Coastal Waters Forecast
Issued by NWS Boston, MA

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FZUS51 KBOX 160802
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
402 AM EDT Sat Mar 16 2024

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

ANZ200-162100-
402 AM EDT Sat Mar 16 2024

.Synopsis for Massachusetts and Rhode Island coastal waters...
Weak high pres nudges into the coastal waters today. This results in
dry and quiet weather. Southwest winds strengthen tonight ahead of a
cold front. This will bring periods of showers to the coastal waters
throughout the day Sun. Drier on Mon and Tue, but with gusty winds.

$$

ANZ250-162100-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
402 AM EDT Sat Mar 16 2024

.TODAY...W winds around 5 kt, becoming S with gusts up to 20 kt
this afternoon. Seas 2 to 3 ft.
.TONIGHT...S winds 10 to 15 kt, increasing to 15 to 20 kt after
midnight. Gusts up to 25 kt. Seas 2 to 4 ft. Patchy fog after
midnight with vsby 1 to 3 NM.
.SUN...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to
6 ft. Patchy fog. A chance of showers. Vsby 1 NM or less in the
morning.
.SUN NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 4 ft.
.MON AND MON NIGHT...W winds 15 to 20 kt with gusts up to 25 kt.
Seas 2 to 4 ft.
.TUE THROUGH WED NIGHT...W winds 15 to 20 kt with gusts up to
30 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.

$$

ANZ251-162100-
Massachusetts Bay and Ipswich Bay-
402 AM EDT Sat Mar 16 2024

.TODAY...W winds around 5 kt, becoming S this afternoon. Seas
2 to 3 ft.
.TONIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Patchy fog after midnight with vsby 1 to 3 NM.
.SUN...S winds 15 to 20 kt, becoming SW 10 to 15 kt in the
afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. Showers likely,
mainly in the morning. Patchy fog in the morning with vsby 1 NM
or less.
.SUN NIGHT...W winds 10 to 15 kt, increasing to 15 to 20 kt after
midnight. Seas 2 to 3 ft.
.MON AND MON NIGHT...W winds 20 to 25 kt. Seas 2 to 3 ft.
.TUE THROUGH WED NIGHT...W winds 15 to 20 kt with gusts up to
25 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.

$$

ANZ231-162100-
Cape Cod Bay-
402 AM EDT Sat Mar 16 2024

.TODAY...NW winds around 5 kt, becoming S this afternoon. Seas
around 2 ft.
.TONIGHT...S winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
4 ft. Patchy fog after midnight with vsby 1 to 3 NM.
.SUN...S winds 15 to 20 kt, becoming SW 10 to 15 kt in the
afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. Patchy fog in the
morning. A chance of showers in the morning with vsby 1 NM or
less.
.SUN NIGHT...W winds 5 to 10 kt. Seas around 2 ft.
.MON AND MON NIGHT...W winds 10 to 15 kt with gusts up to 25 kt.
Seas around 2 ft.
.TUE THROUGH WED NIGHT...W winds 15 to 20 kt with gusts up to
25 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.

$$

ANZ254-162100-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
402 AM EDT Sat Mar 16 2024

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM EDT THIS MORNING...

.TODAY...NW winds 5 to 10 kt, becoming SW this afternoon. Seas
3 to 4 ft.
.TONIGHT...S winds 10 to 15 kt, increasing to 15 to 20 kt after
midnight. Gusts up to 25 kt. Seas 3 to 4 ft. Patchy fog after
midnight with vsby 1 NM or less.
.SUN...S winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to
6 ft. Patchy fog. A chance of showers in the morning. Vsby 1 NM
or less, increasing to 1 to 3 NM in the afternoon.
.SUN NIGHT...W winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. Seas 3 to 5 ft.
.MON AND MON NIGHT...W winds 15 to 20 kt with gusts up to 25 kt.
Seas 3 to 4 ft.
.TUE AND TUE NIGHT...W winds 15 to 20 kt with gusts up to 30 kt.
Seas 3 to 5 ft.
.WED AND WED NIGHT...W winds 10 to 15 kt with gusts up to 25 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.

$$

ANZ255-162100-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
402 AM EDT Sat Mar 16 2024

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM EDT THIS MORNING...

.TODAY...NW winds 5 to 10 kt, becoming SW this afternoon. Seas
2 to 4 ft.
.TONIGHT...S winds 10 to 15 kt, increasing to 15 to 20 kt after
midnight. Gusts up to 25 kt. Seas 2 to 4 ft. Patchy fog after
midnight with vsby 1 to 3 NM.
.SUN...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to
6 ft. Patchy fog. A chance of showers in the morning. Vsby 1 NM
or less, increasing to 1 to 3 NM in the afternoon.
.SUN NIGHT...W winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. Seas 4 to 6 ft. Patchy
fog in the evening with vsby 1 to 3 NM.
.MON AND MON NIGHT...W winds 20 to 25 kt. Seas 3 to 5 ft.
.TUE AND TUE NIGHT...W winds 20 to 25 kt, diminishing to 15 to
20 kt. Gusts up to 30 kt. Seas 4 to 6 ft.
.WED AND WED NIGHT...W winds 15 to 20 kt with gusts up to 25 kt.
Seas 3 to 5 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.

$$

ANZ256-162100-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
402 AM EDT Sat Mar 16 2024

.TODAY...NW winds 5 to 10 kt, becoming SW this afternoon. Seas
3 to 4 ft.
.TONIGHT...SW winds 10 to 15 kt, becoming S 15 to 20 kt after
midnight. Gusts up to 25 kt. Seas 3 to 5 ft. Patchy fog after
midnight with vsby 1 to 3 NM.
.SUN...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to
6 ft. Patchy fog. A chance of showers in the morning. Vsby 1 NM
or less, increasing to 1 to 3 NM in the afternoon.
.SUN NIGHT...W winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 4 to 6 ft.
.MON AND MON NIGHT...NW winds 20 to 25 kt with gusts up to 30 kt.
Seas 3 to 5 ft.
.TUE AND TUE NIGHT...W winds 20 to 25 kt, diminishing to 15 to
20 kt. Gusts up to 30 kt. Seas 4 to 6 ft.
.WED AND WED NIGHT...W winds 10 to 15 kt, increasing to 15 to
20 kt. Gusts up to 25 kt. Seas 3 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.

$$

ANZ232-162100-
Nantucket Sound-
402 AM EDT Sat Mar 16 2024

.TODAY...NW winds 5 to 10 kt, becoming SW this afternoon. Seas
around 2 ft.
.TONIGHT...S winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
3 ft. Patchy fog after midnight with vsby 1 to 3 NM.
.SUN...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to
4 ft. Patchy fog. A chance of showers in the morning with vsby
1 NM or less.
.SUN NIGHT...W winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. Seas 2 to 3 ft.
.MON AND MON NIGHT...W winds 15 to 20 kt with gusts up to 25 kt.
Seas 2 to 3 ft.
.TUE THROUGH WED NIGHT...W winds 15 to 20 kt with gusts up to
25 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.

$$

ANZ233-162100-
Vineyard Sound-
402 AM EDT Sat Mar 16 2024

.TODAY...NW winds around 5 kt, becoming SW this afternoon. Seas
around 2 ft.
.TONIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Patchy fog after midnight. A chance of showers after
midnight with vsby 1 to 3 NM.
.SUN...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
4 ft. Patchy fog. A chance of showers in the morning with vsby
1 NM or less.
.SUN NIGHT...W winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. Seas 2 to 4 ft.
.MON AND MON NIGHT...W winds 15 to 20 kt with gusts up to 25 kt.
Seas 2 to 4 ft.
.TUE THROUGH WED NIGHT...W winds 15 to 20 kt with gusts up to
25 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.

$$

ANZ234-162100-
Buzzards Bay-
402 AM EDT Sat Mar 16 2024

.TODAY...NW winds around 5 kt, becoming SW this afternoon. Seas
around 2 ft.
.TONIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Patchy fog after midnight. A chance of showers after
midnight with vsby 1 to 3 NM.
.SUN...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
4 ft. Patchy fog in the morning. A chance of showers in the
morning with vsby 1 to 3 NM.
.SUN NIGHT...W winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. Seas 2 to 3 ft.
.MON AND MON NIGHT...W winds 15 to 20 kt with gusts up to 25 kt.
Seas around 2 ft.
.TUE THROUGH WED NIGHT...W winds 15 to 20 kt with gusts up to
25 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.

$$

ANZ235-162100-
Rhode Island Sound-
402 AM EDT Sat Mar 16 2024

.TODAY...NW winds around 5 kt, becoming SW with gusts up to 20 kt
this afternoon. Seas 2 to 3 ft.
.TONIGHT...S winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
4 ft. Patchy fog after midnight. A chance of showers after
midnight with vsby 1 to 3 NM.
.SUN...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
5 ft. Patchy fog in the morning. A chance of showers in the
morning with vsby 1 NM or less.
.SUN NIGHT...W winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 3 to 5 ft.
.MON AND MON NIGHT...W winds 15 to 20 kt with gusts up to 25 kt.
Seas 2 to 4 ft.
.TUE THROUGH WED NIGHT...W winds 20 to 25 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.

$$

ANZ237-162100-
Block Island Sound-
402 AM EDT Sat Mar 16 2024

.TODAY...NW winds around 5 kt, becoming SW with gusts up to 20 kt
this afternoon. Seas 2 to 3 ft.
.TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. Patchy fog after midnight. A chance of showers after
midnight with vsby 1 to 3 NM.
.SUN...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
5 ft. Patchy fog in the morning with vsby 1 to 3 NM.
.SUN NIGHT...W winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. Seas 2 to 4 ft.
.MON AND MON NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt.
Seas 2 to 3 ft.
.TUE THROUGH WED NIGHT...W winds 15 to 20 kt with gusts up to
25 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.

$$

ANZ230-162100-
Boston Harbor-
402 AM EDT Sat Mar 16 2024

.TODAY...W winds around 5 kt, becoming S this afternoon. Waves
1 foot or less.
.TONIGHT...S winds 10 to 15 kt. Gusts up to 20 kt after midnight.
Waves 1 foot or less, then around 2 ft after midnight.
.SUN...S winds 10 to 15 kt, becoming W in the afternoon. Gusts up
to 20 kt. Waves around 2 ft. Showers likely, mainly in the
morning with vsby 1 to 3 NM.
.SUN NIGHT...W winds 15 to 20 kt. Waves around 2 ft.
.MON AND MON NIGHT...W winds 20 to 25 kt. Waves around 2 ft.
.TUE THROUGH WED NIGHT...W winds 20 to 25 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.

$$

ANZ236-162100-
Narragansett Bay-
402 AM EDT Sat Mar 16 2024

.TODAY...NW winds around 5 kt, becoming SW this afternoon. Waves
around 2 ft.
.TONIGHT...S winds around 10 kt. Gusts up to 20 kt after
midnight. Waves around 2 ft. Patchy fog after midnight with vsby
1 to 3 NM.
.SUN...SW winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to
4 ft. Patchy fog in the morning. A chance of showers in the
morning with vsby 1 to 3 NM.
.SUN NIGHT...W winds 5 to 10 kt. Waves 2 to 3 ft.
.MON AND MON NIGHT...W winds 10 to 15 kt with gusts up to 25 kt.
Waves 2 to 3 ft.
.TUE THROUGH WED NIGHT...W winds 10 to 15 kt with gusts up to
25 kt. Waves 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.

$$

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