Coastal Waters Forecast
Issued by NWS Boston, MA

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FZUS51 KBOX 191702
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
101 PM EDT Fri Apr 19 2024

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

ANZ200-200600-
101 PM EDT Fri Apr 19 2024

.Synopsis for Massachusetts and Rhode Island coastal waters...
High pres builds over the waters today, but shifts toward Nova
Scotia by late in the day. A cold front crosses the waters on Sat
bringing rain showers and gusty winds. High pres nudges in as we
head into next week. Will have gusty winds as we head into early
next week.

$$

ANZ250-200600-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
101 PM EDT Fri Apr 19 2024

.THIS AFTERNOON...SE winds 10 to 15 kt. Seas 2 to 3 ft. Wave
Detail: SE 2 ft at 5 seconds and E 2 ft at 11 seconds.
.TONIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. Wave Detail: SE 3 ft at 4 seconds and E 2 ft at 11 seconds.
A chance of showers after midnight.
.SAT...SW winds 10 to 15 kt with gusts up to 20 kt, diminishing
to 5 to 10 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: S
3 ft at 4 seconds and E 1 ft at 4 seconds. Patchy fog. Showers in
the morning. A chance of showers in the afternoon. Vsby 1 to
3 NM.
.SAT NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas
2 to 3 ft. Wave Detail: W 3 ft at 4 seconds and SE 2 ft at
5 seconds. A chance of showers in the evening with vsby 1 to
3 NM.
.SUN AND SUN NIGHT...W winds 10 to 15 kt with gusts up to 25 kt.
Seas 2 to 3 ft. Wave Detail: W 3 ft at 4 seconds and SE 2 ft at
6 seconds.
.MON AND MON NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt,
becoming SE. Seas 2 to 3 ft.
.TUE AND TUE NIGHT...S winds 15 to 20 kt with gusts up to 25 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.

$$

ANZ251-200600-
Massachusetts Bay and Ipswich Bay-
101 PM EDT Fri Apr 19 2024

.THIS AFTERNOON...SE winds 15 to 20 kt. Seas 2 to 3 ft. Wave
Detail: SE 3 ft at 5 seconds and E 1 ft at 11 seconds.
.TONIGHT...S 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 2 ft at 4 seconds.
A chance of showers after midnight.
.SAT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft
at 4 seconds and E 1 ft at 5 seconds. Showers, mainly in the
morning. Patchy fog in the morning. Vsby 1 to 3 NM.
.SAT NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas
around 2 ft. Wave Detail: W 2 ft at 3 seconds and SE 1 ft at
5 seconds. A chance of showers in the evening.
.SUN AND SUN NIGHT...W winds 10 to 15 kt with gusts up to 20 kt.
Seas around 2 ft. Wave Detail: W 2 ft at 3 seconds and SE 1 ft at
6 seconds.
.MON AND MON NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt,
becoming SE. Seas around 2 ft.
.TUE AND TUE NIGHT...S winds 10 to 15 kt with gusts up to 25 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.

$$

ANZ231-200600-
Cape Cod Bay-
101 PM EDT Fri Apr 19 2024

.THIS AFTERNOON...E winds 10 to 15 kt. Seas around 2 ft. Wave
Detail: SE 2 ft at 6 seconds and SE 1 ft at 3 seconds.
.TONIGHT...S winds around 10 kt. Gusts up to 20 kt in the
evening. Seas around 2 ft. Wave Detail: SE 1 ft at 3 seconds and
S 1 ft at 4 seconds. A chance of showers after midnight.
.SAT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft
at 4 seconds and E 1 ft at 4 seconds. Patchy fog. Showers. Vsby
1 to 3 NM.
.SAT NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas
around 2 ft. Wave Detail: W 2 ft at 3 seconds and SE 1 ft at
6 seconds.
.SUN AND SUN NIGHT...W winds 10 to 15 kt with gusts up to 20 kt.
Seas around 2 ft. Wave Detail: NW 2 ft at 4 seconds and SE 1 ft
at 6 seconds.
.MON THROUGH TUE NIGHT...S winds 10 to 15 kt with gusts up to
25 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.

$$

ANZ254-200600-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
101 PM EDT Fri Apr 19 2024

.THIS AFTERNOON...E winds 10 to 15 kt with gusts up to 20 kt.
Seas around 3 ft. Wave Detail: E 2 ft at 5 seconds and E 2 ft at
11 seconds.
.TONIGHT...SE winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas around 3 ft. Wave Detail: SE 3 ft at 5 seconds and
E 2 ft at 11 seconds.
.SAT...S winds around 10 kt, becoming SW in the afternoon. Seas
2 to 3 ft. Wave Detail: S 3 ft at 4 seconds and E 2 ft at
11 seconds. Patchy fog. Showers. Vsby 1 to 3 NM.
.SAT NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas
2 to 4 ft. Wave Detail: NW 3 ft at 4 seconds and SE 3 ft at
6 seconds.
.SUN AND SUN NIGHT...W winds 15 to 20 kt with gusts up to 25 kt.
Seas 2 to 4 ft. Wave Detail: NW 3 ft at 4 seconds and SE 2 ft at
6 seconds.
.MON THROUGH TUE NIGHT...S winds 10 to 15 kt with gusts up to
25 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.

$$

ANZ255-200600-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
101 PM EDT Fri Apr 19 2024

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

$$

ANZ256-200600-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
101 PM EDT Fri Apr 19 2024

.THIS AFTERNOON...E winds 10 to 15 kt with gusts up to 20 kt.
Seas 3 to 4 ft. Wave Detail: SE 4 ft at 7 seconds and E 1 ft at
11 seconds.
.TONIGHT...SE winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: SE
4 ft at 7 seconds and E 1 ft at 11 seconds. Patchy fog after
midnight. A chance of showers after midnight with vsby 1 to 3 NM.
.SAT...SW winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: SE 3 ft
at 7 seconds and W 2 ft at 4 seconds. Patchy fog. Showers. Vsby
1 to 3 NM.
.SAT NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas
2 to 3 ft. Wave Detail: W 3 ft at 4 seconds and SE 3 ft at
7 seconds.
.SUN AND SUN NIGHT...W winds 15 to 20 kt with gusts up to 25 kt.
Seas 2 to 4 ft. Wave Detail: NW 3 ft at 4 seconds and SE 2 ft at
7 seconds.
.MON THROUGH TUE NIGHT...S winds 10 to 15 kt with gusts up to
25 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.

$$

ANZ232-200600-
Nantucket Sound-
101 PM EDT Fri Apr 19 2024

.THIS AFTERNOON...E winds 10 to 15 kt with gusts up to 20 kt.
Seas around 2 ft. Wave Detail: E 2 ft at 3 seconds and SE 2 ft at
6 seconds.
.TONIGHT...S winds 10 to 15 kt. Gusts up to 20 kt in the evening.
Seas around 2 ft. Wave Detail: E 2 ft at 4 seconds and S 2 ft at
4 seconds.
.SAT...S winds around 10 kt, becoming SW in the afternoon. Seas
around 2 ft. Wave Detail: SW 2 ft at 4 seconds and E 1 ft at
5 seconds. Patchy fog. Showers. Vsby 1 NM or less, increasing to
1 to 3 NM in the afternoon.
.SAT NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas
around 2 ft. Wave Detail: W 2 ft at 4 seconds and SE 1 ft at
6 seconds.
.SUN AND SUN NIGHT...W winds 15 to 20 kt with gusts up to 25 kt.
Seas 2 to 3 ft. Wave Detail: W 2 ft at 3 seconds and SE 1 ft at
6 seconds.
.MON THROUGH TUE NIGHT...S winds 10 to 15 kt with gusts up to
20 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.

$$

ANZ233-200600-
Vineyard Sound-
101 PM EDT Fri Apr 19 2024

.THIS AFTERNOON...E winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: SE 2 ft at 7 seconds and SE 1 ft at 3 seconds.
.TONIGHT...S winds around 10 kt. Seas around 2 ft. Wave Detail: S
2 ft at 6 seconds and S 1 ft at 3 seconds. A chance of showers
after midnight.
.SAT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW
2 ft at 4 seconds and SE 2 ft at 6 seconds. Patchy fog. Showers.
Vsby 1 NM or less in the morning.
.SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
around 2 ft. Wave Detail: W 2 ft at 4 seconds and S 2 ft at
7 seconds.
.SUN AND SUN NIGHT...W winds 15 to 20 kt with gusts up to 25 kt.
Seas 2 to 4 ft. Wave Detail: W 2 ft at 4 seconds and S 1 ft at
7 seconds.
.MON THROUGH TUE NIGHT...S winds 10 to 15 kt with gusts up to
20 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.

$$

ANZ234-200600-
Buzzards Bay-
101 PM EDT Fri Apr 19 2024

.THIS AFTERNOON...E winds 10 to 15 kt. Seas 2 to 3 ft. Wave
Detail: SE 2 ft at 6 seconds and SE 1 ft at 3 seconds.
.TONIGHT...S winds around 10 kt. Seas around 2 ft. Wave Detail: S
2 ft at 4 seconds and SE 1 ft at 3 seconds. A chance of showers
after midnight.
.SAT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW
2 ft at 3 seconds and SE 2 ft at 6 seconds. Showers. Patchy fog
in the morning. Vsby 1 to 3 NM.
.SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
around 2 ft. Wave Detail: SW 2 ft at 5 seconds and E 1 ft at
5 seconds.
.SUN AND SUN NIGHT...W winds 15 to 20 kt with gusts up to 25 kt.
Seas 2 to 4 ft. Wave Detail: W 2 ft at 4 seconds and SE 1 ft at
6 seconds.
.MON THROUGH TUE NIGHT...S winds 10 to 15 kt with gusts up to
20 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.

$$

ANZ235-200600-
Rhode Island Sound-
101 PM EDT Fri Apr 19 2024

.THIS AFTERNOON...SE winds 10 to 15 kt. Seas 2 to 3 ft. Wave
Detail: SE 3 ft at 7 seconds and E 1 ft at 3 seconds.
.TONIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE
3 ft at 7 seconds and E 1 ft at 3 seconds. Patchy fog after
midnight. A chance of showers after midnight.
.SAT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft
at 7 seconds and SW 2 ft at 4 seconds. Showers. Patchy fog in the
morning. Vsby 1 to 3 NM.
.SAT NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas
2 to 3 ft. Wave Detail: W 3 ft at 4 seconds and SE 2 ft at
7 seconds.
.SUN AND SUN NIGHT...W winds 15 to 20 kt with gusts up to 25 kt.
Seas 2 to 3 ft. Wave Detail: W 2 ft at 4 seconds and SE 2 ft at
7 seconds.
.MON THROUGH TUE NIGHT...S winds 10 to 15 kt with gusts up to
25 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.

$$

ANZ237-200600-
Block Island Sound-
101 PM EDT Fri Apr 19 2024

.THIS AFTERNOON...E winds 10 to 15 kt. Seas 2 to 3 ft. Wave
Detail: SE 3 ft at 7 seconds and E 1 ft at 4 seconds.
.TONIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE
3 ft at 7 seconds and E 1 ft at 4 seconds. Patchy fog after
midnight. A chance of showers after midnight with vsby 1 to 3 NM.
.SAT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft
at 7 seconds and W 2 ft at 3 seconds. Showers. Patchy fog in the
morning with vsby 1 to 3 NM.
.SAT NIGHT...W winds 10 to 15 kt with gusts up to 30 kt. Seas
around 2 ft. Wave Detail: W 2 ft at 4 seconds and SE 2 ft at
7 seconds.
.SUN AND SUN NIGHT...W winds 10 to 15 kt with gusts up to 25 kt.
Seas 2 to 3 ft. Wave Detail: W 2 ft at 3 seconds and SE 2 ft at
7 seconds.
.MON THROUGH TUE NIGHT...S winds 10 to 15 kt with gusts up to
25 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.

$$

ANZ230-200600-
Boston Harbor-
101 PM EDT Fri Apr 19 2024

.THIS AFTERNOON...SE winds 15 to 20 kt. Waves around 2 ft.
.TONIGHT...S winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. Waves around 2 ft. A
chance of showers after midnight.
.SAT...SW winds 5 to 10 kt. Waves 1 foot or less, then around
2 ft in the afternoon. Showers. Patchy fog in the morning with
vsby 1 to 3 NM.
.SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Waves
around 2 ft. A chance of showers in the evening.
.SUN AND SUN NIGHT...W winds 10 to 15 kt with gusts up to 20 kt.
Waves around 2 ft.
.MON THROUGH TUE NIGHT...S winds 10 to 15 kt with gusts up to
25 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.

$$

ANZ236-200600-
Narragansett Bay-
101 PM EDT Fri Apr 19 2024

.THIS AFTERNOON...SE winds 5 to 10 kt. Waves around 2 ft.
.TONIGHT...S winds 5 to 10 kt. Waves around 2 ft. Patchy fog
after midnight. A chance of showers after midnight.
.SAT...SW winds 5 to 10 kt. Waves around 2 ft. Showers. Patchy
fog in the morning with vsby 1 to 3 NM.
.SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Waves
around 2 ft.
.SUN AND SUN NIGHT...W winds 10 to 15 kt with gusts up to 20 kt.
Waves 2 to 3 ft.
.MON THROUGH TUE NIGHT...S winds 10 to 15 kt with gusts up to
20 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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