620
FZUS51 KBOX 141106
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
706 AM EDT Mon Jul 14 2025

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

ANZ200-150000-
706 AM EDT Mon Jul 14 2025

.Synopsis for Massachusetts and Rhode Island coastal waters...
Cold front moves through Mon. Generally unsettled through the week
with periods of isolated showers.

$$

ANZ250-150000-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
706 AM EDT Mon Jul 14 2025

.TODAY...S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 20 kt this afternoon. Seas around 2 ft. Wave Detail: S 2 ft
at 5 seconds and E 1 foot at 8 seconds. Patchy fog. A slight
chance of showers and tstms this afternoon. Vsby 1 NM or less,
increasing to 1 to 3 NM this afternoon.
.TONIGHT...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.
Patchy fog. Vsby 1 to 3 NM.
.TUE...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft
at 7 seconds and SE 2 ft at 9 seconds.
.TUE 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 3 seconds and
SE 2 ft at 8 seconds.
.WED AND 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 E 1 foot at
6 seconds.
.THU AND THU NIGHT...S winds 10 to 15 kt with gusts up to 25 kt.
Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and E 1 foot at
6 seconds.
.FRI AND FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt,
becoming NW. Seas 2 to 3 ft. A chance of showers.

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.

$$

ANZ251-150000-
Massachusetts Bay and Ipswich Bay-
706 AM EDT Mon Jul 14 2025

.TODAY...S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 20 kt this afternoon. Seas around 2 ft. Wave Detail: SE
2 ft at 5 seconds and SE 1 foot at 9 seconds. Patchy fog this
morning. A slight chance of showers and tstms this afternoon.
Vsby 1 NM or less this morning.
.TONIGHT...S winds 10 to 15 kt, becoming SW 5 to 10 kt after
midnight. Seas around 2 ft. Wave Detail: S 2 ft at 3 seconds and
E 1 foot at 7 seconds.
.TUE...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW
1 foot at 3 seconds and E 1 foot at 6 seconds.
.TUE NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
S 1 foot at 3 seconds and E 1 foot at 6 seconds.
.WED AND WED NIGHT...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 foot
at 6 seconds.
.THU AND THU NIGHT...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 foot
at 6 seconds.
.FRI...SW winds around 10 kt. Seas around 2 ft. A chance of
showers and tstms.
.FRI NIGHT...N winds around 10 kt. Seas around 2 ft. A chance of
showers.

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.

$$

ANZ231-150000-
Cape Cod Bay-
706 AM EDT Mon Jul 14 2025

.TODAY...S winds 5 to 10 kt. Seas 1 foot or less, then around
2 ft this afternoon. Wave Detail: S 1 foot at 3 seconds and E
1 foot at 6 seconds, becoming S 1 foot at 2 seconds and E 1 foot
at 6 seconds. Patchy fog this morning with vsby 1 NM or less.
.TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW
1 foot at 3 seconds and E 1 foot at 7 seconds. Patchy fog after
midnight. A chance of showers after midnight.
.TUE...SW winds 5 to 10 kt. Seas 1 foot or less, then around 2 ft
in the afternoon. Wave Detail: SW 1 foot at 3 seconds and E
1 foot at 6 seconds, becoming SW 1 foot at 3 seconds and E 1 foot
at 7 seconds. Patchy fog in the morning. A chance of showers in
the morning.
.TUE NIGHT...SW winds 5 to 10 kt. Seas around 2 ft in the
evening, then 1 foot or less. Wave Detail: SW 1 foot at 3 seconds
and E 1 foot at 7 seconds, becoming SW 1 foot at 3 seconds and E
1 foot at 6 seconds.
.WED AND WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt.
Seas around 2 ft. Wave Detail: SW 1 foot at 3 seconds and E
1 foot at 6 seconds.
.THU THROUGH FRI NIGHT...NW 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
1 foot 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.

$$

ANZ254-150000-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
706 AM EDT Mon Jul 14 2025

.TODAY...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft
at 6 seconds and SE 1 foot at 9 seconds. Patchy fog. Vsby 1 NM or
less.
.TONIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE
2 ft at 7 seconds and SW 1 foot at 2 seconds. Patchy fog. Vsby
1 to 3 NM.
.TUE...SW winds around 10 kt. Seas around 2 ft. Wave Detail: E
2 ft at 7 seconds and SE 2 ft at 8 seconds.
.TUE NIGHT...SW winds around 10 kt. Seas around 2 ft. Wave
Detail: SW 2 ft at 4 seconds and SE 2 ft at 6 seconds.
.WED AND 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 E 1 foot at
6 seconds.
.THU THROUGH FRI NIGHT...W winds 10 to 15 kt with gusts up to
20 kt. Seas 2 to 4 ft. Wave Detail: S 3 ft at 5 seconds and NW
2 ft at 3 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.

$$

ANZ255-150000-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
706 AM EDT Mon Jul 14 2025

.TODAY...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft
at 8 seconds. Patchy fog. Vsby 1 NM or less.
.TONIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE
2 ft at 6 seconds and SW 1 foot at 2 seconds. Patchy fog. Vsby
1 NM or less, increasing to 1 to 3 NM after midnight.
.TUE...SW winds around 10 kt. Seas around 2 ft. Wave Detail: SE
2 ft at 7 seconds and SW 1 foot at 3 seconds. Patchy fog in the
morning.
.TUE NIGHT...SW winds around 10 kt. Seas around 2 ft. Wave
Detail: SW 1 foot at 3 seconds and SE 1 foot at 6 seconds.
.WED AND WED NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave
Detail: SW 3 ft at 4 seconds and E 1 foot at 6 seconds.
.THU...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. Wave Detail: S 4 ft at 6 seconds and W 1 foot at 3 seconds.
.THU NIGHT THROUGH FRI NIGHT...W winds 15 to 20 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.

$$

ANZ256-150000-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
706 AM EDT Mon Jul 14 2025

.TODAY...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE
2 ft at 8 seconds. Patchy fog. Vsby 1 NM or less, increasing to
1 to 3 NM this afternoon.
.TONIGHT...SW winds around 10 kt. Seas around 2 ft. Wave Detail:
S 2 ft at 6 seconds and SW 1 foot at 2 seconds. Patchy fog. Vsby
1 to 3 NM.
.TUE...SW winds around 10 kt. Seas around 2 ft. Wave Detail: S
2 ft at 6 seconds and SW 1 foot at 3 seconds. A chance of
showers. Patchy fog in the morning.
.TUE NIGHT...SW winds around 10 kt. Seas around 2 ft. Wave
Detail: SW 2 ft at 4 seconds and E 1 foot at 6 seconds.
.WED AND WED NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave
Detail: SW 3 ft at 5 seconds and E 1 foot at 6 seconds.
.THU THROUGH FRI NIGHT...W winds 15 to 20 kt. Seas 3 to 5 ft.
Wave Detail: S 4 ft at 6 seconds and E 1 foot 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.

$$

ANZ232-150000-
Nantucket Sound-
706 AM EDT Mon Jul 14 2025

.TODAY...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW
1 foot at 2 seconds and SE 1 foot at 6 seconds. Patchy fog this
morning with vsby 1 NM or less.
.TONIGHT...SW winds around 10 kt. Seas around 2 ft. Wave Detail:
SW 1 foot at 3 seconds and E 1 foot at 6 seconds. Patchy fog.
Vsby 1 to 3 NM.
.TUE...SW winds around 10 kt. Seas around 2 ft. Wave Detail: SW
1 foot at 4 seconds and E 1 foot at 6 seconds. Patchy fog in the
morning.
.TUE NIGHT...SW winds around 10 kt. Seas around 2 ft. Wave
Detail: SW 1 foot at 4 seconds and E 1 foot at 6 seconds.
.WED AND WED NIGHT...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 foot
at 6 seconds.
.THU THROUGH FRI NIGHT...W 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
1 foot 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.

$$

ANZ233-150000-
Vineyard Sound-
706 AM EDT Mon Jul 14 2025

.TODAY...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE
1 foot at 6 seconds and SE 1 foot at 9 seconds. Patchy fog this
morning with vsby 1 NM or less.
.TONIGHT...SW winds around 10 kt. Seas around 2 ft. Wave Detail:
SW 1 foot at 3 seconds and SE 1 foot at 6 seconds. Patchy fog. A
chance of showers after midnight.
.TUE...SW winds around 10 kt. Seas around 2 ft. Wave Detail: SW
1 foot at 4 seconds and SE 1 foot at 6 seconds. Patchy fog in the
morning. A chance of showers in the morning.
.TUE NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
SW 1 foot at 4 seconds and SE 1 foot at 6 seconds.
.WED AND WED NIGHT...SW winds 10 to 15 kt. Seas around 2 ft. Wave
Detail: SW 2 ft at 5 seconds and SE 1 foot at 6 seconds.
.THU THROUGH FRI NIGHT...NW 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 SW
1 foot at 3 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.

$$

ANZ234-150000-
Buzzards Bay-
706 AM EDT Mon Jul 14 2025

.TODAY...S winds 5 to 10 kt. Seas 1 foot or less, then around
2 ft this afternoon. Wave Detail: SE 1 foot at 6 seconds and SE
1 foot at 9 seconds, becoming SW 1 foot at 3 seconds and SE
1 foot at 6 seconds. Patchy fog this morning with vsby 1 NM or
less.
.TONIGHT...SW winds around 10 kt. Seas around 2 ft in the
evening, then 1 foot or less. Wave Detail: S 1 foot at 5 seconds
and SE 1 foot at 9 seconds, becoming SW 1 foot at 4 seconds and
SE 1 foot at 6 seconds. Patchy fog after midnight. A chance of
showers and tstms after midnight.
.TUE...SW winds 5 to 10 kt, increasing to 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 4 seconds and SE 1 foot at
6 seconds, becoming SW 1 foot at 4 seconds and E 1 foot at
6 seconds. Patchy fog in the morning. A chance of showers and
tstms in the morning.
.TUE NIGHT...SW winds 10 to 15 kt, diminishing to 5 to 10 kt
after midnight. 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
6 seconds.
.WED AND WED NIGHT...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 foot
at 6 seconds.
.THU AND THU 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 E 1 foot at
6 seconds.
.FRI AND FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt,
becoming NW. Seas 2 to 3 ft. A chance of showers.

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.

$$

ANZ235-150000-
Rhode Island Sound-
706 AM EDT Mon Jul 14 2025

.TODAY...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE
2 ft at 6 seconds and SE 1 foot at 9 seconds. Patchy fog. Vsby
1 NM or less, increasing to 1 to 3 NM this afternoon.
.TONIGHT...SW winds around 10 kt. Seas around 2 ft. Wave Detail:
SE 2 ft at 6 seconds and SW 1 foot at 2 seconds. Patchy fog. A
chance of showers and tstms after midnight. Vsby 1 to 3 NM.
.TUE...SW winds around 10 kt. Seas around 2 ft. Wave Detail: S
2 ft at 5 seconds and SE 1 foot at 9 seconds. A chance of
showers. A chance of tstms in the morning. Patchy fog in the
morning.
.TUE NIGHT...SW winds around 10 kt. Seas around 2 ft. Wave
Detail: SW 2 ft at 4 seconds and SE 1 foot at 6 seconds.
.WED AND WED NIGHT...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 SE 1 foot
at 6 seconds.
.THU AND THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 4 ft. Wave Detail: S 4 ft at 6 seconds and W 1 foot at
3 seconds.
.FRI...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
4 ft. A chance of showers.
.FRI NIGHT...W winds 10 to 15 kt. Seas 2 to 4 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.

$$

ANZ237-150000-
Block Island Sound-
706 AM EDT Mon Jul 14 2025

.TODAY...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE
2 ft at 6 seconds and SE 1 foot at 9 seconds. Patchy fog. Vsby
1 NM or less.
.TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE
2 ft at 6 seconds and SW 1 foot at 3 seconds. Patchy fog. A
chance of showers and tstms after midnight with vsby 1 to 3 NM.
.TUE...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE
2 ft at 6 seconds and SW 1 foot at 3 seconds. A chance of
showers. A chance of tstms in the morning. Patchy fog in the
morning.
.TUE NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
SW 1 foot at 4 seconds and SE 1 foot at 6 seconds.
.WED AND WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt.
Seas around 2 ft. Wave Detail: SE 2 ft at 6 seconds and W 1 foot
at 2 seconds.
.THU AND THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 4 ft. Wave Detail: SE 3 ft at 6 seconds and W 1 foot at
3 seconds.
.FRI AND FRI NIGHT...W winds 10 to 15 kt. Gusts up to 20 kt. Seas
2 to 4 ft. A chance of showers.

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.

$$

ANZ230-150000-
Boston Harbor-
706 AM EDT Mon Jul 14 2025

.TODAY...S winds 5 to 10 kt. Waves 1 foot or less, then around
2 ft this afternoon. Patchy fog this morning. A chance of showers
and tstms this afternoon. Vsby 1 to 3 NM this morning.
.TONIGHT...SW winds 5 to 10 kt. Waves around 2 ft in the evening,
then 1 foot or less. A chance of showers and tstms in the
evening.
.TUE...SW winds 5 to 10 kt. Waves 1 foot or less.
.TUE NIGHT...SW winds 5 to 10 kt. Waves 1 foot or less.
.WED AND WED NIGHT...SW winds 10 to 15 kt. Waves around 2 ft.
.THU THROUGH FRI NIGHT...N winds 10 to 15 kt with gusts up to
20 kt. Waves around 2 ft. A chance of showers and tstms.

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.

$$

ANZ236-150000-
Narragansett Bay-
706 AM EDT Mon Jul 14 2025

.TODAY...S winds 5 to 10 kt. Waves 1 foot or less, then around
2 ft this afternoon. Patchy fog this morning. A slight chance of
showers and tstms this afternoon. Vsby 1 NM or less this morning.
.TONIGHT...SW winds 5 to 10 kt. Waves around 2 ft. Patchy fog
after midnight. A chance of showers and tstms after midnight.
.TUE...SW winds 5 to 10 kt. Waves around 2 ft. A chance of
showers. A chance of tstms in the morning. Patchy fog in the
morning.
.TUE NIGHT...SW winds 5 to 10 kt. Waves around 2 ft in the
evening, then 1 foot or less.
.WED AND WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt.
Waves around 2 ft.
.THU AND THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt.
Waves 2 to 3 ft.
.FRI AND FRI NIGHT...W winds around 10 kt, becoming NW. Waves
around 2 ft. A chance of showers.

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.

$$

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