Coastal Waters Forecast
Issued by NWS Boston, MA

Current Version | Previous Version | Graphics & Text | Print | Product List | Glossary Off
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 231409
CWFBOX

Coastal Waters Forecast
National Weather Service Boston/Norton MA
1009 AM EDT Sat Jun 23 2018

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

ANZ200-240315-
1009 AM EDT Sat Jun 23 2018

.Synopsis for Massachusetts and Rhode Island coastal waters...
Low pres and an associated warm front will approach today,
bringing showers and isolated thunderstorms that will continue
tonight. Showers will linger on Sunday as a cold front pushes
across Southern New England, reaching the coast early Mon.
Scattered showers could persist into Mon as an upper level
disturbance moves overhead. High pres moves in Mon night and Tue.

For information on possible hazardous weather beyond the 24-36
hour forecast period, please visit www.weather.gov/boston and
follow the Current Hazards link above the map on the left.

$$

ANZ250-240315-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
1009 AM EDT Sat Jun 23 2018

.THIS AFTERNOON...E winds around 10 kt with gusts up to 25 kt.
Seas 2 to 3 ft. Showers likely, then a chance of showers with
isolated tstms with vsby 1 to 3 NM.
.TONIGHT...E winds 5 to 10 kt, becoming NW after midnight. Gusts
up to 20 kt. Seas 2 to 3 ft. Patchy fog. Showers likely. Vsby
1 NM or less.
.SUN...NW winds 5 to 10 kt, becoming S in the afternoon. Seas
2 to 3 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM.
.SUN NIGHT...S winds 5 to 10 kt, becoming NW after midnight. Seas
2 to 3 ft. Patchy fog. A chance of showers. Vsby 1 NM or less.
.MON...N winds 5 to 10 kt, increasing to 10 to 15 kt in the
afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. Patchy fog. A
chance of showers. Vsby 1 to 3 NM.
.MON NIGHT...NE winds 10 to 15 kt, becoming NW 5 to 10 kt after
midnight. Gusts up to 20 kt. Seas 3 to 5 ft.
.TUE...SW winds 5 to 10 kt. Seas 3 to 5 ft.
.TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 5 ft.
.WED...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
5 ft.
.WED NIGHT...S winds 20 to 25 kt. Seas 4 to 6 ft.

Winds and seas 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.

$$

ANZ251-240315-
Massachusetts Bay and Ipswich Bay-
1009 AM EDT Sat Jun 23 2018

.THIS AFTERNOON...E winds 5 to 10 kt with gusts up to 20 kt. Seas
around 2 ft. A chance of showers. Isolated tstms with vsby 1 to
3 NM.
.TONIGHT...NE winds 5 to 10 kt with gusts up to 20 kt, becoming N
after midnight. Seas around 2 ft. Patchy fog. Showers likely.
Vsby 1 to 3 NM.
.SUN...NW winds around 5 kt, becoming SE in the afternoon. Seas
around 2 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM.
.SUN NIGHT...SE winds 5 to 10 kt, becoming NW after midnight.
Seas 2 to 3 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM.
.MON...N winds 5 to 10 kt, increasing to 10 to 15 kt in the
afternoon. Gusts up to 20 kt. Seas 2 to 3 ft. Patchy fog. A
chance of showers.
.MON NIGHT...NE winds 5 to 10 kt with gusts up to 20 kt, becoming
NW after midnight. Seas 2 to 4 ft.
.TUE...SW winds 5 to 10 kt. Seas 2 to 3 ft.
.TUE NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft.
.WED...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft.
.WED NIGHT...S winds 15 to 20 kt. Seas 2 to 4 ft. A chance of
showers.

Winds and seas 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.

$$

ANZ231-240315-
Cape Cod Bay-
1009 AM EDT Sat Jun 23 2018

.THIS AFTERNOON...E winds 5 to 10 kt with gusts up to 25 kt. Seas
around 2 ft. Showers, then a chance of showers with a slight
chance of tstms. Patchy fog. Vsby 1 to 3 NM.
.TONIGHT...SE winds 5 to 10 kt, becoming W after midnight. Seas
1 foot or less. Patchy fog. Showers likely. Vsby 1 to 3 NM.
.SUN...NW winds around 5 kt, becoming S in the afternoon. Seas
1 foot or less. Patchy fog. Vsby 1 to 3 NM.
.SUN NIGHT...SW winds 5 to 10 kt, becoming NW after midnight.
Seas around 2 ft. Patchy fog. A chance of showers. Vsby 1 NM or
less.
.MON...N winds 5 to 10 kt, increasing to 10 to 15 kt in the
afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. Patchy fog. Vsby
1 to 3 NM.
.MON NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt,
becoming N 5 to 10 kt after midnight. Seas 2 to 3 ft.
.TUE...SW winds 5 to 10 kt. Seas 2 to 3 ft.
.TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft.
.WED...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
4 ft.
.WED NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas
2 to 4 ft.

Winds and seas 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.

$$

ANZ254-240315-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
1009 AM EDT Sat Jun 23 2018

...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH
SUNDAY AFTERNOON...

.THIS AFTERNOON...E winds around 10 kt with gusts up to 25 kt.
Seas 2 to 4 ft. Showers with a slight chance of tstms. Patchy
fog. Vsby 1 NM or less.
.TONIGHT...S winds 10 to 15 kt, becoming SW after midnight. Gusts
up to 20 kt. Seas 2 to 4 ft. Patchy fog. Showers likely. Vsby
1 NM or less.
.SUN...W winds 5 to 10 kt, becoming SW in the afternoon. Seas
2 to 4 ft. Patchy fog. Vsby 1 NM or less.
.SUN NIGHT...SW winds 5 to 10 kt, becoming W after midnight. Seas
2 to 4 ft. Patchy fog. A chance of showers. Vsby 1 NM or less.
.MON...NW winds 5 to 10 kt, becoming N 10 to 15 kt in the
afternoon. Gusts up to 25 kt. Seas 3 to 5 ft. Patchy fog. Vsby
1 to 3 NM.
.MON NIGHT...N winds 10 to 15 kt, diminishing to 5 to 10 kt after
midnight. Gusts up to 25 kt. Seas 4 to 6 ft.
.TUE...W winds 5 to 10 kt with gusts up to 20 kt. Seas 3 to 5 ft.
.TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 5 ft.
.WED...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
5 ft.
.WED NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas
4 to 7 ft.

Winds and seas 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.

$$

ANZ255-240315-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
1009 AM EDT Sat Jun 23 2018

...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH
SUNDAY AFTERNOON...

.THIS AFTERNOON...E winds 10 to 15 kt with gusts up to 25 kt.
Seas 2 to 4 ft. A slight chance of tstms. Showers. Vsby 1 NM or
less.
.TONIGHT...S winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to
5 ft. Patchy fog. Showers likely. Vsby 1 NM or less.
.SUN...SW winds 5 to 10 kt. Seas 3 to 5 ft. Patchy fog. A chance
of showers. Vsby 1 NM or less.
.SUN NIGHT...W winds 5 to 10 kt with gusts up to 20 kt. Seas 3 to
5 ft. Patchy fog. Vsby 1 to 3 NM.
.MON...NW winds 5 to 10 kt, becoming N 10 to 15 kt with gusts up
to 25 kt in the afternoon. Seas 3 to 5 ft. Patchy fog. Vsby 1 to
3 NM.
.MON NIGHT...NE winds 10 to 15 kt, becoming N 5 to 10 kt after
midnight. Gusts up to 25 kt. Seas 3 to 5 ft.
.TUE...W winds 5 to 10 kt with gusts up to 20 kt. Seas 3 to 5 ft.
.TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 4 ft.
.WED...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
5 ft.
.WED NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas
5 to 8 ft.

Winds and seas 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.

$$

ANZ256-240315-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
1009 AM EDT Sat Jun 23 2018

...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH
SUNDAY AFTERNOON...

.THIS AFTERNOON...E winds 10 to 15 kt with gusts up to 25 kt.
Seas around 4 ft. A slight chance of tstms. Showers, then showers
likely. Patchy fog. Vsby 1 NM or less, increasing to 1 to 3 NM.
.TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
5 ft. Patchy fog. Showers likely. Vsby 1 NM or less.
.SUN...SW winds 5 to 10 kt. Gusts up to 20 kt in the afternoon.
Seas 3 to 5 ft. Patchy fog. Vsby 1 NM or less.
.SUN NIGHT...SW winds 10 to 15 kt, becoming W 5 to 10 kt after
midnight. Gusts up to 20 kt. Seas 3 to 5 ft. Patchy fog. Vsby
1 to 3 NM.
.MON...NW winds 5 to 10 kt, becoming N 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas around 4 ft.
.MON NIGHT...NE winds 10 to 15 kt, diminishing to 5 to 10 kt
after midnight. Gusts up to 20 kt. Seas around 4 ft.
.TUE...W winds 5 to 10 kt. Seas 3 to 4 ft.
.TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 4 ft.
.WED...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to
6 ft.
.WED NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas
6 to 9 ft. A chance of showers.

Winds and seas 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.

$$

ANZ232-240315-
Nantucket Sound-
1009 AM EDT Sat Jun 23 2018

.THIS AFTERNOON...E winds 10 to 15 kt with gusts up to 25 kt.
Seas around 2 ft. Showers with a slight chance of tstms. Patchy
fog. Vsby 1 to 3 NM.
.TONIGHT...S winds 5 to 10 kt, becoming SW after midnight. Gusts
up to 20 kt. Seas 2 to 3 ft. Patchy fog. Showers likely. Vsby
1 NM or less.
.SUN...SW winds 5 to 10 kt. Seas 2 to 3 ft. Patchy fog. A chance
of showers. Vsby 1 NM or less.
.SUN NIGHT...SW winds 5 to 10 kt, becoming W after midnight. Seas
2 to 3 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM.
.MON...NW winds 5 to 10 kt, becoming N 10 to 15 kt in the
afternoon. Gusts up to 25 kt. Seas 2 to 3 ft. Patchy fog. Vsby
1 to 3 NM.
.MON NIGHT...NE winds 10 to 15 kt, becoming N 5 to 10 kt after
midnight. Gusts up to 20 kt. Seas 2 to 3 ft.
.TUE...W winds 5 to 10 kt. Seas 2 to 3 ft.
.TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft.
.WED...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
4 ft.
.WED NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas
3 to 5 ft.

Winds and seas 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.

$$

ANZ233-240315-
Vineyard Sound-
1009 AM EDT Sat Jun 23 2018

.THIS AFTERNOON...E winds 10 to 15 kt with gusts up to 25 kt.
Seas 2 to 3 ft. Showers with a slight chance of tstms. Patchy
fog. Vsby 1 to 3 NM.
.TONIGHT...SE winds 5 to 10 kt, becoming SW with gusts up to
20 kt after midnight. Seas 2 to 3 ft. Patchy fog. Showers likely.
Vsby 1 NM or less.
.SUN...SW winds 5 to 10 kt. Gusts up to 20 kt in the afternoon.
Seas 2 to 3 ft. Patchy fog. Vsby 1 NM or less.
.SUN NIGHT...SW winds 5 to 10 kt with gusts up to 20 kt, becoming
W after midnight. Seas 2 to 3 ft. Patchy fog. Vsby 1 to 3 NM.
.MON...NW winds 5 to 10 kt, becoming N 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas 2 to 3 ft.
.MON NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt,
becoming N 5 to 10 kt after midnight. Seas 2 to 3 ft.
.TUE...W winds 5 to 10 kt. Seas 2 to 3 ft.
.TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft.
.WED...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
4 ft.
.WED NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas
3 to 5 ft. A chance of showers.

Winds and seas 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.

$$

ANZ234-240315-
Buzzards Bay-
1009 AM EDT Sat Jun 23 2018

.THIS AFTERNOON...E winds 5 to 10 kt with gusts up to 20 kt. Seas
around 2 ft. A slight chance of tstms. Showers, then a chance of
showers. Patchy fog. Vsby 1 to 3 NM.
.TONIGHT...SE winds 5 to 10 kt, becoming SW after midnight. Seas
around 2 ft. Patchy fog. Showers likely. Vsby 1 NM or less.
.SUN...SW winds 5 to 10 kt. Gusts up to 20 kt in the afternoon.
Seas 2 to 3 ft. Patchy fog. Vsby 1 NM or less.
.SUN NIGHT...SW winds 5 to 10 kt, becoming NW after midnight.
Seas 2 to 3 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM.
.MON...NW winds 5 to 10 kt, becoming N 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas 2 to 3 ft.
.MON NIGHT...N winds 5 to 10 kt. Gusts up to 20 kt in the
evening. Seas 2 to 3 ft.
.TUE...W winds 5 to 10 kt. Seas 2 to 3 ft.
.TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft.
.WED...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
4 ft.
.WED NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas
2 to 4 ft. A chance of showers.

Winds and seas 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.

$$

ANZ235-240315-
Rhode Island Sound-
1009 AM EDT Sat Jun 23 2018

.THIS AFTERNOON...E winds 10 to 15 kt with gusts up to 25 kt.
Seas 2 to 4 ft. A slight chance of tstms. Showers, then a chance
of showers. Patchy fog. Vsby 1 NM or less, increasing to 1 to
3 NM.
.TONIGHT...SE winds 5 to 10 kt, becoming SW 10 to 15 kt after
midnight. Gusts up to 20 kt. Seas 2 to 4 ft. Patchy fog. A chance
of showers. Vsby 1 NM or less.
.SUN...SW winds 5 to 10 kt. Gusts up to 20 kt in the afternoon.
Seas 2 to 4 ft. Patchy fog. Vsby 1 NM or less.
.SUN NIGHT...SW winds 5 to 10 kt with gusts up to 20 kt, becoming
NW after midnight. Seas 2 to 4 ft. Patchy fog. A chance of
showers. Vsby 1 to 3 NM.
.MON...NW winds 5 to 10 kt, becoming N 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas 3 to 4 ft.
.MON NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt,
becoming N 5 to 10 kt after midnight. Seas 2 to 4 ft.
.TUE...W winds 5 to 10 kt. Seas around 3 ft.
.TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 4 ft.
.WED...SW winds 15 to 20 kt. Seas 3 to 5 ft.
.WED NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas
4 to 7 ft. A chance of showers.

Winds and seas 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.

$$

ANZ237-240315-
Block Island Sound-
1009 AM EDT Sat Jun 23 2018

.THIS AFTERNOON...E winds 10 to 15 kt, diminishing to 5 to 10 kt.
Gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers with
isolated tstms. Patchy fog. Vsby 1 to 3 NM.
.TONIGHT...E winds 5 to 10 kt with gusts up to 20 kt, becoming SW
after midnight. Seas 2 to 4 ft. Patchy fog. Showers likely. Vsby
1 NM or less.
.SUN...SW winds 5 to 10 kt. Seas 2 to 4 ft. Patchy fog. Vsby 1 NM
or less.
.SUN NIGHT...SW winds 5 to 10 kt, becoming NW after midnight.
Seas 2 to 4 ft. Patchy fog. A chance of showers.
.MON...N winds 5 to 10 kt. Seas 2 to 4 ft.
.MON NIGHT...NE winds 5 to 10 kt. Gusts up to 20 kt in the
evening. Seas 2 to 4 ft.
.TUE...W winds 5 to 10 kt. Seas 2 to 3 ft.
.TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 4 ft.
.WED...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
5 ft.
.WED NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas
4 to 6 ft. A chance of showers.

Winds and seas 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.

$$

ANZ230-240315-
Boston Harbor-
1009 AM EDT Sat Jun 23 2018

.THIS AFTERNOON...E winds 5 to 10 kt. Gusts up to 20 kt. Waves
1 foot or less. A chance of showers. Isolated tstms.
.TONIGHT...N winds 5 to 10 kt. Waves 1 foot or less. Patchy fog.
Showers likely. Vsby 1 to 3 NM.
.SUN...W winds around 5 kt, becoming SE around 5 kt in the
afternoon. Waves 1 foot or less. Patchy fog. A chance of showers.
Vsby 1 to 3 NM.
.SUN NIGHT...E winds around 5 kt, becoming NW after midnight.
Waves 1 foot or less. Patchy fog. A chance of showers. Vsby 1 to
3 NM.
.MON...N winds 5 to 10 kt with gusts up to 20 kt. Waves around
2 ft. A chance of showers.
.MON NIGHT...NE winds 5 to 10 kt, becoming NW after midnight.
Waves around 2 ft.
.TUE...W winds around 5 kt. Waves 1 foot or less.
.TUE NIGHT...SW winds 5 to 10 kt. Waves 1 foot or less.
.WED...SW winds 5 to 10 kt with gusts up to 20 kt. Waves around
2 ft.
.WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Waves
around 2 ft. A chance of showers.

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.

$$

ANZ236-240315-
Narragansett Bay-
1009 AM EDT Sat Jun 23 2018

.THIS AFTERNOON...E winds 5 to 10 kt with gusts up to 20 kt.
Waves around 2 ft. A chance of showers with isolated tstms.
.TONIGHT...E winds 5 to 10 kt, becoming NW after midnight. Waves
around 2 ft. Patchy fog. Showers likely. Vsby 1 NM or less.
.SUN...W winds around 5 kt, becoming SW in the afternoon. Waves
2 to 3 ft. Patchy fog. Vsby 1 to 3 NM.
.SUN NIGHT...SW winds 5 to 10 kt, becoming NW after midnight.
Waves 2 to 3 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM.
.MON...N winds 5 to 10 kt. Waves 2 to 3 ft.
.MON NIGHT...N winds 5 to 10 kt. Waves 2 to 3 ft.
.TUE...W winds 5 to 10 kt. Waves 2 to 3 ft.
.TUE NIGHT...SW winds 5 to 10 kt. Waves 2 to 3 ft.
.WED...SW winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to
3 ft.
.WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Waves
2 to 4 ft. A chance of showers.

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.

$$

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

You can follow us on Facebook at
www.facebook.com/NWSBoston

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.