NWS Marine Forecast



 Hazardous marine condition(s):
 Small Craft Advisory
   ANZ200-200000-  704 AM EDT Mon May 19 2025    .Synopsis for Massachusetts and Rhode Island coastal waters...  Upper level low pressure system gradually builds over the waters  through Monday, which will bring increased west to northwest breezes  and hit or miss showers. High pressure then builds in from the  Canadian Maritimes through midweek, with increased onshore flow.  Monitoring a potential coastal gale that could bring enhanced  northeast winds and periods of rain late in the week through the  early part of the upcoming weekend.    $$
   ANZ255-200000-  Coastal Waters extending out to 25 nm South of Marthas Vineyard  and Nantucket-  704 AM EDT Mon May 19 2025    SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT    TODAY  NW winds 20 to 25 kt, diminishing to 10 to 15 kt this  afternoon. Gusts up to 30 kt. Seas 4 to 6 ft. Wave Detail: W 5 ft  at 7 seconds and S 4 ft at 8 seconds.  TONIGHT  NW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to  5 ft. Wave Detail: N 3 ft at 6 seconds and S 2 ft at 8 seconds.  TUE  N winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to  4 ft. Wave Detail: N 3 ft at 5 seconds and S 1 foot at 7 seconds.  TUE NIGHT  NE winds 10 to 15 kt. Gusts up to 20 kt in the  evening. Seas 2 to 4 ft. Wave Detail: NE 2 ft at 5 seconds and NW  1 foot at 4 seconds.  WED  NE winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.  Seas 2 to 4 ft. Wave Detail: NE 3 ft at 6 seconds and SW 1 foot  at 6 seconds.  WED NIGHT  E winds 15 to 20 kt, increasing to 20 to 25 kt after  midnight. Seas 3 to 5 ft, building to 5 to 7 ft after midnight.  Wave Detail: E 4 ft at 5 seconds and SE 1 foot at 9 seconds,  becoming E 5 ft at 5 seconds and SE 1 foot at 9 seconds. A chance  of showers in the evening, then showers likely after midnight  with vsby 1 to 3 NM.  THU  E winds 20 to 25 kt with gusts up to 40 kt. Seas 6 to  9 ft. Showers. Vsby 1 to 3 NM.  THU NIGHT  N winds 20 to 25 kt with gusts up to 30 kt. Seas  6 to 9 ft. Showers likely.  FRI  NW winds 15 to 20 kt. Seas 5 to 7 ft. A chance of showers.  FRI NIGHT  NW winds 10 to 15 kt. Seas 4 to 6 ft. A chance of  showers.    Seas are reported as significant wave height, which is the  average of the highest third of the waves. Individual wave  heights may be more than twice the significant wave height.    $$