790
FZUS51 KBOX 171105
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
704 AM EDT Tue Sep 17 2024

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

ANZ200-180000-
704 AM EDT Tue Sep 17 2024

.Synopsis for Massachusetts and Rhode Island coastal waters...
High pres over New England will continue to provide dry, tranquil
boating weather through much of Wed. Low pres near the Carolinas and
mid-Atlantic coast then spreads a period of enhanced onshore
easterly winds, building seas and periods of rain late Wed and into
Thurs. High pres then returns for Fri into the weekend, with a
continued enhanced east-northeast breeze.

$$

ANZ250-180000-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
704 AM EDT Tue Sep 17 2024

.TODAY...SW winds 5 to 10 kt, becoming S this afternoon. Seas
around 2 ft. Wave Detail: SE 2 ft at 8 seconds and SW 1 foot at
3 seconds.
.TONIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE
2 ft at 8 seconds and SW 1 foot at 3 seconds. Patchy fog after
midnight. Patchy drizzle after midnight with vsby 1 NM or less.
.WED...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft
at 8 seconds and SW 1 foot at 3 seconds. Patchy fog in the
morning. Patchy drizzle in the morning with vsby 1 to 3 NM.
.WED NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE
3 ft at 8 seconds and SE 2 ft at 11 seconds. A chance of showers.
Vsby 1 to 3 NM after midnight.
.THU AND THU NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt.
Seas 3 to 5 ft. Wave Detail: SE 5 ft at 8 seconds and E 4 ft at
7 seconds. A chance of showers through the day. A chance of
showers after midnight.
.FRI...NE winds around 15 kt with gusts up to 25 kt. Seas 4 to
6 ft. Wave Detail: E 6 ft at 8 seconds. A chance of showers.
.FRI NIGHT THROUGH SAT NIGHT...NE winds 15 to 20 kt with gusts up
to 25 kt. Seas 5 to 7 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.

$$

ANZ251-180000-
Massachusetts Bay and Ipswich Bay-
704 AM EDT Tue Sep 17 2024

.TODAY...SW winds 5 to 10 kt, becoming SE this afternoon. Seas
around 2 ft. Wave Detail: E 2 ft at 8 seconds and SW 1 foot at
2 seconds.
.TONIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE
2 ft at 8 seconds and SE 1 foot at 4 seconds. Patchy fog after
midnight. Patchy drizzle after midnight with vsby 1 NM or less.
.WED...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE
2 ft at 9 seconds and SW 1 foot at 2 seconds. Patchy fog in the
morning. Patchy drizzle in the morning with vsby 1 to 3 NM.
.WED NIGHT...E winds 5 to 10 kt, becoming NE after midnight. Seas
around 2 ft. Wave Detail: SE 2 ft at 8 seconds and E 2 ft at
11 seconds. A chance of showers.
.THU AND THU NIGHT...NE winds 10 to 15 kt. Seas 2 to 4 ft. Wave
Detail: E 4 ft at 10 seconds and NE 3 ft at 6 seconds. A chance
of showers through the day. A chance of showers after midnight.
.FRI...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to
6 ft. Wave Detail: E 4 ft at 8 seconds. A chance of showers.
.FRI NIGHT THROUGH SAT NIGHT...NE winds 10 to 15 kt with gusts up
to 25 kt. Seas 4 to 6 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.

$$

ANZ231-180000-
Cape Cod Bay-
704 AM EDT Tue Sep 17 2024

.TODAY...W winds around 5 kt, becoming SE this afternoon. Seas
1 foot or less. Wave Detail: W 1 foot at 2 seconds and E 1 foot
at 7 seconds.
.TONIGHT...S winds 5 to 10 kt, diminishing to around 5 kt after
midnight. Seas 1 foot or less. Wave Detail: S 1 foot at 2 seconds
and E 1 foot at 7 seconds. Patchy drizzle after midnight.
.WED...E winds around 5 kt, increasing to 5 to 10 kt in the
afternoon. Seas around 2 ft. Wave Detail: E 2 ft at 7 seconds and
SE 1 foot at 12 seconds. Patchy fog in the morning. Patchy
drizzle in the morning with vsby 1 to 3 NM.
.WED NIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
SE 2 ft at 8 seconds and E 1 foot at 2 seconds. A chance of
showers. Vsby 1 to 3 NM after midnight.
.THU AND THU NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 4 ft. Wave Detail: SE 3 ft at 8 seconds and E 2 ft at
11 seconds. A chance of showers through the day. A chance of
showers after midnight.
.FRI...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to
4 ft. Wave Detail: SE 3 ft at 9 seconds and N 2 ft at 3 seconds.
A chance of showers.
.FRI NIGHT THROUGH SAT NIGHT...NE 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.

$$

ANZ254-180000-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
704 AM EDT Tue Sep 17 2024

.TODAY...S winds around 5 kt, becoming SE this afternoon. Seas
2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds and SE 1 foot at
12 seconds. Patchy fog. Vsby 1 to 3 NM, decreasing to 1 NM or
less this afternoon.
.TONIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE
3 ft at 8 seconds and SE 1 foot at 12 seconds. Patchy fog. Patchy
drizzle after midnight. Vsby 1 to 3 NM.
.WED...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft
at 8 seconds and SE 2 ft at 12 seconds. Patchy drizzle in the
morning, then a chance of showers in the afternoon.
.WED NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: SE
3 ft at 8 seconds and SE 2 ft at 11 seconds. A chance of showers
in the evening, then showers likely after midnight. Vsby 1 to
3 NM.
.THU AND THU NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt.
Seas 4 to 6 ft. Wave Detail: SE 5 ft at 8 seconds and NE 4 ft at
7 seconds. A chance of showers. Vsby 1 to 3 NM.
.FRI...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 5 to
7 ft. Wave Detail: NE 5 ft at 7 seconds and SE 4 ft at 9 seconds.
A chance of showers.
.FRI NIGHT THROUGH SAT NIGHT...NE winds 15 to 20 kt with gusts up
to 25 kt. Seas 6 to 7 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.

$$

ANZ255-180000-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
704 AM EDT Tue Sep 17 2024

.TODAY...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft
at 9 seconds. Patchy fog this morning with vsby 1 to 3 NM.
.TONIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE
3 ft at 8 seconds and SE 1 foot at 12 seconds. Patchy fog in the
evening. Patchy drizzle after midnight. Vsby 1 to 3 NM in the
evening.
.WED...E winds 10 to 15 kt. Seas 2 to 4 ft. Wave Detail: SE 4 ft
at 8 seconds and SE 1 foot at 12 seconds. A chance of showers.
Patchy drizzle in the morning.
.WED NIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 3 to 5 ft. Wave Detail: SE 4 ft at 8 seconds and E
1 foot at 3 seconds. Showers likely. Vsby 1 to 3 NM.
.THU AND THU NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt.
Seas 4 to 6 ft. Wave Detail: SE 5 ft at 8 seconds and NE 3 ft at
5 seconds. A chance of showers. Vsby 1 to 3 NM.
.FRI...NE winds 15 to 20 kt. Seas 4 to 6 ft. Wave Detail: NE 4 ft
at 6 seconds and SE 3 ft at 9 seconds. A chance of showers.
.FRI NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas
4 to 6 ft.
.SAT AND SAT NIGHT...NE winds 20 to 25 kt. Seas 5 to 7 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.

$$

ANZ256-180000-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
704 AM EDT Tue Sep 17 2024

.TODAY...E winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft
at 9 seconds. Patchy fog this afternoon with vsby 1 to 3 NM.
.TONIGHT...E winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: SE
4 ft at 8 seconds and SE 1 foot at 13 seconds. Patchy fog. Vsby
1 to 3 NM in the evening.
.WED...E winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas 3 to 5 ft. Wave Detail: SE 4 ft at 8 seconds and SE 1 foot
at 12 seconds. A chance of showers. Vsby 1 to 3 NM in the
afternoon.
.WED NIGHT...NE winds around 15 kt. Gusts up to 20 kt in the
evening. Seas 4 to 5 ft. Wave Detail: SE 5 ft at 8 seconds and SE
1 foot at 12 seconds. Showers likely, mainly in the evening.
Patchy fog in the evening. Vsby 1 to 3 NM.
.THU AND THU NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt.
Seas 4 to 6 ft. Wave Detail: SE 5 ft at 8 seconds and NE 2 ft at
4 seconds. A chance of showers through the day. A chance of
showers after midnight.
.FRI...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to
6 ft. Wave Detail: NE 4 ft at 5 seconds and SE 4 ft at 8 seconds.
A chance of showers.
.FRI NIGHT AND SAT...NE winds 15 to 20 kt, increasing to 20 to
25 kt. Gusts up to 30 kt. Seas 4 to 6 ft.
.SAT NIGHT...NE winds 20 to 25 kt. Seas 5 to 7 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.

$$

ANZ232-180000-
Nantucket Sound-
704 AM EDT Tue Sep 17 2024

.TODAY...NE winds around 5 kt, becoming SE this afternoon. Seas
around 2 ft. Wave Detail: E 1 foot at 7 seconds and SE 1 foot at
9 seconds.
.TONIGHT...SE winds around 5 kt. Seas around 2 ft. Wave Detail:
SE 2 ft at 8 seconds and S 1 foot at 2 seconds. Patchy drizzle
after midnight.
.WED...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE
1 foot at 7 seconds and SE 1 foot at 12 seconds. Patchy drizzle
in the morning, then a chance of showers in the afternoon.
.WED NIGHT...NE winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: E
2 ft at 3 seconds and SE 2 ft at 8 seconds. A chance of showers
in the evening, then showers likely after midnight. Vsby 1 to
3 NM.
.THU AND THU NIGHT...NE winds around 15 kt with gusts up to
20 kt. Seas 3 to 4 ft. Wave Detail: NE 3 ft at 4 seconds and SE
2 ft at 7 seconds. A chance of showers through the day. A chance
of showers after midnight. Vsby 1 to 3 NM.
.FRI...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
4 ft. Wave Detail: NE 3 ft at 4 seconds and SE 2 ft at 8 seconds.
A chance of showers.
.FRI NIGHT THROUGH SAT NIGHT...NE winds 20 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.

$$

ANZ233-180000-
Vineyard Sound-
704 AM EDT Tue Sep 17 2024

.TODAY...NE winds around 5 kt, becoming S this afternoon. Seas
1 foot or less. Wave Detail: SE 1 foot at 9 seconds.
.TONIGHT...SE winds around 5 kt. Seas 1 foot or less. Wave
Detail: SE 1 foot at 9 seconds and SE 1 foot at 13 seconds.
Patchy fog after midnight. Patchy drizzle after midnight.
.WED...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft
at 8 seconds and E 1 foot at 2 seconds. A chance of showers.
Patchy drizzle in the morning.
.WED NIGHT...NE winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail:
SE 2 ft at 8 seconds and E 1 foot at 2 seconds. A chance of
showers in the evening, then showers likely after midnight. Vsby
1 to 3 NM.
.THU AND THU 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 SE 2 ft at
7 seconds. A chance of showers through the day. A chance of
showers after midnight.
.FRI...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
4 ft. Wave Detail: NE 2 ft at 3 seconds and SE 2 ft at 8 seconds.
A chance of showers.
.FRI NIGHT THROUGH SAT NIGHT...NE 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.

$$

ANZ234-180000-
Buzzards Bay-
704 AM EDT Tue Sep 17 2024

.TODAY...N winds around 5 kt, becoming S this afternoon. Seas
1 foot or less. Wave Detail: E 1 foot at 7 seconds and SE 1 foot
at 9 seconds. Patchy fog this morning with vsby 1 to 3 NM.
.TONIGHT...SE winds around 5 kt. Seas 1 foot or less. Wave
Detail: SE 1 foot at 3 seconds and SE 1 foot at 8 seconds. Patchy
fog after midnight. Patchy drizzle after midnight.
.WED...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft
at 8 seconds and E 1 foot at 2 seconds. A chance of showers.
Patchy drizzle in the morning.
.WED NIGHT...NE winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail:
SE 2 ft at 8 seconds and E 1 foot at 2 seconds. A chance of
showers. Vsby 1 to 3 NM in the evening.
.THU AND THU 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 SE 2 ft at
7 seconds. A chance of showers through the day. A chance of
showers after midnight.
.FRI...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
4 ft. Wave Detail: NE 2 ft at 3 seconds and SE 2 ft at 8 seconds.
A chance of showers.
.FRI NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas
2 to 4 ft.
.SAT AND SAT NIGHT...NE winds 15 to 20 kt with gusts up to 30 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.

$$

ANZ235-180000-
Rhode Island Sound-
704 AM EDT Tue Sep 17 2024

.TODAY...NE winds around 5 kt, becoming SE this afternoon. Seas
2 to 3 ft. Wave Detail: SE 3 ft at 9 seconds.
.TONIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE
3 ft at 9 seconds and SE 1 foot at 13 seconds. Patchy fog in the
evening. Patchy drizzle after midnight. Vsby 1 to 3 NM in the
evening.
.WED...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft
at 8 seconds and E 1 foot at 2 seconds. A chance of showers.
Patchy drizzle in the morning.
.WED NIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail:
SE 4 ft at 8 seconds and NE 2 ft at 3 seconds. A chance of
showers. Vsby 1 to 3 NM.
.THU AND THU NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt.
Seas 3 to 4 ft. Wave Detail: SE 4 ft at 7 seconds and NE 2 ft at
4 seconds. A chance of showers through the day. A chance of
showers after midnight.
.FRI...NE winds 15 to 20 kt. Seas 3 to 4 ft. Wave Detail: NE 3 ft
at 4 seconds and SE 3 ft at 8 seconds. A chance of showers.
.FRI NIGHT THROUGH SAT NIGHT...NE 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.

$$

ANZ237-180000-
Block Island Sound-
704 AM EDT Tue Sep 17 2024

.TODAY...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft
at 9 seconds.
.TONIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE
3 ft at 9 seconds and SE 1 foot at 12 seconds. Patchy drizzle
after midnight.
.WED...NE winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: SE 4 ft
at 8 seconds and E 1 foot at 2 seconds. A chance of showers.
Patchy drizzle in the morning. Patchy fog in the morning.
.WED NIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail:
SE 4 ft at 8 seconds and NE 1 foot at 3 seconds. A chance of
showers. Vsby 1 to 3 NM in the evening.
.THU AND THU NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt.
Seas 3 to 4 ft. Wave Detail: SE 4 ft at 8 seconds and NE 2 ft at
4 seconds. A chance of showers through the day. A chance of
showers after midnight.
.FRI...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
4 ft. Wave Detail: SE 4 ft at 8 seconds and NE 2 ft at 4 seconds.
A chance of showers.
.FRI NIGHT THROUGH SAT NIGHT...NE 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.

$$

ANZ230-180000-
Boston Harbor-
704 AM EDT Tue Sep 17 2024

.TODAY...SW winds 5 to 10 kt, becoming SE this afternoon. Waves
1 foot or less.
.TONIGHT...S winds 5 to 10 kt. Waves 1 foot or less. Patchy
drizzle after midnight with vsby 1 to 3 NM.
.WED...S winds around 5 kt, becoming E in the afternoon. Waves
1 foot or less. Patchy fog in the morning. Patchy drizzle in the
morning with vsby 1 to 3 NM.
.WED NIGHT...E winds 5 to 10 kt, becoming NE after midnight.
Waves 1 foot or less. A chance of showers.
.THU AND THU NIGHT...N winds 5 to 10 kt. Waves 2 to 3 ft. A
chance of showers through the day. A chance of showers after
midnight.
.FRI...NE winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to
3 ft. A chance of showers.
.FRI NIGHT THROUGH SAT NIGHT...NE winds 10 to 15 kt with gusts up
to 20 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.

$$

ANZ236-180000-
Narragansett Bay-
704 AM EDT Tue Sep 17 2024

.TODAY...N winds around 5 kt, becoming S this afternoon. Waves
around 2 ft.
.TONIGHT...S winds around 5 kt, becoming E around 5 kt after
midnight. Waves around 2 ft. Patchy drizzle after midnight.
.WED...E winds 5 to 10 kt. Waves 2 to 3 ft. A chance of showers.
Patchy drizzle in the morning. Patchy fog in the morning with
vsby 1 to 3 NM.
.WED NIGHT...NE winds 5 to 10 kt. Waves 2 to 3 ft. A chance of
showers.
.THU AND THU NIGHT...N winds 10 to 15 kt with gusts up to 20 kt.
Waves 2 to 3 ft. A chance of showers through the day. A chance of
showers after midnight.
.FRI...NE winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to
3 ft. A chance of showers.
.FRI NIGHT THROUGH SAT NIGHT...NE 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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