421
FZUS51 KBOX 210803
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
403 AM EDT Sat Sep 21 2024

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

ANZ200-212100-
403 AM EDT Sat Sep 21 2024

.Synopsis for Massachusetts and Rhode Island coastal waters...
Rainy and gusty NE winds continue into tonight due to a low pres
SE of Nantucket. Conditions begin to improve Sun with high
pres building in from the N by Mon, lasting into Wed.

$$

ANZ250-212100-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
403 AM EDT Sat Sep 21 2024

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

.TODAY...NE winds 20 to 25 kt with gusts up to 35 kt. Seas 9 to
11 ft. Wave Detail: E 10 ft at 10 seconds and NE 4 ft at
6 seconds. Showers, mainly this morning. Areas of fog this
morning. Vsby 1 to 3 NM.
.TONIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 7 to
9 ft. Wave Detail: E 9 ft at 9 seconds and NE 2 ft at 5 seconds.
A chance of showers in the evening with vsby 1 to 3 NM.
.SUN...NE winds 20 to 25 kt. Seas 7 to 9 ft. Wave Detail: E 8 ft
at 9 seconds and NE 3 ft at 5 seconds.
.SUN NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt,
diminishing to 10 to 15 kt after midnight. Seas 7 to 9 ft. Wave
Detail: E 8 ft at 10 seconds and NE 2 ft at 5 seconds.
.MON AND MON NIGHT...E winds around 10 kt. Seas 6 to 8 ft. Wave
Detail: E 7 ft at 11 seconds and NE 1 foot at 3 seconds.
.TUE AND TUE NIGHT...E winds around 10 kt. Seas 5 to 7 ft. Wave
Detail: E 6 ft at 10 seconds.
.WED...E winds around 10 kt. Seas 4 to 6 ft.
.WED NIGHT...E winds around 10 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.

$$

ANZ251-212100-
Massachusetts Bay and Ipswich Bay-
403 AM EDT Sat Sep 21 2024

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

.TODAY...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 6 to
9 ft. Wave Detail: E 9 ft at 9 seconds and NE 4 ft at 6 seconds.
Showers, mainly this morning. Areas of fog this morning. Vsby
1 to 3 NM.
.TONIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to
8 ft. Wave Detail: E 8 ft at 9 seconds and NE 2 ft at 5 seconds.
A chance of showers in the evening with vsby 1 to 3 NM.
.SUN...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to
7 ft. Wave Detail: E 7 ft at 9 seconds and NE 2 ft at 4 seconds.
.SUN NIGHT...NE winds 15 to 20 kt, diminishing to around 10 kt
after midnight. Seas 6 to 7 ft. Wave Detail: E 7 ft at 10 seconds
and NE 2 ft at 4 seconds.
.MON AND MON NIGHT...E winds 5 to 10 kt. Seas 5 to 7 ft. Wave
Detail: E 7 ft at 10 seconds and NE 1 foot at 3 seconds.
.TUE THROUGH WED...E winds around 10 kt. Seas 4 to 6 ft. Wave
Detail: E 6 ft at 10 seconds.
.WED NIGHT...E winds around 10 kt. Seas 4 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.

$$

ANZ231-212100-
Cape Cod Bay-
403 AM EDT Sat Sep 21 2024

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

.TODAY...NE winds 20 to 25 kt with gusts up to 35 kt. Seas 5 to
8 ft. Wave Detail: NE 8 ft at 9 seconds and N 6 ft at 5 seconds.
Showers. Areas of fog this morning. Vsby 1 to 3 NM.
.TONIGHT...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to
6 ft. Wave Detail: E 6 ft at 9 seconds and N 5 ft at 5 seconds.
Showers likely in the evening with vsby 1 to 3 NM.
.SUN...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to
6 ft. Wave Detail: E 6 ft at 9 seconds and N 4 ft at 5 seconds.
.SUN NIGHT...NE winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. Gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: E
6 ft at 10 seconds and N 4 ft at 5 seconds.
.MON AND MON NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt.
Seas 4 to 5 ft. Wave Detail: E 5 ft at 10 seconds and N 2 ft at
5 seconds.
.TUE THROUGH WED...E winds around 10 kt. Seas 3 to 4 ft. Wave
Detail: E 4 ft at 10 seconds and NE 1 foot at 3 seconds.
.WED NIGHT...E winds around 10 kt. Seas around 3 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.

$$

ANZ254-212100-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
403 AM EDT Sat Sep 21 2024

...GALE WARNING IN EFFECT UNTIL 8 AM EDT THIS MORNING...

.TODAY...NE winds 25 to 30 kt with gusts up to 40 kt. Seas 9 to
13 ft. Wave Detail: NE 12 ft at 9 seconds and NE 2 ft at
5 seconds. Showers. Areas of fog this morning. Vsby 1 to 3 NM,
decreasing to 1 NM or less this afternoon.
.TONIGHT...NE winds 20 to 25 kt with gusts up to 35 kt. Seas 8 to
11 ft. Wave Detail: E 10 ft at 9 seconds and NE 2 ft at
4 seconds. A chance of showers in the evening with vsby 1 to
3 NM.
.SUN...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 7 to
10 ft. Wave Detail: E 9 ft at 9 seconds and NE 1 foot at
4 seconds.
.SUN NIGHT...NE winds 20 to 25 kt with gusts up to 30 kt,
diminishing to 15 to 20 kt after midnight. Seas 8 to 11 ft. Wave
Detail: E 9 ft at 10 seconds and NE 1 foot at 4 seconds.
.MON...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 7 to
10 ft. Wave Detail: E 9 ft at 11 seconds and NE 1 foot at
3 seconds.
.MON NIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 6 to 9 ft. Wave Detail: E 8 ft at 11 seconds and NE
1 foot at 3 seconds.
.TUE AND TUE NIGHT...E winds 10 to 15 kt. Seas 5 to 8 ft.
.WED...E winds around 10 kt. Seas 5 to 6 ft.
.WED NIGHT...E winds around 10 kt. Seas 5 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.

$$

ANZ255-212100-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
403 AM EDT Sat Sep 21 2024

...GALE WARNING IN EFFECT UNTIL 8 AM EDT THIS MORNING...

.TODAY...NE winds 25 to 30 kt with gusts up to 40 kt. Seas 8 to
11 ft. Wave Detail: E 9 ft at 9 seconds and N 5 ft at 5 seconds.
Showers. Areas of fog this morning. Vsby 1 to 3 NM, decreasing to
1 NM or less this afternoon.
.TONIGHT...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 6 to
9 ft. Wave Detail: E 9 ft at 9 seconds and N 4 ft at 5 seconds. A
chance of showers. Vsby 1 to 3 NM.
.SUN...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 6 to
9 ft. Wave Detail: E 8 ft at 9 seconds and N 4 ft at 5 seconds.
.SUN NIGHT...NE winds 20 to 25 kt with gusts up to 30 kt,
diminishing to 15 to 20 kt after midnight. Seas 6 to 9 ft. Wave
Detail: E 8 ft at 10 seconds and NE 3 ft at 4 seconds.
.MON...NE winds 15 to 20 kt. Seas 6 to 9 ft. Wave Detail: E 8 ft
at 11 seconds and NE 2 ft at 4 seconds.
.MON NIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 5 to 8 ft. Wave Detail: E 7 ft at 11 seconds and NE
2 ft at 4 seconds.
.TUE AND TUE NIGHT...NE winds 10 to 15 kt. Seas 5 to 7 ft.
.WED...E winds 10 to 15 kt. Seas 4 to 6 ft.
.WED NIGHT...E winds 10 to 15 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.

$$

ANZ256-212100-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
403 AM EDT Sat Sep 21 2024

...GALE WARNING IN EFFECT UNTIL 8 AM EDT THIS MORNING...

.TODAY...N winds 25 to 30 kt with gusts up to 40 kt. Seas 6 to
9 ft. Wave Detail: E 7 ft at 9 seconds and N 6 ft at 6 seconds. A
chance of showers. Vsby 1 to 3 NM.
.TONIGHT...N winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to
8 ft. Wave Detail: N 6 ft at 5 seconds and E 6 ft at 9 seconds. A
chance of showers in the evening with vsby 1 to 3 NM.
.SUN...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to
7 ft. Wave Detail: E 6 ft at 9 seconds and N 4 ft at 5 seconds.
.SUN NIGHT...NE winds 20 to 25 kt with gusts up to 30 kt,
diminishing to 15 to 20 kt after midnight. Seas 5 to 7 ft. Wave
Detail: E 7 ft at 9 seconds and NE 3 ft at 5 seconds.
.MON AND MON NIGHT...NE winds 15 to 20 kt. Seas 5 to 7 ft. Wave
Detail: E 7 ft at 11 seconds and NE 1 foot at 4 seconds.
.TUE THROUGH WED...E winds 10 to 15 kt. Seas 4 to 6 ft. Wave
Detail: E 6 ft at 11 seconds.
.WED NIGHT...E winds 10 to 15 kt. Seas 4 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.

$$

ANZ232-212100-
Nantucket Sound-
403 AM EDT Sat Sep 21 2024

...GALE WARNING IN EFFECT UNTIL 8 AM EDT THIS MORNING...

.TODAY...NE winds 25 to 30 kt, diminishing to 20 to 25 kt this
afternoon. Gusts up to 40 kt. Seas 5 to 7 ft. Wave Detail: E 6 ft
at 9 seconds and N 4 ft at 5 seconds. Showers. Areas of fog this
morning. Vsby 1 to 3 NM.
.TONIGHT...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to
6 ft. Wave Detail: E 5 ft at 10 seconds and N 4 ft at 5 seconds.
A chance of showers. Vsby 1 to 3 NM.
.SUN...NE winds 20 to 25 kt, diminishing to 15 to 20 kt in the
afternoon. Gusts up to 30 kt. Seas 4 to 6 ft. Wave Detail: E 4 ft
at 9 seconds and N 3 ft at 4 seconds.
.SUN NIGHT...NE winds 15 to 20 kt. Gusts up to 30 kt in the
evening. Seas 4 to 6 ft. Wave Detail: E 5 ft at 10 seconds and NE
3 ft at 4 seconds.
.MON...NE winds 15 to 20 kt. Seas 4 to 6 ft. Wave Detail: E 4 ft
at 11 seconds and NE 3 ft at 4 seconds.
.MON NIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 3 to 5 ft. Wave Detail: E 4 ft at 11 seconds and NE
2 ft at 4 seconds.
.TUE THROUGH WED...E winds 10 to 15 kt. Seas 3 to 5 ft.
.WED NIGHT...E winds 10 to 15 kt. Seas 3 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.

$$

ANZ233-212100-
Vineyard Sound-
403 AM EDT Sat Sep 21 2024

...GALE WARNING IN EFFECT UNTIL 8 AM EDT THIS MORNING...

.TODAY...NE winds 20 to 25 kt with gusts up to 35 kt. Seas 4 to
6 ft. Wave Detail: N 3 ft at 5 seconds and E 2 ft at 9 seconds.
Showers. Areas of fog this morning. Vsby 1 to 3 NM.
.TONIGHT...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to
4 ft. Wave Detail: N 3 ft at 5 seconds and E 2 ft at 9 seconds. A
chance of showers. Vsby 1 to 3 NM in the evening.
.SUN...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
4 ft. Wave Detail: N 2 ft at 5 seconds and E 2 ft at 9 seconds.
.SUN NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt,
diminishing to 10 to 15 kt after midnight. Seas 3 to 4 ft. Wave
Detail: NE 2 ft at 4 seconds and E 2 ft at 9 seconds.
.MON AND MON NIGHT...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
11 seconds.
.TUE THROUGH WED...E winds 10 to 15 kt. Seas 2 to 3 ft. Wave
Detail: E 2 ft at 11 seconds and NE 1 foot at 3 seconds.
.WED NIGHT...E winds 10 to 15 kt. Seas around 2 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.

$$

ANZ234-212100-
Buzzards Bay-
403 AM EDT Sat Sep 21 2024

...GALE WARNING IN EFFECT UNTIL 8 AM EDT THIS MORNING...

.TODAY...N winds 20 to 25 kt with gusts up to 35 kt. Seas 4 to
5 ft. Wave Detail: N 3 ft at 5 seconds and E 3 ft at 9 seconds.
Showers. Areas of fog this morning. Vsby 1 to 3 NM.
.TONIGHT...N winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to
4 ft. Wave Detail: N 3 ft at 5 seconds and E 3 ft at 9 seconds. A
chance of showers. Vsby 1 to 3 NM in the evening.
.SUN...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
4 ft. Wave Detail: E 3 ft at 9 seconds and N 2 ft at 4 seconds.
.SUN NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt,
diminishing to 10 to 15 kt after midnight. Seas 3 to 5 ft. Wave
Detail: E 3 ft at 9 seconds and NE 2 ft at 3 seconds.
.MON AND MON NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt.
Seas 3 to 5 ft. Wave Detail: E 3 ft at 10 seconds and NE 2 ft at
3 seconds.
.TUE THROUGH WED...E winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 4 ft. Wave Detail: E 3 ft at 11 seconds and NE 1 foot
at 2 seconds.
.WED NIGHT...E winds 10 to 15 kt. Seas 2 to 3 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.

$$

ANZ235-212100-
Rhode Island Sound-
403 AM EDT Sat Sep 21 2024

...GALE WARNING IN EFFECT UNTIL 8 AM EDT THIS MORNING...

.TODAY...N winds 25 to 30 kt, diminishing to 20 to 25 kt this
afternoon. Seas 5 to 6 ft. Wave Detail: N 5 ft at 5 seconds and
SE 4 ft at 9 seconds. Showers likely. Vsby 1 to 3 NM.
.TONIGHT...N winds 20 to 25 kt, diminishing to 15 to 20 kt after
midnight. Gusts up to 30 kt. Seas 4 to 5 ft. Wave Detail: N 4 ft
at 5 seconds and SE 3 ft at 9 seconds. A chance of showers. Vsby
1 to 3 NM in the evening.
.SUN...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to
5 ft. Wave Detail: N 3 ft at 4 seconds and SE 3 ft at 9 seconds.
.SUN NIGHT...NE winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. Gusts up to 25 kt. Seas 4 to 5 ft. Wave Detail: E
4 ft at 10 seconds and NE 3 ft at 4 seconds.
.MON AND MON NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt.
Seas 3 to 4 ft. Wave Detail: E 4 ft at 11 seconds and NE 2 ft at
4 seconds.
.TUE THROUGH WED...E winds 10 to 15 kt. Seas 3 to 4 ft. Wave
Detail: E 4 ft at 12 seconds and NE 1 foot at 3 seconds.
.WED NIGHT...E winds 10 to 15 kt. Seas around 3 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.

$$

ANZ237-212100-
Block Island Sound-
403 AM EDT Sat Sep 21 2024

...GALE WARNING IN EFFECT UNTIL 8 AM EDT THIS MORNING...

.TODAY...N winds 20 to 25 kt with gusts up to 35 kt. Seas 4 to
6 ft. Wave Detail: E 5 ft at 9 seconds and N 4 ft at 5 seconds. A
chance of showers. Vsby 1 to 3 NM this afternoon.
.TONIGHT...N winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to
5 ft. Wave Detail: E 5 ft at 9 seconds and NE 4 ft at 5 seconds.
A chance of showers in the evening with vsby 1 to 3 NM.
.SUN...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
5 ft. Wave Detail: E 4 ft at 9 seconds and NE 3 ft at 4 seconds.
.SUN NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt,
diminishing to 10 to 15 kt after midnight. Seas 4 to 5 ft. Wave
Detail: E 4 ft at 9 seconds and NE 3 ft at 4 seconds.
.MON AND MON NIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft. Wave
Detail: E 5 ft at 12 seconds and NE 1 foot at 4 seconds.
.TUE THROUGH WED...E winds 10 to 15 kt. Seas 3 to 4 ft. Wave
Detail: E 4 ft at 11 seconds and NE 1 foot at 3 seconds.
.WED NIGHT...E winds around 10 kt. Seas 3 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.

$$

ANZ230-212100-
Boston Harbor-
403 AM EDT Sat Sep 21 2024

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

.TODAY...NE winds 15 to 20 kt with gusts up to 25 kt. Waves 2 to
3 ft, except 4 to 6 ft at the outer harbor entrance. Showers,
mainly this morning. Areas of fog this morning. Vsby 1 to 3 NM
this afternoon.
.TONIGHT...NE winds 10 to 15 kt, increasing to 15 to 20 kt after
midnight. Gusts up to 25 kt. Waves 2 to 3 ft. A chance of showers
in the evening with vsby 1 to 3 NM.
.SUN...NE winds 15 to 20 kt with gusts up to 25 kt. Waves 2 to
3 ft, except 4 to 6 ft at the outer harbor entrance.
.SUN NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. Waves 2 to 3 ft in the
evening, then 1 foot or less. At the outer harbor entrance, waves
3 to 5 ft.
.MON AND MON NIGHT...NE winds 5 to 10 kt. Waves 2 to 3 ft.
.TUE THROUGH WED...E winds 5 to 10 kt. Waves 2 to 3 ft.
.WED NIGHT...E winds 5 to 10 kt. Waves around 2 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.

$$

ANZ236-212100-
Narragansett Bay-
403 AM EDT Sat Sep 21 2024

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

.TODAY...N winds 15 to 20 kt with gusts up to 30 kt. Waves around
3 ft. Showers likely. Vsby 1 to 3 NM this afternoon.
.TONIGHT...N winds 15 to 20 kt, diminishing to 10 to 15 kt after
midnight. Gusts up to 25 kt. Waves 2 to 3 ft. A chance of
showers. Vsby 1 to 3 NM in the evening.
.SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to
3 ft.
.SUN NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. Waves 2 to 3 ft.
.MON AND MON NIGHT...NE winds 5 to 10 kt. Waves 2 to 3 ft.
.TUE THROUGH WED...E winds 5 to 10 kt. Waves 2 to 3 ft.
.WED NIGHT...E winds 5 to 10 kt. Waves 2 to 3 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.

$$

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