073
FZUS51 KBOX 291704
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
104 PM EDT Sun Jun 29 2025

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

ANZ200-300600-
104 PM EDT Sun Jun 29 2025

.Synopsis for Massachusetts and Rhode Island coastal waters...
A cold front moves across the waters this morning followed by brief
high pressure late today and Monday, before another cold front
crosses through the region during the day on Tuesday.

$$

ANZ250-300600-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
104 PM EDT Sun Jun 29 2025

.THIS AFTERNOON...E winds around 5 kt. Seas 2 to 4 ft. Wave
Detail: E 4 ft at 7 seconds. Patchy fog. Vsby 1 NM or less.
.TONIGHT...SE winds around 5 kt, becoming W after midnight. Seas
2 to 4 ft. Wave Detail: E 4 ft at 8 seconds. Patchy fog. Vsby
1 NM or less.
.MON...N winds around 5 kt, becoming SE in the afternoon. Seas
2 to 3 ft. Wave Detail: E 3 ft at 8 seconds and SE 1 foot at
2 seconds. Patchy fog in the morning with vsby 1 NM or less.
.MON NIGHT...S winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 2 to 3 ft. Wave Detail: E 3 ft at 8 seconds and S
2 ft at 3 seconds.
.TUE AND TUE NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt.
Seas 2 to 4 ft. Wave Detail: S 3 ft at 4 seconds and E 2 ft at
8 seconds. A chance of showers. Vsby 1 to 3 NM.
.WED THROUGH THU NIGHT...W winds 10 to 15 kt. Seas 2 to 3 ft.
Wave Detail: W 3 ft at 4 seconds and E 2 ft at 9 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.

$$

ANZ251-300600-
Massachusetts Bay and Ipswich Bay-
104 PM EDT Sun Jun 29 2025

.THIS AFTERNOON...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave
Detail: E 3 ft at 7 seconds and SW 1 foot at 4 seconds.
.TONIGHT...SE winds around 5 kt, becoming W after midnight. Seas
2 to 3 ft. Wave Detail: E 3 ft at 7 seconds and SW 1 foot at
4 seconds. Patchy fog. Vsby 1 to 3 NM, decreasing to 1 NM or less
after midnight.
.MON...N winds around 5 kt, becoming SE 10 to 15 kt in the
afternoon. Seas around 2 ft. Wave Detail: E 2 ft at 8 seconds and
S 1 foot at 4 seconds. Patchy fog in the morning with vsby 1 NM
or less.
.MON NIGHT...S winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 2 to 3 ft. Wave Detail: E 3 ft at 8 seconds and SE
2 ft at 4 seconds.
.TUE AND TUE NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt.
Seas 2 to 3 ft. Wave Detail: S 3 ft at 4 seconds and E 2 ft at
7 seconds. A chance of showers. Vsby 1 to 3 NM.
.WED THROUGH THU NIGHT...W winds 5 to 10 kt. Seas around 2 ft.
Wave Detail: W 2 ft at 3 seconds and E 2 ft at 9 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.

$$

ANZ231-300600-
Cape Cod Bay-
104 PM EDT Sun Jun 29 2025

.THIS AFTERNOON...E winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: E 2 ft at 7 seconds and SW 1 foot at 2 seconds.
.TONIGHT...SE winds 5 to 10 kt, becoming W after midnight. Seas
around 2 ft. Wave Detail: E 2 ft at 7 seconds and S 1 foot at
3 seconds. Patchy fog. Vsby 1 NM or less.
.MON...N winds around 5 kt, becoming E in the afternoon. Seas
around 2 ft. Wave Detail: E 2 ft at 7 seconds and SW 1 foot at
3 seconds. Patchy fog in the morning with vsby 1 NM or less.
.MON NIGHT...S winds 5 to 10 kt. Seas around 2 ft in the evening,
then 1 foot or less. Wave Detail: E 2 ft at 7 seconds and S
1 foot at 2 seconds, becoming S 1 foot at 2 seconds and E 1 foot
at 7 seconds.
.TUE AND TUE NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt.
Seas 2 to 4 ft. Wave Detail: SW 2 ft at 3 seconds and E 1 foot at
7 seconds. A chance of showers.
.WED THROUGH THU NIGHT...W winds 5 to 10 kt. Seas around 2 ft.
Wave Detail: SW 1 foot at 3 seconds and E 1 foot at 9 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.

$$

ANZ254-300600-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
104 PM EDT Sun Jun 29 2025

.THIS AFTERNOON...S winds 5 to 10 kt. Seas 3 to 4 ft. Wave
Detail: SE 3 ft at 7 seconds and SW 1 foot at 3 seconds. Patchy
fog. Vsby 1 NM or less.
.TONIGHT...S winds 5 to 10 kt, becoming W after midnight. Seas
2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds and SW 1 foot at
3 seconds. Patchy fog. Vsby 1 NM or less.
.MON...N winds around 5 kt, becoming SE in the afternoon. Seas
2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds and SW 1 foot at
5 seconds. Patchy fog. Vsby 1 NM or less, increasing to 1 to 3 NM
in the afternoon.
.MON NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE
3 ft at 8 seconds and S 2 ft at 5 seconds.
.TUE...S winds 10 to 15 kt, becoming SW 15 to 20 kt in the
afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: S 3 ft
at 5 seconds and E 2 ft at 8 seconds.
.TUE NIGHT...SW winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. Gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail:
SW 4 ft at 6 seconds and E 2 ft at 9 seconds. A chance of
showers.
.WED...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
5 ft. A chance of showers.
.WED NIGHT THROUGH THU NIGHT...W 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.

$$

ANZ255-300600-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
104 PM EDT Sun Jun 29 2025

.THIS AFTERNOON...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave
Detail: S 3 ft at 7 seconds. Patchy fog. Vsby 1 NM or less.
.TONIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE
3 ft at 8 seconds. Patchy fog. Vsby 1 NM or less.
.MON...W winds around 5 kt, becoming S in the afternoon. Seas
2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds and S 2 ft at
5 seconds. Patchy fog. Vsby 1 NM or less, increasing to 1 to 3 NM
in the afternoon.
.MON NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S
2 ft at 5 seconds and SE 2 ft at 8 seconds.
.TUE...SW winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. Gusts up to 25 kt. Seas 2 to 3 ft, building to 3 to
5 ft in the afternoon. Wave Detail: S 3 ft at 7 seconds, becoming
SW 4 ft at 5 seconds and SE 2 ft at 8 seconds.
.TUE NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas
4 to 6 ft. Wave Detail: SW 5 ft at 6 seconds and E 2 ft at
9 seconds. A chance of showers.
.WED...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to
5 ft. A chance of showers.
.WED NIGHT AND THU...SW winds 10 to 15 kt. Gusts up to 20 kt.
Seas 3 to 5 ft.
.THU NIGHT...W winds 10 to 15 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.

$$

ANZ256-300600-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
104 PM EDT Sun Jun 29 2025

.THIS AFTERNOON...SW winds around 10 kt. Seas around 3 ft. Wave
Detail: SE 3 ft at 8 seconds and S 1 foot at 5 seconds. Patchy
fog. Vsby 1 NM or less.
.TONIGHT...W winds 5 to 10 kt. Seas around 3 ft. Wave Detail: SE
3 ft at 8 seconds and S 2 ft at 5 seconds. Patchy fog. Vsby 1 NM
or less.
.MON...NE winds around 5 kt, becoming S in the afternoon. Seas
around 3 ft. Wave Detail: SE 3 ft at 8 seconds and S 2 ft at
5 seconds. Patchy fog in the morning with vsby 1 NM or less.
.MON NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S
2 ft at 5 seconds and SE 2 ft at 8 seconds.
.TUE...SW winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. Gusts up to 25 kt. Seas 2 to 3 ft, building to 3 to
5 ft in the afternoon. Wave Detail: S 3 ft at 5 seconds and SE
2 ft at 8 seconds, becoming S 4 ft at 5 seconds and SE 2 ft at
8 seconds. A chance of showers in the afternoon.
.TUE NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas
5 to 6 ft. Wave Detail: SW 6 ft at 7 seconds and E 1 foot at
8 seconds. A chance of showers.
.WED...SW winds 10 to 15 kt. Seas 4 to 5 ft. A chance of showers.
.WED NIGHT THROUGH THU NIGHT...W winds 10 to 15 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.

$$

ANZ232-300600-
Nantucket Sound-
104 PM EDT Sun Jun 29 2025

.THIS AFTERNOON...SW winds 10 to 15 kt. Seas around 2 ft. Wave
Detail: SW 1 foot at 3 seconds and SE 1 foot at 7 seconds. Patchy
fog. Vsby 1 NM or less.
.TONIGHT...SW winds 5 to 10 kt, becoming W after midnight. Seas
around 2 ft. Wave Detail: SW 1 foot at 3 seconds and E 1 foot at
7 seconds. Patchy fog. Vsby 1 NM or less.
.MON...NE winds around 5 kt, becoming SE in the afternoon. Seas
around 2 ft. Wave Detail: SW 1 foot at 5 seconds and E 1 foot at
7 seconds. Patchy fog. Vsby 1 NM or less, increasing to 1 to 3 NM
in the afternoon.
.MON NIGHT...S winds 5 to 10 kt. Seas around 2 ft in the evening,
then 1 foot or less. Wave Detail: S 1 foot at 3 seconds and E
1 foot at 7 seconds, becoming SW 1 foot at 3 seconds and E 1 foot
at 7 seconds.
.TUE...SW 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: SW
3 ft at 4 seconds and E 1 foot at 7 seconds.
.TUE NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas
2 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and E 1 foot at
8 seconds. A chance of showers.
.WED...SW 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...W 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.

$$

ANZ233-300600-
Vineyard Sound-
104 PM EDT Sun Jun 29 2025

.THIS AFTERNOON...SW winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: SW 1 foot at 4 seconds and SE 1 foot at 8 seconds. Patchy
fog. Vsby 1 NM or less.
.TONIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Seas
around 2 ft. Wave Detail: SE 2 ft at 8 seconds and SW 1 foot at
4 seconds. Patchy fog. Vsby 1 to 3 NM, decreasing to 1 NM or less
after midnight.
.MON...NE winds around 5 kt, becoming S in the afternoon. Seas
around 2 ft. Wave Detail: SW 1 foot at 5 seconds and SE 1 foot at
8 seconds. Patchy fog in the morning with vsby 1 NM or less.
.MON NIGHT...S winds 5 to 10 kt. Seas around 2 ft in the evening,
then 1 foot or less. Wave Detail: SW 1 foot at 5 seconds and SE
1 foot at 8 seconds.
.TUE AND TUE NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt.
Seas 2 to 4 ft. Wave Detail: SW 4 ft at 5 seconds and SE 1 foot
at 8 seconds. A chance of showers.
.WED...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Wave Detail: SW 3 ft at 7 seconds and SE 1 foot at
9 seconds. A chance of showers.
.WED NIGHT THROUGH THU NIGHT...W winds 10 to 15 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.

$$

ANZ234-300600-
Buzzards Bay-
104 PM EDT Sun Jun 29 2025

.THIS AFTERNOON...SW winds around 10 kt with gusts up to 20 kt.
Seas around 2 ft. Wave Detail: SW 1 foot at 3 seconds and SE
1 foot at 8 seconds. Patchy fog. Vsby 1 NM or less.
.TONIGHT...SW winds 10 to 15 kt, becoming NW around 5 kt after
midnight. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and
SW 1 foot at 4 seconds. Patchy fog. Vsby 1 to 3 NM, decreasing to
1 NM or less after midnight.
.MON...NE winds around 5 kt, becoming S in the afternoon. Seas
1 foot or less, then around 2 ft in the afternoon. Wave Detail:
SW 1 foot at 5 seconds and SE 1 foot at 8 seconds, becoming S
1 foot at 5 seconds and SE 1 foot at 8 seconds. Patchy fog in the
morning with vsby 1 NM or less.
.MON NIGHT...S winds 5 to 10 kt. Seas around 2 ft in the evening,
then 1 foot or less. Wave Detail: SW 1 foot at 4 seconds and SE
1 foot at 8 seconds, becoming SW 1 foot at 5 seconds and SE
1 foot at 8 seconds.
.TUE AND TUE NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt.
Seas 2 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and SE 1 foot
at 8 seconds. A chance of showers.
.WED THROUGH THU NIGHT...W winds 10 to 15 kt with gusts up to
20 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 7 seconds and E
1 foot at 9 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.

$$

ANZ235-300600-
Rhode Island Sound-
104 PM EDT Sun Jun 29 2025

.THIS AFTERNOON...SW winds around 10 kt. Seas 2 to 3 ft. Wave
Detail: S 3 ft at 7 seconds. Patchy fog. Vsby 1 NM or less.
.TONIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Seas
2 to 3 ft. Wave Detail: S 3 ft at 7 seconds. Patchy fog. Vsby
1 NM or less.
.MON...NE winds around 5 kt, becoming S in the afternoon. Seas
around 2 ft. Wave Detail: S 2 ft at 5 seconds and SE 2 ft at
8 seconds. Patchy fog in the morning with vsby 1 NM or less.
.MON NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S
2 ft at 5 seconds and SE 2 ft at 8 seconds.
.TUE...SW winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: S 4 ft
at 5 seconds and SE 2 ft at 8 seconds. A chance of showers in the
afternoon.
.TUE NIGHT...SW winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. Gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: S
5 ft at 7 seconds. A chance of showers.
.WED THROUGH THU NIGHT...W winds 10 to 15 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.

$$

ANZ237-300600-
Block Island Sound-
104 PM EDT Sun Jun 29 2025

.THIS AFTERNOON...SW winds around 10 kt. Seas 2 to 3 ft. Wave
Detail: SE 3 ft at 8 seconds and SW 1 foot at 4 seconds.
.TONIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Seas
2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds and SW 1 foot at
4 seconds. Patchy fog after midnight with vsby 1 NM or less.
.MON...NE winds around 5 kt, becoming S in the afternoon. Seas
around 2 ft. Wave Detail: SE 2 ft at 8 seconds and S 1 foot at
5 seconds. Patchy fog in the morning with vsby 1 NM or less.
.MON NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SW
2 ft at 5 seconds and SE 2 ft at 8 seconds.
.TUE AND TUE NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt.
Seas 2 to 4 ft. Wave Detail: SW 4 ft at 6 seconds and SE 2 ft at
8 seconds. A chance of showers.
.WED THROUGH THU NIGHT...W winds 5 to 10 kt. Seas 2 to 4 ft. Wave
Detail: SW 4 ft at 7 seconds and SE 1 foot at 9 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.

$$

ANZ230-300600-
Boston Harbor-
104 PM EDT Sun Jun 29 2025

.THIS AFTERNOON...E winds 5 to 10 kt. Waves 1 foot or less.
.TONIGHT...E winds around 5 kt, becoming NW around 5 kt after
midnight. Waves 1 foot or less. Patchy fog after midnight with
vsby 1 NM or less.
.MON...NE winds around 5 kt, becoming E in the afternoon. Waves
1 foot or less, then around 2 ft in the afternoon. Patchy fog in
the morning with vsby 1 to 3 NM.
.MON NIGHT...S winds 5 to 10 kt. Waves around 2 ft in the
evening, then 1 foot or less.
.TUE AND TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt.
Waves around 2 ft. A chance of showers in the morning. Showers
likely through the night, then a chance of showers after
midnight.
.WED THROUGH THU NIGHT...W winds 5 to 10 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.

$$

ANZ236-300600-
Narragansett Bay-
104 PM EDT Sun Jun 29 2025

.THIS AFTERNOON...SW winds 5 to 10 kt. Waves around 2 ft.
.TONIGHT...W winds 5 to 10 kt, becoming N after midnight. Waves
around 2 ft. Patchy fog after midnight with vsby 1 NM or less.
.MON...NE winds around 5 kt, becoming S in the afternoon. Waves
around 2 ft. Patchy fog in the morning with vsby 1 NM or less.
.MON NIGHT...S winds 5 to 10 kt. Waves around 2 ft.
.TUE AND TUE NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt.
Waves 2 to 4 ft. A chance of showers.
.WED THROUGH THU NIGHT...W winds 5 to 10 kt. Waves 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.

$$

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