Coastal Waters Forecast
Issued by NWS Boston, MA

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700
FZUS51 KBOX 240806
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
406 AM EDT Fri May 24 2024

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

ANZ200-242100-
406 AM EDT Fri May 24 2024

.Synopsis for Massachusetts and Rhode Island coastal waters...
High pres nudges into the region today, but builds more
firmly overhead on Sat. A front will be nearby on Sun, which could
bring hit-or-miss showers and storms. A frontal system lifts toward
the waters on Mon and Tue bringing the risk of heavy rain and gusty
winds.

$$

ANZ250-242100-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
406 AM EDT Fri May 24 2024

.TODAY...W winds 5 to 10 kt, becoming SW 10 to 15 kt with gusts
up to 20 kt this afternoon. Seas 2 to 3 ft. Wave Detail: SW 2 ft
at 3 seconds and E 1 foot at 7 seconds.
.TONIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming N
5 to 10 kt after midnight. Seas 2 to 3 ft. Wave Detail: SW 2 ft
at 4 seconds and N 1 foot at 3 seconds.
.SAT...N winds 5 to 10 kt, becoming SE in the afternoon. Seas
around 2 ft. Wave Detail: N 1 foot at 4 seconds and SE 1 foot at
5 seconds.
.SAT NIGHT...S winds 10 to 15 kt. Seas around 2 ft. Wave Detail:
S 2 ft at 3 seconds and N 1 foot at 3 seconds.
.SUN AND SUN NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave
Detail: S 2 ft at 3 seconds and SE 1 foot at 9 seconds.
.MON...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. Wave Detail: SE 2 ft at 3 seconds and SE 1 foot at
9 seconds.
.MON NIGHT AND TUE...S winds 10 to 15 kt with gusts up to 20 kt.
Seas 4 to 6 ft. Rain likely.
.TUE NIGHT...SW winds 10 to 15 kt with gusts up 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.

$$

ANZ251-242100-
Massachusetts Bay and Ipswich Bay-
406 AM EDT Fri May 24 2024

.TODAY...W winds 5 to 10 kt, becoming SW 10 to 15 kt with gusts
up to 20 kt this afternoon. Seas 1 foot or less, then around 2 ft
this afternoon. Wave Detail: W 1 foot at 2 seconds and S 1 foot
at 3 seconds, becoming SW 1 foot at 3 seconds and E 1 foot at
7 seconds.
.TONIGHT...W winds 10 to 15 kt, becoming N 5 to 10 kt after
midnight. Seas around 2 ft. Wave Detail: N 1 foot at 2 seconds
and S 1 foot at 3 seconds.
.SAT...N winds 5 to 10 kt, becoming SE in the afternoon. Seas
1 foot or less, then around 2 ft in the afternoon. Wave Detail: N
1 foot at 3 seconds and S 1 foot at 5 seconds, becoming N 1 foot
at 3 seconds and SE 1 foot at 5 seconds.
.SAT NIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
SE 1 foot at 3 seconds and NE 1 foot at 4 seconds.
.SUN AND SUN NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: E 1 foot at 4 seconds and E 1 foot at 9 seconds.
.MON...SE 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 SE 1 foot at
9 seconds. A chance of rain.
.MON NIGHT AND TUE...S winds 10 to 15 kt with gusts up to 20 kt.
Seas 3 to 5 ft. Rain.
.TUE NIGHT...SW 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.

$$

ANZ231-242100-
Cape Cod Bay-
406 AM EDT Fri May 24 2024

.TODAY...W winds around 5 kt, becoming SW 10 to 15 kt with gusts
up to 20 kt this afternoon. Seas 1 foot or less, then around 2 ft
this afternoon. Wave Detail: SW 1 foot at 3 seconds and E 1 foot
at 7 seconds, becoming SW 1 foot at 4 seconds and E 1 foot at
7 seconds.
.TONIGHT...SW winds 10 to 15 kt, becoming N 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 E 1 foot at 7 seconds,
becoming N 1 foot at 3 seconds and S 1 foot at 4 seconds.
.SAT...N winds around 5 kt, becoming E in the afternoon. Seas
1 foot or less. Wave Detail: N 1 foot at 3 seconds and S 1 foot
at 5 seconds.
.SAT NIGHT...S winds 5 to 10 kt. Seas 1 foot or less. Wave
Detail: S 1 foot at 2 seconds and N 1 foot at 4 seconds.
.SUN AND SUN NIGHT...SE winds 5 to 10 kt. Seas 1 foot or less.
Wave Detail: SW 1 foot at 3 seconds and NE 1 foot at 4 seconds.
.MON...SE winds 10 to 15 kt with gusts up to 20 kt. Seas around
2 ft. Wave Detail: SE 1 foot at 3 seconds and SE 1 foot at
9 seconds.
.MON NIGHT AND TUE...S winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. Rain likely.
.TUE 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.

$$

ANZ254-242100-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
406 AM EDT Fri May 24 2024

.TODAY...W winds 5 to 10 kt, becoming SW 10 to 15 kt with gusts
up to 20 kt this afternoon. Seas 2 to 3 ft. Wave Detail: S 2 ft
at 5 seconds and W 1 foot at 3 seconds. Patchy fog. Vsby 1 NM or
less.
.TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming
N 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave Detail: SW 2 ft
at 4 seconds and E 1 foot at 7 seconds. Patchy fog in the
evening.
.SAT...N winds 5 to 10 kt, becoming E in the afternoon. Seas
around 2 ft. Wave Detail: S 2 ft at 6 seconds and N 1 foot at
3 seconds.
.SAT NIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S
2 ft at 6 seconds and N 1 foot at 4 seconds.
.SUN AND SUN NIGHT...SE winds around 10 kt. Seas around 2 ft.
Wave Detail: S 2 ft at 4 seconds and N 1 foot at 4 seconds.
.MON...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. Wave Detail: SE 2 ft at 4 seconds and SE 1 foot at
9 seconds.
.MON NIGHT AND TUE...S winds 10 to 15 kt with gusts up to 20 kt.
Seas 3 to 5 ft. Rain likely.
.TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
4 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.

$$

ANZ255-242100-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
406 AM EDT Fri May 24 2024

.TODAY...SW winds 5 to 10 kt, increasing to 10 to 15 kt this
afternoon. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 5 seconds and
E 1 foot at 7 seconds. Patchy fog. Vsby 1 NM or less.
.TONIGHT...SW winds 10 to 15 kt, becoming NW after midnight. Seas
around 2 ft. Wave Detail: SW 2 ft at 4 seconds and E 1 foot at
7 seconds. Patchy fog in the evening.
.SAT...NE winds 5 to 10 kt, becoming SE in the afternoon. Seas
around 2 ft. Wave Detail: SW 2 ft at 6 seconds and N 1 foot at
2 seconds.
.SAT NIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S
2 ft at 5 seconds and NE 1 foot at 2 seconds.
.SUN AND SUN NIGHT...SE winds around 10 kt. Seas around 2 ft.
Wave Detail: S 2 ft at 5 seconds and NE 1 foot at 4 seconds.
.MON...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Wave Detail: SE 3 ft at 4 seconds and SE 2 ft at 9 seconds.
.MON NIGHT AND TUE...S winds 15 to 20 kt. Seas 3 to 5 ft. Rain
likely.
.TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
4 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.

$$

ANZ256-242100-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
406 AM EDT Fri May 24 2024

.TODAY...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW
2 ft at 4 seconds and E 1 foot at 7 seconds. Patchy fog. Vsby
1 NM or less.
.TONIGHT...SW winds 10 to 15 kt, becoming NW 5 to 10 kt after
midnight. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and
E 1 foot at 7 seconds. Patchy fog in the evening.
.SAT...NE winds 5 to 10 kt, becoming SE in the afternoon. Seas
around 2 ft. Wave Detail: S 2 ft at 6 seconds and SE 1 foot at
9 seconds.
.SAT NIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S
2 ft at 5 seconds and SE 1 foot at 9 seconds.
.SUN AND SUN NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: S 2 ft at 5 seconds and SE 1 foot at 9 seconds.
.MON...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Wave Detail: SE 3 ft at 4 seconds and SE 2 ft at 9 seconds.
A chance of rain.
.MON NIGHT AND TUE...S winds 15 to 20 kt, becoming SW 10 to
15 kt. Seas 3 to 5 ft. Rain.
.TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
4 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.

$$

ANZ232-242100-
Nantucket Sound-
406 AM EDT Fri May 24 2024

.TODAY...W winds 5 to 10 kt, becoming SW 10 to 15 kt this
afternoon. Seas 1 foot or less, then around 2 ft this afternoon.
Wave Detail: W 1 foot at 2 seconds and S 1 foot at 5 seconds,
becoming SW 2 ft at 4 seconds and E 1 foot at 7 seconds. Patchy
fog. Vsby 1 to 3 NM this morning.
.TONIGHT...SW winds 10 to 15 kt, becoming N 5 to 10 kt after
midnight. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and
N 1 foot at 2 seconds.
.SAT...NE winds around 5 kt, becoming SE in the afternoon. Seas
1 foot or less. Wave Detail: N 1 foot at 3 seconds and S 1 foot
at 5 seconds.
.SAT NIGHT...S winds 5 to 10 kt. Seas 1 foot or less. Wave
Detail: S 1 foot at 3 seconds and NE 1 foot at 3 seconds.
.SUN AND SUN NIGHT...SE winds 5 to 10 kt. Seas 1 foot or less.
Wave Detail: SW 1 foot at 3 seconds and NE 1 foot at 4 seconds.
.MON...SE winds 10 to 15 kt with gusts up to 20 kt. Seas around
2 ft. Wave Detail: SE 2 ft at 3 seconds and SE 1 foot at
9 seconds.
.MON NIGHT AND TUE...S winds around 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. Rain likely.
.TUE 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.

$$

ANZ233-242100-
Vineyard Sound-
406 AM EDT Fri May 24 2024

.TODAY...SW winds 5 to 10 kt, increasing to 10 to 15 kt this
afternoon. Seas around 2 ft. Wave Detail: W 2 ft at 4 seconds and
E 1 foot at 7 seconds. Patchy fog this morning with vsby 1 NM or
less.
.TONIGHT...SW winds 10 to 15 kt, becoming NW 5 to 10 kt after
midnight. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and
E 1 foot at 7 seconds.
.SAT...NE winds around 5 kt, becoming S in the afternoon. Seas
1 foot or less. Wave Detail: N 1 foot at 3 seconds and SW 1 foot
at 5 seconds.
.SAT NIGHT...S winds 5 to 10 kt. Seas 1 foot or less. Wave
Detail: NE 1 foot at 3 seconds and S 1 foot at 5 seconds.
.SUN AND SUN NIGHT...SE winds 5 to 10 kt. Seas 1 foot or less.
Wave Detail: S 1 foot at 4 seconds and SE 1 foot at 9 seconds.
.MON...SE winds 10 to 15 kt with gusts up to 20 kt. Seas around
2 ft. Wave Detail: SE 2 ft at 3 seconds and SW 1 foot at
4 seconds. A chance of rain.
.MON NIGHT AND TUE...S winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. Rain.
.TUE 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.

$$

ANZ234-242100-
Buzzards Bay-
406 AM EDT Fri May 24 2024

.TODAY...SW winds around 5 kt, increasing to 10 to 15 kt this
afternoon. Seas 1 foot or less. Wave Detail: W 1 foot at
4 seconds and E 1 foot at 7 seconds. Patchy fog this morning with
vsby 1 NM or less.
.TONIGHT...SW winds 10 to 15 kt, becoming N 5 to 10 kt after
midnight. Seas 1 foot or less. Wave Detail: SW 1 foot at
4 seconds and E 1 foot at 7 seconds.
.SAT...NE winds around 5 kt, becoming S in the afternoon. Seas
1 foot or less. Wave Detail: N 1 foot at 3 seconds and SW 1 foot
at 5 seconds.
.SAT NIGHT...S winds 5 to 10 kt. Seas 1 foot or less. Wave
Detail: NE 1 foot at 4 seconds and S 1 foot at 5 seconds.
.SUN AND SUN NIGHT...SE winds 5 to 10 kt. Seas 1 foot or less.
Wave Detail: S 1 foot at 4 seconds and NE 1 foot at 4 seconds.
.MON...SE winds 10 to 15 kt with gusts up to 20 kt. Seas around
2 ft. Wave Detail: SE 1 foot at 3 seconds and SW 1 foot at
4 seconds. A chance of rain.
.MON NIGHT AND TUE...S winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. Rain.
.TUE 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.

$$

ANZ235-242100-
Rhode Island Sound-
406 AM EDT Fri May 24 2024

.TODAY...SW winds 5 to 10 kt, increasing to 10 to 15 kt this
afternoon. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds
and SE 1 foot at 7 seconds. Patchy fog. Vsby 1 NM or less,
increasing to 1 to 3 NM this afternoon.
.TONIGHT...SW winds 10 to 15 kt, becoming NW 5 to 10 kt after
midnight. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and
E 1 foot at 7 seconds.
.SAT...NE winds around 5 kt, becoming S in the afternoon. Seas
around 2 ft. Wave Detail: S 2 ft at 6 seconds and NW 1 foot at
3 seconds.
.SAT NIGHT...S winds 5 to 10 kt. Seas 1 foot or less. Wave
Detail: S 1 foot at 6 seconds and SE 1 foot at 9 seconds.
.SUN AND SUN NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: SW 2 ft at 4 seconds and SE 1 foot at 9 seconds.
.MON...SE 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 SE 1 foot at
9 seconds. A chance of rain.
.MON NIGHT AND TUE...S winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 4 ft. Rain.
.TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 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.

$$

ANZ237-242100-
Block Island Sound-
406 AM EDT Fri May 24 2024

.TODAY...SW winds around 5 kt, increasing to 5 to 10 kt this
afternoon. Seas around 2 ft. Wave Detail: S 2 ft at 5 seconds and
SW 1 foot at 2 seconds. Patchy fog. Vsby 1 NM or less.
.TONIGHT...SW winds around 10 kt, becoming NW after midnight.
Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and E 1 foot
at 7 seconds.
.SAT...E winds around 5 kt, becoming S in the afternoon. Seas
1 foot or less, then around 2 ft in the afternoon. Wave Detail:
NW 1 foot at 2 seconds and SE 1 foot at 6 seconds, becoming S
2 ft at 6 seconds and SE 1 foot at 9 seconds.
.SAT NIGHT...S winds 5 to 10 kt. Seas 1 foot or less. Wave
Detail: S 1 foot at 5 seconds and SE 1 foot at 9 seconds.
.SUN AND SUN NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: S 1 foot at 5 seconds and SE 1 foot at 9 seconds.
.MON...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Wave Detail: SE 2 ft at 4 seconds and SE 1 foot at
9 seconds. A chance of rain.
.MON NIGHT AND TUE...SE winds 10 to 15 kt, becoming SW. Gusts up
to 20 kt. Seas 2 to 4 ft. Rain. Vsby 1 to 3 NM.
.TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 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.

$$

ANZ230-242100-
Boston Harbor-
406 AM EDT Fri May 24 2024

.TODAY...W winds 5 to 10 kt, becoming SW 10 to 15 kt with gusts
up to 20 kt this afternoon. Waves 1 foot or less.
.TONIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming
NW 5 to 10 kt after midnight. Waves 1 foot or less.
.SAT...N winds around 5 kt, becoming SE in the afternoon. Waves
1 foot or less.
.SAT NIGHT...S winds 5 to 10 kt. Waves 1 foot or less.
.SUN...SE winds 5 to 10 kt. Waves 1 foot or less. A chance of
showers in the afternoon.
.SUN NIGHT...SE winds 5 to 10 kt. Waves 1 foot or less.
.MON...SE winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to
3 ft. A chance of rain.
.MON NIGHT AND TUE...SE winds 10 to 15 kt with gusts up to 20 kt,
becoming S. Waves 2 to 3 ft. Rain.
.TUE NIGHT...SW winds 10 to 15 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.

$$

ANZ236-242100-
Narragansett Bay-
406 AM EDT Fri May 24 2024

.TODAY...SW winds around 5 kt, increasing to around 10 kt this
afternoon. Waves 1 foot or less.
.TONIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Waves
around 2 ft in the evening, then 1 foot or less.
.SAT...NE winds around 5 kt, becoming S in the afternoon. Waves
1 foot or less.
.SAT NIGHT...S winds 5 to 10 kt. Waves 1 foot or less.
.SUN AND SUN NIGHT...SE winds 5 to 10 kt. Waves around 2 ft.
.MON...SE winds 10 to 15 kt. Waves 2 to 3 ft. A chance of rain.
.MON NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Waves
2 to 4 ft. Rain.
.TUE...SW winds 10 to 15 kt. Waves 2 to 4 ft. Rain likely.
.TUE NIGHT...SW winds 10 to 15 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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