NWS Marine Forecast


   ANZ200-221500-  1003 PM EDT Mon Sep 21 2026    .Synopsis for Massachusetts and Rhode Island coastal waters...  An anomalous area of high pres builds in from the north early this  week with a distant system off shore, which will provide a period of  strong E to NE wind near gale force, Tue afternoon into Wed. There  is potential for a coastal low to track northward New England late  week bringing strong winds and rough seas, which could linger into  the upcoming weekend.    $$
   ANZ230-221500-  Boston Harbor-  1003 PM EDT Mon Sep 21 2026    OVERNIGHT  NE winds around 5 kt, increasing to 15 to 20 kt.  Waves 1 foot or less, then 2 to 3 ft.  TUE  NE winds 15 to 20 kt. Waves 2 to 3 ft.  TUE NIGHT  NE winds 10 to 15 kt, increasing to 15 to 20 kt  after midnight. Gusts up to 25 kt. Waves 2 to 3 ft.  WED  NE winds 15 to 20 kt with gusts up to 30 kt. Waves 2 to  3 ft.  WED NIGHT AND THU  NE winds 20 to 25 kt with gusts up to 30 kt.  Waves 2 to 3 ft, except 4 to 6 ft at the outer harbor entrance.  THU NIGHT  NE winds 15 to 20 kt, increasing to 25 to 30 kt  after midnight. Waves 2 to 3 ft, except 4 to 6 ft at the outer  harbor entrance. A chance of showers after midnight.  FRI AND FRI NIGHT  NE winds 25 to 30 kt with gusts up to 45 kt.  Waves 2 to 3 ft, except 5 to 7 ft at the outer harbor entrance.  Showers likely.  SAT AND SAT NIGHT  N winds 25 to 30 kt with gusts up to 40 kt.  Waves around 2 ft, except 5 to 7 ft at the outer harbor entrance.  Showers likely.    Seas are reported as significant wave height, which is the  average of the highest third of the waves. Individual wave  heights may be more than twice the significant wave height.    $$