NWS Marine Forecast



 Hazardous marine condition(s):
 Small Craft Advisory
   ANZ232-201800-  Nantucket Sound-  106 AM EDT Fri Mar 20 2026    SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH LATE  TONIGHT    REST OF TONIGHT  SW winds around 10 kt. Seas around 2 ft. Wave  Detail: W 1 foot at 3 seconds and SE 1 foot at 9 seconds.  FRI  W winds 5 to 10 kt, becoming S 15 to 20 kt with gusts up  to 25 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: SW 2 ft  at 3 seconds and SE 1 foot at 9 seconds.  FRI NIGHT  SW winds 15 to 20 kt with gusts up to 30 kt. Seas  3 to 4 ft. Wave Detail: SW 4 ft at 4 seconds and SE 1 foot at  9 seconds. Showers.  SAT  W winds 10 to 15 kt, becoming N in the afternoon. Gusts up  to 20 kt. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 7 seconds and N  1 foot at 2 seconds. A chance of showers in the morning.  SAT NIGHT  N winds 5 to 10 kt, becoming W after midnight. Seas  2 to 3 ft. Wave Detail: N 1 foot at 3 seconds and SW 1 foot at  7 seconds.  SUN  S winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft  at 4 seconds and N 1 foot at 4 seconds.  SUN NIGHT  SW winds 10 to 15 kt, becoming S 15 to 20 kt after  midnight. Seas 2 to 3 ft. A chance of rain in the evening, then  rain likely after midnight.  MON  N winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to  4 ft. Rain likely.  MON NIGHT THROUGH TUE NIGHT  SW winds 15 to 20 kt. Seas 2 to  4 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.    $$