HomeForecastsMassachusetts ForecastsCohasset Harbor, MA - (White Head) Coastal Forecast

Cohasset Harbor, MA - (White Head) Coastal Forecast

FZUS51 KBOX 050505
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
105 AM EDT Sun May 5 2024

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

ANZ200-051800-
105 AM EDT Sun May 5 2024

.Synopsis for Massachusetts and Rhode Island coastal waters...
High pressure begins to move east tonight, but dry weather remains
through Sunday morning. Weak low pressure system and cold front
brings rain Sunday afternoon through Monday morning. Dry weather
returns Monday evening through Tuesday. Low chance for showers mid
to late next week as several disturbances pass over the waters.

$$

ANZ250-051800-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
105 AM EDT Sun May 5 2024

.REST OF TONIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave
Detail: E 2 ft at 6 seconds and E 1 ft at 10 seconds.
.SUN...SE winds 5 to 10 kt, increasing to 10 to 15 kt in the
afternoon. Seas 2 to 3 ft. Wave Detail: E 3 ft at 10 seconds and
E 2 ft at 7 seconds.
.SUN NIGHT...S winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: E
3 ft at 10 seconds and SE 2 ft at 4 seconds. A chance of showers
in the evening, then showers after midnight. Vsby 1 to 3 NM.
.MON...S winds around 10 kt. Seas 3 to 4 ft. Wave Detail: E 3 ft
at 10 seconds and S 2 ft at 4 seconds. A chance of showers. Vsby
1 NM or less in the morning.
.MON NIGHT...SW winds around 10 kt, becoming NW after midnight.
Seas 2 to 3 ft. Wave Detail: E 3 ft at 10 seconds and SW 2 ft at
4 seconds.
.TUE...N winds 5 to 10 kt, becoming SE in the afternoon. Seas
2 to 3 ft. Wave Detail: E 3 ft at 11 seconds and NW 1 ft at
3 seconds.
.TUE NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of
showers after midnight.
.WED THROUGH THU...E winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. A chance of showers.
.THU NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 4 ft. Showers likely.

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.

$$

ANZ251-051800-
Massachusetts Bay and Ipswich Bay-
105 AM EDT Sun May 5 2024

.REST OF TONIGHT...E winds around 5 kt. Seas around 2 ft. Wave
Detail: E 2 ft at 6 seconds and E 1 ft at 11 seconds. Patchy fog.
Vsby 1 to 3 NM.
.SUN...SE winds 5 to 10 kt, increasing to 10 to 15 kt in the
afternoon. Seas 2 to 3 ft. Wave Detail: E 3 ft at 10 seconds and
E 2 ft at 7 seconds. A chance of showers in the afternoon.
.SUN NIGHT...S winds 10 to 15 kt, diminishing to 5 to 10 kt after
midnight. Seas 2 to 3 ft. Wave Detail: E 3 ft at 9 seconds and SE
1 ft at 5 seconds. Showers. Vsby 1 to 3 NM.
.MON...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft
at 10 seconds and SW 1 ft at 3 seconds. A chance of showers. Vsby
1 to 3 NM in the morning.
.MON NIGHT...SW winds around 10 kt, becoming NW after midnight.
Seas 2 to 3 ft. Wave Detail: E 3 ft at 10 seconds and SW 1 ft at
3 seconds.
.TUE...N winds 5 to 10 kt, becoming SE in the afternoon. Seas
around 2 ft. Wave Detail: E 2 ft at 11 seconds and E 1 ft at
2 seconds.
.TUE NIGHT...S winds 5 to 10 kt, becoming N after midnight. Seas
around 2 ft. A chance of showers after midnight.
.WED AND WED NIGHT...E winds around 10 kt with gusts up to 20 kt.
Seas around 2 ft. Showers likely.
.THU...E winds 10 to 15 kt. Seas around 2 ft. A chance of
showers.
.THU NIGHT...NE winds 10 to 15 kt. Seas 2 to 3 ft. Showers
likely.

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.

$$

ANZ231-051800-
Cape Cod Bay-
105 AM EDT Sun May 5 2024

.REST OF TONIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: E 1 ft at 3 seconds and E 1 ft at 10 seconds.
.SUN...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft
at 4 seconds and E 2 ft at 10 seconds. A chance of showers in the
afternoon.
.SUN NIGHT...S winds around 10 kt. Seas around 2 ft. Wave Detail:
E 2 ft at 9 seconds and S 1 ft at 2 seconds. A chance of showers
in the evening, then showers after midnight. Vsby 1 to 3 NM.
.MON...SW winds around 10 kt. Seas around 2 ft. Wave Detail: E
2 ft at 10 seconds and SW 1 ft at 3 seconds. Showers, mainly in
the morning with vsby 1 NM or less.
.MON NIGHT...SW winds around 10 kt, becoming W after midnight.
Seas around 2 ft. Wave Detail: E 2 ft at 10 seconds and SW 1 ft
at 3 seconds.
.TUE...N winds 5 to 10 kt, becoming E in the afternoon. Seas
around 2 ft in the morning, then 1 foot or less. Wave Detail: E
2 ft at 10 seconds and NW 1 ft at 2 seconds, becoming N 1 ft at
3 seconds and S 1 ft at 5 seconds.
.TUE NIGHT...SW winds 5 to 10 kt. Seas 1 foot or less. A chance
of showers after midnight.
.WED THROUGH THU...E winds 5 to 10 kt with gusts up to 20 kt.
Seas around 2 ft. A chance of showers.
.THU NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas
around 2 ft. Showers likely.

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.

$$

ANZ254-051800-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
105 AM EDT Sun May 5 2024

.REST OF TONIGHT...E winds around 10 kt. Seas 2 to 3 ft. Wave
Detail: NE 3 ft at 6 seconds and E 1 ft at 10 seconds.
.SUN...SE winds around 10 kt. Seas 2 to 4 ft. Wave Detail: E 3 ft
at 7 seconds and E 3 ft at 11 seconds.
.SUN NIGHT...S winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: E
4 ft at 9 seconds and S 1 ft at 3 seconds. A chance of showers in
the evening, then showers likely after midnight. Vsby 1 to 3 NM,
decreasing to 1 NM or less after midnight.
.MON...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
4 ft. Wave Detail: E 4 ft at 10 seconds and S 3 ft at 5 seconds.
Showers likely, mainly in the morning with vsby 1 NM or less.
.MON NIGHT...W winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E
3 ft at 11 seconds and SW 2 ft at 4 seconds.
.TUE...N winds 5 to 10 kt, becoming NE in the afternoon. Seas
2 to 4 ft. Wave Detail: E 3 ft at 11 seconds and S 2 ft at
5 seconds.
.TUE NIGHT...S winds 5 to 10 kt, becoming SW after midnight. Seas
2 to 3 ft. A chance of showers after midnight.
.WED THROUGH THU NIGHT...SE winds 10 to 15 kt with gusts up to
20 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.

$$

ANZ255-051800-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
105 AM EDT Sun May 5 2024

.REST OF TONIGHT...E winds around 10 kt. Seas 2 to 3 ft. Wave
Detail: E 3 ft at 6 seconds and E 1 ft at 11 seconds.
.SUN...SE winds around 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft
at 6 seconds and E 1 ft at 10 seconds.
.SUN NIGHT...S winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SE
3 ft at 6 seconds and E 3 ft at 10 seconds. Showers likely after
midnight with vsby 1 NM or less.
.MON...SW winds around 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. Wave Detail: SW 4 ft at 4 seconds and E 3 ft at 10 seconds.
Showers likely, mainly in the morning with vsby 1 NM or less.
.MON NIGHT...SW winds 10 to 15 kt, becoming W 5 to 10 kt after
midnight. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and E
3 ft at 10 seconds.
.TUE...N winds 5 to 10 kt, becoming E in the afternoon. Seas 2 to
3 ft. Wave Detail: E 3 ft at 11 seconds and SW 2 ft at 5 seconds.
.TUE NIGHT...S winds 5 to 10 kt, becoming SW after midnight. Seas
2 to 3 ft. A chance of showers after midnight.
.WED THROUGH THU NIGHT...SE winds 10 to 15 kt with gusts up to
20 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.

$$

ANZ256-051800-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
105 AM EDT Sun May 5 2024

.REST OF TONIGHT...E winds around 10 kt with gusts up to 20 kt.
Seas around 2 ft. Wave Detail: E 2 ft at 5 seconds and SE 1 ft at
10 seconds.
.SUN...SE winds around 10 kt. Seas 2 to 3 ft. Wave Detail: SE
2 ft at 5 seconds and E 1 ft at 10 seconds.
.SUN NIGHT...S winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SE
3 ft at 10 seconds and SE 2 ft at 6 seconds. A chance of showers
in the evening, then showers likely after midnight. Vsby 1 NM or
less.
.MON...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Wave Detail: S 3 ft at 4 seconds and E 3 ft at 10 seconds.
Showers, mainly in the morning with vsby 1 NM or less.
.MON NIGHT...SW winds 10 to 15 kt, becoming W 5 to 10 kt after
midnight. Seas 2 to 3 ft. Wave Detail: S 3 ft at 4 seconds and E
2 ft at 10 seconds.
.TUE...N winds 5 to 10 kt, becoming SE in the afternoon. Seas
2 to 3 ft. Wave Detail: S 2 ft at 5 seconds and E 2 ft at
10 seconds.
.TUE NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of
showers after midnight.
.WED THROUGH THU...E winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. A chance of showers.
.THU NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 4 ft. Showers likely.

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.

$$

ANZ232-051800-
Nantucket Sound-
105 AM EDT Sun May 5 2024

.REST OF TONIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: E 2 ft at 4 seconds and E 1 ft at 10 seconds.
.SUN...SE winds around 10 kt. Seas around 2 ft. Wave Detail: SE
2 ft at 5 seconds and E 1 ft at 10 seconds.
.SUN NIGHT...S winds 10 to 15 kt. Seas around 2 ft. Wave Detail:
S 2 ft at 3 seconds and E 2 ft at 10 seconds. A chance of showers
in the evening, then showers after midnight with vsby 1 NM or
less.
.MON...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 2 ft at 10 seconds.
Showers, mainly in the morning with vsby 1 NM or less.
.MON NIGHT...SW winds 10 to 15 kt, becoming W 5 to 10 kt after
midnight. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and
E 2 ft at 10 seconds.
.TUE...N winds 5 to 10 kt, becoming E in the afternoon. Seas
around 2 ft in the morning, then 1 foot or less. Wave Detail: E
2 ft at 11 seconds and NE 1 ft at 2 seconds, becoming NE 1 ft at
2 seconds and NW 1 ft at 3 seconds.
.TUE NIGHT...SW winds 5 to 10 kt. Seas 1 foot or less. A chance
of showers after midnight.
.WED THROUGH THU NIGHT...E winds 10 to 15 kt with gusts up to
20 kt. Seas 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.

$$

ANZ233-051800-
Vineyard Sound-
105 AM EDT Sun May 5 2024

.REST OF TONIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: E 1 ft at 4 seconds and SE 1 ft at 11 seconds.
.SUN...SE winds around 10 kt. Seas around 2 ft. Wave Detail: SE
1 ft at 4 seconds and SE 1 ft at 11 seconds.
.SUN NIGHT...S winds 10 to 15 kt. Seas around 2 ft. Wave Detail:
S 1 ft at 3 seconds and E 1 ft at 6 seconds. A chance of showers
in the evening, then showers likely after midnight. Vsby 1 to
3 NM, decreasing to 1 NM or less after midnight.
.MON...SW winds 10 to 15 kt. Seas around 2 ft. Wave Detail: S
2 ft at 4 seconds and E 1 ft at 10 seconds. Showers, mainly in
the morning with vsby 1 NM or less.
.MON NIGHT...SW winds 10 to 15 kt, becoming W 5 to 10 kt after
midnight. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and
E 1 ft at 10 seconds.
.TUE...N winds 5 to 10 kt, becoming SE in the afternoon. Seas
1 foot or less. Wave Detail: N 1 ft at 3 seconds and S 1 ft at
5 seconds.
.TUE NIGHT...SW winds 5 to 10 kt. Seas 1 foot or less. A chance
of showers after midnight.
.WED THROUGH THU...E winds 5 to 10 kt with gusts up to 20 kt.
Seas around 2 ft. A chance of showers.
.THU NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas
around 2 ft. Showers likely.

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.

$$

ANZ234-051800-
Buzzards Bay-
105 AM EDT Sun May 5 2024

.REST OF TONIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: E 1 ft at 2 seconds and SE 1 ft at 5 seconds.
.SUN...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE
1 ft at 4 seconds and E 1 ft at 10 seconds.
.SUN NIGHT...S winds 10 to 15 kt. Seas around 2 ft. Wave Detail:
SE 1 ft at 3 seconds and E 1 ft at 10 seconds. A chance of
showers in the evening, then showers likely after midnight. Vsby
1 to 3 NM, decreasing to 1 NM or less after midnight.
.MON...SW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and E 1 ft at
10 seconds. Showers likely, mainly in the morning with vsby 1 NM
or less.
.MON NIGHT...SW winds 10 to 15 kt, becoming W 5 to 10 kt after
midnight. Seas around 2 ft in the evening, then 1 foot or less.
Wave Detail: SW 2 ft at 4 seconds and E 1 ft at 10 seconds,
becoming SW 1 ft at 4 seconds and E 1 ft at 11 seconds.
.TUE...N winds 5 to 10 kt, becoming SE in the afternoon. Seas
1 foot or less. Wave Detail: N 1 ft at 3 seconds and S 1 ft at
5 seconds.
.TUE NIGHT...SW winds 5 to 10 kt. Seas 1 foot or less. A chance
of showers after midnight.
.WED THROUGH THU...E winds 5 to 10 kt with gusts up to 20 kt.
Seas around 2 ft. A chance of showers.
.THU NIGHT...E winds around 10 kt with gusts up to 20 kt. Seas
around 2 ft. Showers likely.

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.

$$

ANZ235-051800-
Rhode Island Sound-
105 AM EDT Sun May 5 2024

.REST OF TONIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: SE 2 ft at 5 seconds and SE 1 ft at 11 seconds.
.SUN...SE winds 10 to 15 kt. Seas around 2 ft. Wave Detail: SE
2 ft at 5 seconds and SE 1 ft at 11 seconds. A chance of showers
in the afternoon.
.SUN NIGHT...S winds 10 to 15 kt. Seas around 2 ft. Wave Detail:
SE 2 ft at 5 seconds and SE 1 ft at 10 seconds. A chance of
showers in the evening, then showers after midnight. Vsby 1 to
3 NM, decreasing to 1 NM or less after midnight.
.MON...SW winds 10 to 15 kt. Gusts up to 20 kt in the morning.
Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 ft
at 5 seconds. Showers likely, mainly in the morning with vsby
1 NM or less.
.MON NIGHT...SW winds 10 to 15 kt, becoming W 5 to 10 kt after
midnight. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and
E 1 ft at 10 seconds.
.TUE...N winds 5 to 10 kt, becoming SE in the afternoon. Seas
around 2 ft. Wave Detail: S 2 ft at 5 seconds and N 1 ft at
2 seconds.
.TUE NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. A chance of
showers after midnight.
.WED THROUGH THU...E winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. A chance of showers.
.THU NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft. Showers likely.

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.

$$

ANZ237-051800-
Block Island Sound-
105 AM EDT Sun May 5 2024

.REST OF TONIGHT...E winds around 10 kt. Seas around 2 ft. Wave
Detail: SE 2 ft at 5 seconds and SE 1 ft at 10 seconds.
.SUN...SE winds around 10 kt. Seas around 2 ft. Wave Detail: SE
2 ft at 5 seconds and SE 1 ft at 10 seconds. A chance of showers
in the afternoon.
.SUN NIGHT...S winds 10 to 15 kt. Seas around 2 ft. Wave Detail:
SE 2 ft at 5 seconds and SE 1 ft at 9 seconds. Showers likely.
Vsby 1 to 3 NM, decreasing to 1 NM or less after midnight.
.MON...SW winds 10 to 15 kt. Seas around 2 ft. Wave Detail: SW
2 ft at 4 seconds and E 2 ft at 10 seconds. Showers likely,
mainly in the morning with vsby 1 NM or less.
.MON NIGHT...SW winds 5 to 10 kt, becoming W after midnight. Seas
around 2 ft. Wave Detail: SW 2 ft at 4 seconds and E 1 ft at
10 seconds.
.TUE...N winds around 5 kt, becoming S in the afternoon. Seas
around 2 ft. Wave Detail: S 2 ft at 5 seconds and E 2 ft at
10 seconds.
.TUE NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. A chance of
showers after midnight.
.WED THROUGH THU...E winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. A chance of showers.
.THU NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft. Showers likely.

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.

$$

ANZ230-051800-
Boston Harbor-
105 AM EDT Sun May 5 2024

.REST OF TONIGHT...E winds around 5 kt. Waves 1 foot or less.
Patchy fog. Vsby 1 to 3 NM.
.SUN...SE winds 5 to 10 kt. Waves around 2 ft. A chance of
showers in the afternoon.
.SUN NIGHT...S winds 5 to 10 kt. Waves around 2 ft. Showers. Vsby
1 to 3 NM.
.MON...SW winds around 5 kt, increasing to 10 to 15 kt in the
afternoon. Waves 1 foot or less. A chance of showers. Vsby 1 to
3 NM in the morning.
.MON NIGHT...SW winds 5 to 10 kt, becoming NW after midnight.
Waves 1 foot or less.
.TUE...N winds 5 to 10 kt, becoming SE 10 to 15 kt in the
afternoon. Waves 1 foot or less.
.TUE NIGHT...S winds 5 to 10 kt, becoming N after midnight. Waves
1 foot or less. A chance of showers after midnight.
.WED...E winds 5 to 10 kt with gusts up to 20 kt. Waves around
2 ft. Showers likely.
.WED NIGHT THROUGH THU NIGHT...NE winds around 10 kt. Waves 2 to
3 ft. Showers likely.

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.

$$

ANZ236-051800-
Narragansett Bay-
105 AM EDT Sun May 5 2024

.REST OF TONIGHT...E winds 5 to 10 kt. Waves 1 foot or less.
Patchy fog. Vsby 1 to 3 NM.
.SUN...SE winds 5 to 10 kt. Waves 1 foot or less. A chance of
showers in the afternoon.
.SUN NIGHT...S winds around 10 kt. Waves around 2 ft. Showers
likely. Vsby 1 to 3 NM, decreasing to 1 NM or less after
midnight.
.MON...SW winds 5 to 10 kt, increasing to 10 to 15 kt in the
afternoon. Waves around 2 ft. Showers likely, mainly in the
morning with vsby 1 NM or less.
.MON NIGHT...SW winds 10 to 15 kt, becoming W 5 to 10 kt after
midnight. Waves around 2 ft.
.TUE...N winds 5 to 10 kt, becoming S 10 to 15 kt in the
afternoon. Waves around 2 ft.
.TUE NIGHT...SW winds 5 to 10 kt. Waves around 2 ft. A chance of
showers after midnight.
.WED THROUGH THU...E winds 5 to 10 kt with gusts up to 20 kt.
Waves around 2 ft. A chance of showers.
.THU NIGHT...NE winds around 10 kt with gusts up to 20 kt. Waves
2 to 3 ft. Showers likely.

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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