815
FZUS51 KBOX 200803
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
403 AM EDT Thu Jun 20 2024

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

ANZ200-202100-
403 AM EDT Thu Jun 20 2024

.Synopsis for Massachusetts and Rhode Island coastal waters...
High pres remains anchored over the far eastern outer waters
today which will maintain SSW wind gusts 20-25 knots for most of the
waters this afternoon. Back door cold front will shift winds to the
ENE for Friday and Saturday. Scattered showers and thunderstorms
possible each afternoon and evening through Sunday. Cold frontal
passage Monday will usher in drier conditions next week.

$$

ANZ250-202100-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
403 AM EDT Thu Jun 20 2024

.TODAY...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
10 seconds.
.TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming
W 5 to 10 kt after midnight. Seas 2 to 4 ft. Wave Detail: SW 2 ft
at 4 seconds and SE 2 ft at 9 seconds.
.FRI...NW winds 5 to 10 kt, becoming NE in the afternoon. Seas
around 2 ft. Wave Detail: SE 2 ft at 9 seconds and NW 1 foot at
3 seconds. Patchy fog. Vsby 1 to 3 NM in the morning.
.FRI NIGHT...E winds around 5 kt. Seas around 2 ft. Wave Detail:
E 2 ft at 7 seconds. A chance of showers in the evening, then
showers likely after midnight.
.SAT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: NE 2 ft
at 7 seconds and SE 1 foot at 3 seconds. Showers likely, mainly
in the morning.
.SAT NIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E
2 ft at 6 seconds. A chance of showers.
.SUN...S winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
4 ft. A chance of showers.
.SUN NIGHT AND MON...SW winds 15 to 20 kt with gusts up to 25 kt.
Seas 3 to 5 ft. Showers likely.
.MON NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 4 ft. Showers likely.

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-
403 AM EDT Thu Jun 20 2024

.TODAY...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW
1 foot at 3 seconds and E 1 foot at 9 seconds. Isolated showers
and tstms this afternoon. Some tstms may produce gusty winds,
frequent lightning, and heavy rainfall this afternoon.
.TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW
2 ft at 3 seconds and E 1 foot at 9 seconds.
.FRI...N winds 5 to 10 kt, becoming NE in the afternoon. Seas
1 foot or less. Wave Detail: W 1 foot at 2 seconds and E 1 foot
at 9 seconds. Patchy fog. Scattered showers. Scattered tstms in
the afternoon. Vsby 1 to 3 NM in the morning.
.FRI NIGHT...E winds around 5 kt. Seas 1 foot or less. Wave
Detail: NE 1 foot at 6 seconds. Showers likely.
.SAT...E winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: S
1 foot at 3 seconds and NE 1 foot at 6 seconds. A chance of
showers.
.SAT NIGHT...NE winds 5 to 10 kt. Seas 1 foot or less. Wave
Detail: S 1 foot at 2 seconds and NE 1 foot at 5 seconds. A
chance of showers.
.SUN...S winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
3 ft. A chance of showers.
.SUN NIGHT THROUGH MON NIGHT...W winds 15 to 20 kt with gusts up
to 25 kt. Seas 2 to 3 ft. Showers likely.

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-
403 AM EDT Thu Jun 20 2024

.TODAY...SW winds 10 to 15 kt. Gusts up to 20 kt this afternoon.
Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and SE 1 foot
at 9 seconds.
.TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. Seas around 2 ft. Wave
Detail: SW 2 ft at 3 seconds and SE 1 foot at 9 seconds.
.FRI...W winds around 5 kt, becoming NE in the afternoon. Seas
1 foot or less. Wave Detail: W 1 foot at 2 seconds and SE 1 foot
at 9 seconds. Scattered showers. Scattered tstms in the
afternoon.
.FRI NIGHT...E winds around 5 kt. Seas 1 foot or less. Wave
Detail: E 1 foot at 4 seconds. A chance of showers. Patchy fog in
the evening.
.SAT...SE winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: S
1 foot at 2 seconds and NE 1 foot at 5 seconds. A chance of
showers.
.SAT NIGHT...SE winds 5 to 10 kt, becoming SW after midnight.
Seas 1 foot or less. Wave Detail: SE 1 foot at 2 seconds and E
1 foot at 5 seconds. A chance of showers.
.SUN...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
4 ft. A chance of showers.
.SUN NIGHT AND MON...SW winds 15 to 20 kt, diminishing to 10 to
15 kt. Gusts up to 25 kt. Seas 2 to 4 ft. Showers likely.
.MON NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft. A chance of showers.

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.

$$

ANZ254-202100-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
403 AM EDT Thu Jun 20 2024

.TODAY...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 SE 2 ft at 9 seconds.
.TONIGHT...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 SE 2 ft at 9 seconds.
.FRI...W winds 5 to 10 kt, becoming N in the afternoon. Seas 2 to
3 ft. Wave Detail: W 2 ft at 4 seconds and SE 2 ft at 8 seconds.
.FRI NIGHT...SE winds around 5 kt, becoming S after midnight.
Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and W 1 foot
at 4 seconds. A chance of showers. Patchy fog in the evening.
.SAT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft
at 8 seconds and SW 1 foot at 4 seconds. A chance of showers.
.SAT NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SW
2 ft at 4 seconds and SE 2 ft at 8 seconds. A chance of showers.
.SUN...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
4 ft. A chance of showers.
.SUN NIGHT...SW winds 20 to 25 kt with gusts up to 30 kt. Seas
4 to 6 ft. A chance of showers.
.MON AND MON NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt.
Seas 4 to 6 ft. Showers likely.

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-
403 AM EDT Thu Jun 20 2024

.TODAY...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.
.TONIGHT...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 8 seconds.
Patchy fog in the evening.
.FRI...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft
at 5 seconds and SE 2 ft at 8 seconds.
.FRI NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SW
2 ft at 5 seconds and SE 2 ft at 8 seconds. Patchy fog in the
evening. A chance of showers after midnight. Vsby 1 to 3 NM in
the evening.
.SAT AND SAT NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave
Detail: S 3 ft at 7 seconds. A chance of showers in the morning.
A chance of showers after midnight.
.SUN...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
5 ft. Wave Detail: SW 5 ft at 6 seconds and SE 1 foot at
9 seconds. A chance of showers.
.SUN NIGHT...SW winds 20 to 25 kt with gusts up to 30 kt. Seas
5 to 7 ft. A chance of showers.
.MON...SW winds 20 to 25 kt. Seas 5 to 7 ft. Showers likely.
.MON NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas
5 to 7 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.

$$

ANZ256-202100-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
403 AM EDT Thu Jun 20 2024

.TODAY...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.
.TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
around 3 ft. Wave Detail: SW 3 ft at 4 seconds and SE 2 ft at
8 seconds.
.FRI...SW winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: SW 3 ft
at 5 seconds and SE 2 ft at 8 seconds.
.FRI NIGHT...SW winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: SW
2 ft at 5 seconds and SE 2 ft at 8 seconds. Patchy fog in the
evening. A chance of showers after midnight. Vsby 1 NM or less in
the evening.
.SAT AND SAT NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave
Detail: S 3 ft at 6 seconds. A chance of showers in the morning.
A chance of showers through the night.
.SUN...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
5 ft. Wave Detail: S 5 ft at 7 seconds. A chance of showers.
.SUN NIGHT AND MON...SW winds 20 to 25 kt, diminishing to 15 to
20 kt. Gusts up to 30 kt. Seas 5 to 7 ft. Showers likely.
.MON NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas
5 to 7 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.

$$

ANZ232-202100-
Nantucket Sound-
403 AM EDT Thu Jun 20 2024

.TODAY...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
3 ft. Wave Detail: SW 2 ft at 3 seconds and SE 1 foot at
9 seconds.
.TONIGHT...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 1 foot at
9 seconds.
.FRI...W winds 5 to 10 kt, becoming S in the afternoon. Seas
around 2 ft. Wave Detail: W 1 foot at 4 seconds and SE 1 foot at
8 seconds.
.FRI NIGHT...S winds 5 to 10 kt. Seas around 2 ft in the evening,
then 1 foot or less. Wave Detail: SW 1 foot at 5 seconds and SE
1 foot at 8 seconds, becoming SW 1 foot at 3 seconds and SE
1 foot at 8 seconds. A chance of showers. Patchy fog in the
evening.
.SAT...SW winds 5 to 10 kt. Seas 1 foot or less, then around 2 ft
in the afternoon. Wave Detail: SW 1 foot at 3 seconds and SE
1 foot at 7 seconds, becoming SW 1 foot at 3 seconds and SE
1 foot at 8 seconds. A chance of showers in the morning.
.SAT NIGHT...SW winds 10 to 15 kt. Seas around 2 ft. Wave Detail:
SW 2 ft at 3 seconds and SE 1 foot at 8 seconds. A chance of
showers.
.SUN...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
3 ft. A chance of showers.
.SUN NIGHT AND MON...SW winds 20 to 25 kt, diminishing to 15 to
20 kt. Gusts up to 30 kt. Seas 3 to 4 ft. Showers likely.
.MON NIGHT...W winds 15 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.

$$

ANZ233-202100-
Vineyard Sound-
403 AM EDT Thu Jun 20 2024

.TODAY...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 1 foot at
9 seconds.
.TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE
1 foot at 8 seconds.
.FRI...SW winds 5 to 10 kt, becoming S in the afternoon. Seas
around 2 ft. Wave Detail: SW 2 ft at 5 seconds and SE 1 foot at
8 seconds.
.FRI NIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
SW 1 foot at 5 seconds and SE 1 foot at 8 seconds. A chance of
showers. Patchy fog in the evening.
.SAT AND SAT NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: S 2 ft at 6 seconds. A chance of showers.
.SUN...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
4 ft. Wave Detail: S 4 ft at 6 seconds. A chance of showers.
.SUN NIGHT AND MON...SW winds 20 to 25 kt, diminishing to 15 to
20 kt. Seas 3 to 5 ft. Showers likely.
.MON NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 5 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.

$$

ANZ234-202100-
Buzzards Bay-
403 AM EDT Thu Jun 20 2024

.TODAY...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 SE 1 foot at
9 seconds.
.TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. Seas around 2 ft. Wave
Detail: SW 2 ft at 4 seconds and SE 1 foot at 9 seconds.
.FRI...SW winds around 5 kt, becoming SE in the afternoon. Seas
around 2 ft. Wave Detail: SW 1 foot at 5 seconds and SE 1 foot at
8 seconds. Scattered tstms in the afternoon.
.FRI NIGHT...S winds around 5 kt. Seas around 2 ft in the
evening, then 1 foot or less. Wave Detail: S 1 foot at 6 seconds.
A chance of showers. Patchy fog in the evening.
.SAT AND SAT NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: S 2 ft at 6 seconds. A chance of showers.
.SUN...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
4 ft. Wave Detail: SW 3 ft at 4 seconds and SE 1 foot at
7 seconds. A chance of showers.
.SUN NIGHT AND MON...SW winds 20 to 25 kt, diminishing to 15 to
20 kt. Seas 3 to 4 ft. Showers likely.
.MON NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 4 ft. A chance of showers.

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.

$$

ANZ235-202100-
Rhode Island Sound-
403 AM EDT Thu Jun 20 2024

.TODAY...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.
.TONIGHT...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 2 ft at 8 seconds.
.FRI...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft
at 5 seconds and SE 2 ft at 8 seconds.
.FRI NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SW
2 ft at 5 seconds and SE 2 ft at 8 seconds. A chance of showers.
Patchy fog in the evening.
.SAT AND SAT NIGHT...S winds 10 to 15 kt. Seas 2 to 3 ft. Wave
Detail: S 3 ft at 7 seconds. A chance of showers.
.SUN...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
4 ft. Wave Detail: S 4 ft at 7 seconds. A chance of showers.
.SUN NIGHT AND MON...SW winds 20 to 25 kt, diminishing to 15 to
20 kt. Gusts up to 30 kt. Seas 4 to 6 ft. Showers likely.
.MON NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
4 to 6 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.

$$

ANZ237-202100-
Block Island Sound-
403 AM EDT Thu Jun 20 2024

.TODAY...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.
.TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave
Detail: SW 2 ft at 4 seconds and SE 2 ft at 9 seconds.
.FRI...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft
at 5 seconds and SE 2 ft at 8 seconds. Scattered showers and
tstms in the afternoon.
.FRI NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SW
2 ft at 5 seconds and SE 2 ft at 8 seconds. A chance of showers.
Scattered tstms in the evening.
.SAT AND SAT NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave
Detail: S 2 ft at 6 seconds. A chance of showers.
.SUN...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
4 ft. Wave Detail: S 3 ft at 6 seconds. A chance of showers.
.SUN NIGHT AND MON...SW winds 15 to 20 kt with gusts up to 25 kt.
Seas 4 to 5 ft. Showers likely.
.MON NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 5 ft. A chance of showers.

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-
403 AM EDT Thu Jun 20 2024

.TODAY...SW winds 5 to 10 kt. Waves 1 foot or less. Isolated
showers and tstms this afternoon. Some tstms may produce gusty
winds, frequent lightning, and heavy rainfall this afternoon.
.TONIGHT...SW winds 5 to 10 kt. Waves 1 foot or less.
.FRI...N winds around 5 kt, becoming NE in the afternoon. Waves
1 foot or less. Scattered showers. Scattered tstms in the
afternoon.
.FRI NIGHT...E winds around 5 kt. Waves 1 foot or less. Showers
likely.
.SAT...E winds 5 to 10 kt. Waves 1 foot or less. A chance of
showers.
.SAT NIGHT...NE winds 5 to 10 kt. Waves 1 foot or less. A chance
of showers.
.SUN...S winds 10 to 15 kt with gusts up to 25 kt. Waves around
2 ft. A chance of showers.
.SUN NIGHT THROUGH MON NIGHT...W winds 10 to 15 kt with gusts up
to 25 kt. Waves around 2 ft. Showers likely.

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-
403 AM EDT Thu Jun 20 2024

.TODAY...SW winds 5 to 10 kt, increasing to 10 to 15 kt with
gusts up to 20 kt this afternoon. Waves around 2 ft.
.TONIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt in the evening.
Waves around 2 ft.
.FRI...SW winds around 5 kt, becoming S in the afternoon. Waves
around 2 ft. Scattered showers and tstms in the afternoon.
.FRI NIGHT...S winds around 5 kt. Waves around 2 ft. A chance of
showers. Scattered tstms in the evening.
.SAT AND SAT NIGHT...S winds 5 to 10 kt. Waves around 2 ft. A
chance of showers.
.SUN...S winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to
4 ft. A chance of showers.
.SUN NIGHT AND MON...SW winds 15 to 20 kt, diminishing to 10 to
15 kt. Gusts up to 25 kt. Waves 3 to 5 ft. Showers likely.
.MON NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Waves
2 to 4 ft. A chance of showers.

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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