538
FZUS51 KBOX 180804
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
404 AM EDT Thu Jul 18 2024

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

ANZ200-182100-
404 AM EDT Thu Jul 18 2024

.Synopsis for Massachusetts and Rhode Island coastal waters...
Showers and thunderstorms continue to form off a stalled frontal
boundary tonight into tomorrow morning. The stalled frontal boundary
will eventually move east in the afternoon allow for clearing
conditions. Winds remain WSW today, turning more WNW by tonight. Dry
and pleasant boating weather expected through the weekend.

$$

ANZ250-182100-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
404 AM EDT Thu Jul 18 2024

.TODAY...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE
3 ft at 9 seconds and W 1 foot at 3 seconds. Patchy fog this
morning. A chance of showers this morning with vsby 1 NM or less.
.TONIGHT...SW winds 5 to 10 kt, becoming N after midnight. Seas
2 to 3 ft. Wave Detail: SE 3 ft at 9 seconds and W 1 foot at
2 seconds.
.FRI...NW winds 5 to 10 kt, becoming SE in the afternoon. Seas
2 to 3 ft. Wave Detail: SE 2 ft at 9 seconds and NW 1 foot at
3 seconds.
.FRI NIGHT...S winds 5 to 10 kt, becoming SW after midnight. Seas
around 2 ft. Wave Detail: SE 2 ft at 7 seconds and W 1 foot at
2 seconds.
.SAT AND SAT NIGHT...SW winds 5 to 10 kt with gusts up to 20 kt.
Seas 2 to 3 ft. Wave Detail: SW 2 ft at 3 seconds and SE 2 ft at
8 seconds.
.SUN THROUGH MON NIGHT...S winds 5 to 10 kt. Seas around 2 ft.
Wave Detail: SE 2 ft at 9 seconds and W 1 foot at 3 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.

$$

ANZ251-182100-
Massachusetts Bay and Ipswich Bay-
404 AM EDT Thu Jul 18 2024

.TODAY...SW winds around 5 kt. Seas 1 foot or less. Wave Detail:
W 1 foot at 2 seconds and SE 1 foot at 8 seconds. Patchy fog this
morning. A chance of showers this morning with vsby 1 NM or less.
.TONIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Seas
1 foot or less. Wave Detail: W 1 foot at 2 seconds and SE 1 foot
at 9 seconds.
.FRI...NW winds 5 to 10 kt, becoming SE in the afternoon. Seas
1 foot or less. Wave Detail: NW 1 foot at 2 seconds and E 1 foot
at 9 seconds.
.FRI NIGHT...S winds 5 to 10 kt, becoming SW after midnight. Seas
around 2 ft. Wave Detail: SE 2 ft at 6 seconds and W 1 foot at
2 seconds.
.SAT AND SAT NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: SW 1 foot at 2 seconds and SE 1 foot at 9 seconds.
.SUN THROUGH MON NIGHT...S winds 5 to 10 kt. Seas 1 foot or less.
Wave Detail: W 1 foot at 2 seconds and SE 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.

$$

ANZ231-182100-
Cape Cod Bay-
404 AM EDT Thu Jul 18 2024

.TODAY...W winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S
2 ft at 7 seconds and SW 1 foot at 2 seconds. A chance of
showers. Patchy fog this morning with vsby 1 to 3 NM.
.TONIGHT...SW winds around 5 kt, becoming N after midnight. Seas
around 2 ft. Wave Detail: S 2 ft at 9 seconds and W 1 foot at
2 seconds.
.FRI...N winds 5 to 10 kt, becoming NE in the afternoon. Seas
around 2 ft. Wave Detail: N 1 foot at 3 seconds and E 1 foot at
7 seconds.
.FRI NIGHT...S winds 5 to 10 kt, becoming SW after midnight. Seas
1 foot or less. Wave Detail: NW 1 foot at 3 seconds and SE 1 foot
at 4 seconds.
.SAT AND SAT NIGHT...SW winds 5 to 10 kt. Seas 1 foot or less.
Wave Detail: SW 1 foot at 2 seconds and SE 1 foot at 5 seconds.
.SUN THROUGH MON NIGHT...S winds 5 to 10 kt. Seas 1 foot or less.
Wave Detail: W 1 foot at 2 seconds and SE 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.

$$

ANZ254-182100-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
404 AM EDT Thu Jul 18 2024

...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY AFTERNOON...

.TODAY...SW winds 10 to 15 kt with gusts up to 20 kt, diminishing
to 5 to 10 kt this afternoon. Seas 3 to 5 ft. Wave Detail: S 5 ft
at 8 seconds and W 1 foot at 3 seconds. Patchy fog. A chance of
showers. Vsby 1 NM or less, increasing to 1 to 3 NM this
afternoon.
.TONIGHT...SW winds 5 to 10 kt, becoming N after midnight. Seas
3 to 5 ft. Wave Detail: S 5 ft at 9 seconds.
.FRI...N winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: S 4 ft at
8 seconds and NW 1 foot at 3 seconds.
.FRI NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S
3 ft at 7 seconds and NW 1 foot at 3 seconds.
.SAT AND SAT NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave
Detail: S 3 ft at 7 seconds and SW 2 ft at 3 seconds.
.SUN THROUGH MON NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave
Detail: SE 3 ft at 8 seconds and W 1 foot at 3 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.

$$

ANZ255-182100-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
404 AM EDT Thu Jul 18 2024

...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY AFTERNOON...

.TODAY...SW winds 10 to 15 kt. Gusts up to 20 kt this morning.
Seas 4 to 6 ft. Wave Detail: S 6 ft at 8 seconds and SW 1 foot at
3 seconds. Patchy fog. Showers likely with isolated tstms this
morning. A chance of showers this afternoon. Vsby 1 to 3 NM.
.TONIGHT...SW winds 5 to 10 kt, becoming N after midnight. Seas
4 to 5 ft. Wave Detail: S 5 ft at 8 seconds.
.FRI...N winds 10 to 15 kt, becoming NE 5 to 10 kt in the
afternoon. Seas 3 to 5 ft. Wave Detail: S 5 ft at 8 seconds.
.FRI NIGHT...S winds around 5 kt, becoming SW after midnight.
Seas 2 to 4 ft. Wave Detail: S 4 ft at 7 seconds.
.SAT AND SAT NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave
Detail: S 3 ft at 7 seconds and SW 2 ft at 3 seconds.
.SUN THROUGH MON NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave
Detail: S 3 ft at 7 seconds and W 1 foot at 4 seconds.

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.

$$

ANZ256-182100-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
404 AM EDT Thu Jul 18 2024

...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY AFTERNOON...

.TODAY...W winds 10 to 15 kt. Seas 5 to 6 ft. Wave Detail: S 6 ft
at 8 seconds. A chance of showers. Patchy fog this morning. Vsby
1 to 3 NM.
.TONIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas
4 to 5 ft. Wave Detail: S 5 ft at 8 seconds.
.FRI...N winds 5 to 10 kt, becoming E in the afternoon. Seas 3 to
5 ft. Wave Detail: S 5 ft at 8 seconds.
.FRI NIGHT...SW winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: S
3 ft at 7 seconds.
.SAT AND SAT NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave
Detail: S 3 ft at 7 seconds and SW 2 ft at 3 seconds.
.SUN THROUGH MON NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave
Detail: S 3 ft at 8 seconds and W 1 foot at 3 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.

$$

ANZ232-182100-
Nantucket Sound-
404 AM EDT Thu Jul 18 2024

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 AM EDT THIS MORNING...

.TODAY...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW
2 ft at 3 seconds and S 2 ft at 8 seconds. Showers likely with
isolated tstms this morning, then a chance of showers this
afternoon. Patchy fog this morning. Vsby 1 to 3 NM.
.TONIGHT...SW winds 5 to 10 kt, becoming N after midnight. Seas
2 to 3 ft. Wave Detail: S 2 ft at 8 seconds and SW 1 foot at
3 seconds.
.FRI...N winds around 10 kt, becoming NE in the afternoon. Seas
2 to 3 ft. Wave Detail: NE 2 ft at 7 seconds and NW 1 foot at
4 seconds.
.FRI NIGHT...S winds 5 to 10 kt, becoming SW after midnight. Seas
around 2 ft. Wave Detail: SE 2 ft at 7 seconds and SW 1 foot at
3 seconds.
.SAT AND SAT NIGHT...SW winds 10 to 15 kt. Seas around 2 ft. Wave
Detail: SW 2 ft at 3 seconds and S 1 foot at 7 seconds.
.SUN THROUGH MON NIGHT...S winds 5 to 10 kt. Seas around 2 ft.
Wave Detail: W 1 foot at 3 seconds and SE 1 foot at 8 seconds.

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.

$$

ANZ233-182100-
Vineyard Sound-
404 AM EDT Thu Jul 18 2024

.TODAY...SW winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: S 3 ft
at 8 seconds and SW 1 foot at 4 seconds. Showers likely, mainly
this morning. Patchy fog this morning with vsby 1 NM or less.
.TONIGHT...SW winds 5 to 10 kt, becoming N after midnight. Seas
2 to 3 ft. Wave Detail: S 3 ft at 8 seconds and SW 1 foot at
3 seconds.
.FRI...N winds 5 to 10 kt, becoming SE in the afternoon. Seas
2 to 3 ft. Wave Detail: SE 2 ft at 7 seconds and NW 1 foot at
3 seconds.
.FRI NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
S 2 ft at 7 seconds and SW 1 foot at 3 seconds.
.SAT AND SAT NIGHT...SW winds 10 to 15 kt. Seas around 2 ft. Wave
Detail: SW 2 ft at 3 seconds and S 2 ft at 7 seconds.
.SUN THROUGH MON NIGHT...S winds 5 to 10 kt. Seas around 2 ft.
Wave Detail: S 2 ft at 7 seconds and SW 1 foot at 4 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.

$$

ANZ234-182100-
Buzzards Bay-
404 AM EDT Thu Jul 18 2024

.TODAY...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft
at 8 seconds and SW 1 foot at 4 seconds. A chance of showers.
Patchy fog this morning with vsby 1 to 3 NM.
.TONIGHT...SW winds 5 to 10 kt, becoming N after midnight. Seas
2 to 3 ft. Wave Detail: S 2 ft at 8 seconds and SW 1 foot at
4 seconds.
.FRI...N winds 5 to 10 kt, becoming SE in the afternoon. Seas
around 2 ft. Wave Detail: E 2 ft at 6 seconds and NW 1 foot at
3 seconds.
.FRI NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
S 2 ft at 7 seconds and SW 1 foot at 3 seconds.
.SAT AND SAT 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 S 1 foot
at 7 seconds.
.SUN THROUGH MON NIGHT...S winds 5 to 10 kt. Seas around 2 ft.
Wave Detail: SW 1 foot at 4 seconds and S 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.

$$

ANZ235-182100-
Rhode Island Sound-
404 AM EDT Thu Jul 18 2024

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

.TODAY...W winds 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: S 5 ft
at 8 seconds. A chance of showers. Patchy fog this morning with
vsby 1 to 3 NM.
.TONIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas
3 to 4 ft. Wave Detail: S 4 ft at 8 seconds.
.FRI...N winds 5 to 10 kt, becoming S in the afternoon. Seas 2 to
4 ft. Wave Detail: S 4 ft at 8 seconds.
.FRI NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S
3 ft at 8 seconds.
.SAT AND SAT NIGHT...W winds 10 to 15 kt. Seas 2 to 3 ft. Wave
Detail: S 3 ft at 7 seconds and SW 2 ft at 3 seconds.
.SUN THROUGH MON NIGHT...S winds 5 to 10 kt. Seas around 2 ft.
Wave Detail: S 2 ft at 7 seconds and W 1 foot at 3 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.

$$

ANZ237-182100-
Block Island Sound-
404 AM EDT Thu Jul 18 2024

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

.TODAY...W winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: S 4 ft
at 8 seconds. Patchy fog this morning. A chance of showers this
morning with vsby 1 to 3 NM.
.TONIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas
3 to 4 ft. Wave Detail: S 4 ft at 8 seconds.
.FRI...N winds 5 to 10 kt, becoming S in the afternoon. Seas 2 to
3 ft. Wave Detail: S 3 ft at 8 seconds.
.FRI NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S
3 ft at 8 seconds.
.SAT AND SAT NIGHT...W winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: S 2 ft at 7 seconds and SW 1 foot at 3 seconds.
.SUN THROUGH MON NIGHT...S winds 5 to 10 kt. Seas around 2 ft.
Wave Detail: SE 2 ft at 8 seconds and W 1 foot at 3 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.

$$

ANZ230-182100-
Boston Harbor-
404 AM EDT Thu Jul 18 2024

.TODAY...SW winds around 5 kt. Waves 1 foot or less. Patchy fog
this morning. Showers likely this morning with vsby 1 to 3 NM.
.TONIGHT...W winds 5 to 10 kt, becoming NW after midnight. Waves
1 foot or less.
.FRI...NW winds 5 to 10 kt, becoming E in the afternoon. Waves
1 foot or less.
.FRI NIGHT...S winds 5 to 10 kt, becoming SW after midnight.
Waves 1 foot or less.
.SAT AND SAT NIGHT...SW winds 5 to 10 kt. Waves 1 foot or less.
.SUN THROUGH MON NIGHT...S winds 5 to 10 kt. Waves 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.

$$

ANZ236-182100-
Narragansett Bay-
404 AM EDT Thu Jul 18 2024

.TODAY...W winds 5 to 10 kt. Waves 2 to 4 ft. A chance of showers
this morning. A slight chance of showers this afternoon. Patchy
fog this morning with vsby 1 to 3 NM.
.TONIGHT...W winds 5 to 10 kt, becoming N after midnight. Waves
2 to 4 ft.
.FRI...N winds 5 to 10 kt, becoming S in the afternoon. Waves
2 to 3 ft.
.FRI NIGHT...SW winds 5 to 10 kt. Waves around 2 ft.
.SAT AND SAT NIGHT...SW winds 5 to 10 kt. Waves around 2 ft.
.SUN THROUGH MON NIGHT...S winds 5 to 10 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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