Coastal Waters Forecast
Issued by NWS Boston, MA

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
000
FZUS51 KBOX 261416
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
1016 AM EDT Sat Sep 26 2020

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

ANZ200-270300-
1016 AM EDT Sat Sep 26 2020

.Synopsis for Massachusetts and Rhode Island coastal waters...
High pressure will be centered south of the waters today with light
winds and tranquil waters through tomorrow. Small Craft Advisories
may be needed beginning Monday. Southerly wind will prevail through
mid week. Stronger wind gusts will be possible Tuesday and Wednesday
ahead of a cold front.

For additional information on possible hazardous weather for the
week ahead, please visit www.weather.gov/boston/ehwo .

$$

ANZ250-270300-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
1016 AM EDT Sat Sep 26 2020

.THIS AFTERNOON...S winds 5 to 10 kt, increasing to 10 to 15 kt.
Seas 2 to 3 ft. Patchy fog. Vsby 1 to 3 NM.
.TONIGHT...S winds 10 to 15 kt. Gusts up to 20 kt in the evening.
Seas 2 to 3 ft. Patchy fog. Vsby 1 NM or less.
.SUN...S winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas 2 to 3 ft. Patchy fog. Vsby 1 NM or less.
.SUN NIGHT...S winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 2 to 4 ft. A chance of showers.
.MON AND MON NIGHT...S winds 10 to 15 kt. Seas 2 to 4 ft. A
chance of showers.
.TUE...S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
5 ft. A chance of showers.
.TUE NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas
4 to 6 ft. Showers likely.
.WED...S winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to
8 ft. A chance of showers.
.WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
4 to 7 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.

$$

ANZ251-270300-
Massachusetts Bay and Ipswich Bay-
1016 AM EDT Sat Sep 26 2020

.THIS AFTERNOON...S winds 5 to 10 kt, increasing to 10 to 15 kt.
Seas around 2 ft.
.TONIGHT...S winds 10 to 15 kt, diminishing to 5 to 10 kt after
midnight. Seas 2 to 3 ft. Patchy fog. Vsby 1 to 3 NM.
.SUN...S winds 5 to 10 kt, increasing to 10 to 15 kt in the
afternoon. Seas 2 to 3 ft. Patchy fog. Vsby 1 NM or less.
.SUN NIGHT...S winds 10 to 15 kt. Seas 2 to 3 ft. A chance of
showers.
.MON AND MON NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. A chance
of showers.
.TUE...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. A chance of showers.
.TUE NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 4 ft. Showers likely.
.WED...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
5 ft. A chance of showers.
.WED NIGHT...SW winds 5 to 10 kt. Seas 2 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.

$$

ANZ231-270300-
Cape Cod Bay-
1016 AM EDT Sat Sep 26 2020

.THIS AFTERNOON...S winds around 5 kt, increasing to around
10 kt. Seas 1 foot or less.
.TONIGHT...S winds 5 to 10 kt. Seas 1 foot or less. Patchy fog.
Vsby 1 NM or less.
.SUN...S winds 5 to 10 kt. Seas around 2 ft. Patchy fog. Vsby
1 NM or less.
.SUN NIGHT...S winds 10 to 15 kt. Seas around 2 ft. A chance of
showers.
.MON AND MON NIGHT...S winds 10 to 15 kt. Seas around 2 ft. A
chance of showers.
.TUE...S winds 10 to 15 kt. Seas around 2 ft. A chance of
showers.
.TUE NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 4 ft. Showers likely.
.WED AND WED NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt.
Seas 2 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.

$$

ANZ254-270300-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
1016 AM EDT Sat Sep 26 2020

.THIS AFTERNOON...S winds 5 to 10 kt. Seas 2 to 3 ft. Patchy fog.
Vsby 1 NM or less.
.TONIGHT...S winds around 10 kt. Seas 2 to 3 ft. Patchy fog. Vsby
1 NM or less.
.SUN...S winds 10 to 15 kt. Seas 2 to 3 ft. Patchy fog. Vsby 1 NM
or less.
.SUN NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 4 ft. A chance of showers.
.MON AND MON NIGHT...S winds 10 to 15 kt with gusts up to 20 kt.
Seas 3 to 5 ft. A chance of showers.
.TUE...S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
5 ft. A chance of showers.
.TUE NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas
4 to 7 ft. Showers likely.
.WED AND WED NIGHT...S winds 15 to 20 kt, becoming SW 10 to
15 kt. Gusts up to 25 kt. Seas 5 to 8 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.

$$

ANZ255-270300-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
1016 AM EDT Sat Sep 26 2020

.THIS AFTERNOON...S winds 5 to 10 kt. Seas 2 to 3 ft. Patchy fog.
Vsby 1 NM or less.
.TONIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Patchy fog. Vsby
1 NM or less.
.SUN...S winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas 2 to 4 ft. Patchy fog. Vsby 1 NM or less.
.SUN NIGHT...S winds 10 to 15 kt. Seas 3 to 5 ft. A chance of
showers.
.MON AND MON NIGHT...S winds 10 to 15 kt with gusts up to 20 kt.
Seas 4 to 5 ft. A chance of showers.
.TUE...S winds 10 to 15 kt. Seas 4 to 5 ft. A chance of showers.
.TUE NIGHT...S winds around 15 kt with gusts up to 20 kt. Seas
4 to 7 ft. Showers likely.
.WED...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 6 to
9 ft. Showers likely.
.WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
5 to 8 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.

$$

ANZ256-270300-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
1016 AM EDT Sat Sep 26 2020

.THIS AFTERNOON...S winds 5 to 10 kt. Seas 2 to 3 ft.
.TONIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Patchy fog. Vsby
1 NM or less.
.SUN...SE winds 5 to 10 kt, becoming S 10 to 15 kt in the
afternoon. Seas 2 to 4 ft. Patchy fog. Vsby 1 NM or less.
.SUN NIGHT...S winds 10 to 15 kt. Seas 4 to 5 ft. A chance of
showers.
.MON AND MON NIGHT...S winds 10 to 15 kt. Seas 4 to 5 ft. A
chance of showers.
.TUE...S winds 10 to 15 kt. Seas 4 to 5 ft. A chance of showers.
.TUE NIGHT AND WED...S winds 10 to 15 kt, becoming SW 15 to
20 kt. Gusts up to 25 kt. Seas 5 to 8 ft. Showers likely.
.WED NIGHT...SW winds 10 to 15 kt. Seas 6 to 8 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.

$$

ANZ232-270300-
Nantucket Sound-
1016 AM EDT Sat Sep 26 2020

.THIS AFTERNOON...S winds 5 to 10 kt. Seas 1 foot or less. Patchy
fog. Vsby 1 NM or less.
.TONIGHT...S winds 5 to 10 kt. Seas around 2 ft. Patchy fog. Vsby
1 NM or less.
.SUN...S winds 5 to 10 kt, increasing to 10 to 15 kt in the
afternoon. Seas around 2 ft. Patchy fog. Vsby 1 NM or less.
.SUN NIGHT...S winds 10 to 15 kt. Seas 2 to 3 ft. A chance of
showers.
.MON AND MON NIGHT...S winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. A chance of showers.
.TUE...S winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers.
.TUE NIGHT AND WED...S winds 10 to 15 kt, becoming SW 15 to
20 kt. Gusts up to 25 kt. Seas 3 to 5 ft. Showers likely.
.WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
2 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.

$$

ANZ233-270300-
Vineyard Sound-
1016 AM EDT Sat Sep 26 2020

.THIS AFTERNOON...S winds 5 to 10 kt. Seas 1 foot or less.
.TONIGHT...S winds 5 to 10 kt. Seas around 2 ft. Patchy fog. Vsby
1 NM or less.
.SUN...S winds 5 to 10 kt. Seas 2 to 3 ft. Patchy fog. Vsby 1 NM
or less.
.SUN NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. A chance of
showers.
.MON AND MON NIGHT...S winds 10 to 15 kt. Seas 2 to 3 ft. A
chance of showers.
.TUE...S winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers.
.TUE NIGHT AND WED...S winds 10 to 15 kt with gusts up to 20 kt.
Seas 4 to 6 ft. Showers likely.
.WED NIGHT...SW 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.

$$

ANZ234-270300-
Buzzards Bay-
1016 AM EDT Sat Sep 26 2020

.THIS AFTERNOON...S winds 5 to 10 kt. Seas 1 foot or less.
.TONIGHT...S winds 5 to 10 kt. Seas 1 foot or less. Patchy fog.
Vsby 1 NM or less.
.SUN...S winds 5 to 10 kt. Seas around 2 ft. Patchy fog. Vsby
1 NM or less.
.SUN NIGHT...S winds 5 to 10 kt. Seas around 2 ft. A chance of
showers.
.MON AND MON NIGHT...S winds 5 to 10 kt. Seas around 2 ft. A
chance of showers.
.TUE...S winds 5 to 10 kt. Seas around 2 ft. A chance of showers.
.TUE NIGHT AND WED...S winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 4 ft. Showers likely.
.WED NIGHT...SW winds 10 to 15 kt. Seas 2 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.

$$

ANZ235-270300-
Rhode Island Sound-
1016 AM EDT Sat Sep 26 2020

.THIS AFTERNOON...S winds 5 to 10 kt. Seas around 2 ft.
.TONIGHT...S winds 5 to 10 kt. Seas around 2 ft. Patchy fog. Vsby
1 NM or less.
.SUN...S winds 5 to 10 kt. Seas 2 to 3 ft. Patchy fog. Vsby 1 NM
or less.
.SUN NIGHT...S winds 10 to 15 kt. Seas 2 to 4 ft. A chance of
showers.
.MON AND MON NIGHT...S winds 10 to 15 kt. Seas 3 to 4 ft. A
chance of showers.
.TUE...S winds 10 to 15 kt. Seas 3 to 4 ft. A chance of showers.
.TUE NIGHT AND WED...S winds 10 to 15 kt with gusts up to 25 kt.
Seas 4 to 7 ft. Showers likely.
.WED NIGHT...SW winds 10 to 15 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.

$$

ANZ237-270300-
Block Island Sound-
1016 AM EDT Sat Sep 26 2020

.THIS AFTERNOON...S winds 5 to 10 kt. Seas around 2 ft.
.TONIGHT...S winds 5 to 10 kt. Seas around 2 ft. Patchy fog. Vsby
1 NM or less.
.SUN...S winds 5 to 10 kt. Seas 2 to 3 ft. Patchy fog. Vsby 1 NM
or less.
.SUN NIGHT...S winds 5 to 10 kt. Seas 2 to 4 ft. A chance of
showers.
.MON AND MON NIGHT...S winds 5 to 10 kt. Seas 3 to 4 ft. A chance
of showers.
.TUE...S winds 10 to 15 kt. Seas 3 to 4 ft. A chance of showers.
.TUE NIGHT AND WED...SW winds 10 to 15 kt with gusts up to 20 kt.
Seas 4 to 7 ft. Showers likely.
.WED NIGHT...SW winds 5 to 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.

$$

ANZ230-270300-
Boston Harbor-
1016 AM EDT Sat Sep 26 2020

.THIS AFTERNOON...S winds 5 to 10 kt. Waves 1 foot or less.
.TONIGHT...S winds 5 to 10 kt. Waves 1 foot or less. Patchy fog.
Vsby 1 to 3 NM.
.SUN...S winds 5 to 10 kt. Waves around 2 ft. Patchy fog. Vsby
1 to 3 NM.
.SUN NIGHT...S winds 5 to 10 kt. Waves 1 foot or less. A chance
of showers.
.MON AND MON NIGHT...S winds 5 to 10 kt. Waves 1 foot or less. A
chance of showers.
.TUE...S winds 5 to 10 kt. Waves around 2 ft. A chance of
showers.
.TUE NIGHT...S winds 10 to 15 kt. Waves around 2 ft. Showers
likely.
.WED AND WED NIGHT...SW winds 10 to 15 kt, becoming W 5 to 10 kt.
Waves around 2 ft, then 1 foot or less. 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.

$$

ANZ236-270300-
Narragansett Bay-
1016 AM EDT Sat Sep 26 2020

.THIS AFTERNOON...S winds 5 to 10 kt. Waves around 2 ft.
.TONIGHT...S winds 5 to 10 kt. Waves around 2 ft. Patchy fog.
Vsby 1 NM or less.
.SUN...S winds 5 to 10 kt. Waves around 2 ft. Patchy fog. Vsby
1 NM or less.
.SUN NIGHT...S winds 5 to 10 kt. Waves 2 to 3 ft. A chance of
showers.
.MON AND MON NIGHT...S winds 5 to 10 kt. Waves 2 to 3 ft. A
chance of showers.
.TUE...S winds 5 to 10 kt. Waves 2 to 3 ft. A chance of showers.
.TUE NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Waves
2 to 4 ft. Showers likely.
.WED...SW winds 10 to 15 kt with gusts up to 20 kt. Waves 3 to
5 ft. Showers likely.
.WED NIGHT...SW winds 5 to 10 kt. Waves 2 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.

$$

For the latest updates...please visit our webpage at
www.weather.gov/boston

You can follow us on Facebook at
www.facebook.com/us.nationalweatherservice.boston.gov

You can follow us on Twitter at
@NWSBoston



USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.