849
FZUS51 KBOX 040504
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
104 AM EDT Wed Jun 4 2025

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

ANZ200-041800-
104 AM EDT Wed Jun 4 2025

.Synopsis for Massachusetts and Rhode Island coastal waters...
High pres dominates into Wed. A cold front arrives late week with a
chance for showers and storms.

$$

ANZ250-041800-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
104 AM EDT Wed Jun 4 2025

.REST OF TONIGHT...SW winds around 10 kt with gusts up to 20 kt.
Seas 2 to 3 ft. Wave Detail: S 2 ft at 4 seconds and E 2 ft at
7 seconds.
.WED...S winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas 2 to 3 ft. Wave Detail: S 3 ft at 4 seconds and E 1 foot at
8 seconds.
.WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft. Wave Detail: S 3 ft at 5 seconds and E 1 foot at
8 seconds.
.THU...SW winds 5 to 10 kt, becoming S 10 to 15 kt in the
afternoon. Seas 2 to 3 ft. Wave Detail: S 2 ft at 4 seconds and E
2 ft at 8 seconds.
.THU NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 2 to 3 ft. Wave Detail: S 2 ft at 4 seconds and E
2 ft at 8 seconds.
.FRI AND FRI NIGHT...S winds around 10 kt. Seas 2 to 3 ft. Wave
Detail: SE 2 ft at 3 seconds and W 2 ft at 3 seconds. A chance of
showers.
.SAT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Showers likely. Vsby 1 to 3 NM.
.SAT NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft. Showers likely. Vsby 1 to 3 NM.
.SUN...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. A chance of showers.
.SUN NIGHT...W winds around 10 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.

$$

ANZ251-041800-
Massachusetts Bay and Ipswich Bay-
104 AM EDT Wed Jun 4 2025

.REST OF TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: S 1 foot at 3 seconds and E 1 foot at 7 seconds.
.WED...SW winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: S 2 ft
at 4 seconds and E 1 foot at 7 seconds.
.WED NIGHT...S winds 10 to 15 kt with gusts up to 20 kt, becoming
SW 5 to 10 kt after midnight. Seas around 2 ft. Wave Detail: S
2 ft at 4 seconds and E 1 foot at 8 seconds.
.THU...SW winds 5 to 10 kt, becoming S 10 to 15 kt in the
afternoon. Seas around 2 ft. Wave Detail: S 2 ft at 3 seconds and
E 2 ft at 8 seconds.
.THU NIGHT...SW winds 10 to 15 kt, becoming W 5 to 10 kt after
midnight. Seas around 2 ft. Wave Detail: S 2 ft at 4 seconds and
E 2 ft at 8 seconds.
.FRI AND FRI NIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: SE 2 ft at 4 seconds and E 2 ft at 8 seconds. A chance of
showers and tstms.
.SAT AND SAT NIGHT...S winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. Showers likely. Vsby 1 to 3 NM.
.SUN...W winds 10 to 15 kt. Seas around 2 ft. A chance of
showers.
.SUN NIGHT...W winds around 10 kt. Seas around 2 ft.

Winds and seas higher in and near tstms.

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.

$$

ANZ231-041800-
Cape Cod Bay-
104 AM EDT Wed Jun 4 2025

.REST OF TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: SW 1 foot at 2 seconds and SE 1 foot at 7 seconds.
.WED...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 20 kt in the afternoon. Seas 1 foot or less, then around
2 ft in the afternoon. Wave Detail: SW 1 foot at 2 seconds and SE
1 foot at 7 seconds, becoming SW 1 foot at 3 seconds and SE
1 foot at 7 seconds.
.WED NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas around 2 ft. Wave Detail: S 2 ft at 4 seconds and E
1 foot at 8 seconds.
.THU...SW winds 5 to 10 kt, becoming S 10 to 15 kt in the
afternoon. Seas 1 foot or less, then around 2 ft in the
afternoon. Wave Detail: SW 1 foot at 2 seconds and S 1 foot at
5 seconds, becoming S 1 foot at 4 seconds and E 1 foot at
8 seconds.
.THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. Seas around 2 ft. Wave
Detail: S 1 foot at 4 seconds and E 1 foot at 8 seconds.
.FRI...W winds 5 to 10 kt, becoming SE in the afternoon. Seas
1 foot or less, then around 2 ft in the afternoon. Wave Detail: W
1 foot at 2 seconds and S 1 foot at 5 seconds, becoming W 1 foot
at 3 seconds and SE 1 foot at 7 seconds.
.FRI NIGHT...S winds around 10 kt. Seas around 2 ft. A chance of
showers.
.SAT THROUGH SUN...NW winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. A chance of showers. Vsby 1 to 3 NM.
.SUN NIGHT...SW winds 5 to 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.

$$

ANZ254-041800-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
104 AM EDT Wed Jun 4 2025

.REST OF TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: S 2 ft at 7 seconds and SW 1 foot at 2 seconds.
.WED...SW 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: SW
2 ft at 3 seconds and S 2 ft at 7 seconds.
.WED NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and S
2 ft at 7 seconds.
.THU...SW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and E 2 ft at
8 seconds.
.THU NIGHT THROUGH FRI NIGHT...SW winds 10 to 15 kt with gusts up
to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and E
2 ft at 8 seconds.
.SAT THROUGH SUN...SW winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 4 ft. Wave Detail: S 4 ft at 9 seconds and SW 3 ft at
4 seconds. A chance of showers. Vsby 1 to 3 NM.
.SUN NIGHT...SW winds around 10 kt. Seas 3 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.

$$

ANZ255-041800-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
104 AM EDT Wed Jun 4 2025

.REST OF TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: S 2 ft at 7 seconds and SW 1 foot at 2 seconds.
.WED...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft
at 3 seconds and SE 2 ft at 7 seconds.
.WED NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail:
SW 3 ft at 4 seconds and SE 2 ft at 7 seconds.
.THU...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 7 seconds.
.THU NIGHT THROUGH FRI NIGHT...SW winds 10 to 15 kt with gusts up
to 20 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 6 seconds and E
2 ft at 8 seconds.
.SAT...S winds around 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. Wave Detail: S 4 ft at 9 seconds and SW 3 ft at 5 seconds.
A chance of showers.
.SAT NIGHT AND SUN...S winds 10 to 15 kt, becoming SW. Gusts up
to 20 kt. Seas 3 to 5 ft. A chance of showers.
.SUN NIGHT...SW winds 10 to 15 kt. Seas 3 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.

$$

ANZ256-041800-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
104 AM EDT Wed Jun 4 2025

.REST OF TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: SE 2 ft at 7 seconds and SW 1 foot at 3 seconds.
.WED...SW winds 5 to 10 kt, increasing to 10 to 15 kt in the
afternoon. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 3 seconds and
SE 2 ft at 7 seconds.
.WED NIGHT...SW winds 10 to 15 kt. Seas around 3 ft. Wave Detail:
SW 3 ft at 4 seconds and SE 2 ft at 7 seconds.
.THU...SW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas around 3 ft. Wave Detail: SE 3 ft at 7 seconds.
.THU NIGHT AND FRI...SW winds 10 to 15 kt with gusts up to 20 kt.
Seas around 3 ft. Wave Detail: SW 3 ft at 5 seconds and E 2 ft at
8 seconds.
.FRI NIGHT...SW winds around 15 kt with gusts up to 20 kt. Seas
around 3 ft. Wave Detail: SW 3 ft at 5 seconds and E 2 ft at
8 seconds. A chance of showers after midnight.
.SAT THROUGH SUN...SW winds 10 to 15 kt with gusts up to 20 kt.
Seas 3 to 5 ft. A chance of showers.
.SUN NIGHT...W winds 10 to 15 kt. Seas 3 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.

$$

ANZ232-041800-
Nantucket Sound-
104 AM EDT Wed Jun 4 2025

.REST OF TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: SW 1 foot at 2 seconds and SE 1 foot at 7 seconds.
.WED...SW winds 5 to 10 kt, increasing to 10 to 15 kt in the
afternoon. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds
and SE 1 foot at 7 seconds.
.WED NIGHT...SW winds 10 to 15 kt. Seas around 2 ft. Wave Detail:
SW 2 ft at 3 seconds and SE 1 foot at 7 seconds.
.THU...SW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas 2 to 3 ft. Wave Detail: SW 2 ft at 3 seconds and SE 1 foot
at 7 seconds.
.THU NIGHT AND FRI...SW winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. Wave Detail: SW 2 ft at 5 seconds and E 1 foot at
8 seconds.
.FRI NIGHT...SW winds 10 to 15 kt. Seas around 2 ft. Wave Detail:
S 2 ft at 5 seconds and E 1 foot at 8 seconds. A chance of
showers after midnight.
.SAT THROUGH SUN...SW winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. A chance of showers.
.SUN NIGHT...SW winds 10 to 15 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.

$$

ANZ233-041800-
Vineyard Sound-
104 AM EDT Wed Jun 4 2025

.REST OF TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: SW 1 foot at 3 seconds and SE 1 foot at 7 seconds.
.WED...SW winds 5 to 10 kt. Gusts up to 20 kt in the afternoon.
Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and SE 1 foot
at 7 seconds.
.WED NIGHT...SW winds around 10 kt. Seas around 2 ft. Wave
Detail: SW 2 ft at 4 seconds and S 1 foot at 7 seconds.
.THU...SW winds 10 to 15 kt. Seas around 2 ft. Wave Detail: SW
2 ft at 4 seconds and S 1 foot at 7 seconds.
.THU NIGHT AND FRI...SW winds 10 to 15 kt with gusts up to 20 kt.
Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds.
.FRI NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas around 2 ft. Wave Detail: SW 2 ft at 5 seconds and
S 1 foot at 8 seconds. A chance of showers after midnight.
.SAT THROUGH SUN...SW winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. A chance of showers.
.SUN 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.

$$

ANZ234-041800-
Buzzards Bay-
104 AM EDT Wed Jun 4 2025

.REST OF TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: SW 1 foot at 3 seconds and SE 1 foot at 7 seconds.
.WED...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: SW
2 ft at 3 seconds and SE 1 foot at 7 seconds.
.WED NIGHT...SW winds around 10 kt. Seas around 2 ft. Wave
Detail: S 2 ft at 5 seconds and E 1 foot at 8 seconds.
.THU...SW winds 5 to 10 kt, increasing to 10 to 15 kt in the
afternoon. Seas 2 to 3 ft. Wave Detail: S 2 ft at 5 seconds and E
1 foot at 8 seconds.
.THU NIGHT AND FRI...SW winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. Wave Detail: S 2 ft at 5 seconds and E 1 foot at
8 seconds.
.FRI NIGHT...SW winds 10 to 15 kt. Seas around 2 ft. Wave Detail:
SE 2 ft at 7 seconds and SE 1 foot at 15 seconds. A chance of
showers after midnight.
.SAT THROUGH SUN...W winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. A chance of showers.
.SUN NIGHT...W winds 10 to 15 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.

$$

ANZ235-041800-
Rhode Island Sound-
104 AM EDT Wed Jun 4 2025

.REST OF TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: SE 2 ft at 7 seconds and W 1 foot at 3 seconds.
.WED...SW winds 5 to 10 kt, increasing to 10 to 15 kt in the
afternoon. Seas around 2 ft. Wave Detail: S 2 ft at 4 seconds and
SE 2 ft at 7 seconds.
.WED NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail:
SE 3 ft at 7 seconds.
.THU...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 7 seconds.
.THU NIGHT AND FRI...SW winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. Wave Detail: SW 3 ft at 5 seconds and S 2 ft at
8 seconds.
.FRI NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 5 seconds and S
1 foot at 9 seconds. A chance of showers after midnight.
.SAT THROUGH SUN...SW winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 4 ft. A chance of showers.
.SUN 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.

$$

ANZ237-041800-
Block Island Sound-
104 AM EDT Wed Jun 4 2025

.REST OF TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: SE 2 ft at 7 seconds and W 1 foot at 3 seconds.
.WED...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW
2 ft at 3 seconds and SE 2 ft at 7 seconds.
.WED NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
SW 2 ft at 3 seconds and SE 2 ft at 7 seconds.
.THU...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: SW
2 ft at 4 seconds and S 2 ft at 7 seconds.
.THU NIGHT AND FRI...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 S 2 ft at
7 seconds.
.FRI NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 5 seconds and E
1 foot at 8 seconds. A chance of showers after midnight.
.SAT THROUGH SUN...SW winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 4 ft. A chance of showers. Vsby 1 to 3 NM.
.SUN NIGHT...W winds 5 to 10 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.

$$

ANZ230-041800-
Boston Harbor-
104 AM EDT Wed Jun 4 2025

.REST OF TONIGHT...SW winds 5 to 10 kt. Waves 1 foot or less.
.WED...SW winds 5 to 10 kt. Waves 1 foot or less, then around
2 ft in the afternoon.
.WED NIGHT...SW winds 5 to 10 kt. Waves around 2 ft in the
evening, then 1 foot or less.
.THU...SW winds around 5 kt, becoming S in the afternoon. Waves
1 foot or less.
.THU NIGHT...SW winds 5 to 10 kt, becoming W after midnight.
Waves 1 foot or less.
.FRI AND FRI NIGHT...S winds 5 to 10 kt. Waves 1 foot or less. A
chance of showers and tstms.
.SAT AND SAT NIGHT...S winds 10 to 15 kt with gusts up to 20 kt.
Waves around 2 ft. Showers likely. Vsby 1 to 3 NM.
.SUN...NW winds around 10 kt. Waves around 2 ft. A chance of
showers.
.SUN NIGHT...W winds 5 to 10 kt. Waves around 2 ft.

Winds and waves higher in and near tstms.

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.

$$

ANZ236-041800-
Narragansett Bay-
104 AM EDT Wed Jun 4 2025

.REST OF TONIGHT...SW winds around 5 kt. Waves around 2 ft.
.WED...SW winds 5 to 10 kt. Waves around 2 ft.
.WED NIGHT...SW winds 5 to 10 kt. Waves around 2 ft.
.THU...SW winds 5 to 10 kt. Waves around 2 ft.
.THU NIGHT...SW winds 10 to 15 kt, becoming W 5 to 10 kt after
midnight. Waves around 2 ft.
.FRI AND FRI NIGHT...SW winds 5 to 10 kt. Waves around 2 ft. A
chance of showers.
.SAT THROUGH SUN...NW winds 10 to 15 kt with gusts up to 20 kt.
Waves 2 to 3 ft. A chance of showers. Vsby 1 to 3 NM.
.SUN NIGHT...W winds 5 to 10 kt. Waves 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.

$$

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