077 FZUS51 KBOX 181704 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 104 PM EDT Mon May 18 2026 Coastal waters from the Merrimack River MA to Watch Hill RI out to 60 NM ANZ200-190600- 104 PM EDT Mon May 18 2026 .Synopsis for Massachusetts and Rhode Island coastal waters... A weak cold front will move into the southern waters this morning before lifting back N as a warm front later today and this evening. Gusty SW winds will develop Tue. A strong cold front will cross the waters late Wed and Wed evening. Strong high pres builds over the Gt Lakes Thu and moves into the waters Fri. The high moves offshore by Sat as a frontal boundary approaches from the S. $$ ANZ250-190600- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 104 PM EDT Mon May 18 2026 .THIS AFTERNOON...SE winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at 3 seconds and SE 2 ft at 8 seconds. .TONIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds and S 2 ft at 3 seconds. Patchy fog. Vsby 1 NM or less. .TUE...SW winds 10 to 15 kt with gusts up to 20 kt, becoming S 15 to 20 kt with gusts up to 30 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and SE 2 ft at 7 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .TUE NIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. Wave Detail: SW 3 ft at 4 seconds and SE 3 ft at 7 seconds. .WED...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and SE 3 ft at 8 seconds. Showers likely in the afternoon. .WED NIGHT...W winds around 15 kt, becoming NW after midnight. Gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: N 3 ft at 4 seconds and SE 2 ft at 8 seconds. Showers likely in the evening. .THU THROUGH FRI...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .FRI NIGHT...S winds 5 to 10 kt. Seas around 2 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-190600- Massachusetts Bay and Ipswich Bay- 104 PM EDT Mon May 18 2026 .THIS AFTERNOON...SE winds 10 to 15 kt. Seas around 2 ft. Wave Detail: E 2 ft at 3 seconds and S 1 foot at 3 seconds. .TONIGHT...S winds 10 to 15 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 4 seconds and SE 2 ft at 8 seconds. Patchy fog after midnight with vsby 1 to 3 NM. .TUE...SW winds 10 to 15 kt. Gusts up to 25 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: S 2 ft at 3 seconds and SE 2 ft at 8 seconds. .TUE NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 3 seconds and SE 2 ft at 7 seconds. .WED...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 3 seconds and SE 1 foot at 8 seconds. Showers likely in the afternoon. .WED NIGHT...NW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas around 2 ft. Wave Detail: NW 2 ft at 3 seconds and SE 1 foot at 8 seconds. Showers likely in the evening. .THU THROUGH FRI...E winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. .FRI NIGHT...S winds 5 to 10 kt. Seas around 2 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ231-190600- Cape Cod Bay- 104 PM EDT Mon May 18 2026 .THIS AFTERNOON...SE winds around 10 kt. Seas around 2 ft. Wave Detail: SE 1 foot at 2 seconds and SW 1 foot at 3 seconds. .TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas around 2 ft. Wave Detail: S 1 foot at 2 seconds and E 1 foot at 3 seconds. Patchy fog. Vsby 1 NM or less in the evening. .TUE...SW winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SW 2 ft at 3 seconds and NE 1 foot at 4 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .TUE NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SW 2 ft at 3 seconds and SE 1 foot at 9 seconds. .WED...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SW 2 ft at 3 seconds and SE 1 foot at 3 seconds. Showers likely in the afternoon. .WED NIGHT...W winds 10 to 15 kt, becoming NW after midnight. Gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: W 2 ft at 3 seconds and N 1 foot at 3 seconds. A chance of showers in the evening. .THU THROUGH FRI...E winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. .FRI NIGHT...S winds 5 to 10 kt. Seas 1 foot or less. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-190600- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 NM- 104 PM EDT Mon May 18 2026 .THIS AFTERNOON...SE winds around 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds and SW 2 ft at 5 seconds. Patchy fog. Vsby 1 NM or less. .TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and SE 3 ft at 7 seconds. Patchy fog. Vsby 1 NM or less. .TUE...SW winds 15 to 20 kt. Gusts up to 30 kt in the afternoon. Seas 3 to 5 ft. Wave Detail: SW 5 ft at 6 seconds and SE 2 ft at 9 seconds. Patchy fog. Vsby 1 NM or less, increasing to 1 to 3 NM in the afternoon. .TUE NIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. Wave Detail: S 5 ft at 7 seconds and E 1 foot at 14 seconds. Patchy fog. Vsby 1 NM or less, increasing to 1 to 3 NM after midnight. .WED...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: S 5 ft at 7 seconds. A chance of showers in the afternoon. .WED NIGHT...W winds 15 to 20 kt, becoming NW 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 4 to 6 ft, subsiding to 3 to 4 ft after midnight. Wave Detail: SW 5 ft at 6 seconds and SE 3 ft at 9 seconds, becoming NW 4 ft at 4 seconds and S 2 ft at 8 seconds. A chance of showers. .THU THROUGH FRI...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .FRI NIGHT...S winds 5 to 10 kt. Seas around 2 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ255-190600- Coastal Waters extending out to 25 NM South of Marthas Vineyard and Nantucket- 104 PM EDT Mon May 18 2026 .THIS AFTERNOON...S winds around 10 kt. Seas around 3 ft. Wave Detail: S 3 ft at 8 seconds and SW 2 ft at 7 seconds. Patchy fog. Vsby 1 NM or less. .TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas 2 to 4 ft. Wave Detail: S 3 ft at 7 seconds and NE 1 foot at 3 seconds. Patchy fog. Vsby 1 NM or less. .TUE...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: SW 6 ft at 6 seconds and SE 2 ft at 9 seconds. Patchy fog. Vsby 1 NM or less. .TUE NIGHT...SW winds around 20 kt with gusts up to 25 kt. Seas 5 to 7 ft. Wave Detail: SW 7 ft at 7 seconds and E 4 ft at 10 seconds. Patchy fog. Vsby 1 NM or less. .WED...SW winds around 20 kt with gusts up to 25 kt. Seas 5 to 7 ft. Wave Detail: SW 7 ft at 7 seconds and SE 1 foot at 3 seconds. .WED NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt, becoming NW 10 to 15 kt after midnight. Seas 5 to 7 ft, subsiding to 3 to 5 ft after midnight. Wave Detail: SW 6 ft at 7 seconds and E 1 foot at 10 seconds, becoming SW 5 ft at 7 seconds and N 2 ft at 2 seconds. A chance of showers. .THU AND THU NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt, becoming E 5 to 10 kt. Seas 2 to 4 ft. .FRI...E winds 5 to 10 kt. Seas around 2 ft. .FRI NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-190600- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 NM South of Block Island- 104 PM EDT Mon May 18 2026 .THIS AFTERNOON...S winds 5 to 10 kt. Seas around 3 ft. Wave Detail: S 3 ft at 7 seconds and E 2 ft at 5 seconds. Patchy fog. Vsby 1 NM or less. .TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 7 seconds and S 3 ft at 8 seconds. Patchy fog. Vsby 1 NM or less. .TUE...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: SW 5 ft at 6 seconds and SE 2 ft at 9 seconds. Patchy fog. Vsby 1 NM or less. .TUE NIGHT...SW winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to 7 ft. Wave Detail: S 7 ft at 7 seconds. Patchy fog. Vsby 1 NM or less. .WED...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 7 ft. Wave Detail: SW 6 ft at 7 seconds and S 5 ft at 9 seconds. A chance of showers in the afternoon. .WED NIGHT...W winds 15 to 20 kt with gusts up to 25 kt, becoming NW 10 to 15 kt after midnight. Seas 4 to 6 ft. Wave Detail: SW 6 ft at 7 seconds and SE 2 ft at 9 seconds. A chance of showers. .THU AND THU NIGHT...NE winds 10 to 15 kt, becoming E 5 to 10 kt. Seas 2 to 4 ft. .FRI...E winds 5 to 10 kt. Seas around 2 ft. .FRI NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ232-190600- Nantucket Sound- 104 PM EDT Mon May 18 2026 .THIS AFTERNOON...S winds around 10 kt. Seas around 2 ft. Wave Detail: E 1 foot at 3 seconds and SW 1 foot at 5 seconds. .TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and E 1 foot at 3 seconds. Patchy fog. Vsby 1 NM or less. .TUE...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and E 1 foot at 4 seconds. Patchy fog in the morning with vsby 1 NM or less. .TUE NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and SE 1 foot at 9 seconds. Patchy fog in the evening with vsby 1 NM or less. .WED...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and SE 1 foot at 3 seconds. A chance of showers in the afternoon. .WED NIGHT...W winds 15 to 20 kt with gusts up to 25 kt, becoming NW 10 to 15 kt after midnight. Seas 2 to 4 ft. Wave Detail: W 3 ft at 4 seconds and N 2 ft at 2 seconds. A chance of showers. .THU THROUGH FRI...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .FRI NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-190600- Vineyard Sound- 104 PM EDT Mon May 18 2026 .THIS AFTERNOON...S winds around 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 7 seconds and E 1 foot at 3 seconds. .TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 6 seconds and SE 3 ft at 9 seconds. Patchy fog. Vsby 1 NM or less. .TUE...SW winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SW 4 ft at 6 seconds and SE 2 ft at 9 seconds. Patchy fog in the morning with vsby 1 NM or less. .TUE NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: SW 5 ft at 6 seconds and E 2 ft at 6 seconds. .WED...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: SW 5 ft at 7 seconds and E 2 ft at 5 seconds. A chance of showers in the afternoon. .WED NIGHT...W winds 15 to 20 kt, becoming NW around 10 kt after midnight. Seas 3 to 5 ft, subsiding to 2 to 3 ft after midnight. Wave Detail: SW 5 ft at 7 seconds and E 1 foot at 9 seconds, becoming SW 3 ft at 7 seconds and N 2 ft at 2 seconds. A chance of showers. .THU THROUGH FRI...E winds 10 to 15 kt. Seas 2 to 3 ft. .FRI NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ234-190600- Buzzards Bay- 104 PM EDT Mon May 18 2026 .THIS AFTERNOON...S winds around 10 kt. Seas around 2 ft. Wave Detail: E 1 foot at 2 seconds and S 1 foot at 8 seconds. .TONIGHT...SW winds 10 to 15 kt. Seas around 2 ft. Wave Detail: S 2 ft at 4 seconds and SE 2 ft at 9 seconds. Patchy fog. Vsby 1 NM or less. .TUE...SW winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 5 seconds and SE 2 ft at 8 seconds. Patchy fog in the morning with vsby 1 NM or less. .TUE NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft at 6 seconds and SE 1 foot at 18 seconds. .WED...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: S 4 ft at 6 seconds. A chance of showers in the afternoon. .WED NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming NW after midnight. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 6 seconds and N 2 ft at 2 seconds. A chance of showers in the evening. .THU THROUGH FRI...E winds 5 to 10 kt. Seas around 2 ft. .FRI NIGHT...SE winds 5 to 10 kt. Seas 1 foot or less. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-190600- Rhode Island Sound- 104 PM EDT Mon May 18 2026 .THIS AFTERNOON...S winds around 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 7 seconds and E 1 foot at 3 seconds. .TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas 2 to 3 ft. Wave Detail: S 3 ft at 8 seconds and E 1 foot at 3 seconds. Patchy fog. Vsby 1 NM or less. .TUE...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: SW 5 ft at 6 seconds and SE 2 ft at 9 seconds. Patchy fog. Vsby 1 NM or less, increasing to 1 to 3 NM in the afternoon. .TUE NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: S 6 ft at 7 seconds. Patchy fog in the evening with vsby 1 NM or less. .WED...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: S 6 ft at 7 seconds. A chance of showers in the afternoon. .WED NIGHT...W winds 15 to 20 kt, becoming NW 10 to 15 kt after midnight. Seas 3 to 5 ft. Wave Detail: S 5 ft at 7 seconds and NE 1 foot at 2 seconds. A chance of showers in the evening. .THU AND THU NIGHT...NE winds 10 to 15 kt, becoming E 5 to 10 kt. Seas 2 to 4 ft. .FRI...E winds 5 to 10 kt. Seas around 2 ft. .FRI NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ237-190600- Block Island Sound- 104 PM EDT Mon May 18 2026 .THIS AFTERNOON...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 7 seconds and E 1 foot at 2 seconds. .TONIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 7 seconds and E 1 foot at 3 seconds. Patchy fog. Vsby 1 NM or less. .TUE...SW winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SW 4 ft at 4 seconds and SE 2 ft at 9 seconds. Patchy fog in the morning with vsby 1 NM or less. .TUE NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: SW 4 ft at 5 seconds and SE 4 ft at 8 seconds. .WED...SW winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: SW 4 ft at 7 seconds and SE 1 foot at 14 seconds. A chance of showers in the afternoon. .WED NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming NW after midnight. Seas 3 to 5 ft. Wave Detail: SW 3 ft at 6 seconds and NE 1 foot at 2 seconds. A chance of showers in the evening. .THU THROUGH FRI...E winds 5 to 10 kt. Seas 2 to 3 ft. .FRI NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-190600- Boston Harbor- 104 PM EDT Mon May 18 2026 .THIS AFTERNOON...E winds 10 to 15 kt. Waves around 2 ft. .TONIGHT...S winds around 10 kt, becoming SW after midnight. Waves around 2 ft. .TUE...SW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Waves around 2 ft. .TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. .WED...W winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. Showers in the afternoon. .WED NIGHT...NW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Waves around 2 ft. Showers likely in the evening. .THU THROUGH FRI...E winds 10 to 15 kt. Waves around 2 ft. .FRI NIGHT...S winds 5 to 10 kt. Waves 1 foot or less. 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. $$ ANZ236-190600- Narragansett Bay- 104 PM EDT Mon May 18 2026 .THIS AFTERNOON...S winds around 10 kt. Waves around 2 ft. .TONIGHT...SW winds around 10 kt. Waves around 2 ft. Patchy fog. Vsby 1 NM or less. .TUE...SW winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. Patchy fog in the morning with vsby 1 NM or less. .TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. .WED...SW winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 25 kt. Waves 2 to 4 ft. Showers likely in the afternoon. .WED NIGHT...NW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Waves 2 to 3 ft. A chance of showers in the evening. .THU THROUGH FRI...E winds 10 to 15 kt. Waves around 2 ft. .FRI NIGHT...SE winds 5 to 10 kt. Waves around 2 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ280-190600- Ocean Waters from the Merrimack River to Plymouth from 40 to 60 NM- 104 PM EDT Mon May 18 2026 .THIS AFTERNOON...SE winds 10 to 15 kt. Seas around 3 ft. Wave Detail: S 3 ft at 8 seconds and SW 1 foot at 3 seconds. .TONIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and SE 3 ft at 7 seconds. Patchy fog. Vsby 1 NM or less. .TUE...SW winds 15 to 20 kt. Gusts up to 20 kt, increasing to 30 kt in the afternoon. Seas 3 to 4 ft, building to 4 to 6 ft in the afternoon. Wave Detail: SW 3 ft at 5 seconds and SE 2 ft at 9 seconds, becoming S 5 ft at 5 seconds and SE 3 ft at 9 seconds. Patchy fog in the morning with vsby 1 NM or less. .TUE NIGHT...SW winds 20 to 25 kt, diminishing to 15 to 20 kt after midnight. Gusts up to 30 kt. Seas 5 to 7 ft. Wave Detail: SW 6 ft at 6 seconds and S 6 ft at 9 seconds. Patchy fog after midnight with vsby 1 NM or less. .WED...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: S 4 ft at 5 seconds. A chance of showers in the afternoon. .WED NIGHT...W winds 15 to 20 kt, becoming NW after midnight. Gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: S 4 ft at 7 seconds and W 3 ft at 4 seconds. A chance of showers in the evening. .THU AND THU NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt. Seas 2 to 4 ft. .FRI AND FRI NIGHT...NW winds 5 to 10 kt, becoming S. 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. $$ ANZ281-190600- Ocean Waters from Provincetown to Nantucket from 20 to 60 NM- 104 PM EDT Mon May 18 2026 .THIS AFTERNOON...SE winds around 10 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft at 7 seconds and NE 1 foot at 4 seconds. Patchy fog. Vsby 1 NM or less. .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft at 7 seconds and NE 1 foot at 4 seconds. Patchy fog. Vsby 1 NM or less. .TUE...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. Wave Detail: SW 6 ft at 6 seconds and SE 2 ft at 9 seconds. Patchy fog. Vsby 1 NM or less. .TUE NIGHT...SW winds 20 to 25 kt with gusts up to 30 kt. Seas around 6 ft. Wave Detail: SW 6 ft at 7 seconds and SE 4 ft at 9 seconds. Patchy fog. Vsby 1 NM or less. .WED...SW winds around 20 kt with gusts up to 30 kt. Seas 6 to 7 ft. Wave Detail: SW 6 ft at 7 seconds and SE 1 foot at 9 seconds. A chance of showers in the afternoon. .WED NIGHT...SW winds 15 to 20 kt, becoming NW after midnight. Gusts up to 25 kt. Seas 5 to 7 ft. Wave Detail: SW 6 ft at 7 seconds and SE 2 ft at 9 seconds. A chance of showers. .THU THROUGH FRI...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .FRI NIGHT...SE winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ282-190600- Ocean Waters from Marthas Vineyard to Nantucket from 25 to 60 NM- 104 PM EDT Mon May 18 2026 .THIS AFTERNOON...S winds around 10 kt. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 7 seconds and NE 2 ft at 3 seconds. Patchy fog. Vsby 1 NM or less. .TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 6 seconds and SE 2 ft at 9 seconds. Patchy fog. Vsby 1 NM or less. .TUE...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: SW 5 ft at 6 seconds and SE 2 ft at 9 seconds. Patchy fog. Vsby 1 NM or less. .TUE 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 SE 2 ft at 9 seconds. Patchy fog. Vsby 1 NM or less. .WED...SW winds around 20 kt with gusts up to 25 kt. Seas 6 to 7 ft. Wave Detail: SW 6 ft at 7 seconds and SE 2 ft at 9 seconds. .WED NIGHT...SW winds 15 to 20 kt, becoming W 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 6 to 7 ft, subsiding to 4 to 6 ft after midnight. Wave Detail: SW 6 ft at 7 seconds and SE 2 ft at 9 seconds, becoming SW 5 ft at 7 seconds and N 2 ft at 2 seconds. A chance of showers in the evening, then showers likely after midnight. .THU...NE winds 10 to 15 kt. Seas 3 to 4 ft. Showers likely. .THU NIGHT AND FRI...NE winds around 5 kt, becoming E. Seas 2 to 4 ft. .FRI NIGHT...SE winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ283-190600- Ocean Waters from Montauk NY to Marthas Vineyard from 25 to 60 NM- 104 PM EDT Mon May 18 2026 .THIS AFTERNOON...S winds 10 to 15 kt. Seas around 3 ft. Wave Detail: SW 3 ft at 7 seconds and NE 2 ft at 4 seconds. Patchy fog. Vsby 1 NM or less. .TONIGHT...SW winds around 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: SW 4 ft at 5 seconds and SE 2 ft at 9 seconds. Patchy fog in the evening, then patchy dense fog after midnight. Vsby 1 NM or less. .TUE...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: SW 5 ft at 6 seconds and SE 2 ft at 9 seconds. Patchy fog. Vsby 1 NM or less. .TUE NIGHT...SW winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to 7 ft. Wave Detail: SW 7 ft at 6 seconds and SE 4 ft at 9 seconds. Patchy fog. Vsby 1 NM or less. .WED...SW winds around 20 kt with gusts up to 25 kt. Seas 6 to 7 ft. Wave Detail: SW 6 ft at 6 seconds and SE 2 ft at 9 seconds. .WED NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt, becoming NW 10 to 15 kt after midnight. Seas 5 to 7 ft, subsiding to 4 to 5 ft after midnight. Wave Detail: SW 6 ft at 7 seconds and SE 2 ft at 9 seconds, becoming SW 5 ft at 7 seconds and SE 2 ft at 9 seconds. A chance of showers. .THU...NE winds 10 to 15 kt. Seas 3 to 4 ft. A chance of showers. .THU NIGHT AND FRI...E winds 5 to 10 kt. Seas 2 to 3 ft. .FRI NIGHT...SE winds 10 to 15 kt. Seas 3 to 5 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ For the latest updates...please visit our webpage at www.weather.gov/boston You can follow us on Facebook at www.facebook.com/us.nationalweatherservice.boston.gov You can follow us on Twitter at @NWSBoston  285 FZAK51 PAJK 181708 AAA CWFAJK Coastal Waters Forecast for Southeast Alaska...UPDATED National Weather Service Juneau AK 908 AM AKDT Mon May 18 2026 Southeast Alaska Inside Waters from Dixon Entrance to Skagway Wind forecasts reflect the predominant speed and direction expected. Sea forecasts represent the average of the highest one-third of the combined windwave and swell height. PKZ098-190230- 908 AM AKDT Mon May 18 2026 .SYNOPSIS FOR SOUTHEAST ALASKA INNER CHANNELS COASTAL WATERS... A front weakens and pushes into the panhandle Monday with winds and seas diminishing over the eastern Gulf of Alaska by Tuesday. Another system moves into the northern gulf late Tuesday into Wednesday. $$ PKZ011-190230- Glacier Bay- 908 AM AKDT Mon May 18 2026 UPDATED .TODAY...Light winds becoming S 15 kt in the afternoon. Seas 3 ft. .TONIGHT...S wind 15 kt. Seas 3 ft in the evening then 2 ft or less. .TUE...SE wind 10 kt. Seas 2 ft or less. Rain. .TUE NIGHT...SE wind 10 kt. Seas 2 ft or less. Patchy dense fog. Rain showers. .WED...E wind 15 kt. Seas 2 ft or less. .THU...S wind 15 kt. Seas 3 ft. .FRI...SE wind 10 kt. Seas 2 ft or less. $$ PKZ012-190230- Northern Lynn Canal- 908 AM AKDT Mon May 18 2026 UPDATED .TODAY...S wind 20 kt. Seas 4 ft. Rain showers. .TONIGHT...S wind 20 kt. Seas 4 ft. Rain. .TUE...S wind 15 kt. Seas 3 ft. .TUE NIGHT...S wind 15 kt. Seas 3 ft. Rain showers. .WED...S wind 15 kt. Seas 3 ft. .THU...S wind 20 kt. Seas 3 ft. .FRI...S wind 15 kt. Seas 3 ft. $$ PKZ013-190230- Southern Lynn Canal- 908 AM AKDT Mon May 18 2026 UPDATED .TODAY...S wind increasing to 15 kt. Seas 3 ft. Rain showers. .TONIGHT...S wind 15 kt. Seas 3 ft. Rain. .TUE...SE wind 15 kt. Seas 3 ft. Rain in the afternoon. .TUE NIGHT...SE wind 15 kt. Seas 3 ft. Rain showers. .WED...SE wind 20 kt. Seas 4 ft. .THU...S wind 15 kt. Seas 3 ft. .FRI...S wind 15 kt. Seas 3 ft. $$ PKZ021-190230- Icy Strait- 908 AM AKDT Mon May 18 2026 UPDATED .TODAY...SE wind 10 kt becoming SW 15 kt. Seas building to 3 ft. Rain early in the morning. .TONIGHT...S wind 15 kt. Seas 3 ft in the evening then 2 ft or less. .TUE...SE wind 10 kt. Seas 2 ft or less. Rain in the afternoon. .TUE NIGHT...E wind 15 kt. Seas 3 ft. Rain showers. .WED...E wind 20 kt. Seas 4 ft. .THU...SW wind 15 kt. Seas 3 ft. .FRI...SE wind 10 kt. Seas 2 ft or less. $$ PKZ022-190230- Cross Sound- 908 AM AKDT Mon May 18 2026 UPDATED .TODAY...W wind 15 kt. Seas 7 ft. SW swell. .TONIGHT...SW wind 15 kt. Seas 7 ft. SW swell in the evening. .TUE...SE wind 10 kt. Seas 6 ft. Rain. .TUE NIGHT...E wind 10 kt. Seas 5 ft. Rain showers. .WED...E wind 15 kt. Seas 8 ft. .THU...SW wind 20 kt. Seas 8 ft. .FRI...W wind 10 kt. Seas 7 ft. $$ PKZ031-190230- Stephens Passage- 908 AM AKDT Mon May 18 2026 UPDATED .TODAY...S wind 15 kt diminishing in the afternoon. Seas 3 ft. Rain showers. .TONIGHT...S wind 10 kt. Seas 2 ft or less. .TUE...S wind 10 kt. Seas 2 ft or less. .TUE NIGHT...SE wind 20 kt. Seas 3 ft. Rain showers. .WED...SE wind 30 kt. Seas 6 ft. .THU...S wind 10 kt. Seas 2 ft or less. .FRI...SE wind 15 kt. Seas 3 ft. $$ PKZ032-190230- Northern Chatham Strait- 908 AM AKDT Mon May 18 2026 UPDATED .TODAY...SW wind 10 kt, except NW near the southern end. Seas 2 ft or less. Rain. .TONIGHT...NW wind 10 kt becoming SW late. Seas 2 ft or less. .TUE...S wind 10 kt. Seas 2 ft or less. Rain in the afternoon. .TUE NIGHT...SE wind 15 kt. Seas 3 ft. Rain showers. .WED...SE wind 25 kt. Seas 5 ft. .THU...SW wind 10 kt. Seas 2 ft or less. .FRI...S wind 10 kt. Seas 2 ft or less. $$ PKZ033-190230- Southern Chatham Strait- 908 AM AKDT Mon May 18 2026 UPDATED .TODAY...W 10 kt, except 20 kt near the ocean entrance. Seas 2 ft or less, except 9 ft near ocean entrances. .TONIGHT...SW wind 10 kt. Seas 2 ft or less, except 7 ft near ocean entrances. .TUE...S wind 10 kt. Seas 2 ft or less, except 6 ft near ocean entrances. Rain in the afternoon. .TUE NIGHT...S wind 15 kt. Seas 3 ft, except 6 ft near ocean entrances. Showers. .WED...SE wind 25 kt. Seas 5 ft. .THU...SW wind 10 kt. Seas 2 ft or less. .FRI...S wind 10 kt. Seas 3 ft. $$ PKZ034-190230- Frederick Sound- 908 AM AKDT Mon May 18 2026 UPDATED .TODAY...S wind 15 kt becoming SW 10 kt. Seas 3 ft. Rain. .TONIGHT...SW wind 10 kt. Seas 2 ft or less. Patchy fog with visibility 1 NM or less late. .TUE...S wind 10 kt. Seas 2 ft or less. Patchy fog in the morning. .TUE NIGHT...SE wind 15 kt. Seas 3 ft. Rain showers. .WED...SE wind 25 kt. Seas 5 ft. .THU...S wind 10 kt. Seas 2 ft or less. .FRI...S wind 15 kt. Seas 3 ft. $$ PKZ035-190230- Sumner Strait- 908 AM AKDT Mon May 18 2026 UPDATED .TODAY...SE wind 15 kt becoming W in the morning. Near the ocean entrance, W wind 20 kt. Seas 3 ft, except 6 ft near ocean entrances. Rain. .TONIGHT...W wind 10 kt. Seas 2 ft or less, except 5 ft near ocean entrances. Patchy fog with visibility 1 NM or less late. .TUE...Light winds becoming SW 10 kt in the afternoon. Seas 2 ft or less, except 4 ft near ocean entrances. Patchy fog in the morning. .TUE NIGHT...S wind 10 kt. Seas 2 ft or less. Showers. .WED...SE wind 20 kt. Seas 4 ft. .THU...SW wind 10 kt. Seas 2 ft or less. .FRI...S wind 10 kt. Seas 2 ft or less. $$ PKZ036-190230- Clarence Strait- 908 AM AKDT Mon May 18 2026 UPDATED .TODAY...S wind 20 kt becoming NW 10 kt in the afternoon. Seas 6 ft. Rain. .TONIGHT...NW wind 15 kt becoming variable 10 kt late. Seas 3 ft in the evening then 2 ft or less. Near ocean entrances, seas 6 ft. Areas of fog with visibility 1 NM or less late. .TUE...Light winds becoming SW 10 kt in the afternoon. Seas 2 ft or less, except 4 ft near ocean entrances. Patchy fog in the morning. .TUE NIGHT...W wind 10 kt. Seas 2 ft or less. .WED...SE wind 30 kt. Seas 6 ft. .THU...W wind 10 kt. Seas 2 ft or less. .FRI...S wind 15 kt. Seas 3 ft. $$  010 FZAK53 PAJK 181716 AAA CWFYAK Marine Forecast for Yakutat Bay...UPDATED National Weather Service Juneau AK 916 AM AKDT Mon May 18 2026 Coastal Waters Forecast for Yakutat Bay Wind forecasts reflect the predominant speed and direction expected. Sea forecasts represent the average of the highest one-third of the combined windwave and swell height. PKZ053-191130- Yakutat Bay- 916 AM AKDT Mon May 18 2026 UPDATED .TODAY...SW wind 10 kt. Seas 7 ft. SW swell. .TONIGHT...Light winds becoming E 15 kt late. Seas 7 ft. SW swell in the evening. Rain. .TUE...E wind 20 kt. Seas 6 ft. Rain. .TUE NIGHT...E wind 25 kt. Seas 7 ft. Patchy dense fog. Rain showers. .WED...E wind 25 kt. Seas 7 ft. .THU...SW wind 10 kt. Seas 7 ft. .FRI...E wind 15 kt. Seas 7 ft. $$  918 FZZS50 NSTU 181755 CWFPPG Coastal Waters Forecast National Weather Service Pago Pago AS 655 AM SST Mon May 18 2026 American Samoa coastal waters out to 40 nautical miles including National Marine Sanctuary of American Samoa PSZ100-190645- 655 AM SST Mon May 18 2026 .Synopsis for American Samoa coastal waters...A trough will linger over the area through at least tonight. Seas and winds are higher near thunderstorms. $$ PSZ152-154>159-190645- Swains Island-Pago Pago Harbor- Northern Coastal waters of Tutuila and Aunuu- Southern Coastal waters of Tutuila and Aunuu- Northern Coastal waters of Manua-Southern Coastal waters of Manua- Coastal waters of Rose Atoll- 655 AM SST Mon May 18 2026 ...A Small Craft Advisory remains in effect... .TODAY...East wind 10 to 15 knots. Seas 7 to 9 feet. Widespread showers and isolated thunderstorms. .TONIGHT...North wind 10 to 15 knots, veering to south after midnight. Seas 7 to 9 feet. Numerous showers and isolated thunderstorms. .TUESDAY THROUGH WEDNESDAY NIGHT...Variable wind up to 10 knots. Seas 5 to 7 feet. Scattered showers. .THURSDAY AND FRIDAY...South wind 10 knots. Seas 5 to 7 feet. Scattered showers. $$ The next scheduled forecast will be issued at 300 PM SST. For the other forecasts and model data go to our web page http://www.weather.gov/ppg && .VAAIGA LAUTELE O LE TAU MO GATAIFALE O AMERIKA SAMOA...E tumau uiga louloua o le tau e oo i le po nanei. E maualuluga sami ma malolosi savili e lata i faititili. ...O loo faaauau Fautuaga mo Va'a Laiti... .LE ASO...Savili mai sasa'e 10 i le 15 note. Sami e 7 i le 9 futu. E tetele timuga ma e pa pa nai faititili. .PO NANEI...Savili mai matu 10 i le 15 note, ona agi mai lea i saute i le te'a o le vaeluaga o le po. Sami e 7 i le 9 futu. E toulu timuga ma e pa pa nai faititili. .ASO LUA E OO I LE PO ASO LULU...Savili e agi le lautasi e oo i le 10 note. Sami e 5 i le 7 futu. E ta'ape solo timu. .ASO TOFI MA LE ASO FARAILE...Savili mai saute 10 note. Sami e 5 i le 7 futu. E ta'ape solo timu. $$