563
FZUS51 KBOX 200645
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
245 AM EDT Mon May 20 2024

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

ANZ200-201900-
245 AM EDT Mon May 20 2024

.Synopsis for Massachusetts and Rhode Island coastal waters...
A slow moving area of low pressure continues to bring cloudy and
showery weather with northeast breezes tonight. High pressure over
coastal Maine settles over the waters Monday and continues thru
Wednesday. A cold front brings the risk for showers and
thunderstorms on Thursday.

$$

ANZ250-201900-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
245 AM EDT Mon May 20 2024

.REST OF TONIGHT...NE winds 5 to 10 kt. Seas 4 to 5 ft. Wave
Detail: E 5 ft at 8 seconds. Patchy very light drizzle.
.MON...NE winds 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: E 4 ft
at 8 seconds.
.MON NIGHT...S winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E
4 ft at 8 seconds.
.TUE...S winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas 3 to 4 ft. Wave Detail: E 4 ft at 9 seconds and S 2 ft at
3 seconds.
.TUE NIGHT THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up
to 20 kt. Seas 2 to 4 ft. Wave Detail: E 4 ft at 9 seconds and SW
3 ft at 4 seconds.
.THU...SW winds around 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. Wave Detail: SW 3 ft at 4 seconds and E 2 ft at 7 seconds.
.THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 4 ft. A chance of showers.
.FRI AND FRI NIGHT...SW winds around 10 kt, becoming W. 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.

$$

ANZ251-201900-
Massachusetts Bay and Ipswich Bay-
245 AM EDT Mon May 20 2024

.REST OF TONIGHT...NE winds 5 to 10 kt. Seas 2 to 3 ft. Wave
Detail: E 3 ft at 8 seconds and NE 1 foot at 3 seconds. Patchy
very light drizzle.
.MON...NE winds 5 to 10 kt, becoming E in the afternoon. Seas
2 to 3 ft. Wave Detail: E 3 ft at 8 seconds and NE 1 foot at
2 seconds.
.MON NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
3 ft at 8 seconds. Patchy fog after midnight with vsby 1 NM or
less.
.TUE...S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: E 3 ft
at 9 seconds and S 2 ft at 4 seconds.
.TUE NIGHT THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up
to 20 kt. Seas 2 to 4 ft. Wave Detail: E 4 ft at 9 seconds and S
2 ft at 4 seconds.
.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 2 ft at 7 seconds.
.THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
around 2 ft. A chance of showers and tstms.
.FRI AND FRI NIGHT...W winds 5 to 10 kt. Seas 1 foot or less.

Winds and seas higher in and near tstms.

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.

$$

ANZ231-201900-
Cape Cod Bay-
245 AM EDT Mon May 20 2024

.REST OF TONIGHT...NE winds around 10 kt. Seas 2 to 3 ft. Wave
Detail: E 3 ft at 7 seconds and N 2 ft at 4 seconds. Patchy very
light drizzle.
.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 very light drizzle
in the morning.
.MON NIGHT...SE winds around 5 kt, becoming S after midnight.
Seas around 2 ft. Wave Detail: E 2 ft at 8 seconds and SW 1 foot
at 2 seconds.
.TUE...SW winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: E 2 ft
at 8 seconds and SW 1 foot at 2 seconds.
.TUE NIGHT THROUGH WED 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 2 ft at 9 seconds.
.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
7 seconds.
.THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
around 2 ft. A chance of showers.
.FRI AND FRI NIGHT...W winds 5 to 10 kt. Seas 1 foot or less.

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.

$$

ANZ254-201900-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
245 AM EDT Mon May 20 2024

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON...

.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. Patchy very light drizzle.
.MON...NE winds 10 to 15 kt, diminishing to 5 to 10 kt in the
afternoon. Seas 3 to 5 ft. Wave Detail: E 5 ft at 8 seconds.
Patchy very light drizzle in the morning.
.MON NIGHT...E winds 5 to 10 kt, becoming S after midnight. Seas
3 to 4 ft. Wave Detail: E 4 ft at 8 seconds.
.TUE...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 20 kt in the afternoon. Seas 3 to 4 ft. Wave Detail: E 4 ft
at 9 seconds and SW 1 foot at 5 seconds.
.TUE NIGHT THROUGH WED 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 SW
3 ft at 4 seconds.
.THU THROUGH FRI NIGHT...W winds 10 to 15 kt with gusts up to
20 kt. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and E
2 ft at 7 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.

$$

ANZ255-201900-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
245 AM EDT Mon May 20 2024

.REST OF TONIGHT...NE winds 10 to 15 kt with gusts up to 20 kt.
Seas 3 to 5 ft. Wave Detail: E 4 ft at 7 seconds and N 2 ft at
4 seconds. Patchy very light drizzle.
.MON...NE winds 10 to 15 kt. Gusts up to 20 kt in the morning.
Seas 2 to 4 ft. Wave Detail: E 4 ft at 8 seconds and N 1 foot at
3 seconds.
.MON NIGHT...E winds 5 to 10 kt, becoming S after midnight. Seas
2 to 4 ft. Wave Detail: E 4 ft at 8 seconds and NE 1 foot at
3 seconds.
.TUE...SW winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: E 3 ft
at 9 seconds and SW 2 ft at 3 seconds.
.TUE NIGHT THROUGH WED NIGHT...SW winds 15 to 20 kt. Seas 2 to
3 ft. Wave Detail: SW 3 ft at 4 seconds and E 3 ft at 9 seconds.
.THU THROUGH FRI NIGHT...W winds 15 to 20 kt. Seas 2 to 4 ft.
Wave Detail: SW 4 ft at 4 seconds and E 1 foot at 7 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.

$$

ANZ256-201900-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
245 AM EDT Mon May 20 2024

.REST OF TONIGHT...NE winds 10 to 15 kt with gusts up to 20 kt.
Seas 3 to 4 ft. Wave Detail: E 3 ft at 8 seconds and N 2 ft at
4 seconds. Patchy very light drizzle.
.MON...NE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft
at 8 seconds and N 2 ft at 3 seconds.
.MON NIGHT...SE winds around 5 kt, becoming SW around 5 kt after
midnight. Seas 2 to 3 ft. Wave Detail: E 3 ft at 8 seconds and N
1 foot at 3 seconds.
.TUE...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.
.TUE NIGHT THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up
to 20 kt. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and E
3 ft at 9 seconds.
.THU...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
4 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.
.FRI AND FRI NIGHT...W winds 5 to 10 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.

$$

ANZ232-201900-
Nantucket Sound-
245 AM EDT Mon May 20 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
7 seconds. Patchy very light drizzle.
.MON...NE winds 10 to 15 kt, diminishing to 5 to 10 kt in the
afternoon. Seas 2 to 3 ft. Wave Detail: E 2 ft at 8 seconds and
NE 1 foot at 3 seconds. Patchy very light drizzle in the morning.
.MON NIGHT...E winds 5 to 10 kt, becoming SW after midnight. Seas
2 to 3 ft. Wave Detail: E 2 ft at 8 seconds and NE 1 foot at
3 seconds.
.TUE...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: SW
2 ft at 3 seconds and E 2 ft at 8 seconds.
.TUE NIGHT THROUGH WED NIGHT...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 9 seconds.
.THU THROUGH FRI NIGHT...W winds 15 to 20 kt. Seas 2 to 3 ft.
Wave Detail: SW 3 ft at 4 seconds and E 1 foot at 7 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.

$$

ANZ233-201900-
Vineyard Sound-
245 AM EDT Mon May 20 2024

.REST OF TONIGHT...NE winds around 10 kt. Seas around 2 ft. Wave
Detail: N 1 foot at 3 seconds and E 1 foot at 7 seconds. Patchy
very light drizzle.
.MON...NE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: N
1 foot at 3 seconds and E 1 foot at 8 seconds.
.MON NIGHT...SE winds around 5 kt, becoming SW after midnight.
Seas 1 foot or less. Wave Detail: NE 1 foot at 2 seconds and E
1 foot at 8 seconds.
.TUE...SW winds 5 to 10 kt, increasing to 10 to 15 kt in the
afternoon. Seas 1 foot or less, then around 2 ft in the
afternoon. Wave Detail: SW 1 foot at 2 seconds and SW 1 foot at
6 seconds, becoming SW 2 ft at 3 seconds and SW 1 foot at
6 seconds.
.TUE NIGHT THROUGH WED NIGHT...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 9 seconds.
.THU...SW winds around 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Wave Detail: SW 3 ft at 4 seconds and E 1 foot at
7 seconds.
.THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
around 2 ft. A chance of showers.
.FRI AND FRI NIGHT...W winds 5 to 10 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.

$$

ANZ234-201900-
Buzzards Bay-
245 AM EDT Mon May 20 2024

.REST OF TONIGHT...NE winds around 10 kt. Seas around 2 ft. Wave
Detail: E 2 ft at 7 seconds and N 1 foot at 4 seconds. Patchy
very light drizzle.
.MON...NE winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: N
1 foot at 3 seconds and E 1 foot at 8 seconds.
.MON NIGHT...SE winds around 5 kt, becoming SW after midnight.
Seas 1 foot or less. Wave Detail: NE 1 foot at 2 seconds and E
1 foot at 8 seconds.
.TUE...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 20 kt in the afternoon. Seas 1 foot or less. Wave Detail:
SW 1 foot at 2 seconds and SW 1 foot at 6 seconds.
.TUE NIGHT THROUGH WED NIGHT...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 9 seconds.
.THU...SW winds around 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
7 seconds.
.THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
around 2 ft. A chance of showers.
.FRI AND FRI NIGHT...W winds 5 to 10 kt. Seas around 2 ft, then
1 foot or less.

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.

$$

ANZ235-201900-
Rhode Island Sound-
245 AM EDT Mon May 20 2024

.REST OF TONIGHT...NE winds around 10 kt. Seas around 2 ft. Wave
Detail: N 2 ft at 3 seconds and SE 2 ft at 7 seconds. Patchy very
light drizzle.
.MON...NE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: N 2 ft
at 3 seconds and SE 2 ft at 8 seconds.
.MON NIGHT...SE winds around 5 kt, becoming SW after midnight.
Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and NE 1 foot
at 3 seconds.
.TUE...SW winds 5 to 10 kt, increasing to 10 to 15 kt in the
afternoon. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds
and SW 2 ft at 6 seconds.
.TUE NIGHT THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up
to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and E
2 ft at 9 seconds.
.THU...SW winds around 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Wave Detail: SW 3 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
2 to 3 ft. A chance of showers.
.FRI AND FRI NIGHT...SW winds around 10 kt, becoming W. 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.

$$

ANZ237-201900-
Block Island Sound-
245 AM EDT Mon May 20 2024

.REST OF TONIGHT...NE winds around 10 kt. Seas 2 to 3 ft. Wave
Detail: SE 3 ft at 7 seconds and NE 1 foot at 4 seconds. Patchy
very light drizzle.
.MON...NE winds 5 to 10 kt, becoming E in the afternoon. Seas
around 2 ft. Wave Detail: E 2 ft at 7 seconds and NE 1 foot at
3 seconds.
.MON NIGHT...S winds around 5 kt. Seas around 2 ft. Wave Detail:
E 2 ft at 8 seconds and NE 1 foot at 3 seconds.
.TUE...SW winds 5 to 10 kt, increasing to 10 to 15 kt in the
afternoon. Seas around 2 ft. Wave Detail: SE 2 ft at 9 seconds
and SW 1 foot at 2 seconds.
.TUE NIGHT THROUGH WED NIGHT...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 E
2 ft at 9 seconds.
.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 E 1 foot at
8 seconds.
.THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft. A chance of showers and tstms.
.FRI...W winds 5 to 10 kt. Seas around 2 ft. A chance of showers.
.FRI NIGHT...NW winds 5 to 10 kt. Seas around 2 ft.

Winds and seas higher in and near tstms.

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.

$$

ANZ230-201900-
Boston Harbor-
245 AM EDT Mon May 20 2024

.REST OF TONIGHT...NE winds 5 to 10 kt. Waves 1 foot or less.
Patchy very light drizzle.
.MON...E winds around 5 kt. Waves 1 foot or less. Patchy very
light drizzle in the morning.
.MON NIGHT...S winds around 5 kt. Waves 1 foot or less.
.TUE...S winds 5 to 10 kt. Waves 1 foot or less.
.TUE NIGHT THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up
to 20 kt. Waves around 2 ft.
.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 and tstms.
.FRI AND FRI NIGHT...W winds 5 to 10 kt. Waves 1 foot or less.

Winds and waves higher in and near tstms.

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.

$$

ANZ236-201900-
Narragansett Bay-
245 AM EDT Mon May 20 2024

.REST OF TONIGHT...N winds 5 to 10 kt. Waves 1 foot or less.
Patchy very light drizzle.
.MON...NE winds 5 to 10 kt, becoming E in the afternoon. Waves
1 foot or less.
.MON NIGHT...S winds around 5 kt. Waves 1 foot or less.
.TUE...SW winds 5 to 10 kt, increasing to 10 to 15 kt in the
afternoon. Waves 1 foot or less.
.TUE NIGHT THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up
to 20 kt. Waves around 2 ft.
.THU...SW winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to
3 ft.
.THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Waves
2 to 3 ft. A chance of showers and tstms.
.FRI AND FRI NIGHT...W winds 5 to 10 kt. Waves around 2 ft.

Winds and waves higher in and near tstms.

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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