Coastal Waters Forecast
Issued by NWS Boston, MA

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034
FZUS51 KBOX 280204
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
1004 PM EDT Sat Apr 27 2024

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

ANZ200-281500-
1004 PM EDT Sat Apr 27 2024

.Synopsis for Massachusetts and Rhode Island coastal waters...
High pres south of New Eng will drift further SE through tonight. A
warm front will move across southern New Eng and the coastal waters
tonight into Sunday. A cold front will drop south across the waters
Monday and stall to the west through Tue. Low pres may track south
of New Eng Tue night into Wed, then high pres will follow for Thu.

$$

ANZ250-281500-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
1004 PM EDT Sat Apr 27 2024

.OVERNIGHT...SW winds around 10 kt. Seas 2 to 3 ft. Wave Detail:
SE 2 ft at 4 seconds and E 2 ft at 9 seconds.
.SUN...S winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft
at 3 seconds and E 2 ft at 10 seconds.
.SUN NIGHT...S winds 10 to 15 kt, becoming SW 5 to 10 kt after
midnight. Seas 2 to 3 ft. Wave Detail: S 2 ft at 3 seconds and E
2 ft at 10 seconds.
.MON...N winds around 10 kt, becoming NE in the afternoon. Gusts
up to 20 kt. Seas 2 to 3 ft. Wave Detail: NW 2 ft at 4 seconds
and E 2 ft at 10 seconds.
.MON NIGHT...N winds 5 to 10 kt. Gusts up to 20 kt after
midnight. Seas 2 to 3 ft. Wave Detail: E 3 ft at 11 seconds and N
2 ft at 4 seconds.
.TUE...NE winds 5 to 10 kt. Gusts up to 20 kt in the morning.
Seas 2 to 3 ft. Wave Detail: E 3 ft at 9 seconds and NE 2 ft at
4 seconds.
.TUE NIGHT...SE winds around 10 kt. Seas 2 to 3 ft. A chance of
showers.
.WED...E winds around 10 kt. Seas 2 to 3 ft. A chance of showers.
.WED NIGHT THROUGH THU NIGHT...S winds 5 to 10 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.

$$

ANZ251-281500-
Massachusetts Bay and Ipswich Bay-
1004 PM EDT Sat Apr 27 2024

.OVERNIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
SE 2 ft at 3 seconds and E 2 ft at 9 seconds. A slight chance of
showers.
.SUN...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft
at 4 seconds and E 2 ft at 10 seconds.
.SUN NIGHT...S winds around 10 kt, becoming W after midnight.
Seas around 2 ft. Wave Detail: SE 2 ft at 3 seconds and E 2 ft at
10 seconds.
.MON...N winds around 10 kt, becoming NE in the afternoon. Gusts
up to 20 kt. Seas around 2 ft. Wave Detail: NE 2 ft at 3 seconds
and NW 2 ft at 3 seconds.
.MON NIGHT...E winds 5 to 10 kt, becoming NE 10 to 15 kt with
gusts up to 20 kt after midnight. Seas around 2 ft. Wave Detail:
NE 2 ft at 4 seconds and E 2 ft at 11 seconds.
.TUE...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Wave Detail: E 3 ft at 10 seconds and NE 2 ft at 4 seconds.
.TUE NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. Seas 2 to 3 ft. A
chance of showers.
.WED...E winds around 10 kt. Seas around 2 ft. A chance of
showers.
.WED NIGHT THROUGH THU NIGHT...S winds 5 to 10 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.

$$

ANZ231-281500-
Cape Cod Bay-
1004 PM EDT Sat Apr 27 2024

.OVERNIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
SW 1 ft at 2 seconds and E 1 ft at 5 seconds. A chance of
showers.
.SUN...SW winds 5 to 10 kt. Gusts up to 20 kt in the morning.
Seas around 2 ft. Wave Detail: SW 1 ft at 2 seconds and E 1 ft at
6 seconds.
.SUN NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
E 2 ft at 10 seconds and S 1 ft at 3 seconds.
.MON...NW winds 5 to 10 kt, becoming NE in the afternoon. Gusts
up to 20 kt. Seas around 2 ft. Wave Detail: E 2 ft at 10 seconds
and NW 1 ft at 3 seconds.
.MON NIGHT...NE winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
E 2 ft at 11 seconds and N 1 ft at 3 seconds.
.TUE...NE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft
at 10 seconds and NE 1 ft at 3 seconds.
.TUE NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. A chance of
showers.
.WED...E winds around 10 kt with gusts up to 20 kt. Seas around
2 ft. A chance of showers.
.WED NIGHT THROUGH THU NIGHT...SW winds 5 to 10 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.

$$

ANZ254-281500-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
1004 PM EDT Sat Apr 27 2024

.OVERNIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
2 ft at 9 seconds and SW 1 ft at 3 seconds.
.SUN...SW winds 5 to 10 kt. Gusts up to 20 kt in the afternoon.
Seas 2 to 3 ft. Wave Detail: SW 2 ft at 3 seconds and E 2 ft at
10 seconds.
.SUN NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
3 ft at 10 seconds and SW 2 ft at 3 seconds.
.MON...NW winds 5 to 10 kt, becoming N in the afternoon. Gusts up
to 20 kt. Seas 2 to 4 ft. Wave Detail: E 3 ft at 10 seconds and W
2 ft at 4 seconds.
.MON NIGHT...N winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E
3 ft at 11 seconds and SW 2 ft at 6 seconds.
.TUE...NE winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E 3 ft
at 10 seconds and NE 2 ft at 4 seconds.
.TUE NIGHT...SE winds 5 to 10 kt. Gusts up to 20 kt after
midnight. Seas 3 to 4 ft. A chance of showers after midnight.
.WED...E winds around 10 kt with gusts up to 20 kt. Seas around
3 ft. A chance of showers.
.WED NIGHT THROUGH THU NIGHT...SW winds 5 to 10 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.

$$

ANZ255-281500-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
1004 PM EDT Sat Apr 27 2024

.OVERNIGHT...W winds around 10 kt. Seas 2 to 3 ft. Wave Detail:
SW 2 ft at 4 seconds and E 2 ft at 8 seconds. A chance of
showers.
.SUN...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 E 2 ft at 8 seconds.
.SUN NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SW
2 ft at 4 seconds and E 2 ft at 9 seconds.
.MON...NW winds 10 to 15 kt, becoming N in the afternoon. Gusts
up to 20 kt. Seas 2 to 4 ft. Wave Detail: W 3 ft at 5 seconds and
E 3 ft at 10 seconds.
.MON NIGHT...NE winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: E
3 ft at 11 seconds and SW 2 ft at 6 seconds.
.TUE...E winds 10 to 15 kt. Gusts up to 20 kt in the morning.
Seas 2 to 3 ft. Wave Detail: E 3 ft at 10 seconds and NE 2 ft at
3 seconds.
.TUE NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft. A chance of showers after midnight.
.WED...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. A chance of showers.
.WED NIGHT THROUGH THU 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.

$$

ANZ256-281500-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
1004 PM EDT Sat Apr 27 2024

.OVERNIGHT...SW winds around 10 kt. Seas around 2 ft. Wave
Detail: SW 2 ft at 3 seconds and SE 2 ft at 8 seconds. Showers
likely.
.SUN...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 9 seconds.
A chance of showers in the morning.
.SUN NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S
2 ft at 4 seconds and E 2 ft at 9 seconds.
.MON...NW winds around 10 kt, becoming N in the afternoon. Seas
2 to 3 ft. Wave Detail: SW 2 ft at 5 seconds and E 2 ft at
10 seconds.
.MON NIGHT AND TUE...E winds 5 to 10 kt with gusts up to 20 kt.
Seas 2 to 3 ft. Wave Detail: E 2 ft at 3 seconds and S 2 ft at
6 seconds.
.TUE NIGHT...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 and E 2 ft at
10 seconds. A chance of showers after midnight.
.WED...NE winds around 10 kt with gusts up to 20 kt. Seas 2 to
3 ft. A chance of showers.
.WED NIGHT THROUGH THU 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.

$$

ANZ232-281500-
Nantucket Sound-
1004 PM EDT Sat Apr 27 2024

.OVERNIGHT...SW winds around 10 kt. Seas around 2 ft. Wave
Detail: SW 1 ft at 3 seconds and E 1 ft at 7 seconds. A chance of
showers.
.SUN...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around
2 ft. Wave Detail: SW 2 ft at 3 seconds and E 1 ft at 7 seconds.
A chance of showers in the morning.
.SUN NIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt in the
evening. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and
E 1 ft at 10 seconds.
.MON...NW winds 5 to 10 kt, becoming N in the afternoon. Gusts up
to 20 kt. Seas around 2 ft. Wave Detail: NW 2 ft at 3 seconds and
E 1 ft at 10 seconds.
.MON NIGHT...NE winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
E 2 ft at 11 seconds and NE 1 ft at 3 seconds.
.TUE...NE winds around 10 kt. Seas around 2 ft. Wave Detail: E
2 ft at 10 seconds and NE 1 ft at 3 seconds.
.TUE NIGHT...E winds around 10 kt with gusts up to 20 kt. Seas
around 2 ft. A chance of showers after midnight.
.WED...E winds around 10 kt with gusts up to 20 kt. Seas around
2 ft. A chance of showers.
.WED NIGHT THROUGH THU NIGHT...SW winds 5 to 10 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.

$$

ANZ233-281500-
Vineyard Sound-
1004 PM EDT Sat Apr 27 2024

.OVERNIGHT...SW winds around 10 kt. Seas around 2 ft. Wave
Detail: SW 1 ft at 4 seconds and E 1 ft at 7 seconds. A chance of
showers.
.SUN...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around
2 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 ft at 9 seconds.
A chance of showers in the morning.
.SUN NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
SW 2 ft at 4 seconds and SE 1 ft at 9 seconds.
.MON...NW winds 5 to 10 kt, becoming NE in the afternoon. Seas
around 2 ft. Wave Detail: NE 1 ft at 2 seconds and W 1 ft at
4 seconds.
.MON NIGHT...E winds 5 to 10 kt, becoming NE after midnight. Seas
around 2 ft. Wave Detail: SW 2 ft at 6 seconds and NE 1 ft at
2 seconds.
.TUE...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: NE 1 ft
at 3 seconds and SW 1 ft at 6 seconds.
.TUE NIGHT...E winds around 10 kt with gusts up to 20 kt. Seas
around 2 ft. A chance of showers.
.WED...E winds around 10 kt with gusts up to 20 kt. Seas around
2 ft. A chance of showers.
.WED NIGHT THROUGH THU NIGHT...SW winds 5 to 10 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.

$$

ANZ234-281500-
Buzzards Bay-
1004 PM EDT Sat Apr 27 2024

.OVERNIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
SW 1 ft at 3 seconds and E 1 ft at 7 seconds. A chance of
showers.
.SUN...SW winds 10 to 15 kt with gusts up to 20 kt. 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.
.SUN NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
SW 1 ft at 4 seconds and SE 1 ft at 9 seconds.
.MON...NW winds 5 to 10 kt, becoming NE in the afternoon. Gusts
up to 20 kt. Seas around 2 ft. Wave Detail: NE 1 ft at 2 seconds
and W 1 ft at 4 seconds.
.MON NIGHT...E winds 5 to 10 kt, becoming NE after midnight. Seas
around 2 ft. Wave Detail: NE 1 ft at 2 seconds and SW 1 ft at
5 seconds.
.TUE...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: NE 1 ft
at 2 seconds and SW 1 ft at 6 seconds.
.TUE NIGHT...E winds 5 to 10 kt. Seas around 2 ft. A chance of
showers.
.WED...E winds around 10 kt with gusts up to 20 kt. Seas around
2 ft. A chance of showers.
.WED NIGHT THROUGH THU NIGHT...SW winds 5 to 10 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.

$$

ANZ235-281500-
Rhode Island Sound-
1004 PM EDT Sat Apr 27 2024

.OVERNIGHT...SW winds around 10 kt. Seas around 2 ft. Wave
Detail: SW 2 ft at 3 seconds and SE 1 ft at 8 seconds. Showers
likely.
.SUN...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around
2 ft. Wave Detail: SW 2 ft at 4 seconds and SE 2 ft at 9 seconds.
A chance of showers in the morning.
.SUN NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
SW 2 ft at 4 seconds and SE 2 ft at 9 seconds.
.MON...NW winds 5 to 10 kt, becoming NE in the afternoon. Seas
around 2 ft. Wave Detail: SW 2 ft at 5 seconds and NE 1 ft at
2 seconds.
.MON NIGHT AND TUE...E winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: E 2 ft at 3 seconds and S 2 ft at 6 seconds.
.TUE NIGHT...E winds around 10 kt with gusts up to 20 kt. Seas
around 2 ft. Wave Detail: SE 2 ft at 5 seconds and SE 1 ft at
10 seconds. A chance of showers.
.WED...E winds around 10 kt with gusts up to 20 kt. Seas around
2 ft. A chance of showers.
.WED NIGHT THROUGH THU NIGHT...SW winds 5 to 10 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.

$$

ANZ237-281500-
Block Island Sound-
1004 PM EDT Sat Apr 27 2024

.OVERNIGHT...SW winds around 10 kt. Seas around 2 ft. Wave
Detail: SE 2 ft at 8 seconds and SW 1 ft at 3 seconds. A chance
of showers, then showers likely.
.SUN...SW winds around 10 kt with gusts up to 20 kt. Seas around
2 ft. Wave Detail: SW 2 ft at 3 seconds and SE 2 ft at 9 seconds.
A chance of showers in the morning.
.SUN NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
SW 2 ft at 4 seconds and SE 2 ft at 9 seconds. Patchy fog after
midnight with vsby 1 NM or less.
.MON...NW winds 5 to 10 kt, becoming W in the afternoon. Seas
around 2 ft. Wave Detail: S 2 ft at 5 seconds and E 2 ft at
9 seconds.
.MON NIGHT AND TUE...E winds 5 to 10 kt with gusts up to 20 kt.
Seas around 2 ft. Wave Detail: E 2 ft at 3 seconds and S 2 ft at
6 seconds.
.TUE NIGHT...E winds around 10 kt with gusts up to 20 kt. Seas
around 2 ft. Wave Detail: SE 2 ft at 5 seconds and E 1 ft at
10 seconds. A chance of showers after midnight.
.WED...E winds around 10 kt with gusts up to 20 kt. Seas around
2 ft. A chance of showers.
.WED NIGHT THROUGH THU NIGHT...SW winds 5 to 10 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.

$$

ANZ230-281500-
Boston Harbor-
1004 PM EDT Sat Apr 27 2024

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

$$

ANZ236-281500-
Narragansett Bay-
1004 PM EDT Sat Apr 27 2024

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