ANZ200-221200-
705 PM EDT Thu May 21 2026
.Synopsis for Massachusetts and Rhode Island coastal waters...
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. Gusty winds Sunday as low pressure passes
over the waters.
$$
ANZ232-221200- Nantucket Sound- 705 PM EDT Thu May 21 2026 TONIGHT SE winds around 5 kt, becoming NE after midnight. Seas around 2 ft. Wave Detail: E 1 foot at 3 seconds and W 1 foot at 5 seconds. FRI NE winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: NE 2 ft at 4 seconds and SW 1 foot at 7 seconds. FRI NIGHT E winds 5 to 10 kt. Seas around 2 ft in the evening, then 1 foot or less. Wave Detail: E 1 foot at 3 seconds and NW 1 foot at 6 seconds, becoming E 1 foot at 4 seconds and NW 1 foot at 6 seconds. SAT E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: NW 1 foot at 3 seconds and E 1 foot at 4 seconds. SAT NIGHT E winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Seas 2 to 3 ft. Wave Detail: E 2 ft at 3 seconds and N 1 foot at 3 seconds. A chance of showers in the evening, then showers likely after midnight. SUN AND SUN NIGHT SE winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to 5 ft. Wave Detail: SE 5 ft at 6 seconds and SW 1 foot at 10 seconds. Showers. MON AND MON NIGHT NW winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers. TUE AND TUE NIGHT NW winds 5 to 10 kt, becoming SW. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$
ANZ232-221200- Nantucket Sound- 705 PM EDT Thu May 21 2026 TONIGHT SE winds around 5 kt, becoming NE after midnight. Seas around 2 ft. Wave Detail: E 1 foot at 3 seconds and W 1 foot at 5 seconds. FRI NE winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: NE 2 ft at 4 seconds and SW 1 foot at 7 seconds. FRI NIGHT E winds 5 to 10 kt. Seas around 2 ft in the evening, then 1 foot or less. Wave Detail: E 1 foot at 3 seconds and NW 1 foot at 6 seconds, becoming E 1 foot at 4 seconds and NW 1 foot at 6 seconds. SAT E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: NW 1 foot at 3 seconds and E 1 foot at 4 seconds. SAT NIGHT E winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Seas 2 to 3 ft. Wave Detail: E 2 ft at 3 seconds and N 1 foot at 3 seconds. A chance of showers in the evening, then showers likely after midnight. SUN AND SUN NIGHT SE winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to 5 ft. Wave Detail: SE 5 ft at 6 seconds and SW 1 foot at 10 seconds. Showers. MON AND MON NIGHT NW winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers. TUE AND TUE NIGHT NW winds 5 to 10 kt, becoming SW. 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. $$