Coastal Waters Forecast
Issued by NWS Boston, MA
Issued by NWS Boston, MA
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175 FZUS51 KBOX 171706 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 105 PM EDT Fri Jul 17 2026 Coastal waters from the Merrimack River MA to Watch Hill RI out to 60 NM ANZ200-180600- 105 PM EDT Fri Jul 17 2026 .Synopsis for Massachusetts and Rhode Island coastal waters... A weak low pres moveS along the S coast this evening. A high pres should then approach the waters Fri into Sat. A low pres moving across nrn New England Sat night into early Sun should push its cold front across the waters. A warm front should move N across the waters Tue. $$ ANZ250-180600- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 105 PM EDT Fri Jul 17 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM SATURDAY MORNING THROUGH SUNDAY MORNING... .THIS AFTERNOON...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: NW 2 ft at 4 seconds and S 1 foot at 5 seconds. .TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 1 foot at 4 seconds and N 1 foot at 4 seconds. Patchy smoke after midnight. .SAT...S winds 5 to 10 kt with gusts up to 20 kt, increasing to 20 to 25 kt with gusts up to 35 kt in the afternoon. Seas around 2 ft, building to 3 to 5 ft in the afternoon. Wave Detail: S 2 ft at 3 seconds and N 1 foot at 3 seconds, becoming S 4 ft at 4 seconds and N 2 ft at 3 seconds. Patchy smoke. A chance of showers in the afternoon. .SAT NIGHT...SW winds 20 to 25 kt with gusts up to 35 kt. Seas 3 to 5 ft. Wave Detail: SW 5 ft at 5 seconds and SE 1 foot at 14 seconds. A chance of showers. A chance of tstms in the evening. Some tstms may produce heavy rainfall in the evening. .SUN AND SUN NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: S 3 ft at 6 seconds and W 2 ft at 4 seconds. .MON THROUGH TUE...S winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 4 seconds and SE 2 ft at 9 seconds. .TUE NIGHT...S winds around 15 kt with gusts up to 25 kt. Seas around 3 ft. Showers. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-180600- Massachusetts Bay and Ipswich Bay- 105 PM EDT Fri Jul 17 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM SATURDAY MORNING THROUGH SUNDAY MORNING... .THIS AFTERNOON...SW winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: W 1 foot at 3 seconds and N 1 foot at 3 seconds. .TONIGHT...SW winds around 5 kt. Seas 1 foot or less. Wave Detail: S 1 foot at 2 seconds and N 1 foot at 3 seconds. Patchy smoke after midnight. .SAT...S winds 5 to 10 kt with gusts up to 20 kt, increasing to 15 to 20 kt with gusts up to 30 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: S 3 ft at 4 seconds and N 1 foot at 3 seconds. Patchy smoke. A chance of showers in the afternoon. .SAT NIGHT...S winds 15 to 20 kt, becoming SW 10 to 15 kt after midnight. Gusts up to 30 kt. Seas 3 to 4 ft. Wave Detail: SW 4 ft at 4 seconds and SE 1 foot at 8 seconds. A chance of showers. A chance of tstms in the evening. Some tstms may produce heavy rainfall in the evening. .SUN AND SUN NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at 7 seconds. .MON THROUGH TUE...S winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 3 seconds and N 1 foot at 3 seconds. .TUE NIGHT...S winds around 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Showers. 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. $$ ANZ231-180600- Cape Cod Bay- 105 PM EDT Fri Jul 17 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM SATURDAY MORNING THROUGH SUNDAY MORNING... .THIS AFTERNOON...S winds around 5 kt. Seas 1 foot or less. Wave Detail: N 1 foot at 4 seconds and S 1 foot at 5 seconds. .TONIGHT...S winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: S 1 foot at 2 seconds and N 1 foot at 4 seconds. Patchy smoke. .SAT...SW winds 5 to 10 kt with gusts up to 20 kt, becoming S 15 to 20 kt with gusts up to 30 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: SW 2 ft at 3 seconds and N 1 foot at 4 seconds. Patchy smoke. Showers likely in the afternoon. .SAT NIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. Wave Detail: SW 3 ft at 4 seconds and E 1 foot at 10 seconds. Showers likely. A chance of tstms in the evening. Some tstms may produce heavy rainfall in the evening. .SUN AND SUN NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at 8 seconds. .MON THROUGH TUE...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 6 seconds and NW 1 foot at 3 seconds. .TUE NIGHT...S winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Showers. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-180600- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 NM- 105 PM EDT Fri Jul 17 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM SATURDAY MORNING THROUGH SUNDAY AFTERNOON... .THIS AFTERNOON...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: N 2 ft at 4 seconds and S 2 ft at 6 seconds. .TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 6 seconds and N 1 foot at 5 seconds. Patchy smoke after midnight. .SAT...SW winds 10 to 15 kt, becoming S 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: S 3 ft at 4 seconds and N 1 foot at 5 seconds. Patchy smoke. A chance of showers in the afternoon. .SAT NIGHT...SW winds 20 to 25 kt with gusts up to 35 kt. Seas 4 to 6 ft. Wave Detail: SE 6 ft at 7 seconds and W 2 ft at 5 seconds. Showers with a chance of tstms. Some tstms may produce heavy rainfall. .SUN...W winds 15 to 20 kt with gusts up to 30 kt, becoming NW 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 4 to 6 ft. Wave Detail: SW 6 ft at 6 seconds and SE 3 ft at 8 seconds. .SUN NIGHT...NW winds 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: S 4 ft at 8 seconds and NW 1 foot at 3 seconds. .MON THROUGH TUE...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .TUE NIGHT...S winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to 6 ft. Showers likely. 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. $$ ANZ255-180600- Coastal Waters extending out to 25 NM South of Marthas Vineyard and Nantucket- 105 PM EDT Fri Jul 17 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM SATURDAY MORNING THROUGH SUNDAY AFTERNOON... .THIS AFTERNOON...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 6 seconds and N 1 foot at 3 seconds. Patchy smoke. .TONIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 6 seconds and N 1 foot at 4 seconds. Patchy smoke. .SAT...S winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: S 4 ft at 5 seconds and NE 1 foot at 5 seconds. Patchy smoke. A chance of showers in the afternoon. .SAT NIGHT...SW winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to 7 ft. Wave Detail: SW 7 ft at 7 seconds and NW 1 foot at 6 seconds. Showers with a chance of tstms. Some tstms may produce heavy rainfall. .SUN...W winds 15 to 20 kt with gusts up to 25 kt, diminishing to 10 to 15 kt in the afternoon. Seas 5 to 7 ft. Wave Detail: W 7 ft at 6 seconds and E 1 foot at 10 seconds. .SUN NIGHT...NW winds around 10 kt. Seas 4 to 6 ft. Wave Detail: SW 6 ft at 8 seconds and N 2 ft at 5 seconds. .MON AND MON NIGHT...W winds 5 to 10 kt, becoming S. Seas 3 to 5 ft. .TUE...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .TUE NIGHT...S winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to 7 ft. Showers likely. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-180600- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 NM South of Block Island- 105 PM EDT Fri Jul 17 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM SATURDAY MORNING THROUGH SUNDAY AFTERNOON... .THIS AFTERNOON...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 6 seconds and NW 1 foot at 2 seconds. Areas of smoke. .TONIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 5 seconds and N 1 foot at 4 seconds. Areas of smoke in the evening, then patchy smoke after midnight. .SAT...S winds 10 to 15 kt with gusts up to 25 kt. Seas around 2 ft, building to 3 to 4 ft in the afternoon. Wave Detail: SW 2 ft at 5 seconds and NE 1 foot at 5 seconds, becoming S 4 ft at 5 seconds and N 2 ft at 5 seconds. Patchy smoke. Showers with a chance of tstms in the afternoon. Some tstms may produce heavy rainfall in the afternoon. .SAT NIGHT...SW winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to 7 ft. Wave Detail: SW 7 ft at 7 seconds and NW 3 ft at 4 seconds. Showers with a chance of tstms. Some tstms may produce heavy rainfall. .SUN...W winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: W 6 ft at 7 seconds and E 3 ft at 9 seconds. .SUN NIGHT...NW winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Seas 4 to 6 ft. Wave Detail: S 6 ft at 8 seconds and NE 2 ft at 7 seconds. .MON THROUGH TUE...S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. .TUE NIGHT...S winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to 7 ft. Showers. 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. $$ ANZ232-180600- Nantucket Sound- 105 PM EDT Fri Jul 17 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM SATURDAY MORNING THROUGH SUNDAY MORNING... .THIS AFTERNOON...SW winds 5 to 10 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: NW 1 foot at 2 seconds and SW 1 foot at 6 seconds. .TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 1 foot at 3 seconds and N 1 foot at 3 seconds. Patchy smoke. .SAT...SW winds 10 to 15 kt, becoming S 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and NE 1 foot at 5 seconds. Patchy smoke. Showers with a chance of tstms in the afternoon. Some tstms may produce heavy rainfall in the afternoon. .SAT NIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. Wave Detail: SW 5 ft at 5 seconds and SE 1 foot at 9 seconds. Showers with a chance of tstms. Some tstms may produce heavy rainfall. .SUN AND SUN NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: S 4 ft at 7 seconds and W 3 ft at 4 seconds. .MON THROUGH TUE...S winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 5 seconds and N 2 ft at 5 seconds. .TUE NIGHT...S winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to 5 ft. Showers. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-180600- Vineyard Sound- 105 PM EDT Fri Jul 17 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM SATURDAY MORNING THROUGH SUNDAY MORNING... .THIS AFTERNOON...SW winds around 10 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 5 seconds and NW 1 foot at 3 seconds. Patchy smoke. .TONIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt in the evening. Seas around 2 ft. Wave Detail: SW 2 ft at 6 seconds and W 1 foot at 3 seconds. Areas of smoke in the evening, then patchy smoke after midnight. .SAT...SW winds 5 to 10 kt, becoming S around 15 kt in the afternoon. Gusts up to 25 kt. Seas around 2 ft, building to 3 to 4 ft in the afternoon. Wave Detail: SW 2 ft at 4 seconds and NE 1 foot at 8 seconds, becoming SW 4 ft at 5 seconds and NE 1 foot at 4 seconds. Patchy smoke. Showers with a chance of tstms in the afternoon. Some tstms may produce heavy rainfall in the afternoon. .SAT NIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. Wave Detail: SW 5 ft at 7 seconds and E 2 ft at 7 seconds. Showers with a chance of tstms. Some tstms may produce heavy rainfall. .SUN AND SUN NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SW 4 ft at 7 seconds and SE 2 ft at 7 seconds. .MON THROUGH TUE...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 4 seconds and SW 3 ft at 5 seconds. .TUE NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Showers. 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. $$ ANZ234-180600- Buzzards Bay- 105 PM EDT Fri Jul 17 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM SATURDAY MORNING THROUGH SUNDAY MORNING... .THIS AFTERNOON...SW winds 5 to 10 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SW 1 foot at 4 seconds and N 1 foot at 4 seconds. Patchy smoke. .TONIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt in the evening. Seas around 2 ft. Wave Detail: SW 1 foot at 4 seconds and N 1 foot at 5 seconds. Areas of smoke in the evening, then patchy smoke after midnight. .SAT...SW winds 10 to 15 kt. Gusts up to 20 kt, increasing to 30 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 5 seconds and NE 1 foot at 7 seconds. Patchy smoke. Showers with a chance of tstms in the afternoon. Some tstms may produce heavy rainfall in the afternoon. .SAT NIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. Wave Detail: SW 5 ft at 6 seconds and SE 2 ft at 11 seconds. A chance of tstms. Showers in the evening, then showers likely after midnight. Some tstms may produce heavy rainfall. .SUN AND SUN NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SW 4 ft at 7 seconds and SW 3 ft at 4 seconds. .MON THROUGH TUE...S winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 4 seconds and SW 3 ft at 5 seconds. .TUE NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 4 ft. Showers. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-180600- Rhode Island Sound- 105 PM EDT Fri Jul 17 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM SATURDAY MORNING THROUGH SUNDAY MORNING... .THIS AFTERNOON...SW winds around 10 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: S 2 ft at 7 seconds and W 1 foot at 3 seconds. Areas of smoke. .TONIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt in the evening. Seas 2 to 3 ft. Wave Detail: S 2 ft at 7 seconds and W 1 foot at 3 seconds. Areas of smoke in the evening, then patchy smoke after midnight. .SAT...S winds 10 to 15 kt with gusts up to 25 kt. Seas around 2 ft, building to 3 to 4 ft in the afternoon. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at 8 seconds, becoming SW 4 ft at 5 seconds and NE 1 foot at 4 seconds. Patchy smoke. Showers with a chance of tstms in the afternoon. Some tstms may produce heavy rainfall in the afternoon. .SAT NIGHT...SW winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to 6 ft. Wave Detail: SW 6 ft at 7 seconds and SE 1 foot at 14 seconds. A chance of tstms. Showers in the evening, then a chance of showers after midnight. Some tstms may produce heavy rainfall. .SUN AND SUN NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: SW 5 ft at 6 seconds and SE 1 foot at 13 seconds. .MON THROUGH TUE...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: NE 4 ft at 4 seconds and S 4 ft at 8 seconds. .TUE NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Showers. 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. $$ ANZ237-180600- Block Island Sound- 105 PM EDT Fri Jul 17 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM SATURDAY MORNING THROUGH SUNDAY MORNING... .THIS AFTERNOON...SW winds around 10 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: S 2 ft at 7 seconds and W 1 foot at 3 seconds. Areas of smoke. .TONIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt in the evening. Seas 2 to 3 ft. Wave Detail: S 2 ft at 7 seconds and W 1 foot at 3 seconds. Areas of smoke in the evening, then patchy smoke after midnight. .SAT...S winds 10 to 15 kt with gusts up to 25 kt. Seas around 2 ft, building to 3 to 4 ft in the afternoon. Wave Detail: S 2 ft at 5 seconds and W 1 foot at 2 seconds, becoming SW 3 ft at 4 seconds and NE 1 foot at 5 seconds. Patchy smoke. Showers with a chance of tstms in the afternoon. Some tstms may produce heavy rainfall in the afternoon with vsby 1 to 3 NM. .SAT NIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. Wave Detail: S 5 ft at 7 seconds and W 2 ft at 4 seconds. Showers with a chance of tstms in the evening, then a chance of showers after midnight. Some tstms may produce heavy rainfall in the evening. .SUN...W winds 10 to 15 kt. Gusts up to 25 kt in the morning. Seas 2 to 4 ft. Wave Detail: S 4 ft at 7 seconds and W 2 ft at 4 seconds. .SUN NIGHT...NW winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: S 4 ft at 8 seconds and SE 2 ft at 8 seconds. .MON AND MON NIGHT...W winds 5 to 10 kt, becoming S. Seas 2 to 4 ft. .TUE...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. .TUE NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Showers. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-180600- Boston Harbor- 105 PM EDT Fri Jul 17 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM SATURDAY MORNING THROUGH SUNDAY MORNING... .THIS AFTERNOON...W winds 5 to 10 kt. Waves around 2 ft. .TONIGHT...SW winds around 5 kt. Waves 1 foot or less. Patchy smoke after midnight. .SAT...SW winds 5 to 10 kt, becoming S 15 to 20 kt with gusts up to 30 kt in the afternoon. Waves around 2 ft. Patchy smoke. Showers likely in the afternoon. .SAT NIGHT...SW winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 30 kt. Waves around 2 ft. Showers. A chance of tstms in the evening. Some tstms may produce heavy rainfall in the evening. .SUN AND SUN NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. .MON AND MON NIGHT...W winds 5 to 10 kt, becoming S. Waves around 2 ft. .TUE...S winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. A chance of showers. .TUE NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. Showers. Winds and waves 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. $$ ANZ236-180600- Narragansett Bay- 105 PM EDT Fri Jul 17 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM SATURDAY MORNING THROUGH SUNDAY MORNING... .THIS AFTERNOON...SW winds 5 to 10 kt. Waves around 2 ft. Patchy smoke. .TONIGHT...SW winds 5 to 10 kt. Waves around 2 ft. Patchy smoke in the evening, then areas of smoke after midnight. .SAT...S winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Gusts up to 25 kt. Waves 2 to 3 ft. Patchy smoke. Showers with a chance of tstms in the afternoon. Some tstms may produce heavy rainfall in the afternoon. .SAT NIGHT...SW winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 30 kt. Waves 2 to 4 ft. Showers. A chance of tstms in the evening. Some tstms may produce heavy rainfall in the evening. .SUN AND SUN NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. .MON AND MON NIGHT...W winds 5 to 10 kt, becoming S. Waves around 2 ft. .TUE...S winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. A chance of showers. .TUE NIGHT...S winds around 15 kt with gusts up to 20 kt. Waves 2 to 4 ft. Showers. Winds and waves higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ280-180600- Ocean Waters from the Merrimack River to Plymouth from 40 to 60 NM- 105 PM EDT Fri Jul 17 2026 .THIS AFTERNOON...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: NW 2 ft at 5 seconds and S 1 foot at 6 seconds. .TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: NW 2 ft at 4 seconds and S 2 ft at 7 seconds. Patchy smoke after midnight. .SAT...S winds 10 to 15 kt with gusts up to 20 kt, increasing to 20 to 25 kt with gusts up to 30 kt in the afternoon. Seas 2 to 3 ft, building to 3 to 5 ft in the afternoon. Wave Detail: S 2 ft at 6 seconds and NW 1 foot at 3 seconds, becoming S 5 ft at 5 seconds and NW 1 foot at 3 seconds. Patchy smoke. A chance of showers in the afternoon. .SAT NIGHT...SW winds 20 to 25 kt with gusts up to 35 kt. Seas 5 to 7 ft. Wave Detail: SW 6 ft at 6 seconds and SE 6 ft at 9 seconds. A chance of showers and tstms in the evening, then showers likely after midnight. Some tstms may produce heavy rainfall in the evening. .SUN...W winds 15 to 20 kt with gusts up to 30 kt, diminishing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 4 to 6 ft. Wave Detail: S 6 ft at 7 seconds and SE 1 foot at 13 seconds. .SUN NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft at 8 seconds and W 2 ft at 4 seconds. .MON THROUGH TUE...S winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .TUE NIGHT...S winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. Showers likely. 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. $$ ANZ281-180600- Ocean Waters from Provincetown to Nantucket from 20 to 60 NM- 105 PM EDT Fri Jul 17 2026 .THIS AFTERNOON...W winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 6 seconds and N 2 ft at 5 seconds. Patchy smoke. .TONIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 6 seconds and N 2 ft at 5 seconds. Patchy smoke. .SAT...S winds 10 to 15 kt with gusts up to 20 kt, increasing to 15 to 20 kt with gusts up to 30 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: S 4 ft at 5 seconds and N 1 foot at 5 seconds. Patchy smoke. A chance of showers in the afternoon. .SAT NIGHT...SW winds 20 to 25 kt with gusts up to 35 kt. Seas 5 to 7 ft. Wave Detail: S 7 ft at 7 seconds and W 2 ft at 5 seconds. A chance of tstms. A chance of showers in the evening, then showers likely after midnight. Some tstms may produce heavy rainfall. .SUN...W winds 15 to 20 kt with gusts up to 30 kt, diminishing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 5 to 7 ft. Wave Detail: W 7 ft at 7 seconds and SE 3 ft at 7 seconds. A chance of showers in the morning. .SUN NIGHT...W winds 5 to 10 kt. Seas 4 to 6 ft. Wave Detail: S 6 ft at 8 seconds and S 4 ft at 10 seconds. .MON...NW winds 5 to 10 kt. Seas 4 to 6 ft. .MON NIGHT AND TUE...S winds 5 to 10 kt, becoming SE 10 to 15 kt with gusts up to 25 kt. Seas 3 to 4 ft. .TUE NIGHT...S winds 20 to 25 kt with gusts up to 30 kt. Seas 6 to 9 ft. Showers likely. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ282-180600- Ocean Waters from Marthas Vineyard to Nantucket from 25 to 60 NM- 105 PM EDT Fri Jul 17 2026 .THIS AFTERNOON...W winds around 5 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 6 seconds and N 1 foot at 4 seconds. Areas of smoke. .TONIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 6 seconds and N 1 foot at 4 seconds. Patchy smoke. .SAT...S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: S 3 ft at 5 seconds and N 1 foot at 5 seconds. Patchy smoke. A chance of showers in the afternoon. .SAT NIGHT...SW winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to 5 ft, building to 5 to 7 ft after midnight. Wave Detail: S 4 ft at 5 seconds and N 1 foot at 4 seconds, becoming SW 7 ft at 6 seconds and NW 1 foot at 5 seconds. A chance of showers in the evening, then showers with a chance of tstms after midnight. Some tstms may produce heavy rainfall after midnight. .SUN...W winds 15 to 20 kt with gusts up to 30 kt, diminishing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 6 to 7 ft. Wave Detail: W 7 ft at 7 seconds and E 1 foot at 8 seconds. A chance of showers in the morning. .SUN NIGHT...NW winds 5 to 10 kt. Seas 5 to 7 ft. Wave Detail: SW 7 ft at 8 seconds and N 2 ft at 4 seconds. .MON...N winds 5 to 10 kt. Seas 4 to 6 ft. .MON NIGHT AND TUE...S winds 5 to 10 kt, becoming SE 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. .TUE NIGHT...S winds 20 to 25 kt with gusts up to 30 kt. Seas 6 to 9 ft. Showers likely. 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. $$ ANZ283-180600- Ocean Waters from Montauk NY to Marthas Vineyard from 25 to 60 NM- 105 PM EDT Fri Jul 17 2026 .THIS AFTERNOON...W winds around 5 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 6 seconds and N 1 foot at 3 seconds. Areas of smoke. .TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: N 2 ft at 3 seconds and SW 2 ft at 6 seconds. Areas of smoke in the evening, then patchy smoke after midnight. .SAT...S winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 5 seconds and SE 1 foot at 8 seconds. Patchy smoke. A chance of showers in the afternoon. .SAT NIGHT...SW winds 20 to 25 kt with gusts up to 35 kt. Seas 3 to 5 ft, building to 5 to 7 ft after midnight. Wave Detail: S 5 ft at 5 seconds and N 1 foot at 4 seconds, becoming SW 7 ft at 7 seconds and NW 4 ft at 4 seconds. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. .SUN...W winds 15 to 20 kt with gusts up to 30 kt, diminishing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 6 to 7 ft. Wave Detail: SW 7 ft at 7 seconds and E 1 foot at 9 seconds. .SUN NIGHT...NW winds 10 to 15 kt. Seas 5 to 6 ft. Wave Detail: SW 6 ft at 8 seconds and N 2 ft at 5 seconds. .MON THROUGH TUE...S winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. .TUE NIGHT...S winds 20 to 25 kt with gusts up to 30 kt. Seas 6 to 9 ft. Showers likely. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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