Coastal Waters Forecast
Issued by NWS Boston, MA

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FZUS51 KBOX 260203
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
1003 PM EDT Wed Sep 25 2024

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

ANZ200-261500-
1003 PM EDT Wed Sep 25 2024

.Synopsis for Massachusetts and Rhode Island coastal waters...
High pres moves offshore tonight. A warm front will cross the waters
Thu followed by a cold front Thu night. High pres builds across New
Eng and the waters from Fri through next Mon.

$$

ANZ250-261500-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
1003 PM EDT Wed Sep 25 2024

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

.OVERNIGHT...SE winds around 10 kt. Seas 5 to 6 ft. Wave Detail:
E 6 ft at 12 seconds.
.THU...SE winds 10 to 15 kt, becoming S 15 to 20 kt in the
afternoon. Gusts up to 25 kt. Seas 5 to 6 ft. Wave Detail: E 6 ft
at 11 seconds and S 2 ft at 4 seconds. A chance of showers in the
afternoon with vsby 1 to 3 NM.
.THU NIGHT...S winds 15 to 20 kt, becoming W around 10 kt after
midnight. Seas 4 to 6 ft. Wave Detail: E 6 ft at 11 seconds and S
2 ft at 4 seconds. Showers likely in the evening. A chance of
showers after midnight. Vsby 1 to 3 NM in the evening.
.FRI...W winds 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: E 5 ft at
10 seconds.
.FRI NIGHT...SW winds around 5 kt, becoming N after midnight.
Seas 3 to 4 ft. Wave Detail: E 4 ft at 10 seconds.
.SAT AND SAT NIGHT...NE winds 5 to 10 kt. Seas 2 to 3 ft. Wave
Detail: E 3 ft at 10 seconds and NE 2 ft at 4 seconds.
.SUN THROUGH MON NIGHT...NE winds 5 to 10 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.

$$

ANZ251-261500-
Massachusetts Bay and Ipswich Bay-
1003 PM EDT Wed Sep 25 2024

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

.OVERNIGHT...SE winds around 10 kt. Seas 4 to 5 ft. Wave Detail:
E 5 ft at 12 seconds. A slight chance of showers.
.THU...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to
6 ft. Wave Detail: E 6 ft at 11 seconds and S 2 ft at 4 seconds.
A chance of showers in the afternoon.
.THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt,
becoming W 5 to 10 kt after midnight. Seas 3 to 5 ft. Wave
Detail: E 5 ft at 11 seconds and S 2 ft at 4 seconds. Showers
likely in the evening. A chance of showers after midnight. Vsby
1 to 3 NM in the evening.
.FRI...W winds 5 to 10 kt, becoming SW in the afternoon. Seas
3 to 4 ft. Wave Detail: E 4 ft at 11 seconds and SW 1 foot at
3 seconds.
.FRI NIGHT...SW winds around 5 kt, becoming N after midnight.
Seas 2 to 3 ft. Wave Detail: E 3 ft at 10 seconds.
.SAT AND SAT NIGHT...NE winds 5 to 10 kt. Seas 2 to 3 ft. Wave
Detail: E 3 ft at 10 seconds and NE 1 foot at 3 seconds.
.SUN THROUGH MON NIGHT...NE winds 5 to 10 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.

$$

ANZ231-261500-
Cape Cod Bay-
1003 PM EDT Wed Sep 25 2024

.OVERNIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
3 ft at 11 seconds and E 1 foot at 2 seconds.
.THU...SE winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas 2 to 4 ft. Wave Detail: E 4 ft at 11 seconds and S 2 ft at
3 seconds. A chance of showers in the afternoon.
.THU NIGHT...S 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: E 4 ft
at 11 seconds and S 2 ft at 3 seconds. Showers likely. Vsby 1 to
3 NM in the evening.
.FRI...NW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft
at 11 seconds and W 1 foot at 2 seconds.
.FRI NIGHT...S winds around 5 kt, becoming N after midnight. Seas
around 2 ft. Wave Detail: E 2 ft at 10 seconds and SW 1 foot at
3 seconds.
.SAT AND SAT NIGHT...NE winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: E 2 ft at 10 seconds and N 1 foot at 2 seconds.
.SUN THROUGH MON NIGHT...NE winds 5 to 10 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.

$$

ANZ254-261500-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
1003 PM EDT Wed Sep 25 2024

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

.OVERNIGHT...SE winds around 10 kt. Seas 5 to 7 ft. Wave Detail:
E 7 ft at 12 seconds.
.THU...SE winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas 5 to 7 ft. Wave Detail: E 7 ft at 11 seconds.
.THU NIGHT...S winds 10 to 15 kt, becoming SW after midnight.
Gusts up to 20 kt. Seas 4 to 6 ft. Wave Detail: E 6 ft at
11 seconds and S 2 ft at 4 seconds. A chance of showers in the
evening. Showers likely after midnight. Vsby 1 to 3 NM.
.FRI...W winds 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: E 5 ft at
11 seconds and SW 1 foot at 4 seconds. A chance of showers in the
morning.
.FRI NIGHT...SW winds around 5 kt, becoming N after midnight.
Seas 3 to 4 ft. Wave Detail: E 4 ft at 10 seconds and SW 1 foot
at 4 seconds.
.SAT AND SAT NIGHT...NE winds 5 to 10 kt. Seas 3 to 4 ft. Wave
Detail: E 3 ft at 10 seconds and NE 2 ft at 3 seconds.
.SUN THROUGH MON NIGHT...NE winds 5 to 10 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.

$$

ANZ255-261500-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
1003 PM EDT Wed Sep 25 2024

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

.OVERNIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. Wave Detail: E
5 ft at 11 seconds.
.THU...SE winds 10 to 15 kt. Seas 4 to 6 ft. Wave Detail: E 5 ft
at 11 seconds and SE 1 foot at 2 seconds.
.THU NIGHT...SW winds 10 to 15 kt. Seas 3 to 5 ft. Wave Detail: E
5 ft at 11 seconds and SW 3 ft at 4 seconds. A chance of showers
in the evening, then showers likely after midnight.
.FRI...W winds 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: E 4 ft at
11 seconds and SW 2 ft at 4 seconds. A chance of showers in the
morning.
.FRI NIGHT...S winds around 5 kt, becoming NE after midnight.
Seas 2 to 4 ft. Wave Detail: E 4 ft at 10 seconds and SW 1 foot
at 4 seconds. Patchy fog in the evening.
.SAT AND SAT NIGHT...NE winds 10 to 15 kt. Seas 2 to 4 ft. Wave
Detail: E 3 ft at 10 seconds and S 2 ft at 4 seconds.
.SUN THROUGH MON NIGHT...NE winds 10 to 15 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.

$$

ANZ256-261500-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
1003 PM EDT Wed Sep 25 2024

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

.OVERNIGHT...SE winds around 10 kt. Seas 4 to 5 ft. Wave Detail:
E 5 ft at 10 seconds.
.THU...SE winds 10 to 15 kt. Seas 4 to 5 ft. Wave Detail: E 5 ft
at 12 seconds.
.THU NIGHT...S winds 10 to 15 kt with gusts up to 20 kt, becoming
W after midnight. Seas 3 to 5 ft. Wave Detail: SE 5 ft at
11 seconds and S 2 ft at 4 seconds. A chance of showers in the
evening. Showers likely after midnight.
.FRI...NW winds 5 to 10 kt, becoming W in the afternoon. Seas
2 to 4 ft. Wave Detail: E 4 ft at 11 seconds and SW 2 ft at
4 seconds. A chance of showers in the morning.
.FRI NIGHT THROUGH SAT NIGHT...NE winds 10 to 15 kt. Seas 2 to
4 ft. Wave Detail: E 4 ft at 10 seconds and E 3 ft at 4 seconds.
.SUN THROUGH MON NIGHT...NE winds 10 to 15 kt. Seas 2 to 4 ft.
Wave Detail: E 3 ft at 5 seconds and E 3 ft at 10 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.

$$

ANZ232-261500-
Nantucket Sound-
1003 PM EDT Wed Sep 25 2024

.OVERNIGHT...SE winds around 10 kt. Seas 2 to 4 ft. Wave Detail:
E 3 ft at 11 seconds and E 1 foot at 3 seconds.
.THU...SE winds 10 to 15 kt. Seas 2 to 4 ft. Wave Detail: E 3 ft
at 12 seconds and SE 2 ft at 3 seconds.
.THU NIGHT...S winds 10 to 15 kt with gusts up to 20 kt, becoming
SW after midnight. Seas 2 to 4 ft. Wave Detail: E 3 ft at
11 seconds and S 2 ft at 4 seconds. A chance of showers in the
evening. Showers likely after midnight. Vsby 1 to 3 NM in the
evening.
.FRI...W winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at
11 seconds and SW 1 foot at 4 seconds. A chance of showers in the
morning.
.FRI NIGHT THROUGH SAT NIGHT...NE winds 10 to 15 kt. Seas around
2 ft. Wave Detail: NE 2 ft at 3 seconds and E 2 ft at 10 seconds.
.SUN THROUGH MON NIGHT...NE winds 10 to 15 kt. Seas 2 to 3 ft.
Wave Detail: NE 2 ft at 4 seconds and E 2 ft at 9 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.

$$

ANZ233-261500-
Vineyard Sound-
1003 PM EDT Wed Sep 25 2024

.OVERNIGHT...SE winds around 10 kt. Seas around 2 ft. Wave
Detail: E 2 ft at 11 seconds and E 1 foot at 3 seconds.
.THU...SE winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft
at 3 seconds and SE 2 ft at 11 seconds.
.THU NIGHT...S winds 10 to 15 kt, becoming SW 5 to 10 kt after
midnight. Seas 2 to 3 ft. Wave Detail: S 2 ft at 4 seconds and SE
2 ft at 11 seconds. A chance of showers in the evening. Showers
likely after midnight. Vsby 1 to 3 NM in the evening.
.FRI...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas
around 2 ft. Wave Detail: SE 2 ft at 11 seconds and SW 1 foot at
4 seconds.
.FRI NIGHT THROUGH SAT NIGHT...NE winds 5 to 10 kt. Seas around
2 ft. Wave Detail: SW 1 foot at 4 seconds and SE 1 foot at
10 seconds.
.SUN THROUGH MON NIGHT...NE winds 5 to 10 kt. Seas around 2 ft.
Wave Detail: NE 1 foot at 4 seconds and SE 1 foot at 9 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.

$$

ANZ234-261500-
Buzzards Bay-
1003 PM EDT Wed Sep 25 2024

.OVERNIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
2 ft at 11 seconds and E 1 foot at 2 seconds.
.THU...SE winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas 2 to 3 ft. Wave Detail: S 2 ft at 3 seconds and E 2 ft at
11 seconds. A chance of showers in the afternoon.
.THU NIGHT...S winds 10 to 15 kt with gusts up to 20 kt, becoming
SW 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave Detail: S 2 ft
at 4 seconds and E 2 ft at 11 seconds. Showers likely. Vsby 1 to
3 NM in the evening.
.FRI...W winds 5 to 10 kt, becoming SW in the afternoon. Seas
around 2 ft. Wave Detail: E 2 ft at 11 seconds and SW 1 foot at
4 seconds.
.FRI NIGHT THROUGH SAT NIGHT...NE winds 5 to 10 kt. Seas around
2 ft. Wave Detail: SE 2 ft at 10 seconds and SW 1 foot at
4 seconds.
.SUN THROUGH MON NIGHT...NE winds 5 to 10 kt. Seas around 2 ft.
Wave Detail: NE 1 foot at 4 seconds and E 1 foot at 9 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.

$$

ANZ235-261500-
Rhode Island Sound-
1003 PM EDT Wed Sep 25 2024

.OVERNIGHT...SE winds 10 to 15 kt. Seas around 3 ft. Wave Detail:
SE 3 ft at 11 seconds and E 1 foot at 3 seconds.
.THU...SE winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas 2 to 3 ft. Wave Detail: SE 3 ft at 4 seconds and SE 3 ft at
12 seconds.
.THU NIGHT...S winds 10 to 15 kt with gusts up to 20 kt, becoming
W after midnight. Seas 2 to 3 ft. Wave Detail: S 3 ft at
4 seconds and SE 3 ft at 12 seconds. A chance of showers in the
evening. Showers likely after midnight. Vsby 1 to 3 NM in the
evening.
.FRI...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas
2 to 3 ft. Wave Detail: SE 3 ft at 11 seconds and SW 2 ft at
4 seconds.
.FRI NIGHT THROUGH SAT NIGHT...NE winds 10 to 15 kt. Seas 2 to
3 ft. Wave Detail: E 2 ft at 4 seconds and SE 2 ft at 10 seconds.
.SUN THROUGH MON NIGHT...NE winds around 10 kt. Seas 2 to 3 ft.
Wave Detail: E 2 ft at 5 seconds and SE 1 foot at 9 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.

$$

ANZ237-261500-
Block Island Sound-
1003 PM EDT Wed Sep 25 2024

.OVERNIGHT...SE winds 10 to 15 kt. Seas around 3 ft. Wave Detail:
SE 3 ft at 10 seconds.
.THU...SE winds 10 to 15 kt. Seas around 3 ft. Wave Detail: SE
3 ft at 12 seconds and S 2 ft at 4 seconds. A chance of showers
in the afternoon.
.THU NIGHT...SW winds 10 to 15 kt, becoming W 5 to 10 kt after
midnight. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 11 seconds and
S 2 ft at 4 seconds. A chance of showers in the evening. Showers
likely after midnight.
.FRI...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas
2 to 3 ft. Wave Detail: SE 3 ft at 11 seconds and SW 1 foot at
4 seconds.
.FRI NIGHT...SW winds around 5 kt, becoming NE after midnight.
Seas around 2 ft. Wave Detail: SE 2 ft at 10 seconds and SW
1 foot at 4 seconds.
.SAT AND SAT NIGHT...NE winds 5 to 10 kt. Seas 2 to 3 ft. Wave
Detail: E 2 ft at 4 seconds and SE 2 ft at 10 seconds.
.SUN THROUGH MON NIGHT...NE winds 5 to 10 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.

$$

ANZ230-261500-
Boston Harbor-
1003 PM EDT Wed Sep 25 2024

.OVERNIGHT...SE winds 5 to 10 kt. Waves 1 foot or less, except
2 to 4 ft at the outer harbor entrance.
.THU...SE winds 10 to 15 kt. Waves 2 to 3 ft. A chance of showers
in the morning, then showers likely in the afternoon.
.THU NIGHT...SW winds 5 to 10 kt. Waves 1 foot or less, except
2 to 4 ft at the outer harbor entrance. Showers with a chance of
tstms in the evening, then a chance of showers after midnight.
Vsby 1 to 3 NM in the evening.
.FRI...W winds 5 to 10 kt. Waves 1 foot or less.
.FRI NIGHT...SW winds around 5 kt, becoming N after midnight.
Waves 1 foot or less.
.SAT AND SAT NIGHT...NE winds 5 to 10 kt. Waves 1 foot or less.
.SUN THROUGH MON NIGHT...NE winds 5 to 10 kt. Waves 1 foot or
less.

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.

$$

ANZ236-261500-
Narragansett Bay-
1003 PM EDT Wed Sep 25 2024

.OVERNIGHT...SE winds 5 to 10 kt. Waves 2 to 3 ft.
.THU...SE winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up
to 20 kt in the afternoon. Waves 2 to 3 ft. A chance of showers
in the afternoon.
.THU NIGHT...SW winds around 10 kt, becoming W after midnight.
Waves 2 to 3 ft. A chance of showers in the evening. Showers
likely after midnight. Vsby 1 to 3 NM in the evening.
.FRI...NW winds around 5 kt, becoming SW in the afternoon. Waves
2 to 3 ft.
.FRI NIGHT...SW winds around 5 kt, becoming N after midnight.
Waves around 2 ft in the evening, then 1 foot or less.
.SAT AND SAT NIGHT...NE winds 5 to 10 kt. Waves around 2 ft.
.SUN THROUGH MON NIGHT...NE 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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