.
.THU AND THU NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt.
Seas 2 to 3 ft. A chance of showers.

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.

$$

ANZ231-151500-
Cape Cod Bay-
1006 PM EDT Sat Jun 14 2025

.OVERNIGHT...E winds around 10 kt. Seas around 2 ft. Wave Detail:
E 1 foot at 3 seconds and SE 1 foot at 8 seconds.
.SUN...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E
1 foot at 3 seconds and SE 1 foot at 9 seconds.
.SUN NIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E
2 ft at 2 seconds and S 1 foot at 7 seconds.
.MON...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft
at 2 seconds and S 1 foot at 7 seconds.
.MON NIGHT AND TUE...SE winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: SE 2 ft at 5 seconds.
.TUE NIGHT...S winds 5 to 10 kt. Seas around 2 ft in the evening,
then 1 foot or less. Wave Detail: SE 2 ft at 5 seconds, becoming
S 1 foot at 3 seconds and SE 1 foot at 7 seconds.
.WED AND WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt.
Seas around 2 ft.
.THU AND THU NIGHT...SW winds 15 to 20 kt with gusts up to 25 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.

$$

ANZ254-151500-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
1006 PM EDT Sat Jun 14 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT SUNDAY...

.OVERNIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 5 ft. Wave Detail: E 3 ft at 5 seconds and SE 1 foot at
9 seconds.
.SUN...E winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft
at 6 seconds and SE 1 foot at 9 seconds.
.SUN NIGHT...E winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: SE
3 ft at 7 seconds.
.MON...E winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E 3 ft at
8 seconds and S 2 ft at 7 seconds.
.MON NIGHT THROUGH TUE NIGHT...S winds 5 to 10 kt. Seas 2 to
3 ft. Wave Detail: SE 3 ft at 7 seconds.
.WED THROUGH THU NIGHT...SW winds 15 to 20 kt with gusts up to
25 kt. Seas 2 to 4 ft. Wave Detail: S 4 ft at 7 seconds and W
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.

$$

ANZ255-151500-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
1006 PM EDT Sat Jun 14 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT SUNDAY...

.OVERNIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas
3 to 5 ft. Wave Detail: E 4 ft at 5 seconds and SE 1 foot at
9 seconds. A slight chance of showers.
.SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
4 ft. Wave Detail: E 3 ft at 6 seconds and S 2 ft at 8 seconds.
.SUN NIGHT...E winds 10 to 15 kt. Seas 2 to 4 ft. Wave Detail: SE
3 ft at 7 seconds.
.MON...E winds around 10 kt. Seas 2 to 4 ft. Wave Detail: E 3 ft
at 8 seconds and S 2 ft at 7 seconds.
.MON NIGHT AND TUE...SE winds around 10 kt. Seas 2 to 4 ft. Wave
Detail: SE 3 ft at 7 seconds.
.TUE NIGHT...SE winds around 10 kt. Seas 2 to 3 ft. Wave Detail:
SE 3 ft at 7 seconds.
.WED THROUGH THU...SW winds 15 to 20 kt with gusts up to 25 kt.
Seas 2 to 4 ft.
.THU NIGHT...SW winds around 20 kt with gusts up to 25 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.

$$

ANZ256-151500-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
1006 PM EDT Sat Jun 14 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT SUNDAY...

.OVERNIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas
5 to 6 ft, subsiding to 3 to 5 ft. Wave Detail: E 4 ft at
5 seconds and SE 1 foot at 9 seconds, becoming E 4 ft at
5 seconds and S 1 foot at 9 seconds. A slight chance of showers.
.SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
4 ft. Wave Detail: NE 4 ft at 6 seconds and S 2 ft at 8 seconds.
.SUN NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: SE
3 ft at 7 seconds.
.MON...E winds around 10 kt. Seas 3 to 4 ft. Wave Detail: E 3 ft
at 8 seconds and S 2 ft at 8 seconds.
.MON NIGHT AND TUE...E winds around 10 kt. Seas 3 to 4 ft. Wave
Detail: E 3 ft at 8 seconds and S 1 foot at 8 seconds.
.TUE NIGHT...SE winds around 10 kt, becoming S after midnight.
Seas around 3 ft. Wave Detail: SE 3 ft at 7 seconds.
.WED THROUGH THU...SW winds 15 to 20 kt with gusts up to 25 kt.
Seas 3 to 4 ft.
.THU NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas
3 to 5 ft. A chance of showers.

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.

$$

ANZ232-151500-
Nantucket Sound-
1006 PM EDT Sat Jun 14 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT SUNDAY...

.OVERNIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 4 ft. Wave Detail: E 3 ft at 4 seconds and SE 1 foot at
8 seconds.
.SUN...NE winds 10 to 15 kt. Seas around 2 ft. Wave Detail: E
2 ft at 4 seconds and S 1 foot at 8 seconds.
.SUN NIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
SE 2 ft at 7 seconds.
.MON...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft
at 7 seconds.
.MON NIGHT AND TUE...SE winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: SE 2 ft at 7 seconds.
.TUE NIGHT...SE winds around 10 kt. Seas around 2 ft. Wave
Detail: SE 2 ft at 7 seconds.
.WED THROUGH THU NIGHT...SW winds 15 to 20 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.

$$

ANZ233-151500-
Vineyard Sound-
1006 PM EDT Sat Jun 14 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT SUNDAY...

.OVERNIGHT...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 1 foot at
8 seconds.
.SUN...NE winds 10 to 15 kt. Seas around 2 ft. Wave Detail: NE
1 foot at 3 seconds and S 1 foot at 8 seconds.
.SUN NIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S
2 ft at 7 seconds and E 1 foot at 3 seconds.
.MON...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E
1 foot at 3 seconds and S 1 foot at 7 seconds.
.MON NIGHT AND TUE...SE winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: SE 2 ft at 7 seconds and E 1 foot at 4 seconds.
.TUE NIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
SE 2 ft at 7 seconds.
.WED AND WED NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt.
Seas around 2 ft.
.THU AND THU NIGHT...SW winds 15 to 20 kt with gusts up to 25 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.

$$

ANZ234-151500-
Buzzards Bay-
1006 PM EDT Sat Jun 14 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT SUNDAY...

.OVERNIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas
around 2 ft. Wave Detail: NE 2 ft at 3 seconds and SE 1 foot at
8 seconds.
.SUN...NE winds 10 to 15 kt. Seas around 2 ft. Wave Detail: NE
1 foot at 3 seconds and S 1 foot at 8 seconds.
.SUN NIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E
1 foot at 3 seconds and S 1 foot at 7 seconds.
.MON...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E
1 foot at 2 seconds and S 1 foot at 7 seconds.
.MON NIGHT AND TUE...SE winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: E 1 foot at 4 seconds and S 1 foot at 7 seconds.
.TUE NIGHT...S winds 5 to 10 kt. Seas 1 foot or less. Wave
Detail: SE 1 foot at 7 seconds.
.WED AND WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt.
Seas around 2 ft.
.THU AND THU NIGHT...SW winds 15 to 20 kt with gusts up to 25 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.

$$

ANZ235-151500-
Rhode Island Sound-
1006 PM EDT Sat Jun 14 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT SUNDAY...

.OVERNIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas
2 to 4 ft. Wave Detail: E 4 ft at 5 seconds and SE 1 foot at
9 seconds. A slight chance of showers.
.SUN...NE winds 10 to 15 kt. Gusts up to 20 kt in the morning.
Seas 2 to 3 ft. Wave Detail: NE 3 ft at 5 seconds and S 2 ft at
8 seconds.
.SUN NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE
3 ft at 7 seconds.
.MON...E winds around 10 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft
at 7 seconds and S 2 ft at 8 seconds.
.MON NIGHT AND TUE...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave
Detail: SE 3 ft at 8 seconds and S 1 foot at 7 seconds.
.TUE NIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
SE 2 ft at 7 seconds.
.WED THROUGH THU NIGHT...SW winds 15 to 20 kt with gusts up to
25 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.

$$

ANZ237-151500-
Block Island Sound-
1006 PM EDT Sat Jun 14 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT SUNDAY...

.OVERNIGHT...NE winds 10 to 15 kt with gusts up to 25 kt. Seas
3 to 5 ft. Wave Detail: E 4 ft at 5 seconds and SE 1 foot at
9 seconds. A slight chance of showers.
.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.
.SUN NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE
3 ft at 7 seconds.
.MON...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft
at 7 seconds.
.MON NIGHT AND TUE...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave
Detail: E 3 ft at 8 seconds and S 1 foot at 8 seconds.
.TUE NIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
SE 2 ft at 7 seconds.
.WED AND WED NIGHT...SW winds 10 to 15 kt. Seas around 2 ft.
.THU...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
4 ft. A chance of showers.
.THU NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas
2 to 4 ft. A chance of showers.

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.

$$

ANZ230-151500-
Boston Harbor-
1006 PM EDT Sat Jun 14 2025

.OVERNIGHT...NE winds 5 to 10 kt. Waves 1 foot or less.
.SUN...E winds 5 to 10 kt. Waves 1 foot or less.
.SUN NIGHT...SE winds 5 to 10 kt. Waves 1 foot or less.
.MON...SE winds 5 to 10 kt, increasing to 10 to 15 kt in the
afternoon. Waves 1 foot or less, then around 2 ft in the
afternoon.
.MON NIGHT...S winds 10 to 15 kt, diminishing to 5 to 10 kt after
midnight. Waves around 2 ft in the evening, then 1 foot or less.
.TUE AND TUE NIGHT...S winds 10 to 15 kt. Waves around 2 ft.
.WED AND WED NIGHT...S winds 10 to 15 kt. Gusts up to 20 kt.
Waves around 2 ft.
.THU AND THU NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt.
Waves around 2 ft. A chance of showers.

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.

$$

ANZ236-151500-
Narragansett Bay-
1006 PM EDT Sat Jun 14 2025

.OVERNIGHT...NE winds around 10 kt. Gusts up to 20 kt. Waves
around 2 ft. A slight chance of showers.
.SUN...NE winds around 10 kt, becoming E in the afternoon. Waves
around 2 ft.
.SUN NIGHT...E winds 5 to 10 kt. Waves around 2 ft.
.MON...E winds 5 to 10 kt, becoming SE in the afternoon. Waves
around 2 ft.
.MON NIGHT AND TUE...SE winds 5 to 10 kt. Waves around 2 ft.
.TUE NIGHT...S winds 5 to 10 kt. Waves around 2 ft.
.WED AND WED NIGHT...SW winds 10 to 15 kt. Waves around 2 ft.
.THU AND THU NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt.
Waves 2 to 3 ft. A chance of showers.

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