FZUS51 KBOX 162303
CWFBOX
Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
703 PM EDT Sat May 16 2026
Coastal waters from the Merrimack River MA to Watch Hill RI out
to 60 NM
ANZ200-171200-
703 PM EDT Sat May 16 2026
.Synopsis for Massachusetts and Rhode Island coastal waters...
After a period of Small Craft Advisory conditions through Sunday
afternoon, a Bermuda high develops into early next week, providing
tranquil boating weather across the MA and RI waters. Next trough of
low pressure may arrive around Wednesday.
$$
ANZ250-171200-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
703 PM EDT Sat May 16 2026
...SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY AFTERNOON...
.TONIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to
5 ft. Wave Detail: S 4 ft at 5 seconds and E 4 ft at 9 seconds. A
slight chance of showers after midnight.
.SUN...SW winds 10 to 15 kt. Gusts up to 20 kt in the morning.
Seas 2 to 4 ft. Wave Detail: SW 3 ft at 5 seconds and SE 3 ft at
9 seconds.
.SUN NIGHT...NW winds 5 to 10 kt, becoming NE after midnight.
Seas 2 to 3 ft. Wave Detail: SE 2 ft at 8 seconds and W 1 foot at
3 seconds.
.MON...E winds around 5 kt, becoming SE 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: S 2 ft
at 3 seconds and SE 2 ft at 7 seconds.
.MON NIGHT THROUGH TUE NIGHT...SW winds 15 to 20 kt with gusts up
to 25 kt. Seas 2 to 4 ft. Wave Detail: SW 4 ft at 4 seconds and
SE 2 ft at 8 seconds.
.WED AND WED NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt.
Seas 2 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and SE 2 ft at
9 seconds. A chance of showers.
.THU AND THU NIGHT...N winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt. Seas 2 to 3 ft.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
ANZ251-171200-
Massachusetts Bay and Ipswich Bay-
703 PM EDT Sat May 16 2026
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT SUNDAY...
.TONIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
4 ft. Wave Detail: S 3 ft at 4 seconds and E 3 ft at 10 seconds.
A slight chance of showers after midnight.
.SUN...SW winds 10 to 15 kt, becoming W 5 to 10 kt in the
afternoon. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and
E 2 ft at 9 seconds.
.SUN NIGHT...NW winds 5 to 10 kt, becoming NE after midnight.
Seas around 2 ft. Wave Detail: W 1 foot at 3 seconds and E 1 foot
at 9 seconds.
.MON...E winds around 5 kt, becoming SE 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas 1 foot or less, then around 2 ft
in the afternoon. Wave Detail: W 1 foot at 3 seconds and NE
1 foot at 6 seconds, becoming SE 2 ft at 3 seconds and E 1 foot
at 6 seconds.
.MON NIGHT THROUGH TUE NIGHT...SW winds 15 to 20 kt. Seas 2 to
3 ft. Wave Detail: SW 3 ft at 4 seconds and E 1 foot at
7 seconds.
.WED AND WED NIGHT...W winds 10 to 15 kt with gusts up to 25 kt.
Seas 2 to 3 ft. Wave Detail: SW 2 ft at 3 seconds and SE 1 foot
at 9 seconds. A chance of showers.
.THU AND THU NIGHT...N winds 5 to 10 kt. Seas 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.
$$
ANZ231-171200-
Cape Cod Bay-
703 PM EDT Sat May 16 2026
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING...
.TONIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
4 ft. Wave Detail: SW 3 ft at 3 seconds and E 1 foot at
8 seconds. A chance of showers after midnight.
.SUN...SW winds 10 to 15 kt with gusts up to 20 kt, diminishing
to 5 to 10 kt in the afternoon. Seas around 2 ft. Wave Detail: SW
2 ft at 3 seconds and E 1 foot at 9 seconds.
.SUN NIGHT...W winds 5 to 10 kt, becoming NE after midnight. Seas
around 2 ft in the evening, then 1 foot or less. Wave Detail: W
1 foot at 2 seconds and SE 1 foot at 9 seconds, becoming NW
1 foot at 3 seconds and E 1 foot at 8 seconds.
.MON...E winds 5 to 10 kt. Seas 1 foot or less, then around 2 ft
in the afternoon. Wave Detail: NW 1 foot at 3 seconds and NE
1 foot at 3 seconds, becoming E 1 foot at 3 seconds.
.MON NIGHT...S winds around 10 kt. Seas around 2 ft. Wave Detail:
S 1 foot at 2 seconds and NE 1 foot at 4 seconds.
.TUE AND TUE NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt.
Seas 2 to 4 ft. Wave Detail: SW 2 ft at 3 seconds and E 1 foot at
5 seconds.
.WED...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
4 ft. A chance of showers.
.WED NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas
2 to 4 ft. A chance of showers.
.THU...N winds 5 to 10 kt. Seas around 2 ft. A chance of showers.
.THU NIGHT...NE winds 5 to 10 kt. Seas around 2 ft.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
ANZ254-171200-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 NM-
703 PM EDT Sat May 16 2026
...SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY AFTERNOON...
.TONIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to
6 ft. Wave Detail: SW 5 ft at 6 seconds and E 4 ft at 9 seconds.
.SUN...SW winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: SW
5 ft at 6 seconds and SE 3 ft at 9 seconds.
.SUN NIGHT...W winds 10 to 15 kt, becoming N 5 to 10 kt after
midnight. Seas 2 to 4 ft. Wave Detail: W 3 ft at 4 seconds and SE
3 ft at 8 seconds.
.MON...E winds 5 to 10 kt, becoming SE in the afternoon. Seas
2 to 3 ft. Wave Detail: NE 3 ft at 7 seconds and W 2 ft at
4 seconds.
.MON NIGHT...S winds 10 to 15 kt. Gusts up to 20 kt after
midnight. Seas 2 to 3 ft. Wave Detail: S 2 ft at 4 seconds and SE
2 ft at 7 seconds.
.TUE AND TUE NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt.
Seas 3 to 5 ft. Wave Detail: SW 5 ft at 6 seconds and SE 2 ft at
9 seconds.
.WED...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
5 ft.
.WED NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas
3 to 5 ft. A chance of showers.
.THU...N winds 10 to 15 kt. Seas 2 to 4 ft. A chance of showers.
.THU NIGHT...NE winds 5 to 10 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.
$$
ANZ255-171200-
Coastal Waters extending out to 25 NM South of Marthas Vineyard
and Nantucket-
703 PM EDT Sat May 16 2026
...SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY AFTERNOON...
.TONIGHT...SW winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to
6 ft. Wave Detail: SW 6 ft at 6 seconds and SE 4 ft at 9 seconds.
.SUN...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to
6 ft. Wave Detail: SW 6 ft at 7 seconds and SE 3 ft at 9 seconds.
.SUN NIGHT...W winds 10 to 15 kt, becoming N 5 to 10 kt after
midnight. Seas 3 to 4 ft. Wave Detail: SW 4 ft at 7 seconds and S
3 ft at 8 seconds.
.MON...E winds around 10 kt, becoming SE in the afternoon. Seas
2 to 4 ft. Wave Detail: SW 3 ft at 7 seconds and SE 2 ft at
10 seconds.
.MON NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S
2 ft at 7 seconds.
.TUE...SW winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. Gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: SW
5 ft at 5 seconds and SE 2 ft at 9 seconds.
.TUE NIGHT...SW winds around 20 kt with gusts up to 25 kt. Seas
4 to 6 ft.
.WED...SW winds around 20 kt with gusts up to 25 kt. Seas 4 to
6 ft.
.WED NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas
4 to 6 ft. A chance of showers.
.THU AND THU NIGHT...N winds 10 to 15 kt, becoming NE 5 to 10 kt.
Seas 3 to 5 ft. A chance of showers.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
ANZ256-171200-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 NM South of Block Island-
703 PM EDT Sat May 16 2026
...SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY AFTERNOON...
.TONIGHT...SW winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to
6 ft. Wave Detail: SW 6 ft at 7 seconds and SE 4 ft at 9 seconds.
.SUN...SW winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: SW
6 ft at 7 seconds and SE 3 ft at 9 seconds.
.SUN NIGHT...SW winds 10 to 15 kt, becoming N 5 to 10 kt after
midnight. Seas 3 to 4 ft. Wave Detail: SW 4 ft at 7 seconds and
SE 2 ft at 8 seconds.
.MON...E winds around 10 kt, becoming SE in the afternoon. Seas
3 to 4 ft. Wave Detail: S 3 ft at 7 seconds and SE 2 ft at
8 seconds.
.MON NIGHT AND TUE...SW winds 15 to 20 kt with gusts up to 25 kt.
Seas 3 to 5 ft. Wave Detail: SW 5 ft at 5 seconds and SE 2 ft at
8 seconds.
.TUE NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas
4 to 6 ft. Wave Detail: SW 6 ft at 6 seconds and SE 2 ft at
16 seconds.
.WED...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to
6 ft.
.WED NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas
4 to 6 ft. A chance of showers.
.THU AND THU NIGHT...N winds 10 to 15 kt, becoming NE 5 to 10 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.
$$
ANZ232-171200-
Nantucket Sound-
703 PM EDT Sat May 16 2026
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING...
.TONIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
4 ft. Wave Detail: SW 4 ft at 4 seconds and SE 2 ft at 8 seconds.
.SUN...SW winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SW
3 ft at 4 seconds and E 1 foot at 9 seconds.
.SUN NIGHT...W winds 10 to 15 kt, becoming N 5 to 10 kt after
midnight. Seas 2 to 3 ft. Wave Detail: W 2 ft at 4 seconds and SE
1 foot at 9 seconds.
.MON...E winds 5 to 10 kt, becoming SE in the afternoon. Seas
around 2 ft. Wave Detail: NE 1 foot at 5 seconds and SW 1 foot at
6 seconds.
.MON NIGHT THROUGH TUE NIGHT...SW winds 15 to 20 kt with gusts up
to 25 kt. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and E
1 foot at 7 seconds.
.WED...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
4 ft. Wave Detail: SW 3 ft at 4 seconds and SE 1 foot at
9 seconds.
.WED NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas
2 to 4 ft. A chance of showers.
.THU...N winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers.
.THU NIGHT...NE winds 5 to 10 kt. Seas around 2 ft.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
ANZ233-171200-
Vineyard Sound-
703 PM EDT Sat May 16 2026
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING...
.TONIGHT...SW winds 15 to 20 kt, increasing to 20 to 25 kt after
midnight. Seas 3 to 4 ft. Wave Detail: SW 4 ft at 5 seconds and
SE 2 ft at 8 seconds. A slight chance of showers after midnight.
.SUN...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. Wave Detail: SW 4 ft at 7 seconds and SE 2 ft at 8 seconds.
.SUN NIGHT...SW winds 10 to 15 kt, becoming N 5 to 10 kt after
midnight. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 7 seconds and S
2 ft at 8 seconds.
.MON...E winds 5 to 10 kt, becoming SE in the afternoon. Seas
around 2 ft. Wave Detail: SW 2 ft at 7 seconds and E 1 foot at
5 seconds.
.MON NIGHT...S winds 5 to 10 kt, becoming SW 10 to 15 kt after
midnight. Seas around 2 ft. Wave Detail: SW 2 ft at 7 seconds and
SE 1 foot at 9 seconds.
.TUE AND TUE NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt.
Seas 2 to 4 ft. Wave Detail: SW 4 ft at 7 seconds and SE 2 ft at
14 seconds.
.WED...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
4 ft.
.WED NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas
2 to 4 ft. A chance of showers.
.THU...N winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers.
.THU 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.
$$
ANZ234-171200-
Buzzards Bay-
703 PM EDT Sat May 16 2026
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING...
.TONIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
4 ft. Wave Detail: SW 4 ft at 5 seconds and SE 2 ft at
12 seconds. A slight chance of showers after midnight.
.SUN...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Wave Detail: SW 3 ft at 6 seconds and SE 1 foot at
9 seconds.
.SUN NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt,
becoming N 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave
Detail: SW 2 ft at 6 seconds and SE 1 foot at 9 seconds.
.MON...E winds 5 to 10 kt, becoming SE in the afternoon. Seas
around 2 ft. Wave Detail: E 2 ft at 5 seconds and SW 1 foot at
7 seconds.
.MON NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
S 1 foot at 7 seconds.
.TUE AND TUE NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt.
Seas 2 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and S 2 ft at
11 seconds.
.WED...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
4 ft.
.WED NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas
2 to 4 ft. A chance of showers.
.THU...N winds 5 to 10 kt. Seas around 2 ft. A chance of showers.
.THU NIGHT...NE winds 5 to 10 kt. Seas around 2 ft.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
ANZ235-171200-
Rhode Island Sound-
703 PM EDT Sat May 16 2026
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT SUNDAY...
.TONIGHT...SW winds 20 to 25 kt. Seas 3 to 5 ft. Wave Detail: SW
5 ft at 6 seconds and SE 3 ft at 9 seconds.
.SUN...SW winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Seas 3 to 5 ft. Wave Detail: SW 5 ft at 7 seconds and
SE 3 ft at 9 seconds.
.SUN NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt,
becoming N 5 to 10 kt after midnight. Seas 2 to 4 ft. Wave
Detail: SW 4 ft at 7 seconds and SE 2 ft at 8 seconds.
.MON...E winds around 10 kt, becoming SE in the afternoon. Seas
2 to 3 ft. Wave Detail: S 3 ft at 7 seconds and SE 2 ft at
8 seconds.
.MON NIGHT AND TUE...SW winds 15 to 20 kt with gusts up to 25 kt.
Seas 2 to 4 ft. Wave Detail: SW 4 ft at 5 seconds and SE 2 ft at
8 seconds.
.TUE NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas
3 to 5 ft. Wave Detail: SW 5 ft at 7 seconds and SE 1 foot at
16 seconds.
.WED...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
5 ft.
.WED NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas
3 to 5 ft. A chance of showers.
.THU...N winds around 10 kt. Seas 3 to 4 ft. A chance of showers.
.THU 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.
$$
ANZ237-171200-
Block Island Sound-
703 PM EDT Sat May 16 2026
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT SUNDAY...
.TONIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to
5 ft. Wave Detail: SW 5 ft at 5 seconds and SE 3 ft at 9 seconds.
A chance of showers after midnight.
.SUN...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
5 ft. Wave Detail: SW 4 ft at 7 seconds and SE 3 ft at 9 seconds.
.SUN NIGHT...SW winds 10 to 15 kt, becoming N 5 to 10 kt after
midnight. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 7 seconds and
SE 2 ft at 8 seconds.
.MON...E winds 5 to 10 kt, becoming SE in the afternoon. Seas
2 to 3 ft. Wave Detail: S 3 ft at 7 seconds and SE 2 ft at
8 seconds.
.MON NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
S 2 ft at 7 seconds and SE 2 ft at 8 seconds.
.TUE AND TUE NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt.
Seas 2 to 4 ft. Wave Detail: SW 4 ft at 6 seconds and SE 2 ft at
9 seconds.
.WED...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
4 ft. A chance of showers.
.WED NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas
3 to 4 ft. A chance of showers.
.THU...N winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers.
.THU NIGHT...NE winds 5 to 10 kt. Seas 2 to 3 ft.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
ANZ230-171200-
Boston Harbor-
703 PM EDT Sat May 16 2026
.TONIGHT...SW winds 15 to 20 kt, diminishing to 10 to 15 kt after
midnight. Waves around 2 ft. A slight chance of showers after
midnight.
.SUN...W winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Waves around 2 ft.
.SUN NIGHT...NW winds 5 to 10 kt, becoming NE after midnight.
Waves around 2 ft in the evening, then 1 foot or less.
.MON...E winds 5 to 10 kt, becoming SE 10 to 15 kt in the
afternoon. Waves 1 foot or less, then around 2 ft in the
afternoon.
.MON NIGHT THROUGH TUE NIGHT...SW winds 10 to 15 kt with gusts up
to 20 kt. Waves around 2 ft.
.WED AND WED NIGHT...W winds 10 to 15 kt with gusts up to 20 kt.
Waves around 2 ft. A chance of showers.
.THU AND THU NIGHT...N winds 5 to 10 kt. Waves around 2 ft, then
1 foot or less.
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.
$$
ANZ236-171200-
Narragansett Bay-
703 PM EDT Sat May 16 2026
.TONIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Waves
2 to 3 ft. A slight chance of showers after midnight.
.SUN...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 20 kt in the afternoon. Waves 2 to 3 ft.
.SUN NIGHT...W winds 5 to 10 kt, becoming N after midnight. Waves
2 to 3 ft.
.MON...E winds 5 to 10 kt, becoming SE in the afternoon. Waves
around 2 ft.
.MON NIGHT THROUGH TUE NIGHT...SW winds 10 to 15 kt with gusts up
to 20 kt. Waves 2 to 3 ft.
.WED AND WED NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt.
Waves 2 to 3 ft. A chance of showers.
.THU...N winds 5 to 10 kt. Waves 2 to 3 ft. A chance of showers.
.THU NIGHT...NE winds 5 to 10 kt. Waves around 2 ft.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
ANZ280-171200-
Ocean Waters from the Merrimack River to Plymouth from 40 to
60 NM-
703 PM EDT Sat May 16 2026
.TONIGHT...SW winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to
7 ft. Wave Detail: S 6 ft at 6 seconds and SE 4 ft at 9 seconds.
A slight chance of showers after midnight.
.SUN...SW winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: SW
5 ft at 6 seconds and SE 4 ft at 9 seconds.
.SUN NIGHT...NW winds 10 to 15 kt, becoming N after midnight.
Seas 3 to 4 ft. Wave Detail: S 3 ft at 8 seconds and W 2 ft at
4 seconds.
.MON...NE winds 5 to 10 kt, becoming SE in the afternoon. Seas
2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds and NW 1 foot at
3 seconds.
.MON NIGHT THROUGH TUE NIGHT...SW winds 15 to 20 kt with gusts up
to 30 kt. Seas 3 to 5 ft. Wave Detail: S 5 ft at 7 seconds.
.WED...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to
5 ft. Wave Detail: SW 5 ft at 6 seconds and SE 1 foot at
15 seconds.
.WED NIGHT...W winds 15 to 20 kt with gusts up to 30 kt. Seas
3 to 5 ft. A chance of showers.
.THU...N winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. A chance of showers.
.THU NIGHT...NW winds 5 to 10 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.
$$
ANZ281-171200-
Ocean Waters from Provincetown to Nantucket from 20 to 60 NM-
703 PM EDT Sat May 16 2026
.TONIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to
6 ft. Wave Detail: SW 6 ft at 6 seconds and SE 4 ft at 9 seconds.
.SUN...SW winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: SW
6 ft at 7 seconds and SE 4 ft at 9 seconds.
.SUN NIGHT...W winds 10 to 15 kt, becoming N after midnight. Seas
3 to 5 ft. Wave Detail: W 3 ft at 7 seconds and S 3 ft at
8 seconds.
.MON...NE winds 5 to 10 kt, becoming SE in the afternoon. Seas
3 to 4 ft. Wave Detail: SW 3 ft at 7 seconds and E 3 ft at
8 seconds.
.MON NIGHT AND TUE...SW winds 15 to 20 kt with gusts up to 30 kt.
Seas 3 to 5 ft. Wave Detail: SW 5 ft at 5 seconds and S 2 ft at
8 seconds.
.TUE NIGHT...SW winds around 20 kt with gusts up to 30 kt. Seas
5 to 6 ft. Wave Detail: SW 6 ft at 6 seconds and SE 2 ft at
9 seconds.
.WED...SW winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to
6 ft.
.WED NIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas
4 to 6 ft. A chance of showers.
.THU...N winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
5 ft. A chance of showers.
.THU NIGHT...N winds 5 to 10 kt. Seas 3 to 5 ft.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
ANZ282-171200-
Ocean Waters from Marthas Vineyard to Nantucket from 25 to 60 NM-
703 PM EDT Sat May 16 2026
.TONIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to
6 ft. Wave Detail: SW 6 ft at 6 seconds and E 4 ft at 9 seconds.
.SUN...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to
6 ft. Wave Detail: SW 6 ft at 6 seconds and SE 3 ft at 9 seconds.
.SUN NIGHT...SW winds 10 to 15 kt, becoming NW 5 to 10 kt after
midnight. Seas 4 to 5 ft. Wave Detail: SW 4 ft at 7 seconds and S
3 ft at 8 seconds. Patchy fog after midnight with vsby 1 NM or
less.
.MON...E winds 5 to 10 kt, becoming SE in the afternoon. Seas
3 to 4 ft. Wave Detail: SW 3 ft at 7 seconds and SE 2 ft at
8 seconds.
.MON NIGHT AND TUE...SW winds 15 to 20 kt with gusts up to 25 kt.
Seas 3 to 5 ft. Wave Detail: SW 5 ft at 5 seconds and SE 2 ft at
9 seconds.
.TUE NIGHT...SW winds around 20 kt with gusts up to 25 kt. Seas
4 to 6 ft. Wave Detail: SW 6 ft at 6 seconds and SE 2 ft at
9 seconds.
.WED...SW winds around 20 kt with gusts up to 25 kt. Seas 5 to
6 ft.
.WED NIGHT THROUGH THU NIGHT...NE winds 15 to 20 kt with gusts up
to 25 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.
$$
ANZ283-171200-
Ocean Waters from Montauk NY to Marthas Vineyard from 25 to 60 NM-
703 PM EDT Sat May 16 2026
.TONIGHT...SW winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to
6 ft. Wave Detail: SW 6 ft at 6 seconds and E 4 ft at 9 seconds.
.SUN...SW winds 15 to 20 kt with gusts up to 25 kt, diminishing
to 10 to 15 kt in the afternoon. Seas 5 to 6 ft. Wave Detail: SW
6 ft at 7 seconds and SE 3 ft at 9 seconds.
.SUN NIGHT...SW winds 10 to 15 kt, becoming W 5 to 10 kt after
midnight. Seas 4 to 5 ft. Wave Detail: SW 4 ft at 7 seconds and
SE 3 ft at 8 seconds.
.MON...E winds 5 to 10 kt, becoming SE in the afternoon. Seas
3 to 4 ft. Wave Detail: SW 3 ft at 7 seconds and SE 2 ft at
8 seconds.
.MON NIGHT AND TUE...SW winds 15 to 20 kt with gusts up to 25 kt.
Seas 3 to 5 ft. Wave Detail: SW 4 ft at 5 seconds and SE 2 ft at
9 seconds.
.TUE NIGHT...SW winds around 20 kt with gusts up to 30 kt. Seas
5 to 6 ft. Wave Detail: SW 6 ft at 6 seconds and SE 2 ft at
9 seconds.
.WED...SW winds around 20 kt with gusts up to 25 kt. Seas 5 to
6 ft.
.WED NIGHT THROUGH THU NIGHT...NE winds 15 to 20 kt with gusts up
to 30 kt. Seas 4 to 6 ft. A chance of showers.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
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
CWFBOX
Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
703 PM EDT Sat May 16 2026
Coastal waters from the Merrimack River MA to Watch Hill RI out
to 60 NM
ANZ200-171200-
703 PM EDT Sat May 16 2026
.Synopsis for Massachusetts and Rhode Island coastal waters...
After a period of Small Craft Advisory conditions through Sunday
afternoon, a Bermuda high develops into early next week, providing
tranquil boating weather across the MA and RI waters. Next trough of
low pressure may arrive around Wednesday.
$$
ANZ250-171200-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
703 PM EDT Sat May 16 2026
...SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY AFTERNOON...
.TONIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to
5 ft. Wave Detail: S 4 ft at 5 seconds and E 4 ft at 9 seconds. A
slight chance of showers after midnight.
.SUN...SW winds 10 to 15 kt. Gusts up to 20 kt in the morning.
Seas 2 to 4 ft. Wave Detail: SW 3 ft at 5 seconds and SE 3 ft at
9 seconds.
.SUN NIGHT...NW winds 5 to 10 kt, becoming NE after midnight.
Seas 2 to 3 ft. Wave Detail: SE 2 ft at 8 seconds and W 1 foot at
3 seconds.
.MON...E winds around 5 kt, becoming SE 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: S 2 ft
at 3 seconds and SE 2 ft at 7 seconds.
.MON NIGHT THROUGH TUE NIGHT...SW winds 15 to 20 kt with gusts up
to 25 kt. Seas 2 to 4 ft. Wave Detail: SW 4 ft at 4 seconds and
SE 2 ft at 8 seconds.
.WED AND WED NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt.
Seas 2 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and SE 2 ft at
9 seconds. A chance of showers.
.THU AND THU NIGHT...N winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt. Seas 2 to 3 ft.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
ANZ251-171200-
Massachusetts Bay and Ipswich Bay-
703 PM EDT Sat May 16 2026
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT SUNDAY...
.TONIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
4 ft. Wave Detail: S 3 ft at 4 seconds and E 3 ft at 10 seconds.
A slight chance of showers after midnight.
.SUN...SW winds 10 to 15 kt, becoming W 5 to 10 kt in the
afternoon. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and
E 2 ft at 9 seconds.
.SUN NIGHT...NW winds 5 to 10 kt, becoming NE after midnight.
Seas around 2 ft. Wave Detail: W 1 foot at 3 seconds and E 1 foot
at 9 seconds.
.MON...E winds around 5 kt, becoming SE 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas 1 foot or less, then around 2 ft
in the afternoon. Wave Detail: W 1 foot at 3 seconds and NE
1 foot at 6 seconds, becoming SE 2 ft at 3 seconds and E 1 foot
at 6 seconds.
.MON NIGHT THROUGH TUE NIGHT...SW winds 15 to 20 kt. Seas 2 to
3 ft. Wave Detail: SW 3 ft at 4 seconds and E 1 foot at
7 seconds.
.WED AND WED NIGHT...W winds 10 to 15 kt with gusts up to 25 kt.
Seas 2 to 3 ft. Wave Detail: SW 2 ft at 3 seconds and SE 1 foot
at 9 seconds. A chance of showers.
.THU AND THU NIGHT...N winds 5 to 10 kt. Seas 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.
$$
ANZ231-171200-
Cape Cod Bay-
703 PM EDT Sat May 16 2026
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING...
.TONIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
4 ft. Wave Detail: SW 3 ft at 3 seconds and E 1 foot at
8 seconds. A chance of showers after midnight.
.SUN...SW winds 10 to 15 kt with gusts up to 20 kt, diminishing
to 5 to 10 kt in the afternoon. Seas around 2 ft. Wave Detail: SW
2 ft at 3 seconds and E 1 foot at 9 seconds.
.SUN NIGHT...W winds 5 to 10 kt, becoming NE after midnight. Seas
around 2 ft in the evening, then 1 foot or less. Wave Detail: W
1 foot at 2 seconds and SE 1 foot at 9 seconds, becoming NW
1 foot at 3 seconds and E 1 foot at 8 seconds.
.MON...E winds 5 to 10 kt. Seas 1 foot or less, then around 2 ft
in the afternoon. Wave Detail: NW 1 foot at 3 seconds and NE
1 foot at 3 seconds, becoming E 1 foot at 3 seconds.
.MON NIGHT...S winds around 10 kt. Seas around 2 ft. Wave Detail:
S 1 foot at 2 seconds and NE 1 foot at 4 seconds.
.TUE AND TUE NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt.
Seas 2 to 4 ft. Wave Detail: SW 2 ft at 3 seconds and E 1 foot at
5 seconds.
.WED...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
4 ft. A chance of showers.
.WED NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas
2 to 4 ft. A chance of showers.
.THU...N winds 5 to 10 kt. Seas around 2 ft. A chance of showers.
.THU NIGHT...NE winds 5 to 10 kt. Seas around 2 ft.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
ANZ254-171200-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 NM-
703 PM EDT Sat May 16 2026
...SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY AFTERNOON...
.TONIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to
6 ft. Wave Detail: SW 5 ft at 6 seconds and E 4 ft at 9 seconds.
.SUN...SW winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: SW
5 ft at 6 seconds and SE 3 ft at 9 seconds.
.SUN NIGHT...W winds 10 to 15 kt, becoming N 5 to 10 kt after
midnight. Seas 2 to 4 ft. Wave Detail: W 3 ft at 4 seconds and SE
3 ft at 8 seconds.
.MON...E winds 5 to 10 kt, becoming SE in the afternoon. Seas
2 to 3 ft. Wave Detail: NE 3 ft at 7 seconds and W 2 ft at
4 seconds.
.MON NIGHT...S winds 10 to 15 kt. Gusts up to 20 kt after
midnight. Seas 2 to 3 ft. Wave Detail: S 2 ft at 4 seconds and SE
2 ft at 7 seconds.
.TUE AND TUE NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt.
Seas 3 to 5 ft. Wave Detail: SW 5 ft at 6 seconds and SE 2 ft at
9 seconds.
.WED...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
5 ft.
.WED NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas
3 to 5 ft. A chance of showers.
.THU...N winds 10 to 15 kt. Seas 2 to 4 ft. A chance of showers.
.THU NIGHT...NE winds 5 to 10 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.
$$
ANZ255-171200-
Coastal Waters extending out to 25 NM South of Marthas Vineyard
and Nantucket-
703 PM EDT Sat May 16 2026
...SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY AFTERNOON...
.TONIGHT...SW winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to
6 ft. Wave Detail: SW 6 ft at 6 seconds and SE 4 ft at 9 seconds.
.SUN...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to
6 ft. Wave Detail: SW 6 ft at 7 seconds and SE 3 ft at 9 seconds.
.SUN NIGHT...W winds 10 to 15 kt, becoming N 5 to 10 kt after
midnight. Seas 3 to 4 ft. Wave Detail: SW 4 ft at 7 seconds and S
3 ft at 8 seconds.
.MON...E winds around 10 kt, becoming SE in the afternoon. Seas
2 to 4 ft. Wave Detail: SW 3 ft at 7 seconds and SE 2 ft at
10 seconds.
.MON NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S
2 ft at 7 seconds.
.TUE...SW winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. Gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: SW
5 ft at 5 seconds and SE 2 ft at 9 seconds.
.TUE NIGHT...SW winds around 20 kt with gusts up to 25 kt. Seas
4 to 6 ft.
.WED...SW winds around 20 kt with gusts up to 25 kt. Seas 4 to
6 ft.
.WED NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas
4 to 6 ft. A chance of showers.
.THU AND THU NIGHT...N winds 10 to 15 kt, becoming NE 5 to 10 kt.
Seas 3 to 5 ft. A chance of showers.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
ANZ256-171200-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 NM South of Block Island-
703 PM EDT Sat May 16 2026
...SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY AFTERNOON...
.TONIGHT...SW winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to
6 ft. Wave Detail: SW 6 ft at 7 seconds and SE 4 ft at 9 seconds.
.SUN...SW winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: SW
6 ft at 7 seconds and SE 3 ft at 9 seconds.
.SUN NIGHT...SW winds 10 to 15 kt, becoming N 5 to 10 kt after
midnight. Seas 3 to 4 ft. Wave Detail: SW 4 ft at 7 seconds and
SE 2 ft at 8 seconds.
.MON...E winds around 10 kt, becoming SE in the afternoon. Seas
3 to 4 ft. Wave Detail: S 3 ft at 7 seconds and SE 2 ft at
8 seconds.
.MON NIGHT AND TUE...SW winds 15 to 20 kt with gusts up to 25 kt.
Seas 3 to 5 ft. Wave Detail: SW 5 ft at 5 seconds and SE 2 ft at
8 seconds.
.TUE NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas
4 to 6 ft. Wave Detail: SW 6 ft at 6 seconds and SE 2 ft at
16 seconds.
.WED...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to
6 ft.
.WED NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas
4 to 6 ft. A chance of showers.
.THU AND THU NIGHT...N winds 10 to 15 kt, becoming NE 5 to 10 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.
$$
ANZ232-171200-
Nantucket Sound-
703 PM EDT Sat May 16 2026
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING...
.TONIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
4 ft. Wave Detail: SW 4 ft at 4 seconds and SE 2 ft at 8 seconds.
.SUN...SW winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SW
3 ft at 4 seconds and E 1 foot at 9 seconds.
.SUN NIGHT...W winds 10 to 15 kt, becoming N 5 to 10 kt after
midnight. Seas 2 to 3 ft. Wave Detail: W 2 ft at 4 seconds and SE
1 foot at 9 seconds.
.MON...E winds 5 to 10 kt, becoming SE in the afternoon. Seas
around 2 ft. Wave Detail: NE 1 foot at 5 seconds and SW 1 foot at
6 seconds.
.MON NIGHT THROUGH TUE NIGHT...SW winds 15 to 20 kt with gusts up
to 25 kt. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and E
1 foot at 7 seconds.
.WED...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
4 ft. Wave Detail: SW 3 ft at 4 seconds and SE 1 foot at
9 seconds.
.WED NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas
2 to 4 ft. A chance of showers.
.THU...N winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers.
.THU NIGHT...NE winds 5 to 10 kt. Seas around 2 ft.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
ANZ233-171200-
Vineyard Sound-
703 PM EDT Sat May 16 2026
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING...
.TONIGHT...SW winds 15 to 20 kt, increasing to 20 to 25 kt after
midnight. Seas 3 to 4 ft. Wave Detail: SW 4 ft at 5 seconds and
SE 2 ft at 8 seconds. A slight chance of showers after midnight.
.SUN...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. Wave Detail: SW 4 ft at 7 seconds and SE 2 ft at 8 seconds.
.SUN NIGHT...SW winds 10 to 15 kt, becoming N 5 to 10 kt after
midnight. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 7 seconds and S
2 ft at 8 seconds.
.MON...E winds 5 to 10 kt, becoming SE in the afternoon. Seas
around 2 ft. Wave Detail: SW 2 ft at 7 seconds and E 1 foot at
5 seconds.
.MON NIGHT...S winds 5 to 10 kt, becoming SW 10 to 15 kt after
midnight. Seas around 2 ft. Wave Detail: SW 2 ft at 7 seconds and
SE 1 foot at 9 seconds.
.TUE AND TUE NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt.
Seas 2 to 4 ft. Wave Detail: SW 4 ft at 7 seconds and SE 2 ft at
14 seconds.
.WED...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
4 ft.
.WED NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas
2 to 4 ft. A chance of showers.
.THU...N winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers.
.THU 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.
$$
ANZ234-171200-
Buzzards Bay-
703 PM EDT Sat May 16 2026
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING...
.TONIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
4 ft. Wave Detail: SW 4 ft at 5 seconds and SE 2 ft at
12 seconds. A slight chance of showers after midnight.
.SUN...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Wave Detail: SW 3 ft at 6 seconds and SE 1 foot at
9 seconds.
.SUN NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt,
becoming N 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave
Detail: SW 2 ft at 6 seconds and SE 1 foot at 9 seconds.
.MON...E winds 5 to 10 kt, becoming SE in the afternoon. Seas
around 2 ft. Wave Detail: E 2 ft at 5 seconds and SW 1 foot at
7 seconds.
.MON NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
S 1 foot at 7 seconds.
.TUE AND TUE NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt.
Seas 2 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and S 2 ft at
11 seconds.
.WED...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
4 ft.
.WED NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas
2 to 4 ft. A chance of showers.
.THU...N winds 5 to 10 kt. Seas around 2 ft. A chance of showers.
.THU NIGHT...NE winds 5 to 10 kt. Seas around 2 ft.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
ANZ235-171200-
Rhode Island Sound-
703 PM EDT Sat May 16 2026
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT SUNDAY...
.TONIGHT...SW winds 20 to 25 kt. Seas 3 to 5 ft. Wave Detail: SW
5 ft at 6 seconds and SE 3 ft at 9 seconds.
.SUN...SW winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Seas 3 to 5 ft. Wave Detail: SW 5 ft at 7 seconds and
SE 3 ft at 9 seconds.
.SUN NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt,
becoming N 5 to 10 kt after midnight. Seas 2 to 4 ft. Wave
Detail: SW 4 ft at 7 seconds and SE 2 ft at 8 seconds.
.MON...E winds around 10 kt, becoming SE in the afternoon. Seas
2 to 3 ft. Wave Detail: S 3 ft at 7 seconds and SE 2 ft at
8 seconds.
.MON NIGHT AND TUE...SW winds 15 to 20 kt with gusts up to 25 kt.
Seas 2 to 4 ft. Wave Detail: SW 4 ft at 5 seconds and SE 2 ft at
8 seconds.
.TUE NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas
3 to 5 ft. Wave Detail: SW 5 ft at 7 seconds and SE 1 foot at
16 seconds.
.WED...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
5 ft.
.WED NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas
3 to 5 ft. A chance of showers.
.THU...N winds around 10 kt. Seas 3 to 4 ft. A chance of showers.
.THU 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.
$$
ANZ237-171200-
Block Island Sound-
703 PM EDT Sat May 16 2026
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT SUNDAY...
.TONIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to
5 ft. Wave Detail: SW 5 ft at 5 seconds and SE 3 ft at 9 seconds.
A chance of showers after midnight.
.SUN...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
5 ft. Wave Detail: SW 4 ft at 7 seconds and SE 3 ft at 9 seconds.
.SUN NIGHT...SW winds 10 to 15 kt, becoming N 5 to 10 kt after
midnight. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 7 seconds and
SE 2 ft at 8 seconds.
.MON...E winds 5 to 10 kt, becoming SE in the afternoon. Seas
2 to 3 ft. Wave Detail: S 3 ft at 7 seconds and SE 2 ft at
8 seconds.
.MON NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
S 2 ft at 7 seconds and SE 2 ft at 8 seconds.
.TUE AND TUE NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt.
Seas 2 to 4 ft. Wave Detail: SW 4 ft at 6 seconds and SE 2 ft at
9 seconds.
.WED...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
4 ft. A chance of showers.
.WED NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas
3 to 4 ft. A chance of showers.
.THU...N winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers.
.THU NIGHT...NE winds 5 to 10 kt. Seas 2 to 3 ft.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
ANZ230-171200-
Boston Harbor-
703 PM EDT Sat May 16 2026
.TONIGHT...SW winds 15 to 20 kt, diminishing to 10 to 15 kt after
midnight. Waves around 2 ft. A slight chance of showers after
midnight.
.SUN...W winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Waves around 2 ft.
.SUN NIGHT...NW winds 5 to 10 kt, becoming NE after midnight.
Waves around 2 ft in the evening, then 1 foot or less.
.MON...E winds 5 to 10 kt, becoming SE 10 to 15 kt in the
afternoon. Waves 1 foot or less, then around 2 ft in the
afternoon.
.MON NIGHT THROUGH TUE NIGHT...SW winds 10 to 15 kt with gusts up
to 20 kt. Waves around 2 ft.
.WED AND WED NIGHT...W winds 10 to 15 kt with gusts up to 20 kt.
Waves around 2 ft. A chance of showers.
.THU AND THU NIGHT...N winds 5 to 10 kt. Waves around 2 ft, then
1 foot or less.
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.
$$
ANZ236-171200-
Narragansett Bay-
703 PM EDT Sat May 16 2026
.TONIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Waves
2 to 3 ft. A slight chance of showers after midnight.
.SUN...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 20 kt in the afternoon. Waves 2 to 3 ft.
.SUN NIGHT...W winds 5 to 10 kt, becoming N after midnight. Waves
2 to 3 ft.
.MON...E winds 5 to 10 kt, becoming SE in the afternoon. Waves
around 2 ft.
.MON NIGHT THROUGH TUE NIGHT...SW winds 10 to 15 kt with gusts up
to 20 kt. Waves 2 to 3 ft.
.WED AND WED NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt.
Waves 2 to 3 ft. A chance of showers.
.THU...N winds 5 to 10 kt. Waves 2 to 3 ft. A chance of showers.
.THU NIGHT...NE winds 5 to 10 kt. Waves around 2 ft.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
ANZ280-171200-
Ocean Waters from the Merrimack River to Plymouth from 40 to
60 NM-
703 PM EDT Sat May 16 2026
.TONIGHT...SW winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to
7 ft. Wave Detail: S 6 ft at 6 seconds and SE 4 ft at 9 seconds.
A slight chance of showers after midnight.
.SUN...SW winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: SW
5 ft at 6 seconds and SE 4 ft at 9 seconds.
.SUN NIGHT...NW winds 10 to 15 kt, becoming N after midnight.
Seas 3 to 4 ft. Wave Detail: S 3 ft at 8 seconds and W 2 ft at
4 seconds.
.MON...NE winds 5 to 10 kt, becoming SE in the afternoon. Seas
2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds and NW 1 foot at
3 seconds.
.MON NIGHT THROUGH TUE NIGHT...SW winds 15 to 20 kt with gusts up
to 30 kt. Seas 3 to 5 ft. Wave Detail: S 5 ft at 7 seconds.
.WED...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to
5 ft. Wave Detail: SW 5 ft at 6 seconds and SE 1 foot at
15 seconds.
.WED NIGHT...W winds 15 to 20 kt with gusts up to 30 kt. Seas
3 to 5 ft. A chance of showers.
.THU...N winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. A chance of showers.
.THU NIGHT...NW winds 5 to 10 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.
$$
ANZ281-171200-
Ocean Waters from Provincetown to Nantucket from 20 to 60 NM-
703 PM EDT Sat May 16 2026
.TONIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to
6 ft. Wave Detail: SW 6 ft at 6 seconds and SE 4 ft at 9 seconds.
.SUN...SW winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: SW
6 ft at 7 seconds and SE 4 ft at 9 seconds.
.SUN NIGHT...W winds 10 to 15 kt, becoming N after midnight. Seas
3 to 5 ft. Wave Detail: W 3 ft at 7 seconds and S 3 ft at
8 seconds.
.MON...NE winds 5 to 10 kt, becoming SE in the afternoon. Seas
3 to 4 ft. Wave Detail: SW 3 ft at 7 seconds and E 3 ft at
8 seconds.
.MON NIGHT AND TUE...SW winds 15 to 20 kt with gusts up to 30 kt.
Seas 3 to 5 ft. Wave Detail: SW 5 ft at 5 seconds and S 2 ft at
8 seconds.
.TUE NIGHT...SW winds around 20 kt with gusts up to 30 kt. Seas
5 to 6 ft. Wave Detail: SW 6 ft at 6 seconds and SE 2 ft at
9 seconds.
.WED...SW winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to
6 ft.
.WED NIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas
4 to 6 ft. A chance of showers.
.THU...N winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
5 ft. A chance of showers.
.THU NIGHT...N winds 5 to 10 kt. Seas 3 to 5 ft.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
ANZ282-171200-
Ocean Waters from Marthas Vineyard to Nantucket from 25 to 60 NM-
703 PM EDT Sat May 16 2026
.TONIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to
6 ft. Wave Detail: SW 6 ft at 6 seconds and E 4 ft at 9 seconds.
.SUN...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to
6 ft. Wave Detail: SW 6 ft at 6 seconds and SE 3 ft at 9 seconds.
.SUN NIGHT...SW winds 10 to 15 kt, becoming NW 5 to 10 kt after
midnight. Seas 4 to 5 ft. Wave Detail: SW 4 ft at 7 seconds and S
3 ft at 8 seconds. Patchy fog after midnight with vsby 1 NM or
less.
.MON...E winds 5 to 10 kt, becoming SE in the afternoon. Seas
3 to 4 ft. Wave Detail: SW 3 ft at 7 seconds and SE 2 ft at
8 seconds.
.MON NIGHT AND TUE...SW winds 15 to 20 kt with gusts up to 25 kt.
Seas 3 to 5 ft. Wave Detail: SW 5 ft at 5 seconds and SE 2 ft at
9 seconds.
.TUE NIGHT...SW winds around 20 kt with gusts up to 25 kt. Seas
4 to 6 ft. Wave Detail: SW 6 ft at 6 seconds and SE 2 ft at
9 seconds.
.WED...SW winds around 20 kt with gusts up to 25 kt. Seas 5 to
6 ft.
.WED NIGHT THROUGH THU NIGHT...NE winds 15 to 20 kt with gusts up
to 25 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.
$$
ANZ283-171200-
Ocean Waters from Montauk NY to Marthas Vineyard from 25 to 60 NM-
703 PM EDT Sat May 16 2026
.TONIGHT...SW winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to
6 ft. Wave Detail: SW 6 ft at 6 seconds and E 4 ft at 9 seconds.
.SUN...SW winds 15 to 20 kt with gusts up to 25 kt, diminishing
to 10 to 15 kt in the afternoon. Seas 5 to 6 ft. Wave Detail: SW
6 ft at 7 seconds and SE 3 ft at 9 seconds.
.SUN NIGHT...SW winds 10 to 15 kt, becoming W 5 to 10 kt after
midnight. Seas 4 to 5 ft. Wave Detail: SW 4 ft at 7 seconds and
SE 3 ft at 8 seconds.
.MON...E winds 5 to 10 kt, becoming SE in the afternoon. Seas
3 to 4 ft. Wave Detail: SW 3 ft at 7 seconds and SE 2 ft at
8 seconds.
.MON NIGHT AND TUE...SW winds 15 to 20 kt with gusts up to 25 kt.
Seas 3 to 5 ft. Wave Detail: SW 4 ft at 5 seconds and SE 2 ft at
9 seconds.
.TUE NIGHT...SW winds around 20 kt with gusts up to 30 kt. Seas
5 to 6 ft. Wave Detail: SW 6 ft at 6 seconds and SE 2 ft at
9 seconds.
.WED...SW winds around 20 kt with gusts up to 25 kt. Seas 5 to
6 ft.
.WED NIGHT THROUGH THU NIGHT...NE winds 15 to 20 kt with gusts up
to 30 kt. Seas 4 to 6 ft. A chance of showers.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
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