Coastal Waters Forecast
Issued by NWS Boston, MA

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467
FZUS51 KBOX 190504
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
104 AM EDT Sun May 19 2024

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

ANZ200-191800-
104 AM EDT Sun May 19 2024

.Synopsis for Massachusetts and Rhode Island coastal waters...
Light scattered showers with low ceilings and areas of fog continue
this afternoon and evening as low pressure continues to spin well off
shore to the east. Shower chances decrease for Sunday. High pressure
builds in late Sunday with dry conditions persisting through early
next week.

$$

ANZ250-191800-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
104 AM EDT Sun May 19 2024

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.REST OF TONIGHT...NE winds 10 to 15 kt with gusts up to 20 kt.
Seas 4 to 6 ft. Wave Detail: E 5 ft at 8 seconds and S 1 foot at
7 seconds. Areas of fog. A chance of rain. Vsby 1 NM or less.
.SUN...NE winds around 15 kt with gusts up to 20 kt. Seas 5 to
6 ft. Wave Detail: E 5 ft at 8 seconds and S 1 foot at 7 seconds.
Patchy fog. A chance of rain in the morning with vsby 1 NM or
less.
.SUN NIGHT...NE winds 10 to 15 kt, diminishing to 5 to 10 kt
after midnight. Seas 4 to 6 ft. Wave Detail: E 5 ft at 8 seconds.
Patchy fog. Vsby 1 to 3 NM.
.MON...NE winds 5 to 10 kt, becoming E in the afternoon. Seas
4 to 5 ft. Wave Detail: E 5 ft at 8 seconds and SE 1 foot at
11 seconds. Patchy fog in the morning.
.MON NIGHT THROUGH TUE NIGHT...SW winds 10 to 15 kt with gusts up
to 20 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft at 9 seconds and S
2 ft at 3 seconds.
.WED THROUGH THU...S winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 4 ft. Wave Detail: S 3 ft at 4 seconds and E 3 ft at
8 seconds.
.THU NIGHT...SW 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.

$$

ANZ251-191800-
Massachusetts Bay and Ipswich Bay-
104 AM EDT Sun May 19 2024

.REST OF TONIGHT...NE winds 10 to 15 kt with gusts up to 20 kt.
Seas 3 to 4 ft. Wave Detail: E 4 ft at 8 seconds and NE 1 foot at
3 seconds. Areas of fog. A chance of rain. Vsby 1 NM or less.
.SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
5 ft. Wave Detail: E 5 ft at 8 seconds and NE 1 foot at
3 seconds. Patchy fog. A chance of rain in the morning with vsby
1 NM or less.
.SUN NIGHT...NE winds 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: E
5 ft at 8 seconds and NE 1 foot at 3 seconds. Patchy fog. Vsby
1 to 3 NM after midnight.
.MON...E winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: E 4 ft at
8 seconds. Patchy fog in the morning.
.MON NIGHT THROUGH TUE NIGHT...SW winds 10 to 15 kt with gusts up
to 20 kt. Seas 2 to 4 ft. Wave Detail: E 4 ft at 8 seconds and S
2 ft at 4 seconds.
.WED THROUGH THU...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 2 ft at
8 seconds.
.THU NIGHT...SW 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.

$$

ANZ231-191800-
Cape Cod Bay-
104 AM EDT Sun May 19 2024

.REST OF TONIGHT...NE winds 10 to 15 kt. Seas 2 to 3 ft. Wave
Detail: E 3 ft at 8 seconds and N 2 ft at 3 seconds. Areas of
dense fog. A chance of rain. Vsby 1 NM or less.
.SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. Wave Detail: E 3 ft at 7 seconds and N 2 ft at 4 seconds.
Patchy fog. A chance of rain in the morning. Vsby 1 NM or less,
increasing to 1 to 3 NM in the afternoon.
.SUN NIGHT...NE winds 10 to 15 kt. Seas 2 to 4 ft. Wave Detail: E
3 ft at 8 seconds and N 2 ft at 4 seconds. Patchy fog. Vsby 1 to
3 NM.
.MON...NE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft
at 8 seconds and N 1 foot at 4 seconds. Patchy fog in the
morning.
.MON NIGHT THROUGH TUE NIGHT...SW winds 5 to 10 kt. Seas around
2 ft. Wave Detail: E 2 ft at 8 seconds and SE 1 foot at
10 seconds.
.WED THROUGH THU...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 2 ft at
8 seconds.
.THU NIGHT...SW 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.

$$

ANZ254-191800-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
104 AM EDT Sun May 19 2024

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.REST OF TONIGHT...NE winds 10 to 15 kt with gusts up to 20 kt.
Seas 4 to 5 ft. Wave Detail: E 5 ft at 8 seconds and NE 1 foot at
3 seconds. Areas of dense fog. A chance of rain. Vsby 1 NM or
less.
.SUN...NE winds around 15 kt with gusts up to 20 kt. Seas 4 to
6 ft. Wave Detail: SE 5 ft at 7 seconds and NE 1 foot at
3 seconds. Patchy fog. Vsby 1 NM or less, increasing to 1 to 3 NM
in the afternoon.
.SUN NIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 4 to 6 ft. Wave Detail: E 5 ft at 8 seconds and NE
1 foot at 3 seconds. Patchy fog. Vsby 1 to 3 NM in the evening.
.MON...NE winds 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: E 5 ft
at 8 seconds and SE 1 foot at 11 seconds. Patchy fog in the
morning.
.MON NIGHT THROUGH TUE NIGHT...SW winds 5 to 10 kt. Seas 3 to
5 ft. Wave Detail: E 4 ft at 8 seconds and SW 2 ft at 3 seconds.
.WED THROUGH THU NIGHT...SW winds 10 to 15 kt with gusts up to
20 kt. Seas 2 to 4 ft. Wave Detail: S 3 ft at 4 seconds and E
3 ft at 8 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.

$$

ANZ255-191800-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
104 AM EDT Sun May 19 2024

.REST OF TONIGHT...NE winds 10 to 15 kt with gusts up to 20 kt.
Seas 3 to 4 ft. Wave Detail: E 4 ft at 8 seconds and NE 2 ft at
3 seconds. Areas of dense fog. A chance of rain. Vsby 1 NM or
less.
.SUN...NE winds 15 to 20 kt. Seas 3 to 5 ft. Wave Detail: E 4 ft
at 7 seconds and NE 2 ft at 4 seconds. Patchy fog. Vsby 1 NM or
less, increasing to 1 to 3 NM in the afternoon.
.SUN NIGHT...NE winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. Seas 3 to 5 ft. Wave Detail: E 4 ft at 8 seconds
and NE 2 ft at 4 seconds. Patchy fog.
.MON...NE winds 10 to 15 kt. Seas 3 to 5 ft. Wave Detail: E 4 ft
at 8 seconds and NE 1 foot at 3 seconds. Patchy fog in the
morning.
.MON NIGHT THROUGH TUE NIGHT...SW winds 5 to 10 kt. Seas 2 to
4 ft. Wave Detail: E 4 ft at 8 seconds and SW 2 ft at 3 seconds.
.WED THROUGH THU NIGHT...SW winds 10 to 15 kt with gusts up to
20 kt. Seas 2 to 4 ft. Wave Detail: SW 4 ft at 5 seconds and E
2 ft at 8 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.

$$

ANZ256-191800-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
104 AM EDT Sun May 19 2024

.REST OF TONIGHT...NE winds 10 to 15 kt with gusts up to 20 kt.
Seas 3 to 4 ft. Wave Detail: E 4 ft at 8 seconds and N 2 ft at
4 seconds. Areas of fog. A slight chance of rain. Vsby 1 NM or
less.
.SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
4 ft. Wave Detail: E 4 ft at 8 seconds and N 2 ft at 4 seconds.
Patchy fog. Vsby 1 NM or less, increasing to 1 to 3 NM in the
afternoon.
.SUN NIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 3 to 4 ft. Wave Detail: E 4 ft at 8 seconds and NE
2 ft at 4 seconds. Patchy fog.
.MON...NE winds around 10 kt. Seas 2 to 4 ft. Wave Detail: E 3 ft
at 8 seconds and N 1 foot at 3 seconds. Patchy fog in the
morning.
.MON NIGHT THROUGH TUE NIGHT...SW winds 5 to 10 kt. Seas 2 to
3 ft. Wave Detail: E 3 ft at 8 seconds and SW 2 ft at 3 seconds.
.WED THROUGH THU...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 E 2 ft at
8 seconds.
.THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
3 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.

$$

ANZ232-191800-
Nantucket Sound-
104 AM EDT Sun May 19 2024

.REST OF TONIGHT...NE winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. Wave Detail: NE 2 ft at 3 seconds and E 2 ft at
8 seconds. Areas of dense fog. A chance of rain. Vsby 1 NM or
less.
.SUN...NE winds around 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. Wave Detail: NE 2 ft at 3 seconds and E 2 ft at 8 seconds.
Patchy fog. Vsby 1 NM or less, increasing to 1 to 3 NM in the
afternoon.
.SUN NIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 2 to 4 ft. Wave Detail: E 3 ft at 8 seconds and NE
2 ft at 4 seconds. Patchy fog. Vsby 1 to 3 NM.
.MON...NE winds around 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft
at 8 seconds and NE 1 foot at 3 seconds. Patchy fog in the
morning.
.MON NIGHT THROUGH TUE NIGHT...SW winds 5 to 10 kt. Seas around
2 ft. Wave Detail: SW 2 ft at 3 seconds and E 2 ft at 8 seconds.
.WED THROUGH THU 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 8 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.

$$

ANZ233-191800-
Vineyard Sound-
104 AM EDT Sun May 19 2024

.REST OF TONIGHT...NE winds 10 to 15 kt with gusts up to 20 kt.
Seas around 2 ft. Wave Detail: E 2 ft at 8 seconds and NE 1 foot
at 3 seconds. Areas of fog. A chance of rain. Vsby 1 NM or less.
.SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas around
2 ft. Wave Detail: N 1 foot at 4 seconds and E 1 foot at
7 seconds. Patchy fog. Vsby 1 NM or less, increasing to 1 to 3 NM
in the afternoon.
.SUN NIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas around 2 ft. Wave Detail: NE 1 foot at 3 seconds
and E 1 foot at 7 seconds. Patchy fog. Vsby 1 to 3 NM in the
evening.
.MON...NE winds around 10 kt. Seas around 2 ft. Wave Detail: NE
1 foot at 3 seconds and NW 1 foot at 5 seconds. Patchy fog in the
morning.
.MON NIGHT THROUGH TUE NIGHT...SW winds 5 to 10 kt. Seas around
2 ft. Wave Detail: E 1 foot at 8 seconds and SE 1 foot at
11 seconds.
.WED THROUGH THU...SW 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 foot
at 8 seconds.
.THU NIGHT...SW 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.

$$

ANZ234-191800-
Buzzards Bay-
104 AM EDT Sun May 19 2024

.REST OF TONIGHT...NE winds 10 to 15 kt. Seas around 2 ft. Wave
Detail: E 2 ft at 8 seconds and NE 1 foot at 3 seconds. Areas of
fog. A chance of rain. Vsby 1 NM or less.
.SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas around
2 ft. Wave Detail: N 2 ft at 4 seconds and E 2 ft at 8 seconds.
Patchy fog. Vsby 1 NM or less, increasing to 1 to 3 NM in the
afternoon.
.SUN NIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas around 2 ft. Wave Detail: NE 2 ft at 3 seconds and
E 2 ft at 7 seconds. Patchy fog. Vsby 1 to 3 NM.
.MON...NE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft
at 8 seconds and NE 1 foot at 2 seconds. Patchy fog in the
morning.
.MON NIGHT THROUGH TUE NIGHT...SW winds 5 to 10 kt. Seas around
2 ft. Wave Detail: E 2 ft at 8 seconds and SE 1 foot at
11 seconds.
.WED THROUGH THU...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 8 seconds.
.THU NIGHT...SW 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.

$$

ANZ235-191800-
Rhode Island Sound-
104 AM EDT Sun May 19 2024

.REST OF TONIGHT...NE winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds and NE 2 ft at
3 seconds. Areas of fog. A slight chance of rain. Vsby 1 NM or
less.
.SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Wave Detail: NE 2 ft at 3 seconds and SE 2 ft at 8 seconds.
Patchy fog. Vsby 1 NM or less, increasing to 1 to 3 NM in the
afternoon.
.SUN NIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 4 seconds and SE
2 ft at 7 seconds. Patchy fog. Vsby 1 to 3 NM after midnight.
.MON...NE winds around 10 kt, becoming E in the afternoon. Seas
around 2 ft. Wave Detail: NE 2 ft at 3 seconds and SE 2 ft at
8 seconds. Patchy fog in the morning.
.MON NIGHT THROUGH TUE NIGHT...SW winds 5 to 10 kt. Seas around
2 ft. Wave Detail: SW 2 ft at 3 seconds and E 2 ft at 8 seconds.
.WED THROUGH THU...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 9 seconds.
.THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 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.

$$

ANZ237-191800-
Block Island Sound-
104 AM EDT Sun May 19 2024

.REST OF TONIGHT...NE winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. Wave Detail: E 3 ft at 8 seconds and NE 2 ft at
3 seconds. Areas of fog. A slight chance of rain. Vsby 1 NM or
less.
.SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Wave Detail: E 3 ft at 8 seconds and NE 2 ft at 3 seconds.
Patchy fog. Vsby 1 NM or less in the morning.
.SUN NIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds and NE
2 ft at 4 seconds. Patchy fog. Vsby 1 to 3 NM after midnight.
.MON...NE winds 5 to 10 kt, becoming E in the afternoon. Seas
around 2 ft. Wave Detail: E 2 ft at 8 seconds and NE 1 foot at
3 seconds. Patchy fog in the morning.
.MON NIGHT THROUGH TUE NIGHT...SW winds 5 to 10 kt. Seas around
2 ft. Wave Detail: E 2 ft at 8 seconds and SW 1 foot at
3 seconds.
.WED THROUGH THU...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 SE 2 ft at
9 seconds.
.THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 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.

$$

ANZ230-191800-
Boston Harbor-
104 AM EDT Sun May 19 2024

.REST OF TONIGHT...NE winds 10 to 15 kt. Waves 2 to 3 ft. Areas
of fog. A chance of rain. Vsby 1 NM or less.
.SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to
3 ft. Patchy fog. A chance of rain in the morning with vsby 1 NM
or less.
.SUN NIGHT...NE winds 5 to 10 kt. Waves around 2 ft in the
evening, then 1 foot or less. Patchy fog.
.MON...E winds 5 to 10 kt. Waves 1 foot or less. Patchy fog in
the morning.
.MON NIGHT THROUGH TUE NIGHT...SW winds 10 to 15 kt. Waves around
2 ft.
.WED THROUGH THU...SW winds 10 to 15 kt with gusts up to 20 kt.
Waves around 2 ft.
.THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Waves
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.

$$

ANZ236-191800-
Narragansett Bay-
104 AM EDT Sun May 19 2024

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

$$

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