


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
871 FZUS51 KBOX 100204 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 1003 PM EDT Thu Oct 9 2025 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-101500- 1003 PM EDT Thu Oct 9 2025 .Synopsis for Massachusetts and Rhode Island coastal waters... High pressure settles over the northeast tonight before moving into the North Atlantic this weekend. A coastal storm may approach the southern New England waters late this weekend into early next week with the potential for Gales or Storm Force winds. $$ ANZ250-101500- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 1003 PM EDT Thu Oct 9 2025 ...STORM WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH MONDAY EVENING... .OVERNIGHT...N winds 10 to 15 kt. Gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: N 3 ft at 6 seconds and SE 2 ft at 8 seconds. .FRI...N winds around 5 kt, becoming SW in the afternoon. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 5 seconds and SE 1 foot at 9 seconds. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and NE 2 ft at 5 seconds. .SAT...SW winds 5 to 10 kt, becoming S in the afternoon. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and E 1 foot at 4 seconds. .SAT NIGHT...SE winds 5 to 10 kt, becoming E 10 to 15 kt after midnight. Seas around 2 ft. Wave Detail: SE 2 ft at 3 seconds and SW 1 foot at 3 seconds. .SUN...E winds 15 to 20 kt, increasing to 20 to 25 kt in the afternoon. Gusts up to 30 kt. Seas 3 to 5 ft. Wave Detail: E 5 ft at 6 seconds and SE 1 foot at 12 seconds. A chance of showers in the morning, then showers likely in the afternoon with vsby 1 to 3 NM. .SUN NIGHT...E winds 25 to 30 kt. Gusts up to 45 kt after midnight. Seas 5 to 8 ft, building to 9 to 12 ft after midnight. Showers. Vsby 1 to 3 NM. .MON AND MON NIGHT...E winds 30 to 35 kt, becoming NE 25 to 35 kt. Gusts up to 50 kt. Seas 12 to 16 ft. Showers. Vsby 1 to 3 NM. .TUE...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 10 to 14 ft. Showers likely. Vsby 1 to 3 NM. .TUE NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 8 to 11 ft. Showers likely. Vsby 1 to 3 NM. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-101500- Massachusetts Bay and Ipswich Bay- 1003 PM EDT Thu Oct 9 2025 ...STORM WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH MONDAY EVENING... .OVERNIGHT...N winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: N 3 ft at 6 seconds and SE 1 foot at 10 seconds. .FRI...NW winds around 5 kt, becoming S in the afternoon. Seas around 2 ft. Wave Detail: N 2 ft at 4 seconds and SE 1 foot at 10 seconds. .FRI NIGHT...SW winds 10 to 15 kt. Seas around 2 ft. Wave Detail: SW 1 foot at 3 seconds and NE 1 foot at 5 seconds. .SAT...SW winds 5 to 10 kt, becoming S in the afternoon. Seas around 2 ft in the morning, then 1 foot or less. Wave Detail: SW 1 foot at 2 seconds and E 1 foot at 4 seconds, becoming S 1 foot at 3 seconds and E 1 foot at 10 seconds. .SAT NIGHT...SE winds 5 to 10 kt, becoming E 10 to 15 kt after midnight. Seas 1 foot or less. Wave Detail: SE 1 foot at 3 seconds and E 1 foot at 10 seconds. .SUN...E winds 15 to 20 kt, increasing to 20 to 25 kt in the afternoon. Gusts up to 30 kt. Seas 2 to 4 ft. Wave Detail: E 4 ft at 5 seconds and E 1 foot at 11 seconds. A chance of showers in the morning, then showers likely in the afternoon with vsby 1 to 3 NM. .SUN NIGHT...NE winds 25 to 30 kt with gusts up to 40 kt. Seas 4 to 6 ft, building to 6 to 9 ft after midnight. Showers. Vsby 1 to 3 NM. .MON AND MON NIGHT...NE winds 25 to 30 kt with gusts up to 45 kt. Seas 9 to 12 ft. Showers. Vsby 1 to 3 NM. .TUE...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 7 to 10 ft. Showers likely. Vsby 1 to 3 NM. .TUE NIGHT...N winds 15 to 20 kt with gusts up to 25 kt. Seas 7 to 10 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. $$ ANZ231-101500- Cape Cod Bay- 1003 PM EDT Thu Oct 9 2025 ...STORM WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH MONDAY EVENING... .OVERNIGHT...N winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: N 3 ft at 5 seconds and SE 1 foot at 9 seconds. .FRI...NE winds around 5 kt, becoming S in the afternoon. Seas around 2 ft. Wave Detail: N 2 ft at 5 seconds and SE 1 foot at 9 seconds. .FRI NIGHT...SW winds 5 to 10 kt. Seas around 2 ft in the evening, then 1 foot or less. Wave Detail: NE 2 ft at 5 seconds and W 1 foot at 3 seconds, becoming SW 1 foot at 3 seconds and NE 1 foot at 5 seconds. .SAT...S winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: SW 1 foot at 3 seconds and NE 1 foot at 5 seconds. .SAT NIGHT...SE winds 5 to 10 kt, becoming E 10 to 15 kt after midnight. Seas 1 foot or less, then around 2 ft after midnight. Wave Detail: S 1 foot at 2 seconds and SE 1 foot at 10 seconds, becoming E 1 foot at 2 seconds and S 1 foot at 2 seconds. A chance of showers after midnight. .SUN...E winds 15 to 20 kt, increasing to 25 to 30 kt in the afternoon. Seas 2 to 4 ft, building to 4 to 6 ft in the afternoon. Wave Detail: E 3 ft at 3 seconds and SE 1 foot at 11 seconds, becoming E 4 ft at 4 seconds and SE 2 ft at 11 seconds. A chance of showers in the morning, then showers likely in the afternoon with vsby 1 to 3 NM. .SUN NIGHT...E winds 25 to 30 kt with gusts up to 45 kt. Seas 5 to 7 ft. Showers. Vsby 1 to 3 NM. .MON...E winds 30 to 35 kt with gusts up to 50 kt. Seas 6 to 9 ft. Showers. Vsby 1 to 3 NM. .MON NIGHT...NE winds 25 to 30 kt with gusts up to 40 kt. Seas 5 to 8 ft. Showers. Vsby 1 to 3 NM. .TUE AND TUE NIGHT...NE winds 20 to 25 kt, becoming N 15 to 20 kt. Gusts up to 30 kt. Seas 4 to 6 ft. Showers likely. Vsby 1 to 3 NM. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-101500- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 1003 PM EDT Thu Oct 9 2025 ...STORM WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH MONDAY EVENING... .OVERNIGHT...N winds 10 to 15 kt. Gusts up to 20 kt. Seas 3 to 5 ft. Wave Detail: N 4 ft at 7 seconds and SE 2 ft at 8 seconds. .FRI...NE winds 5 to 10 kt, becoming SE in the afternoon. Seas 2 to 4 ft. Wave Detail: N 3 ft at 5 seconds and SE 1 foot at 8 seconds. .FRI NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 6 seconds and SE 1 foot at 10 seconds. .SAT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 1 foot at 3 seconds and NE 1 foot at 5 seconds. .SAT NIGHT...E winds 5 to 10 kt, increasing to 15 to 20 kt after midnight. Seas 2 to 3 ft. Wave Detail: E 3 ft at 4 seconds and SE 2 ft at 11 seconds. .SUN...E winds 20 to 25 kt, increasing to 25 to 30 kt in the afternoon. Seas 3 to 5 ft, building to 5 to 7 ft in the afternoon. Wave Detail: E 5 ft at 5 seconds and SE 2 ft at 12 seconds, becoming E 7 ft at 6 seconds and SE 7 ft at 12 seconds. A chance of showers in the morning, then showers likely in the afternoon with vsby 1 to 3 NM. .SUN NIGHT...E winds 25 to 35 kt, becoming 30 to 35 kt after midnight. Gusts up to 45 kt. Seas 7 to 10 ft, building to 10 to 14 ft after midnight. S and E of Nantucket, seas 10 to 14 ft, building to 13 to 17 ft after midnight. Showers. Vsby 1 to 3 NM. .MON AND MON NIGHT...E winds 30 to 35 kt, diminishing to 25 to 30 kt. Gusts up to 45 kt. Seas 12 to 16 ft. Showers. Vsby 1 to 3 NM. .TUE...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 10 to 14 ft. Showers likely. Vsby 1 to 3 NM. .TUE NIGHT...NE winds 15 to 20 kt. Seas 8 to 11 ft. Showers likely. 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. $$ ANZ255-101500- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 1003 PM EDT Thu Oct 9 2025 ...STORM WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH MONDAY EVENING... .OVERNIGHT...N winds 10 to 15 kt. Gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: NE 3 ft at 5 seconds and SE 2 ft at 8 seconds. .FRI...NE winds 5 to 10 kt, becoming SE in the afternoon. Seas 2 to 3 ft. Wave Detail: N 2 ft at 4 seconds and SE 1 foot at 8 seconds. .FRI NIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 5 seconds and SW 1 foot at 2 seconds. .SAT...SE winds 5 to 10 kt, becoming E 10 to 15 kt in the afternoon. Seas around 2 ft. Wave Detail: E 2 ft at 5 seconds and SW 1 foot at 3 seconds. .SAT NIGHT...E winds 10 to 15 kt, increasing to 20 to 25 kt after midnight. Seas 2 to 4 ft. Wave Detail: E 4 ft at 5 seconds and SE 2 ft at 10 seconds. A chance of showers after midnight. .SUN...E winds 25 to 35 kt. Seas 5 to 7 ft, building to 6 to 9 ft in the afternoon. Wave Detail: E 7 ft at 6 seconds and SE 4 ft at 10 seconds, becoming E 8 ft at 6 seconds and SE 8 ft at 12 seconds. A chance of showers in the morning, then showers likely in the afternoon. Vsby 1 to 3 NM. .SUN NIGHT...E winds 35 to 40 kt with gusts up to 45 kt. Seas 9 to 13 ft, building to 12 to 16 ft after midnight. Showers. Vsby 1 to 3 NM. .MON...E winds 30 to 40 kt with gusts up to 50 kt. Seas 12 to 16 ft. Showers. Vsby 1 to 3 NM. .MON NIGHT...E winds 25 to 35 kt with gusts up to 40 kt. Seas 10 to 14 ft. Showers. Vsby 1 to 3 NM. .TUE...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 8 to 11 ft. Showers likely. Vsby 1 to 3 NM. .TUE NIGHT...N winds 20 to 25 kt. Seas 6 to 9 ft. Showers likely. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-101500- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 1003 PM EDT Thu Oct 9 2025 ...STORM WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH MONDAY EVENING... .OVERNIGHT...NE winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: W 2 ft at 4 seconds and NE 2 ft at 5 seconds. .FRI...NE winds 5 to 10 kt, becoming SE in the afternoon. Seas around 2 ft. Wave Detail: N 2 ft at 4 seconds and SE 2 ft at 8 seconds. .FRI NIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 1 foot at 2 seconds and E 1 foot at 4 seconds. .SAT...SE winds 5 to 10 kt, becoming E 10 to 15 kt in the afternoon. Seas around 2 ft. Wave Detail: SE 2 ft at 4 seconds and SE 2 ft at 9 seconds. .SAT NIGHT...E winds 15 to 20 kt, increasing to 20 to 25 kt with gusts up to 30 kt after midnight. Seas 2 to 3 ft, building to 3 to 5 ft after midnight. Wave Detail: E 3 ft at 4 seconds and SE 2 ft at 9 seconds, becoming E 5 ft at 5 seconds and SE 4 ft at 10 seconds. A chance of showers after midnight. .SUN...E winds 25 to 30 kt, becoming NE 30 to 40 kt in the afternoon. Seas 6 to 9 ft, building to 8 to 11 ft in the afternoon. Wave Detail: E 8 ft at 7 seconds and SE 5 ft at 9 seconds, becoming E 9 ft at 7 seconds and SE 9 ft at 10 seconds. Showers. Vsby 1 to 3 NM. .SUN NIGHT...NE winds 35 to 40 kt with gusts up to 50 kt. Seas 11 to 15 ft, building to 14 to 19 ft after midnight. Showers. Vsby 1 to 3 NM. .MON...E winds 35 to 40 kt with gusts up to 50 kt. Seas 15 to 19 ft. Showers. Vsby 1 to 3 NM. .MON NIGHT...NE winds 30 to 35 kt with gusts up to 40 kt. Seas 12 to 17 ft. Showers. Vsby 1 to 3 NM. .TUE...NE winds 25 to 30 kt. Seas 9 to 13 ft. Showers likely. Vsby 1 to 3 NM. .TUE NIGHT...N winds 20 to 25 kt. Seas 6 to 9 ft. Showers likely. 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. $$ ANZ232-101500- Nantucket Sound- 1003 PM EDT Thu Oct 9 2025 ...STORM WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH MONDAY EVENING... .OVERNIGHT...N winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: N 2 ft at 5 seconds and SE 1 foot at 8 seconds. .FRI...NE winds 5 to 10 kt, becoming SE in the afternoon. Seas around 2 ft. Wave Detail: N 1 foot at 4 seconds and SE 1 foot at 9 seconds. .FRI NIGHT...S winds 5 to 10 kt. Seas around 2 ft in the evening, then 1 foot or less. Wave Detail: S 1 foot at 2 seconds and NE 1 foot at 5 seconds, becoming SW 1 foot at 2 seconds and E 1 foot at 5 seconds. .SAT...S winds 5 to 10 kt, becoming SE in the afternoon. Seas 1 foot or less. Wave Detail: S 1 foot at 3 seconds and E 1 foot at 5 seconds. .SAT NIGHT...E winds 10 to 15 kt, increasing to 20 to 25 kt after midnight. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 4 seconds and SE 1 foot at 10 seconds. A chance of showers after midnight. .SUN...E winds 20 to 25 kt, increasing to 25 to 35 kt in the afternoon. Seas 3 to 4 ft, building to 4 to 6 ft in the afternoon. Wave Detail: E 4 ft at 4 seconds and SE 1 foot at 10 seconds, becoming E 6 ft at 5 seconds and SE 2 ft at 12 seconds. A chance of showers in the morning, then showers likely in the afternoon with vsby 1 to 3 NM. .SUN NIGHT...E winds 30 to 40 kt with gusts up to 45 kt. Seas 5 to 7 ft, building to 6 to 9 ft after midnight. Showers. Vsby 1 to 3 NM. .MON...E winds 30 to 40 kt with gusts up to 45 kt. Seas 7 to 10 ft. Showers. Vsby 1 to 3 NM. .MON NIGHT...E winds 25 to 35 kt with gusts up to 40 kt. Seas 6 to 9 ft. Showers. Vsby 1 to 3 NM. .TUE AND TUE NIGHT...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to 7 ft. Showers likely. Vsby 1 to 3 NM. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-101500- Vineyard Sound- 1003 PM EDT Thu Oct 9 2025 ...STORM WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH MONDAY EVENING... .OVERNIGHT...N winds 10 to 15 kt. Seas around 2 ft. Wave Detail: NE 1 foot at 3 seconds and W 1 foot at 5 seconds. .FRI...NE winds 5 to 10 kt, becoming S in the afternoon. Seas 1 foot or less. Wave Detail: NE 1 foot at 3 seconds and NW 1 foot at 4 seconds. .FRI NIGHT...S winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: SW 1 foot at 2 seconds and E 1 foot at 4 seconds. .SAT...SE winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: SW 1 foot at 3 seconds and E 1 foot at 5 seconds. .SAT NIGHT...E winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Seas 2 to 3 ft. Wave Detail: E 2 ft at 3 seconds and SE 2 ft at 10 seconds. A chance of showers after midnight. .SUN...E winds 20 to 25 kt, becoming NE 25 to 30 kt in the afternoon. Seas 2 to 4 ft, building to 4 to 6 ft in the afternoon. Wave Detail: E 3 ft at 4 seconds and SE 3 ft at 10 seconds, becoming NE 4 ft at 5 seconds and SE 4 ft at 12 seconds. A chance of showers in the morning, then showers likely in the afternoon. Vsby 1 to 3 NM. .SUN NIGHT...NE winds 30 to 35 kt with gusts up to 45 kt. Seas 6 to 9 ft. Showers. Vsby 1 to 3 NM. .MON...E winds 30 to 35 kt with gusts up to 45 kt. Seas 7 to 10 ft. Showers. Vsby 1 to 3 NM. .MON NIGHT...NE winds 25 to 30 kt with gusts up to 35 kt. Seas 6 to 9 ft. Showers. Vsby 1 to 3 NM. .TUE...NE winds 20 to 25 kt. Seas 4 to 6 ft. Showers likely. Vsby 1 to 3 NM. .TUE NIGHT...N winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Showers likely. 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. $$ ANZ234-101500- Buzzards Bay- 1003 PM EDT Thu Oct 9 2025 ...STORM WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH MONDAY EVENING... .OVERNIGHT...N winds 10 to 15 kt, diminishing to 5 to 10 kt. Seas 1 foot or less. Wave Detail: NE 1 foot at 3 seconds and W 1 foot at 5 seconds. .FRI...NE winds 5 to 10 kt, becoming S in the afternoon. Seas 1 foot or less. Wave Detail: N 1 foot at 3 seconds and SE 1 foot at 8 seconds. .FRI NIGHT...S winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: SW 1 foot at 2 seconds and E 1 foot at 4 seconds. .SAT...SE winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: SW 1 foot at 3 seconds and E 1 foot at 4 seconds. .SAT NIGHT...E winds around 10 kt, increasing to 15 to 20 kt after midnight. Seas 1 foot or less, then 2 to 3 ft after midnight. Wave Detail: SE 1 foot at 3 seconds and SE 1 foot at 10 seconds, becoming E 2 ft at 3 seconds and SE 1 foot at 10 seconds. A chance of showers after midnight. .SUN...NE winds 20 to 25 kt, increasing to 25 to 30 kt in the afternoon. Seas 2 to 4 ft, building to 4 to 6 ft in the afternoon. Wave Detail: E 3 ft at 4 seconds and SE 2 ft at 10 seconds, becoming NE 4 ft at 4 seconds and SE 3 ft at 12 seconds. A chance of showers in the morning, then showers likely in the afternoon with vsby 1 to 3 NM. .SUN NIGHT...NE winds 30 to 35 kt with gusts up to 45 kt. Seas 4 to 6 ft. Showers. Vsby 1 to 3 NM. .MON...E winds 30 to 35 kt with gusts up to 45 kt. Seas 5 to 7 ft. Showers. Vsby 1 to 3 NM. .MON NIGHT...NE winds 25 to 30 kt with gusts up to 40 kt. Seas 4 to 6 ft. Showers. Vsby 1 to 3 NM. .TUE...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to 5 ft. Showers likely. Vsby 1 to 3 NM. .TUE NIGHT...N winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Showers likely. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-101500- Rhode Island Sound- 1003 PM EDT Thu Oct 9 2025 ...STORM WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH MONDAY EVENING... .OVERNIGHT...N winds 10 to 15 kt. Seas around 2 ft. Wave Detail: NE 2 ft at 3 seconds and SE 2 ft at 8 seconds. .FRI...NE winds 5 to 10 kt, becoming SE in the afternoon. Seas around 2 ft. Wave Detail: N 1 foot at 4 seconds and SE 1 foot at 8 seconds. .FRI NIGHT...S winds 5 to 10 kt. Seas 1 foot or less, then around 2 ft after midnight. Wave Detail: SE 1 foot at 3 seconds and SE 1 foot at 9 seconds, becoming S 1 foot at 3 seconds and E 1 foot at 4 seconds. .SAT...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 4 seconds and SE 1 foot at 9 seconds. .SAT NIGHT...E winds 10 to 15 kt, increasing to 20 to 25 kt after midnight. Seas 2 to 4 ft. Wave Detail: E 4 ft at 5 seconds and SE 3 ft at 11 seconds. A chance of showers after midnight. .SUN...NE winds 25 to 35 kt. Seas 4 to 6 ft, building to 6 to 9 ft in the afternoon. Wave Detail: E 6 ft at 6 seconds and SE 5 ft at 13 seconds, becoming SE 9 ft at 9 seconds and E 5 ft at 5 seconds. A chance of showers in the morning, then showers likely in the afternoon. Vsby 1 to 3 NM. .SUN NIGHT...NE winds 30 to 40 kt with gusts up to 45 kt. Seas 8 to 11 ft, building to 9 to 13 ft after midnight. Showers. Vsby 1 to 3 NM. .MON...E winds 30 to 40 kt with gusts up to 45 kt. Seas 9 to 13 ft. Showers. Vsby 1 to 3 NM. .MON NIGHT...NE winds 25 to 30 kt with gusts up to 35 kt. Seas 9 to 12 ft. Showers. Vsby 1 to 3 NM. .TUE AND TUE NIGHT...NE winds 20 to 25 kt, becoming N 15 to 20 kt. Gusts up to 30 kt. Seas 5 to 8 ft. Showers likely. Vsby 1 to 3 NM. 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. $$ ANZ237-101500- Block Island Sound- 1003 PM EDT Thu Oct 9 2025 ...STORM WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH MONDAY EVENING... .OVERNIGHT...NE winds around 10 kt. Seas around 2 ft. Wave Detail: NE 2 ft at 4 seconds and S 2 ft at 7 seconds. .FRI...NE winds 5 to 10 kt, becoming SE in the afternoon. Seas around 2 ft. Wave Detail: N 1 foot at 4 seconds and SE 1 foot at 8 seconds. .FRI NIGHT...S winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: SE 1 foot at 3 seconds and SE 1 foot at 8 seconds. .SAT...SE winds around 5 kt, becoming E in the afternoon. Seas 1 foot or less, then around 2 ft in the afternoon. Wave Detail: SE 1 foot at 3 seconds and SE 1 foot at 9 seconds, becoming SE 2 ft at 3 seconds and SE 1 foot at 9 seconds. .SAT NIGHT...E winds 10 to 15 kt, increasing to 20 to 25 kt after midnight. Seas 2 to 4 ft. Wave Detail: E 4 ft at 5 seconds and SE 3 ft at 12 seconds. A chance of showers. .SUN...NE winds 25 to 30 kt with gusts up to 40 kt. Seas 4 to 6 ft, building to 6 to 9 ft in the afternoon. Wave Detail: E 6 ft at 6 seconds and SE 4 ft at 12 seconds, becoming SE 9 ft at 9 seconds and E 6 ft at 6 seconds. Showers. Vsby 1 to 3 NM. .SUN NIGHT...NE winds 30 to 40 kt with gusts up to 45 kt. Seas 8 to 11 ft, building to 9 to 13 ft after midnight. Showers. Vsby 1 to 3 NM. .MON...NE winds 30 to 35 kt with gusts up to 50 kt. Seas 11 to 15 ft. Showers. Vsby 1 to 3 NM. .MON NIGHT...NE winds 25 to 30 kt with gusts up to 35 kt. Seas 9 to 13 ft. Showers. Vsby 1 to 3 NM. .TUE...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 6 to 9 ft. Showers likely. .TUE NIGHT...N winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 7 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-101500- Boston Harbor- 1003 PM EDT Thu Oct 9 2025 ...GALE WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH MONDAY EVENING... .OVERNIGHT...N winds 5 to 10 kt. Waves 1 foot or less. .FRI...NW winds around 5 kt, becoming S in the afternoon. Waves 1 foot or less. .FRI NIGHT...SW winds 5 to 10 kt. Waves 1 foot or less. .SAT...SW winds around 5 kt, becoming S in the afternoon. Waves 1 foot or less. .SAT NIGHT...SE winds 5 to 10 kt, becoming E after midnight. Waves 1 foot or less. .SUN AND SUN NIGHT...NE winds 25 to 30 kt with gusts up to 35 kt. Waves 2 to 3 ft. A chance of showers in the morning, then showers. Vsby 1 to 3 NM. .MON THROUGH TUE...NE winds 25 to 30 kt with gusts up to 40 kt. Waves 2 to 3 ft, except 5 to 7 ft at the outer harbor entrance. Showers. Vsby 1 to 3 NM. .TUE NIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft, except 3 to 5 ft at the outer harbor entrance. 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. $$ ANZ236-101500- Narragansett Bay- 1003 PM EDT Thu Oct 9 2025 ...GALE WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH MONDAY EVENING... .OVERNIGHT...N winds 5 to 10 kt. Waves around 2 ft. .FRI...NE winds 5 to 10 kt, becoming S in the afternoon. Waves 1 foot or less. .FRI NIGHT...S winds 5 to 10 kt. Waves 1 foot or less. .SAT...E winds around 5 kt, becoming SE in the afternoon. Waves 1 foot or less. .SAT NIGHT...E winds 5 to 10 kt, becoming NE 10 to 15 kt with gusts up to 20 kt after midnight. Waves around 2 ft. A chance of showers after midnight. .SUN...NE winds 15 to 20 kt, increasing to 20 to 25 kt in the afternoon. Gusts up to 30 kt. Waves 2 to 3 ft. At the bay entrance, waves 2 to 4 ft, building to 4 to 6 ft in the afternoon. A chance of showers in the morning, then showers likely in the afternoon with vsby 1 to 3 NM. .SUN NIGHT...NE winds 25 to 30 kt with gusts up to 40 kt. Waves around 3 ft, except 5 to 8 ft at the bay entrance. Showers. Vsby 1 to 3 NM. .MON THROUGH TUE...N winds 25 to 30 kt with gusts up to 40 kt. Waves 2 to 3 ft, except 5 to 7 ft at the bay entrance. Showers. Vsby 1 to 3 NM. .TUE NIGHT...N winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to 3 ft, except 4 to 6 ft at the bay entrance. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ For the latest updates...please visit our webpage at www.weather.gov/boston You can follow us on Facebook at www.facebook.com/NWSBoston You can follow us on Twitter at @NWSBoston