101
FZUS51 KBOX 180700
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
300 AM EDT Sat May 18 2024

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

ANZ200-182000-
300 AM EDT Sat May 18 2024

.Synopsis for Massachusetts and Rhode Island coastal waters...
Shower chances increase overnight tonight and Saturday as low
pressure shifts back north. High pressure builds in late this
weekend with dry conditions persisting through early next week.

$$

ANZ250-182000-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
300 AM EDT Sat May 18 2024

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE SUNDAY NIGHT...

.REST OF TONIGHT...NE winds around 15 kt with gusts up to 20 kt.
Seas 5 to 6 ft. Wave Detail: E 6 ft at 9 seconds. Patchy fog. A
chance of rain. Vsby 1 to 3 NM.
.SAT...NE winds 15 to 20 kt. Seas 5 to 6 ft. Wave Detail: E 6 ft
at 9 seconds. Patchy fog. A chance of rain. Vsby 1 to 3 NM.
.SAT NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas
4 to 6 ft. Wave Detail: E 6 ft at 8 seconds. A chance of rain in
the evening, then a chance of showers after midnight. Patchy fog
in the evening with vsby 1 to 3 NM.
.SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 5 to
6 ft. Wave Detail: E 5 ft at 8 seconds.
.SUN NIGHT AND MON...NE winds 5 to 10 kt. Seas 4 to 5 ft. Wave
Detail: E 5 ft at 8 seconds.
.MON NIGHT...SE winds 5 to 10 kt, becoming S after midnight. Seas
3 to 4 ft. Wave Detail: E 4 ft at 8 seconds.
.TUE THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to
20 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.

$$

ANZ251-182000-
Massachusetts Bay and Ipswich Bay-
300 AM EDT Sat May 18 2024

.REST OF TONIGHT...NE winds 10 to 15 kt with gusts up to 20 kt.
Seas 3 to 5 ft. Wave Detail: E 5 ft at 9 seconds. Patchy fog. A
chance of rain.
.SAT...NE winds around 15 kt with gusts up to 20 kt. Seas 3 to
5 ft. Wave Detail: E 5 ft at 9 seconds. Patchy fog. A chance of
rain. Vsby 1 to 3 NM.
.SAT NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 5 ft. Wave Detail: E 5 ft at 9 seconds. A chance of rain in
the evening, then a chance of showers after midnight. Patchy fog
in the evening with vsby 1 to 3 NM.
.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.
.SUN NIGHT AND MON...E winds 5 to 10 kt. Seas 3 to 5 ft. Wave
Detail: E 4 ft at 8 seconds.
.MON NIGHT...SE winds 5 to 10 kt, becoming S after midnight. Seas
2 to 3 ft. Wave Detail: E 3 ft at 8 seconds.
.TUE THROUGH WED 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.

$$

ANZ231-182000-
Cape Cod Bay-
300 AM EDT Sat May 18 2024

.REST OF TONIGHT...NE winds around 15 kt with gusts up to 20 kt.
Seas 2 to 4 ft. Wave Detail: N 2 ft at 4 seconds. Patchy fog. A
chance of rain. Vsby 1 to 3 NM.
.SAT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. Wave Detail: N 2 ft at 4 seconds. Patchy fog. A chance of
rain. Vsby 1 to 3 NM.
.SAT NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 4 ft. Wave Detail: N 2 ft at 4 seconds. A chance of rain in
the evening, then a chance of showers after midnight. Patchy fog
in the evening with vsby 1 to 3 NM.
.SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. Wave Detail: N 2 ft at 4 seconds.
.SUN NIGHT AND MON...NE winds 5 to 10 kt. Seas 2 to 4 ft. Wave
Detail: N 2 ft at 4 seconds.
.MON NIGHT...E winds around 5 kt, becoming S after midnight. Seas
around 2 ft. Wave Detail: NE 2 ft at 6 seconds.
.TUE THROUGH WED NIGHT...SW 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.

$$

ANZ254-182000-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
300 AM EDT Sat May 18 2024

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE SUNDAY NIGHT...

.REST OF TONIGHT...NE winds around 15 kt with gusts up to 20 kt.
Seas 6 to 8 ft. Wave Detail: E 8 ft at 9 seconds. Patchy fog. A
chance of rain. Vsby 1 NM or less.
.SAT...NE winds around 15 kt with gusts up to 20 kt. Seas 5 to
7 ft. Wave Detail: E 7 ft at 9 seconds. Patchy fog. A chance of
rain. Vsby 1 NM or less, increasing to 1 to 3 NM in the
afternoon.
.SAT NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas
4 to 6 ft. Wave Detail: E 6 ft at 8 seconds. A chance of rain in
the evening, then a chance of showers after midnight. Patchy fog
in the evening. Vsby 1 to 3 NM.
.SUN...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.
.SUN NIGHT AND MON...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.
.MON NIGHT...E winds 5 to 10 kt, becoming SE after midnight. Seas
3 to 5 ft. Wave Detail: E 4 ft at 8 seconds.
.TUE THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to
20 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.

$$

ANZ255-182000-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
300 AM EDT Sat May 18 2024

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING...

.REST OF TONIGHT...NE winds around 15 kt with gusts up to 20 kt.
Seas 5 to 7 ft. Wave Detail: E 6 ft at 9 seconds. Patchy fog. A
chance of rain. Vsby 1 NM or less.
.SAT...NE winds around 15 kt with gusts up to 20 kt. Seas 4 to
6 ft. Wave Detail: NE 6 ft at 9 seconds. Patchy fog. Vsby 1 NM or
less, increasing to 1 to 3 NM in the afternoon.
.SAT NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 5 ft. Wave Detail: NE 5 ft at 8 seconds and N 1 foot at
4 seconds. A chance of showers. Patchy fog in the evening with
vsby 1 to 3 NM.
.SUN...NE winds 15 to 20 kt. Seas 3 to 5 ft. Wave Detail: NE 5 ft
at 7 seconds and N 1 foot at 4 seconds.
.SUN NIGHT AND MON...NE winds 15 to 20 kt. Seas 3 to 5 ft. Wave
Detail: NE 5 ft at 7 seconds.
.MON NIGHT...NE winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: NE
4 ft at 8 seconds.
.TUE THROUGH WED 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.

$$

ANZ256-182000-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
300 AM EDT Sat May 18 2024

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING...

.REST OF TONIGHT...N winds around 15 kt with gusts up to 20 kt.
Seas 4 to 6 ft. Wave Detail: E 6 ft at 9 seconds. Patchy fog. A
chance of rain. Vsby 1 NM or less.
.SAT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to
6 ft. Wave Detail: E 6 ft at 9 seconds. Patchy fog. Vsby 1 NM or
less, increasing to 1 to 3 NM in the afternoon.
.SAT NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 4 ft. Wave Detail: E 4 ft at 9 seconds. Patchy fog in the
evening.
.SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
4 ft. Wave Detail: NE 4 ft at 8 seconds and N 1 foot at
4 seconds.
.SUN NIGHT AND MON...NE winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 4 ft. Wave Detail: NE 4 ft at 8 seconds.
.MON NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
3 ft at 8 seconds.
.TUE THROUGH WED NIGHT...SW winds 10 to 15 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.

$$

ANZ232-182000-
Nantucket Sound-
300 AM EDT Sat May 18 2024

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

$$

ANZ233-182000-
Vineyard Sound-
300 AM EDT Sat May 18 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 4 seconds. Patchy fog. A
chance of rain. Vsby 1 to 3 NM.
.SAT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Wave Detail: NE 2 ft at 4 seconds. Patchy fog. A chance of
rain in the morning. Vsby 1 to 3 NM.
.SAT NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas
around 2 ft. Wave Detail: N 2 ft at 4 seconds. A chance of
showers. Patchy fog in the evening with vsby 1 to 3 NM.
.SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas around
2 ft. Wave Detail: N 2 ft at 5 seconds.
.SUN NIGHT AND MON...NE winds 10 to 15 kt with gusts up to 20 kt.
Seas around 2 ft. Wave Detail: NE 2 ft at 4 seconds.
.MON NIGHT...E winds 5 to 10 kt, becoming S after midnight. Seas
1 foot or less. Wave Detail: E 1 foot at 6 seconds.
.TUE THROUGH WED NIGHT...SW 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.

$$

ANZ234-182000-
Buzzards Bay-
300 AM EDT Sat May 18 2024

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

$$

ANZ235-182000-
Rhode Island Sound-
300 AM EDT Sat May 18 2024

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

$$

ANZ237-182000-
Block Island Sound-
300 AM EDT Sat May 18 2024

.REST OF TONIGHT...N winds 10 to 15 kt with gusts up to 20 kt.
Seas 3 to 4 ft. Wave Detail: E 4 ft at 8 seconds. Patchy fog. A
slight chance of rain.
.SAT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. Wave Detail: E 4 ft at 9 seconds. Patchy fog. Vsby 1 to
3 NM in the morning.
.SAT NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft. Wave Detail: E 3 ft at 9 seconds. Patchy fog in the
evening.
.SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Wave Detail: NE 3 ft at 8 seconds.
.SUN NIGHT...NE winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail:
NE 3 ft at 6 seconds.
.MON AND MON NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave
Detail: NE 2 ft at 6 seconds.
.TUE THROUGH WED NIGHT...SW winds 10 to 15 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.

$$

ANZ230-182000-
Boston Harbor-
300 AM EDT Sat May 18 2024

.REST OF TONIGHT...NE winds 10 to 15 kt. Waves around 2 ft. A
chance of rain.
.SAT...NE winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to
3 ft. Patchy fog. A chance of rain.
.SAT NIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Waves 2 to 3 ft. A chance of rain in the evening, then a
chance of showers after midnight. Patchy fog in the evening.
.SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to
3 ft. A chance of showers in the morning.
.SUN NIGHT...NE winds 5 to 10 kt. Waves around 2 ft in the
evening, then 1 foot or less.
.MON AND MON NIGHT...SW winds 5 to 10 kt. Waves 1 foot or less.
.TUE THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to
20 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.

$$

ANZ236-182000-
Narragansett Bay-
300 AM EDT Sat May 18 2024

.REST OF TONIGHT...N winds 10 to 15 kt with gusts up to 20 kt.
Waves around 2 ft. Patchy fog. A chance of rain.
.SAT...NE winds 10 to 15 kt with gusts up to 20 kt. Waves around
2 ft. Patchy fog. Vsby 1 to 3 NM in the morning.
.SAT NIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Waves
around 2 ft. Patchy fog in the evening.
.SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to
3 ft.
.SUN NIGHT AND MON...NE winds 10 to 15 kt. Waves 2 to 3 ft.
.MON NIGHT...SE winds 5 to 10 kt, becoming SW after midnight.
Waves around 2 ft.
.TUE THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to
20 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.

$$

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