Coastal Waters Forecast
Issued by NWS Boston, MA
Issued by NWS Boston, MA
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
763 FZUS51 KBOX 191104 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 704 AM EDT Wed Aug 19 2026 Coastal waters from the Merrimack River MA to Watch Hill RI out to 60 NM ANZ200-200000- 704 AM EDT Wed Aug 19 2026 .Synopsis for Massachusetts and Rhode Island coastal waters... Weak high pres will be offshore by late today. A weak trough of low pres moves through Thu, followed by yet another high pres system for Fri. Unsettled conditions return over the weekend with arrival of another low pres. $$ ANZ250-200000- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 704 AM EDT Wed Aug 19 2026 .TODAY...S winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds. Patchy fog this morning. .TONIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt in the evening. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds and S 2 ft at 3 seconds. .THU...W winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and E 2 ft at 8 seconds. A chance of showers in the afternoon. .THU NIGHT...SW winds around 5 kt, becoming N after midnight. Seas around 2 ft. Wave Detail: E 2 ft at 8 seconds and SW 1 foot at 2 seconds. .FRI...NE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 8 seconds and N 1 foot at 4 seconds. .FRI NIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 8 seconds and N 1 foot at 4 seconds. .SAT...E winds 5 to 10 kt. Seas around 2 ft. A chance of showers. .SAT NIGHT...E winds 5 to 10 kt. Seas around 2 ft. A chance of showers. .SUN AND SUN NIGHT...E winds 5 to 10 kt, becoming SW. Seas 2 to 3 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-200000- Massachusetts Bay and Ipswich Bay- 704 AM EDT Wed Aug 19 2026 .TODAY...SW winds around 5 kt, becoming SE this afternoon. Seas around 2 ft. Wave Detail: E 2 ft at 8 seconds. Patchy fog this morning. .TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 7 seconds and S 1 foot at 3 seconds. .THU...W winds around 5 kt, becoming E in the afternoon. Seas around 2 ft. Wave Detail: E 2 ft at 8 seconds and SW 1 foot at 2 seconds. A chance of showers in the afternoon. .THU NIGHT...SW winds around 5 kt, becoming N after midnight. Seas around 2 ft. Wave Detail: E 2 ft at 8 seconds and SW 1 foot at 2 seconds. .FRI...N winds 5 to 10 kt, becoming NE in the afternoon. Seas around 2 ft. Wave Detail: N 2 ft at 4 seconds and E 2 ft at 8 seconds. .FRI NIGHT...SE winds 5 to 10 kt, diminishing to around 5 kt after midnight. Seas around 2 ft. Wave Detail: E 2 ft at 7 seconds and NW 1 foot at 5 seconds. .SAT THROUGH SUN NIGHT...SW winds 5 to 10 kt. Seas around 2 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. $$ ANZ231-200000- Cape Cod Bay- 704 AM EDT Wed Aug 19 2026 .TODAY...SW winds 5 to 10 kt. Gusts up to 20 kt this afternoon. Seas around 2 ft. Wave Detail: SW 1 foot at 2 seconds and NE 1 foot at 3 seconds. .TONIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt in the evening. Seas around 2 ft in the evening, then 1 foot or less. Wave Detail: SW 1 foot at 2 seconds and E 1 foot at 6 seconds, becoming SW 1 foot at 2 seconds and SE 1 foot at 7 seconds. .THU...SW winds around 5 kt, becoming N in the afternoon. Seas 1 foot or less. Wave Detail: SW 1 foot at 2 seconds and E 1 foot at 8 seconds. A chance of showers in the afternoon. .THU NIGHT...W winds around 5 kt, becoming NW after midnight. Seas 1 foot or less. Wave Detail: SW 1 foot at 2 seconds and E 1 foot at 7 seconds. .FRI AND FRI NIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: NW 1 foot at 3 seconds and NE 1 foot at 8 seconds. .SAT AND SAT NIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 1 foot at 2 seconds and SW 1 foot at 4 seconds. A chance of showers. .SUN AND SUN NIGHT...SE winds 5 to 10 kt, becoming SW. Seas around 2 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-200000- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 NM- 704 AM EDT Wed Aug 19 2026 .TODAY...SW winds 5 to 10 kt. Gusts up to 20 kt this afternoon. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds and SW 1 foot at 2 seconds. .TONIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt in the evening. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds and SW 2 ft at 3 seconds. Patchy fog. Vsby 1 to 3 NM, decreasing to 1 NM or less after midnight. .THU...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and E 2 ft at 8 seconds. Patchy fog. Vsby 1 NM or less, increasing to 1 to 3 NM in the afternoon. .THU NIGHT...SW winds around 5 kt, becoming NW after midnight. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and W 1 foot at 3 seconds. .FRI AND FRI NIGHT...NE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 7 seconds and NW 1 foot at 3 seconds. A chance of showers in the morning. A chance of showers after midnight. .SAT AND SAT NIGHT...E winds 10 to 15 kt, becoming SE 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 5 seconds and SE 2 ft at 8 seconds. Showers likely. .SUN...S winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. .SUN NIGHT...SW winds around 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. $$ ANZ255-200000- Coastal Waters extending out to 25 NM South of Marthas Vineyard and Nantucket- 704 AM EDT Wed Aug 19 2026 .TODAY...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds and SW 1 foot at 2 seconds. .TONIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 7 seconds. Patchy fog. Vsby 1 NM or less after midnight. .THU...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds and W 1 foot at 3 seconds. Patchy fog. Vsby 1 NM or less, increasing to 1 to 3 NM in the afternoon. .THU NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and SW 1 foot at 3 seconds. Patchy fog in the evening. A chance of showers after midnight. Vsby 1 to 3 NM in the evening. .FRI AND FRI NIGHT...NE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: NE 2 ft at 3 seconds and SE 2 ft at 8 seconds. A chance of showers in the morning. A chance of showers through the night. .SAT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 4 seconds and S 1 foot at 7 seconds. A chance of showers. .SAT NIGHT...SE winds 10 to 15 kt. Seas 2 to 3 ft. Showers likely. .SUN AND SUN NIGHT...S winds 5 to 10 kt, becoming SW. Seas 2 to 4 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-200000- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 NM South of Block Island- 704 AM EDT Wed Aug 19 2026 .TODAY...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 7 seconds. .TONIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 6 seconds. Patchy fog after midnight with vsby 1 NM or less. .THU...W winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and SW 1 foot at 3 seconds. Patchy fog. Vsby 1 to 3 NM. .THU NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and W 1 foot at 3 seconds. A chance of showers in the evening. .FRI...NE winds around 10 kt. Seas around 2 ft. Wave Detail: NE 2 ft at 7 seconds and SE 2 ft at 8 seconds. .FRI NIGHT...E winds around 10 kt. Seas around 2 ft. Wave Detail: NE 2 ft at 4 seconds and SE 2 ft at 9 seconds. A chance of showers after midnight. .SAT AND SAT NIGHT...E winds 10 to 15 kt. Gusts up to 20 kt. Seas 2 to 3 ft. Showers likely. .SUN...SE winds around 10 kt. Seas 2 to 3 ft. A chance of showers. .SUN NIGHT...SW winds 10 to 15 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. $$ ANZ232-200000- Nantucket Sound- 704 AM EDT Wed Aug 19 2026 .TODAY...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt this afternoon. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and SE 1 foot at 7 seconds. .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and SE 1 foot at 6 seconds. Patchy fog after midnight with vsby 1 NM or less. .THU...SW winds 5 to 10 kt. Seas around 2 ft in the morning, then 1 foot or less. Wave Detail: SW 1 foot at 3 seconds and SE 1 foot at 7 seconds, becoming SW 1 foot at 2 seconds and SE 1 foot at 7 seconds. Patchy fog in the morning. A chance of showers in the afternoon. Vsby 1 NM or less in the morning. .THU NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas around 2 ft in the evening, then 1 foot or less. Wave Detail: W 1 foot at 3 seconds and SE 1 foot at 7 seconds, becoming W 1 foot at 3 seconds and E 1 foot at 8 seconds. .FRI...NE winds around 10 kt. Seas 1 foot or less, then around 2 ft in the afternoon. Wave Detail: NW 1 foot at 3 seconds and NE 1 foot at 8 seconds, becoming NE 1 foot at 3 seconds and NW 1 foot at 4 seconds. .FRI NIGHT...NE winds around 10 kt. Seas around 2 ft in the evening, then 1 foot or less. Wave Detail: NE 1 foot at 3 seconds and NW 1 foot at 4 seconds, becoming E 1 foot at 3 seconds and W 1 foot at 6 seconds. A chance of showers after midnight. .SAT AND SAT NIGHT...E winds 10 to 15 kt. Gusts up to 20 kt. Seas around 2 ft. Showers likely. .SUN...S winds 10 to 15 kt. Seas around 2 ft. A chance of showers. .SUN NIGHT...SW winds 10 to 15 kt. Seas around 2 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-200000- Vineyard Sound- 704 AM EDT Wed Aug 19 2026 .TODAY...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds and SW 1 foot at 4 seconds. .TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds and SW 1 foot at 4 seconds. Patchy fog after midnight with vsby 1 NM or less. .THU...SW winds 5 to 10 kt. Seas around 2 ft in the morning, then 1 foot or less. Wave Detail: SW 1 foot at 4 seconds and SE 1 foot at 7 seconds, becoming SW 1 foot at 3 seconds and SE 1 foot at 7 seconds. Patchy fog in the morning with vsby 1 NM or less. .THU NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas around 2 ft in the evening, then 1 foot or less. Wave Detail: SW 1 foot at 3 seconds and SE 1 foot at 7 seconds, becoming W 1 foot at 3 seconds and E 1 foot at 8 seconds. .FRI...NE winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: W 1 foot at 3 seconds and NE 1 foot at 7 seconds. .FRI NIGHT...E winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: NE 1 foot at 3 seconds and NW 1 foot at 6 seconds. A chance of showers after midnight. .SAT AND SAT NIGHT...E winds 10 to 15 kt. Seas around 2 ft. Showers likely. .SUN AND SUN NIGHT...SE winds 5 to 10 kt, becoming SW 10 to 15 kt. Seas around 2 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. $$ ANZ234-200000- Buzzards Bay- 704 AM EDT Wed Aug 19 2026 .TODAY...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt this afternoon. Seas around 2 ft. Wave Detail: SW 1 foot at 4 seconds and SE 1 foot at 7 seconds. .TONIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt in the evening. Seas around 2 ft. Wave Detail: SW 1 foot at 3 seconds and SE 1 foot at 6 seconds. Patchy fog after midnight with vsby 1 NM or less. .THU...SW winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: SW 1 foot at 3 seconds and SE 1 foot at 7 seconds. Patchy fog in the morning. A chance of showers in the afternoon. Vsby 1 NM or less in the morning. .THU NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas 1 foot or less. Wave Detail: SW 1 foot at 3 seconds and SE 1 foot at 7 seconds. .FRI...NE winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: NW 1 foot at 3 seconds and NE 1 foot at 6 seconds. .FRI NIGHT...E winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: NE 1 foot at 2 seconds and NW 1 foot at 5 seconds. A chance of showers after midnight. .SAT AND SAT NIGHT...E winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt. Seas around 2 ft. Showers likely. .SUN AND SUN NIGHT...SE winds 10 to 15 kt, becoming SW. Gusts up to 20 kt. Seas around 2 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-200000- Rhode Island Sound- 704 AM EDT Wed Aug 19 2026 .TODAY...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 7 seconds and E 1 foot at 9 seconds. Patchy fog this morning. .TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and SE 2 ft at 7 seconds. Patchy fog after midnight with vsby 1 NM or less. .THU...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds and SW 1 foot at 3 seconds. Patchy fog in the morning with vsby 1 NM or less. .THU NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds and SW 1 foot at 3 seconds. .FRI...N winds around 10 kt, becoming NE in the afternoon. Seas around 2 ft. Wave Detail: NW 1 foot at 3 seconds and NE 1 foot at 7 seconds. .FRI NIGHT...E winds around 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 3 seconds and NW 1 foot at 7 seconds. A chance of showers after midnight. .SAT AND SAT NIGHT...E winds 10 to 15 kt. Gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. .SUN...SE winds around 10 kt. Seas 2 to 3 ft. A chance of showers. .SUN NIGHT...SW winds 10 to 15 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. $$ ANZ237-200000- Block Island Sound- 704 AM EDT Wed Aug 19 2026 .TODAY...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 7 seconds. .TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds and SW 1 foot at 3 seconds. Patchy fog after midnight with vsby 1 to 3 NM. .THU...W winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds and SW 1 foot at 2 seconds. Patchy fog in the morning. A chance of showers in the afternoon. Vsby 1 to 3 NM in the morning. .THU NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and W 1 foot at 2 seconds. .FRI...NE winds 5 to 10 kt, becoming E in the afternoon. Seas around 2 ft. Wave Detail: W 1 foot at 4 seconds and NE 1 foot at 8 seconds. .FRI NIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 4 seconds and SE 1 foot at 8 seconds. A chance of showers after midnight. .SAT AND SAT NIGHT...E winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. .SUN...SE winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. .SUN NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-200000- Boston Harbor- 704 AM EDT Wed Aug 19 2026 .TODAY...SW winds around 5 kt, becoming S this afternoon. Waves 1 foot or less. Patchy fog this morning. .TONIGHT...SW winds 5 to 10 kt. Waves 1 foot or less. .THU...W winds around 5 kt, becoming E in the afternoon. Waves 1 foot or less. A chance of showers. .THU NIGHT...SW winds around 5 kt, becoming N after midnight. Waves 1 foot or less. .FRI...N winds 5 to 10 kt, becoming E in the afternoon. Waves 1 foot or less. .FRI NIGHT...SE winds 5 to 10 kt, diminishing to around 5 kt after midnight. Waves 1 foot or less. .SAT THROUGH SUN NIGHT...SW winds 5 to 10 kt. Waves around 2 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. $$ ANZ236-200000- Narragansett Bay- 704 AM EDT Wed Aug 19 2026 .TODAY...SW winds around 5 kt, increasing to 5 to 10 kt this afternoon. Waves around 2 ft. .TONIGHT...SW winds 5 to 10 kt. Waves around 2 ft. Patchy fog after midnight with vsby 1 to 3 NM. .THU...W winds 5 to 10 kt. Waves 1 foot or less. Patchy fog in the morning. A chance of showers in the afternoon. Vsby 1 to 3 NM in the morning. .THU NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Waves 1 foot or less. .FRI AND FRI NIGHT...NE winds 5 to 10 kt. Waves 1 foot or less. .SAT AND SAT NIGHT...E winds 10 to 15 kt, diminishing to 5 to 10 kt. Waves around 2 ft. A chance of showers. .SUN AND SUN NIGHT...SE winds 5 to 10 kt, becoming SW. Waves around 2 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ280-200000- Ocean Waters from the Merrimack River to Plymouth from 40 to 60 NM- 704 AM EDT Wed Aug 19 2026 .TODAY...SW winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up to 20 kt this afternoon. Seas 3 to 4 ft. Wave Detail: E 4 ft at 9 seconds and SE 3 ft at 8 seconds. Patchy fog this morning with vsby 1 to 3 NM. .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 3 ft. Wave Detail: SE 3 ft at 7 seconds and S 2 ft at 4 seconds. Patchy fog. Vsby 1 to 3 NM, decreasing to 1 NM or less after midnight. .THU...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 7 seconds and W 1 foot at 3 seconds. Patchy fog in the morning. A chance of showers in the afternoon. Vsby 1 NM or less in the morning. .THU NIGHT...SW winds around 5 kt, becoming N after midnight. Seas around 2 ft. Wave Detail: NE 2 ft at 8 seconds and SE 2 ft at 8 seconds. .FRI AND FRI NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: N 2 ft at 4 seconds and SE 2 ft at 8 seconds. .SAT AND SAT NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 4 seconds and SE 3 ft at 8 seconds. A chance of showers. .SUN AND SUN NIGHT...SE winds around 10 kt, becoming SW with gusts up to 20 kt. Seas 2 to 3 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. $$ ANZ281-200000- Ocean Waters from Provincetown to Nantucket from 20 to 60 NM- 704 AM EDT Wed Aug 19 2026 .TODAY...SW winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up to 20 kt this afternoon. Seas 3 to 4 ft. Wave Detail: SE 4 ft at 7 seconds and S 2 ft at 4 seconds. Patchy fog this morning with vsby 1 NM or less. .TONIGHT...S winds 10 to 15 kt with gusts up to 20 kt, becoming SW 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave Detail: S 3 ft at 7 seconds and E 2 ft at 8 seconds. Patchy fog. Vsby 1 to 3 NM, decreasing to 1 NM or less after midnight. .THU...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds and E 2 ft at 8 seconds. Patchy fog. Vsby 1 NM or less, increasing to 1 to 3 NM in the afternoon. .THU NIGHT...SW winds around 5 kt, becoming NW after midnight. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and E 2 ft at 8 seconds. .FRI AND FRI NIGHT...NE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: NE 2 ft at 4 seconds and SE 2 ft at 8 seconds. A chance of showers. .SAT AND SAT NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 6 seconds and W 1 foot at 6 seconds. Showers likely. .SUN...S winds around 10 kt. Seas 2 to 4 ft. A chance of showers. .SUN NIGHT...SW winds around 10 kt. Seas 3 to 5 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ282-200000- Ocean Waters from Marthas Vineyard to Nantucket from 25 to 60 NM- 704 AM EDT Wed Aug 19 2026 .TODAY...S winds around 5 kt, increasing to 5 to 10 kt this afternoon. Seas around 3 ft. Wave Detail: E 3 ft at 7 seconds and SW 1 foot at 2 seconds. Patchy fog this morning with vsby 1 to 3 NM. .TONIGHT...SW winds around 5 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 6 seconds and E 2 ft at 7 seconds. Patchy fog. Vsby 1 NM or less after midnight. .THU...SW winds around 5 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and W 1 foot at 3 seconds. Patchy fog. Vsby 1 to 3 NM. .THU NIGHT...W winds around 5 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and W 1 foot at 3 seconds. Patchy fog in the evening. A chance of showers after midnight. Vsby 1 to 3 NM in the evening. .FRI...NE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 8 seconds and SE 2 ft at 9 seconds. A chance of showers. .FRI NIGHT...NE winds around 10 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 5 seconds and SE 2 ft at 8 seconds. A chance of showers. .SAT THROUGH SUN...S winds 10 to 15 kt. Seas 2 to 4 ft. Showers likely. .SUN NIGHT...SW winds around 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. $$ ANZ283-200000- Ocean Waters from Montauk NY to Marthas Vineyard from 25 to 60 NM- 704 AM EDT Wed Aug 19 2026 .TODAY...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds and SW 1 foot at 3 seconds. .TONIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 7 seconds. Patchy fog after midnight with vsby 1 NM or less. .THU...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and W 1 foot at 3 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .THU NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and W 1 foot at 3 seconds. A chance of showers. .FRI AND FRI NIGHT...E winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: NW 2 ft at 5 seconds and NE 2 ft at 8 seconds. A chance of showers. .SAT AND SAT NIGHT...E winds 10 to 15 kt. Gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 5 seconds and W 3 ft at 6 seconds. Showers likely. .SUN AND SUN NIGHT...SW winds 10 to 15 kt. Seas 3 to 5 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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