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
193 FZUS51 KBOX 192005 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 405 PM EDT Wed Aug 19 2026 Coastal waters from the Merrimack River MA to Watch Hill RI out to 60 NM ANZ200-200900- 405 PM 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. $$ ANZ250-200900- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 405 PM EDT Wed Aug 19 2026 .TONIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt this evening. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 5 seconds and SW 1 foot at 3 seconds. .THU...W winds 5 to 10 kt, diminishing to around 5 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 7 seconds and SW 1 foot at 3 seconds. .THU NIGHT...SW winds around 5 kt, becoming N after midnight. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and E 1 foot at 3 seconds. A chance of showers in the evening. .FRI...NE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: NW 2 ft at 4 seconds and E 2 ft at 8 seconds. .FRI NIGHT AND SAT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 4 seconds and S 2 ft at 7 seconds. A chance of showers. .SAT NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 6 seconds and SE 1 foot at 13 seconds. Showers likely. .SUN AND SUN NIGHT...SE winds 5 to 10 kt, becoming SW. Seas 2 to 3 ft. A chance of showers. .MON AND MON NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-200900- Massachusetts Bay and Ipswich Bay- 405 PM EDT Wed Aug 19 2026 .TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and SE 2 ft at 6 seconds. .THU...W winds around 5 kt, becoming E in the afternoon. Seas around 2 ft. Wave Detail: E 2 ft at 7 seconds and SW 1 foot at 2 seconds. .THU NIGHT...SW winds around 5 kt, becoming N after midnight. Seas around 2 ft. Wave Detail: E 2 ft at 8 seconds and E 1 foot at 3 seconds. A chance of showers in the evening. .FRI...NE winds 5 to 10 kt, becoming E in the afternoon. Seas around 2 ft. Wave Detail: N 2 ft at 4 seconds and E 2 ft at 8 seconds. .FRI NIGHT AND SAT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: NE 2 ft at 3 seconds and E 2 ft at 8 seconds. A chance of showers. .SAT NIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 4 seconds and E 2 ft at 7 seconds. Showers likely in the evening. A chance of showers after midnight. .SUN AND SUN NIGHT...SE winds 5 to 10 kt, becoming SW. Seas around 2 ft. A chance of showers. .MON AND MON NIGHT...W 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. $$ ANZ231-200900- Cape Cod Bay- 405 PM EDT Wed Aug 19 2026 .TONIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt this evening. Seas around 2 ft this evening, then 1 foot or less. Wave Detail: SW 1 foot at 3 seconds and E 1 foot at 4 seconds, becoming SW 1 foot at 2 seconds and S 1 foot at 3 seconds. .THU...W winds around 5 kt, becoming N in the afternoon. Seas 1 foot or less. Wave Detail: W 1 foot at 2 seconds and S 1 foot at 6 seconds. .THU NIGHT...W winds around 5 kt, becoming NW around 5 kt after midnight. Seas 1 foot or less. Wave Detail: E 1 foot at 2 seconds and SW 1 foot at 2 seconds. A chance of showers in the evening. .FRI...NE winds 5 to 10 kt. Seas 1 foot or less, then around 2 ft in the afternoon. Wave Detail: N 1 foot at 2 seconds and SW 1 foot at 4 seconds, becoming N 1 foot at 3 seconds and SE 1 foot at 5 seconds. .FRI NIGHT AND SAT...E winds 5 to 10 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: E 2 ft at 3 seconds and N 1 foot at 3 seconds. A chance of showers. .SAT NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 8 seconds and E 1 foot at 3 seconds. Showers likely. .SUN...S winds 5 to 10 kt. Seas around 2 ft. A chance of showers. .SUN NIGHT THROUGH MON NIGHT...W winds 5 to 10 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-200900- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 NM- 405 PM EDT Wed Aug 19 2026 .TONIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt this evening. Seas 2 to 3 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...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 8 seconds and W 1 foot at 3 seconds. Patchy fog. Vsby 1 to 3 NM, decreasing to 1 NM or less 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 SW 1 foot at 3 seconds. Patchy fog. Showers likely in the evening. A chance of showers and tstms after midnight. Vsby 1 NM or less. .FRI...NE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 8 seconds and N 1 foot at 3 seconds. A chance of showers in the morning. .FRI NIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: NE 2 ft at 4 seconds and E 2 ft at 8 seconds. A chance of showers. .SAT AND SAT NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 5 seconds and E 3 ft at 8 seconds. A chance of showers in the morning, then showers likely. .SUN...S winds around 10 kt. Seas 2 to 3 ft. Showers likely. .SUN NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. .MON AND MON NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 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. $$ ANZ255-200900- Coastal Waters extending out to 25 NM South of Marthas Vineyard and Nantucket- 405 PM EDT Wed Aug 19 2026 .TONIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 3 seconds and S 2 ft at 7 seconds. Patchy fog after midnight with vsby 1 to 3 NM. .THU...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds and W 1 foot at 3 seconds. Patchy fog. Vsby 1 to 3 NM, decreasing to 1 NM or less in the afternoon. .THU NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and SW 1 foot at 3 seconds. Patchy fog. Showers likely in the evening. A chance of showers and tstms after midnight. Vsby 1 NM or less. .FRI...NE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 3 seconds and SE 2 ft at 8 seconds. A chance of showers. .FRI NIGHT...E winds 10 to 15 kt. Seas around 2 ft. Wave Detail: E 2 ft at 3 seconds and E 2 ft at 8 seconds. A chance of showers. .SAT AND SAT NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 5 seconds and E 2 ft at 8 seconds. Showers likely. .SUN...S winds around 10 kt. Seas 2 to 4 ft. Showers likely. .SUN NIGHT...SW winds 10 to 15 kt. Seas 3 to 4 ft. A chance of showers. .MON AND MON NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-200900- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 NM South of Block Island- 405 PM EDT Wed Aug 19 2026 .TONIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 7 seconds and SW 1 foot at 3 seconds. .THU...W winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and W 1 foot at 3 seconds. .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...NE winds 10 to 15 kt. Seas around 2 ft. Wave Detail: N 2 ft at 3 seconds and SE 2 ft at 8 seconds. A chance of showers. .FRI NIGHT...E winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at 4 seconds and SE 2 ft at 9 seconds. A chance of showers. .SAT AND SAT NIGHT...SE winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 5 seconds and E 2 ft at 8 seconds. Showers likely. .SUN...S winds 5 to 10 kt. Seas around 3 ft. Showers likely. .SUN NIGHT THROUGH MON NIGHT...W winds 10 to 15 kt with gusts up to 20 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. $$ ANZ232-200900- Nantucket Sound- 405 PM EDT Wed Aug 19 2026 .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and E 1 foot at 4 seconds. Patchy fog after midnight. .THU...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 1 foot at 2 seconds and SE 1 foot at 6 seconds. .THU NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas around 2 ft in the evening, then 1 foot or less. Wave Detail: SW 1 foot at 4 seconds and E 1 foot at 8 seconds, becoming W 1 foot at 2 seconds and S 1 foot at 5 seconds. A chance of showers in the evening. .FRI...NE winds around 10 kt. Seas around 2 ft. Wave Detail: N 1 foot at 3 seconds and S 1 foot at 5 seconds. A chance of showers. .FRI NIGHT...E winds 10 to 15 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 4 seconds and NW 1 foot at 3 seconds. A chance of showers. .SAT AND SAT NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 4 seconds and NW 1 foot at 4 seconds. Showers likely. .SUN...S winds 10 to 15 kt. Seas around 2 ft. Showers likely. .SUN NIGHT...SW winds 10 to 15 kt. Seas around 2 ft. A chance of showers. .MON AND MON NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-200900- Vineyard Sound- 405 PM EDT Wed Aug 19 2026 .TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 1 foot at 3 seconds and E 1 foot at 4 seconds. Patchy fog after midnight. .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 8 seconds, becoming SW 1 foot at 3 seconds and S 1 foot at 7 seconds. .THU NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas 1 foot or less. Wave Detail: SW 1 foot at 4 seconds and S 1 foot at 7 seconds. A chance of showers. .FRI...NE winds 5 to 10 kt, becoming E in the afternoon. Seas around 2 ft. Wave Detail: NE 1 foot at 2 seconds and W 1 foot at 3 seconds. A chance of showers. .FRI NIGHT...E winds around 10 kt. Seas around 2 ft. Wave Detail: SE 1 foot at 4 seconds and NW 1 foot at 5 seconds. A chance of showers. .SAT AND SAT NIGHT...SE winds 10 to 15 kt. Seas around 2 ft. Wave Detail: E 2 ft at 9 seconds and E 1 foot at 3 seconds. Showers likely. .SUN...S winds 10 to 15 kt. Seas around 2 ft. Showers likely. .SUN NIGHT THROUGH MON NIGHT...W winds 10 to 15 kt with gusts up to 20 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. $$ ANZ234-200900- Buzzards Bay- 405 PM EDT Wed Aug 19 2026 .TONIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt this evening. Seas around 2 ft. Wave Detail: E 1 foot at 4 seconds and SW 1 foot at 4 seconds. Patchy fog after midnight. .THU...SW winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: SW 1 foot at 4 seconds and E 1 foot at 6 seconds. .THU NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas 1 foot or less. Wave Detail: SW 1 foot at 4 seconds and SE 1 foot at 8 seconds. A chance of showers in the evening. .FRI...NE winds 5 to 10 kt, becoming E in the afternoon. Seas 1 foot or less, then around 2 ft in the afternoon. Wave Detail: N 1 foot at 3 seconds and S 1 foot at 5 seconds, becoming E 1 foot at 2 seconds and NW 1 foot at 3 seconds. A chance of showers. .FRI NIGHT...E winds around 10 kt. Seas around 2 ft in the evening, then 1 foot or less. Wave Detail: E 1 foot at 2 seconds and NW 1 foot at 5 seconds, becoming E 1 foot at 2 seconds and N 1 foot at 4 seconds. A chance of showers. .SAT AND SAT NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: E 2 ft at 8 seconds and E 1 foot at 3 seconds. Showers likely. .SUN...S winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Showers likely. .SUN NIGHT THROUGH MON NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-200900- Rhode Island Sound- 405 PM EDT Wed Aug 19 2026 .TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 7 seconds and SW 1 foot at 3 seconds. .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. .THU NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas around 2 ft. Wave Detail: S 2 ft at 8 seconds and SW 1 foot at 3 seconds. A chance of showers. .FRI...NE winds around 10 kt, becoming E in the afternoon. Seas around 2 ft. Wave Detail: E 2 ft at 3 seconds and NW 1 foot at 3 seconds. A chance of showers. .FRI NIGHT...E winds 10 to 15 kt. Seas around 2 ft. Wave Detail: E 2 ft at 4 seconds and N 1 foot at 3 seconds. A chance of showers. .SAT AND SAT NIGHT...SE winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds and E 2 ft at 4 seconds. Showers likely. .SUN...S winds 10 to 15 kt. Seas 2 to 3 ft. Showers likely. .SUN NIGHT THROUGH MON NIGHT...W winds 10 to 15 kt with gusts up to 20 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. $$ ANZ237-200900- Block Island Sound- 405 PM EDT Wed Aug 19 2026 .TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds and SW 1 foot at 3 seconds. .THU...W winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 7 seconds and W 1 foot at 2 seconds. .THU NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and W 1 foot at 2 seconds. A chance of showers. .FRI...NE winds 5 to 10 kt, becoming E in the afternoon. Seas around 2 ft. Wave Detail: E 2 ft at 3 seconds and NW 1 foot at 3 seconds. A chance of showers. .FRI NIGHT...E winds around 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 4 seconds and SE 1 foot at 7 seconds. A chance of showers. .SAT AND SAT NIGHT...E winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds and E 2 ft at 4 seconds. Showers likely. .SUN...S winds 5 to 10 kt. Seas 2 to 3 ft. Showers likely. .SUN NIGHT THROUGH MON NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-200900- Boston Harbor- 405 PM EDT Wed Aug 19 2026 .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. .THU NIGHT...W winds around 5 kt, becoming N after midnight. Waves 1 foot or less. A chance of showers in the evening. .FRI...NE winds 5 to 10 kt, becoming E in the afternoon. Waves 1 foot or less. .FRI NIGHT AND SAT...E winds 5 to 10 kt. Waves around 2 ft. A chance of showers. .SAT NIGHT...NE winds 5 to 10 kt. Waves 1 foot or less. Showers likely in the evening. A chance of showers after midnight. .SUN AND SUN NIGHT...SE winds 5 to 10 kt, becoming SW. Waves 1 foot or less. A chance of showers. .MON AND MON NIGHT...W winds 5 to 10 kt. Waves 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. $$ ANZ236-200900- Narragansett Bay- 405 PM EDT Wed Aug 19 2026 .TONIGHT...SW winds 5 to 10 kt. Waves around 2 ft. .THU...W winds 5 to 10 kt. Waves around 2 ft in the morning, then 1 foot or less. .THU NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Waves 1 foot or less. A chance of showers in the evening. .FRI...NE winds 5 to 10 kt, becoming E in the afternoon. Waves 1 foot or less. A chance of showers in the afternoon. .FRI NIGHT...E winds 5 to 10 kt. Waves 1 foot or less, then around 2 ft after midnight. A chance of showers. .SAT AND SAT NIGHT...E winds 5 to 10 kt. Waves around 2 ft. Showers likely. .SUN AND SUN NIGHT...S winds 5 to 10 kt, becoming SW. Waves around 2 ft. A chance of showers. .MON AND MON NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt. Waves around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ280-200900- Ocean Waters from the Merrimack River to Plymouth from 40 to 60 NM- 405 PM EDT Wed Aug 19 2026 .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 3 ft. Wave Detail: S 3 ft at 7 seconds and SE 3 ft at 8 seconds. .THU...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 8 seconds and W 1 foot at 3 seconds. .THU NIGHT...SW winds around 5 kt, becoming N after midnight. Seas around 2 ft. Wave Detail: S 2 ft at 7 seconds and NW 1 foot at 2 seconds. A chance of showers in the evening. .FRI...NE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: N 2 ft at 3 seconds and SE 2 ft at 8 seconds. .FRI NIGHT AND SAT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds and N 1 foot at 4 seconds. A chance of showers. .SAT NIGHT...SE winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas around 3 ft. Wave Detail: E 3 ft at 7 seconds and SE 1 foot at 13 seconds. Showers likely. .SUN AND SUN NIGHT...S winds 5 to 10 kt, becoming SW 10 to 15 kt with gusts up to 20 kt. Seas around 3 ft. A chance of showers. .MON AND MON NIGHT...SW winds 5 to 10 kt, becoming W 10 to 15 kt with gusts up to 20 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. $$ ANZ281-200900- Ocean Waters from Provincetown to Nantucket from 20 to 60 NM- 405 PM EDT Wed Aug 19 2026 .TONIGHT...S winds 10 to 15 kt with gusts up to 20 kt, becoming SW 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 3 seconds and S 2 ft at 7 seconds. Patchy fog after midnight with vsby 1 NM or less. .THU...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 8 seconds and W 1 foot at 3 seconds. Patchy fog. Vsby 1 NM or less. .THU NIGHT...SW winds around 5 kt, becoming NW after midnight. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and W 1 foot at 3 seconds. Patchy fog. Showers likely in the evening. A chance of showers and tstms after midnight. Vsby 1 NM or less. .FRI...NE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at 8 seconds and N 1 foot at 2 seconds. A chance of showers. .FRI NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at 4 seconds and E 2 ft at 8 seconds. A chance of showers. .SAT AND SAT NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: SE 4 ft at 7 seconds and E 3 ft at 4 seconds. A chance of showers in the morning, then showers likely. .SUN...S winds around 10 kt. Seas 3 to 4 ft. Showers likely. .SUN NIGHT...SW winds around 10 kt with gusts up to 20 kt. Seas 3 to 4 ft. A chance of showers. .MON AND MON NIGHT...W winds around 10 kt. Seas 3 to 4 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ282-200900- Ocean Waters from Marthas Vineyard to Nantucket from 25 to 60 NM- 405 PM EDT Wed Aug 19 2026 .TONIGHT...SW winds around 5 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 3 seconds and S 2 ft at 7 seconds. Patchy fog after midnight with vsby 1 NM or less. .THU...SW winds around 5 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 9 seconds and W 1 foot at 3 seconds. Patchy fog. Vsby 1 NM or less. .THU NIGHT...W winds around 5 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and S 2 ft at 8 seconds. Patchy fog. A chance of tstms. Showers likely in the evening, then a chance of showers after midnight. Vsby 1 NM or less. .FRI...NE winds 5 to 10 kt, becoming E in the afternoon. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 8 seconds and NE 1 foot at 2 seconds. A chance of showers. .FRI NIGHT...E winds around 10 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at 3 seconds and E 2 ft at 8 seconds. Showers likely. .SAT AND SAT NIGHT...S winds around 10 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft at 5 seconds and E 2 ft at 8 seconds. Showers. A chance of tstms through the night. .SUN...SW winds around 10 kt. Seas 3 to 4 ft. Showers likely. .SUN NIGHT...SW winds around 10 kt. Seas 3 to 4 ft. A chance of showers. .MON AND MON NIGHT...W winds around 10 kt. Seas 3 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. $$ ANZ283-200900- Ocean Waters from Montauk NY to Marthas Vineyard from 25 to 60 NM- 405 PM EDT Wed Aug 19 2026 .TONIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 3 seconds and E 2 ft at 6 seconds. .THU...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and W 1 foot at 3 seconds. .THU NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and SW 1 foot at 3 seconds. A chance of showers. .FRI...NE winds 5 to 10 kt, becoming E 10 to 15 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 3 seconds and SE 2 ft at 9 seconds. A chance of showers. .FRI NIGHT...SE winds 10 to 15 kt. Seas around 3 ft. Wave Detail: E 2 ft at 4 seconds and S 2 ft at 5 seconds. Showers likely. .SAT...SE winds around 10 kt. Seas 3 to 5 ft. Wave Detail: SE 3 ft at 5 seconds and SE 2 ft at 8 seconds. A chance of showers in the morning, then showers likely with a chance of tstms in the afternoon. .SAT NIGHT...S winds around 10 kt. Seas 3 to 5 ft. Showers likely. .SUN...S winds 10 to 15 kt. Seas 3 to 4 ft. Showers likely. .SUN NIGHT...SW winds 10 to 15 kt. Seas 3 to 4 ft. A chance of showers. .MON AND MON NIGHT...W winds 10 to 15 kt. Seas 3 to 4 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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