123
FZUS51 KBOX 200806
CWFBOX

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

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

ANZ200-202100-
405 AM EDT Mon May 20 2024

.Synopsis for Massachusetts and Rhode Island coastal waters...
High pres over coastal Maine settles over the waters Mon and
continues thru Wed. A cold front brings the risk for showers and
thunderstorms on Thurs. High pres then return to the waters for
Friday into the Memorial Day Weekend.

$$

ANZ250-202100-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
405 AM EDT Mon May 20 2024

.TODAY...NE winds 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: E 4 ft
at 8 seconds.
.TONIGHT...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...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 3 ft at
4 seconds.
.WED AND 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
8 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.

$$

ANZ251-202100-
Massachusetts Bay and Ipswich Bay-
405 AM EDT Mon May 20 2024

.TODAY...NE winds 5 to 10 kt, becoming E this afternoon. Seas
2 to 3 ft. Wave Detail: E 3 ft at 8 seconds.
.TONIGHT...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...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 4 ft. Wave Detail: E 3 ft at 9 seconds and S 2 ft at
4 seconds.
.WED AND WED NIGHT...SW 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 SW 2 ft at
3 seconds.
.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 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.

$$

ANZ231-202100-
Cape Cod Bay-
405 AM EDT Mon May 20 2024

.TODAY...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
this morning.
.TONIGHT...SE winds around 5 kt, becoming S after midnight. 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, 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 9 seconds and SW 1 foot at 3 seconds.
.TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
around 2 ft. Wave Detail: E 2 ft at 9 seconds and SW 1 foot at
3 seconds.
.WED AND 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
8 seconds.
.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 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.

$$

ANZ254-202100-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
405 AM EDT Mon May 20 2024

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

.TODAY...NE winds 10 to 15 kt, diminishing to 5 to 10 kt this
afternoon. Seas 3 to 5 ft. Wave Detail: E 5 ft at 8 seconds.
Patchy very light drizzle this morning.
.TONIGHT...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 4 seconds.
.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 SW 2 ft at
4 seconds.
.WED AND WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt.
Seas 3 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and E 3 ft at
8 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.

$$

ANZ255-202100-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
405 AM EDT Mon May 20 2024

.TODAY...NE winds 10 to 15 kt. Gusts up to 20 kt this morning.
Seas 2 to 4 ft. Wave Detail: E 4 ft at 8 seconds and NE 2 ft at
3 seconds.
.TONIGHT...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 4 ft
at 9 seconds and SW 1 foot at 5 seconds.
.TUE NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail:
SW 3 ft at 4 seconds and E 3 ft at 9 seconds.
.WED AND 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 8 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.

$$

ANZ256-202100-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
405 AM EDT Mon May 20 2024

.TODAY...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.
.TONIGHT...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 NE
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.
.TUE NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: E
3 ft at 9 seconds and SW 2 ft at 4 seconds.
.WED AND 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
8 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 7 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.

$$

ANZ232-202100-
Nantucket Sound-
405 AM EDT Mon May 20 2024

.TODAY...NE winds 10 to 15 kt, diminishing to 5 to 10 kt this
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 this morning.
.TONIGHT...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
2 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...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.
.WED AND WED NIGHT...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
2 ft at 8 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.

$$

ANZ233-202100-
Vineyard Sound-
405 AM EDT Mon May 20 2024

.TODAY...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.
.TONIGHT...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 1 foot at 4 seconds and E 1 foot at
9 seconds.
.TUE NIGHT...SW winds 10 to 15 kt. Seas around 2 ft in the
evening, then 1 foot or less. Wave Detail: SW 2 ft at 3 seconds
and E 1 foot at 9 seconds, becoming SW 1 foot at 4 seconds and E
1 foot at 8 seconds.
.WED AND 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 8 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.

$$

ANZ234-202100-
Buzzards Bay-
405 AM EDT Mon May 20 2024

.TODAY...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.
.TONIGHT...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 5 seconds.
.TUE NIGHT...SW winds 10 to 15 kt. Seas 1 foot or less, then
around 2 ft after midnight. Wave Detail: SW 1 foot at 3 seconds
and E 1 foot at 9 seconds, becoming SW 2 ft at 4 seconds and E
1 foot at 9 seconds.
.WED AND 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 8 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.

$$

ANZ235-202100-
Rhode Island Sound-
405 AM EDT Mon May 20 2024

.TODAY...NE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: N
2 ft at 3 seconds and SE 2 ft at 7 seconds.
.TONIGHT...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 6 seconds
and SE 2 ft at 9 seconds.
.TUE NIGHT...SW winds 10 to 15 kt. Seas around 2 ft. Wave Detail:
SW 2 ft at 3 seconds and E 2 ft at 9 seconds.
.WED AND 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 SE 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 SE 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.

$$

ANZ237-202100-
Block Island Sound-
405 AM EDT Mon May 20 2024

.TODAY...NE winds 5 to 10 kt, becoming E this afternoon. Seas
around 2 ft. Wave Detail: E 2 ft at 7 seconds and NE 1 foot at
3 seconds.
.TONIGHT...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: SW 2 ft at 3 seconds
and E 2 ft at 8 seconds.
.TUE NIGHT...SW winds 10 to 15 kt. Seas around 2 ft. Wave Detail:
SW 2 ft at 3 seconds and E 2 ft at 9 seconds.
.WED AND 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.

$$

ANZ230-202100-
Boston Harbor-
405 AM EDT Mon May 20 2024

.TODAY...E winds around 5 kt. Waves 1 foot or less. Patchy very
light drizzle this morning.
.TONIGHT...S winds around 5 kt. Waves 1 foot or less.
.TUE...S winds 5 to 10 kt. Waves 1 foot or less.
.TUE NIGHT...SW winds 10 to 15 kt. Waves around 2 ft.
.WED AND 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.

$$

ANZ236-202100-
Narragansett Bay-
405 AM EDT Mon May 20 2024

.TODAY...NE winds 5 to 10 kt, becoming E this afternoon. Waves
1 foot or less.
.TONIGHT...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...SW winds around 10 kt. Waves around 2 ft.
.WED AND 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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