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
093 FZUS51 KBOX 100605 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 104 AM EST Wed Dec 10 2025 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-101900- 104 AM EST Wed Dec 10 2025 .Synopsis for Massachusetts and Rhode Island coastal waters... High pres will continue moving east of the waters tonight. Low pres then tracks well to our north Wed resulting in gale force SW wind gusts. A cold front then crosses the waters late Wed night into early Thu followed by another pulse of gale force W wind gusts Thu into part of Fri. Weak high pres builds over the waters Fri night, then low pres tracks in the vicinity of the southern waters late Sat night into Sun. $$ ANZ250-101900- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 104 AM EST Wed Dec 10 2025 ...GALE WARNING IN EFFECT THROUGH LATE TONIGHT... .REST OF TONIGHT...SW winds around 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. Wave Detail: SW 4 ft at 4 seconds and SE 2 ft at 9 seconds. A chance of rain. .WED...SW winds 20 to 25 kt with gusts up to 35 kt. Seas 4 to 6 ft. Wave Detail: S 5 ft at 5 seconds and SE 3 ft at 9 seconds. A chance of rain in the afternoon. .WED NIGHT...SW winds 20 to 25 kt with gusts up to 35 kt. Seas 5 to 7 ft. Wave Detail: S 5 ft at 6 seconds. Patchy fog. A chance of rain. .THU...W winds 20 to 25 kt, increasing to 25 to 30 kt in the afternoon. Gusts up to 40 kt. Seas 5 to 7 ft. Wave Detail: W 7 ft at 6 seconds and SE 3 ft at 11 seconds. .THU NIGHT...W winds 25 to 30 kt with gusts up to 40 kt. Seas 5 to 7 ft. Wave Detail: W 7 ft at 6 seconds and SE 2 ft at 10 seconds. .FRI...W winds 25 to 30 kt, diminishing to 20 to 25 kt in the afternoon. Seas 4 to 6 ft. Wave Detail: W 6 ft at 6 seconds and SE 1 foot at 10 seconds. .FRI NIGHT...W winds 20 to 25 kt, diminishing to 15 to 20 kt after midnight. Gusts up to 30 kt. Seas 4 to 6 ft, subsiding to 2 to 4 ft after midnight. .SAT...W winds 15 to 20 kt. Seas 2 to 4 ft. A chance of snow. .SAT NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. A chance of snow. .SUN...W winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to 5 ft. A chance of snow and rain. Vsby 1 NM or less. .SUN NIGHT...NW winds 25 to 30 kt. Seas 5 to 7 ft. A chance of snow. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-101900- Massachusetts Bay and Ipswich Bay- 104 AM EST Wed Dec 10 2025 ...GALE WARNING IN EFFECT THROUGH LATE TONIGHT... .REST OF TONIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 4 seconds and E 1 foot at 9 seconds. A chance of snow with a slight chance of rain. .WED...SW winds 15 to 20 kt, becoming S 20 to 25 kt in the afternoon. Gusts up to 30 kt. Seas 2 to 3 ft, building to 3 to 5 ft in the afternoon. Wave Detail: S 3 ft at 4 seconds and SE 1 foot at 9 seconds, becoming S 4 ft at 5 seconds and SE 2 ft at 9 seconds. A chance of rain in the afternoon. .WED NIGHT...SW winds 20 to 25 kt, diminishing to 15 to 20 kt after midnight. Gusts up to 30 kt. Seas 3 to 5 ft. Wave Detail: S 3 ft at 5 seconds and SE 2 ft at 8 seconds. Patchy fog. A chance of rain. .THU...W winds 20 to 25 kt with gusts up to 35 kt. Seas 3 to 4 ft. Wave Detail: W 4 ft at 4 seconds and SE 1 foot at 4 seconds. .THU NIGHT THROUGH FRI NIGHT...W winds 25 to 30 kt with gusts up to 35 kt. Seas 2 to 4 ft. Wave Detail: W 4 ft at 4 seconds and SE 1 foot at 11 seconds. .SAT...W winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: W 2 ft at 3 seconds. .SAT NIGHT AND SUN...W winds 15 to 20 kt, increasing to 20 to 25 kt. Seas 2 to 3 ft. A chance of snow. .SUN NIGHT...NW winds 25 to 30 kt. Seas 3 to 5 ft. A chance of snow. 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. $$ ANZ231-101900- Cape Cod Bay- 104 AM EST Wed Dec 10 2025 ...GALE WARNING IN EFFECT THROUGH LATE TONIGHT... .REST OF TONIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 3 seconds and E 1 foot at 4 seconds. A slight chance of rain. .WED...SW winds 15 to 20 kt, becoming S 20 to 25 kt in the afternoon. Gusts up to 30 kt. Seas 2 to 4 ft. Wave Detail: S 3 ft at 4 seconds and SE 2 ft at 9 seconds. A chance of rain in the afternoon. .WED NIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and S 3 ft at 8 seconds. Patchy fog. A chance of rain. .THU...W winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to 4 ft. Wave Detail: W 4 ft at 5 seconds and S 2 ft at 9 seconds. .THU NIGHT AND FRI...W winds 25 to 30 kt with gusts up to 35 kt. Seas 3 to 5 ft. Wave Detail: W 5 ft at 5 seconds and S 2 ft at 10 seconds. .FRI NIGHT...W winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: W 3 ft at 4 seconds and SE 1 foot at 10 seconds. .SAT...W winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. A chance of rain. .SAT NIGHT...W winds around 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of snow. .SUN...W winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. A chance of rain and snow. .SUN NIGHT...NW winds 25 to 30 kt. Seas 3 to 5 ft. A chance of snow. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-101900- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 104 AM EST Wed Dec 10 2025 ...GALE WARNING IN EFFECT THROUGH LATE TONIGHT... .REST OF TONIGHT...SW winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to 5 ft. Wave Detail: SW 5 ft at 5 seconds and NE 1 foot at 5 seconds. A slight chance of rain. .WED...SW winds 15 to 20 kt, becoming S 20 to 25 kt in the afternoon. Gusts up to 30 kt. Seas 3 to 5 ft, building to 5 to 7 ft in the afternoon. Wave Detail: SW 5 ft at 5 seconds and E 1 foot at 9 seconds, becoming S 6 ft at 6 seconds and SE 1 foot at 9 seconds. .WED NIGHT...SW winds 20 to 25 kt, becoming W 15 to 20 kt after midnight. Gusts up to 35 kt. Seas 5 to 7 ft, except 8 to 11 ft S and E of Nantucket. Wave Detail: SW 6 ft at 6 seconds and S 5 ft at 9 seconds. A chance of rain. Patchy fog after midnight. .THU...W winds 20 to 25 kt, increasing to 25 to 30 kt in the afternoon. Seas 5 to 8 ft. Wave Detail: W 7 ft at 6 seconds and S 6 ft at 10 seconds. .THU NIGHT AND FRI...W winds 25 to 30 kt with gusts up to 35 kt. Seas 5 to 7 ft. Wave Detail: W 7 ft at 6 seconds and S 4 ft at 10 seconds. .FRI NIGHT...W winds 20 to 25 kt with gusts up to 30 kt, diminishing to 15 to 20 kt after midnight. Seas 4 to 6 ft. Wave Detail: W 6 ft at 6 seconds and SE 1 foot at 10 seconds. .SAT...W winds 15 to 20 kt. Seas 3 to 5 ft. A chance of rain. .SAT NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. A chance of rain. .SUN...W winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to 5 ft. Rain likely with a chance of snow. Vsby 1 NM or less. .SUN NIGHT...NW winds 25 to 30 kt. Seas 5 to 7 ft. A chance of snow. Vsby 1 NM 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. $$ ANZ255-101900- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 104 AM EST Wed Dec 10 2025 ...GALE WARNING IN EFFECT THROUGH LATE TONIGHT... .REST OF TONIGHT...SW winds 25 to 30 kt. Seas 4 to 6 ft. Wave Detail: SW 6 ft at 7 seconds and NE 1 foot at 5 seconds. .WED...SW winds 20 to 25 kt, becoming S 25 to 30 kt in the afternoon. Seas 5 to 7 ft, building to 7 to 10 ft in the afternoon. Wave Detail: SW 7 ft at 7 seconds and E 1 foot at 9 seconds, becoming SW 10 ft at 8 seconds and SE 2 ft at 9 seconds. .WED NIGHT...SW winds 25 to 30 kt with gusts up to 35 kt. Seas 8 to 11 ft. Wave Detail: SW 11 ft at 10 seconds. A chance of rain. .THU...W winds 20 to 25 kt, increasing to 25 to 30 kt in the afternoon. Seas 7 to 10 ft. Wave Detail: SW 10 ft at 10 seconds. .THU NIGHT AND FRI...W winds 25 to 30 kt with gusts up to 40 kt. Seas 6 to 9 ft. Wave Detail: SW 9 ft at 9 seconds and SE 2 ft at 10 seconds. .FRI NIGHT...W winds 20 to 25 kt, diminishing to 15 to 20 kt after midnight. Seas 5 to 7 ft. Wave Detail: W 7 ft at 7 seconds and S 1 foot at 10 seconds. .SAT...W winds 20 to 25 kt. Seas 4 to 6 ft. A chance of rain. .SAT NIGHT...W winds 20 to 25 kt. Seas 5 to 8 ft. A chance of rain. .SUN...W winds 25 to 30 kt. Seas 4 to 6 ft. Rain likely. .SUN NIGHT...NW winds 30 to 35 kt with gusts up to 40 kt. Seas 5 to 8 ft. A chance of snow. Vsby 1 to 3 NM. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-101900- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 104 AM EST Wed Dec 10 2025 ...GALE WARNING IN EFFECT THROUGH LATE TONIGHT... .REST OF TONIGHT...SW winds 25 to 30 kt with gusts up to 35 kt. Seas 5 to 8 ft. Wave Detail: SW 8 ft at 7 seconds and E 1 foot at 9 seconds. .WED...SW winds 25 to 30 kt with gusts up to 35 kt. Seas 7 to 8 ft, building to 9 to 12 ft in the afternoon. Wave Detail: SW 8 ft at 7 seconds and SE 1 foot at 9 seconds, becoming SW 11 ft at 8 seconds and SE 10 ft at 9 seconds. A chance of rain in the afternoon. .WED NIGHT...SW winds 25 to 30 kt with gusts up to 40 kt. Seas 9 to 12 ft. Wave Detail: SW 12 ft at 8 seconds. Rain likely, mainly in the evening. .THU...W winds 25 to 30 kt with gusts up to 35 kt. Seas 7 to 10 ft. Wave Detail: W 10 ft at 9 seconds and SW 10 ft at 9 seconds. .THU NIGHT AND FRI...W winds 25 to 30 kt with gusts up to 40 kt. Seas 5 to 8 ft. Wave Detail: W 8 ft at 8 seconds and SE 4 ft at 10 seconds. .FRI NIGHT...W winds 20 to 25 kt, diminishing to 15 to 20 kt after midnight. Seas 4 to 6 ft. Wave Detail: W 6 ft at 7 seconds. .SAT...W winds 20 to 25 kt. Seas 4 to 6 ft. A chance of rain. .SAT NIGHT...W winds 20 to 25 kt. Seas 5 to 7 ft. A chance of rain. .SUN...W winds 25 to 30 kt. Seas 4 to 6 ft. A chance of rain. .SUN NIGHT...NW winds 25 to 35 kt with gusts up to 40 kt. Seas 5 to 7 ft. A chance of snow. 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. $$ ANZ232-101900- Nantucket Sound- 104 AM EST Wed Dec 10 2025 ...GALE WARNING IN EFFECT THROUGH LATE TONIGHT... .REST OF TONIGHT...SW winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to 4 ft. Wave Detail: SW 4 ft at 5 seconds and NE 1 foot at 5 seconds. A slight chance of rain. .WED...SW winds 15 to 20 kt, becoming S 20 to 25 kt in the afternoon. Gusts up to 30 kt. Seas 3 to 4 ft, building to 4 to 6 ft in the afternoon. Wave Detail: SW 4 ft at 5 seconds and SE 1 foot at 9 seconds, becoming SW 5 ft at 5 seconds and SE 2 ft at 9 seconds. A chance of rain in the afternoon. .WED NIGHT...SW winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to 6 ft. Wave Detail: SW 5 ft at 5 seconds and S 3 ft at 9 seconds. A chance of rain. .THU...W winds 20 to 25 kt with gusts up to 35 kt. Seas 3 to 5 ft. Wave Detail: W 4 ft at 4 seconds and S 3 ft at 10 seconds. .THU NIGHT AND FRI...W winds 25 to 30 kt with gusts up to 35 kt. Seas 3 to 5 ft. Wave Detail: W 5 ft at 5 seconds and S 2 ft at 10 seconds. .FRI NIGHT...W winds 20 to 25 kt, diminishing to 10 to 15 kt after midnight. Seas 2 to 4 ft. Wave Detail: W 4 ft at 5 seconds and S 1 foot at 10 seconds. .SAT...W winds 15 to 20 kt. Seas 2 to 4 ft. A chance of rain. .SAT NIGHT...W winds 15 to 20 kt. Seas 3 to 5 ft. A chance of rain. .SUN...W winds 20 to 25 kt with gusts up to 30 kt. Seas 2 to 4 ft. A chance of rain and snow. .SUN NIGHT...NW winds 25 to 30 kt. Seas 3 to 4 ft. A chance of snow. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-101900- Vineyard Sound- 104 AM EST Wed Dec 10 2025 ...GALE WARNING IN EFFECT THROUGH LATE TONIGHT... .REST OF TONIGHT...SW winds 25 to 30 kt. Seas 3 to 5 ft. Wave Detail: SW 5 ft at 7 seconds and SE 1 foot at 9 seconds. A slight chance of rain. .WED...SW winds 20 to 25 kt, becoming S 25 to 30 kt in the afternoon. Seas 4 to 6 ft, building to 5 to 8 ft in the afternoon. Wave Detail: SW 6 ft at 7 seconds and SE 1 foot at 9 seconds, becoming SW 7 ft at 7 seconds and S 7 ft at 9 seconds. A chance of rain in the afternoon. .WED NIGHT...SW winds 25 to 30 kt, becoming W 20 to 25 kt after midnight. Seas 6 to 9 ft, subsiding to 5 to 7 ft after midnight. Wave Detail: SW 8 ft at 8 seconds, becoming SW 7 ft at 8 seconds. A chance of rain. .THU...W winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to 7 ft, subsiding to 4 to 5 ft in the afternoon. Wave Detail: SW 6 ft at 9 seconds and W 3 ft at 6 seconds, becoming W 5 ft at 7 seconds and SW 5 ft at 10 seconds. .THU NIGHT AND FRI...W winds 20 to 25 kt with gusts up to 35 kt. Seas 3 to 5 ft. Wave Detail: SW 5 ft at 8 seconds and S 3 ft at 10 seconds. .FRI NIGHT...W winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SW 4 ft at 7 seconds. .SAT...W winds 15 to 20 kt. Seas 2 to 4 ft. A chance of rain and snow. .SAT NIGHT...W winds 15 to 20 kt. Seas 3 to 5 ft. A chance of rain and snow. .SUN...W winds 20 to 25 kt. Seas 2 to 3 ft. A chance of rain and snow. .SUN NIGHT...NW winds 25 to 30 kt. Seas 3 to 4 ft. A chance of snow. 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. $$ ANZ234-101900- Buzzards Bay- 104 AM EST Wed Dec 10 2025 ...GALE WARNING IN EFFECT THROUGH LATE TONIGHT... .REST OF TONIGHT...SW winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to 4 ft. Wave Detail: SW 4 ft at 6 seconds and NE 1 foot at 4 seconds. A slight chance of rain. .WED...SW winds 20 to 25 kt, becoming S 25 to 30 kt in the afternoon. Seas 4 to 6 ft. Wave Detail: SW 6 ft at 7 seconds and S 5 ft at 9 seconds. A chance of rain in the afternoon. .WED NIGHT...SW winds 25 to 30 kt, becoming W 15 to 20 kt after midnight. Seas 4 to 6 ft. Wave Detail: SW 6 ft at 8 seconds. A chance of rain. Patchy fog in the evening. .THU...W winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. Wave Detail: SW 5 ft at 9 seconds and W 4 ft at 7 seconds. .THU NIGHT THROUGH FRI NIGHT...W winds 20 to 25 kt with gusts up to 30 kt. Seas 2 to 4 ft. Wave Detail: SW 4 ft at 7 seconds and S 3 ft at 10 seconds. .SAT AND SAT NIGHT...W winds 10 to 15 kt, increasing to 15 to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 5 seconds and S 1 foot at 9 seconds. A chance of snow. .SUN...W winds 20 to 25 kt. Seas 2 to 3 ft. A chance of rain and snow. .SUN NIGHT...NW winds 25 to 30 kt. Seas 3 to 4 ft. A chance of snow. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-101900- Rhode Island Sound- 104 AM EST Wed Dec 10 2025 ...GALE WARNING IN EFFECT THROUGH LATE TONIGHT... .REST OF TONIGHT...SW winds 25 to 30 kt with gusts up to 35 kt. Seas 4 to 6 ft. Wave Detail: SW 6 ft at 7 seconds and SE 1 foot at 9 seconds. A slight chance of rain. .WED...SW winds 20 to 25 kt, increasing to 25 to 30 kt in the afternoon. Seas 5 to 7 ft, building to 6 to 9 ft in the afternoon. Wave Detail: SW 7 ft at 7 seconds and SE 1 foot at 9 seconds, becoming SW 9 ft at 7 seconds and S 9 ft at 9 seconds. A chance of rain in the afternoon. .WED NIGHT...SW winds 25 to 30 kt, becoming W 20 to 25 kt after midnight. Seas 7 to 10 ft. Wave Detail: SW 10 ft at 8 seconds. A chance of rain. .THU...W winds 20 to 25 kt, increasing to 25 to 30 kt in the afternoon. Seas 5 to 8 ft. Wave Detail: SW 8 ft at 9 seconds and W 7 ft at 7 seconds. .THU NIGHT AND FRI...W winds 25 to 30 kt with gusts up to 35 kt. Seas 4 to 6 ft. Wave Detail: W 6 ft at 8 seconds and S 5 ft at 10 seconds. .FRI NIGHT...W winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: W 5 ft at 7 seconds and S 1 foot at 10 seconds. .SAT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. A chance of rain. .SAT NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. A chance of rain and snow. .SUN...W winds 20 to 25 kt with gusts up to 30 kt. Seas 2 to 4 ft. A chance of rain and snow. .SUN NIGHT...NW winds 25 to 30 kt. Seas 3 to 5 ft. A chance of snow. 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. $$ ANZ237-101900- Block Island Sound- 104 AM EST Wed Dec 10 2025 ...GALE WARNING IN EFFECT THROUGH LATE TONIGHT... .REST OF TONIGHT...SW winds 20 to 25 kt with gusts up to 35 kt. Seas 4 to 6 ft. Wave Detail: SW 5 ft at 6 seconds and SE 1 foot at 9 seconds. .WED...SW winds 20 to 25 kt with gusts up to 35 kt. Seas 4 to 6 ft, building to 5 to 8 ft in the afternoon. Wave Detail: SW 5 ft at 6 seconds and SE 3 ft at 9 seconds, becoming S 7 ft at 7 seconds. A chance of rain in the afternoon. .WED NIGHT...SW winds 20 to 25 kt with gusts up to 35 kt. Seas 6 to 9 ft. Wave Detail: S 7 ft at 9 seconds and W 4 ft at 5 seconds. A chance of rain. Patchy fog in the evening. .THU...W winds 20 to 25 kt, increasing to 25 to 30 kt in the afternoon. Seas 5 to 7 ft. Wave Detail: S 6 ft at 9 seconds and W 5 ft at 5 seconds. .THU NIGHT...W winds 25 to 30 kt, diminishing to 20 to 25 kt after midnight. Seas 4 to 6 ft. Wave Detail: W 5 ft at 5 seconds and S 4 ft at 9 seconds. .FRI...W winds 20 to 25 kt, diminishing to 15 to 20 kt in the afternoon. Gusts up to 30 kt. Seas 3 to 5 ft. Wave Detail: W 4 ft at 5 seconds and S 3 ft at 9 seconds. .FRI NIGHT...W winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 2 to 4 ft. .SAT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. A chance of rain. .SAT NIGHT AND SUN...W winds 15 to 20 kt, increasing to 20 to 25 kt. Gusts up to 30 kt. Seas 2 to 4 ft. A chance of rain and snow. .SUN NIGHT...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to 5 ft. A chance of snow. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-101900- Boston Harbor- 104 AM EST Wed Dec 10 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .REST OF TONIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Waves around 2 ft. A slight chance of snow. .WED...SW winds 15 to 20 kt with gusts up to 30 kt. Waves around 2 ft. Rain likely in the afternoon. .WED NIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Waves around 2 ft. Rain likely, mainly in the evening. Patchy fog in the evening. .THU...W winds 15 to 20 kt, increasing to 20 to 25 kt in the afternoon. Gusts up to 30 kt. Waves around 2 ft. .THU NIGHT THROUGH FRI NIGHT...W winds 20 to 25 kt with gusts up to 30 kt. Waves around 2 ft. .SAT...SW winds 10 to 15 kt. Waves around 2 ft. .SAT NIGHT THROUGH SUN NIGHT...NW winds 20 to 25 kt with gusts up to 30 kt. Waves around 2 ft. A chance of snow. 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. $$ ANZ236-101900- Narragansett Bay- 104 AM EST Wed Dec 10 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .REST OF TONIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Waves 2 to 4 ft. A slight chance of rain. .WED...SW winds 15 to 20 kt, increasing to 20 to 25 kt in the afternoon. Gusts up to 35 kt. Waves 2 to 4 ft, building to 4 to 6 ft in the afternoon. A chance of rain in the afternoon. .WED NIGHT...SW winds 20 to 25 kt, becoming W 15 to 20 kt after midnight. Gusts up to 30 kt. Waves 3 to 5 ft. A chance of rain. Patchy fog in the evening. .THU...W winds 15 to 20 kt with gusts up to 30 kt. Waves 2 to 3 ft, except 4 to 6 ft at the bay entrance. .THU NIGHT THROUGH FRI NIGHT...W winds 15 to 20 kt with gusts up to 30 kt. Waves 2 to 3 ft. .SAT...W winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. .SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. A chance of snow. .SUN...NW winds 15 to 20 kt with gusts up to 25 kt. Waves 2 to 3 ft. A chance of snow and rain. .SUN NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Waves around 3 ft. A chance of snow. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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