ANZ200-221500-
1005 PM EDT Fri Aug 21 2026
.Synopsis for Massachusetts and Rhode Island coastal waters...
Weak low pres lingers SE of the Cape and Nantucket through Sat along
a stalled front. High pres pushes this front farther offshore
sometime Mon into Mon night. This high pres should remain over the
waters through Wed.
$$
ANZ231-221500- Cape Cod Bay- 1005 PM EDT Fri Aug 21 2026 OVERNIGHT NE winds 10 to 15 kt. Gusts up to 20 kt. Seas around 2 ft. Wave Detail: NE 2 ft at 3 seconds and N 1 foot at 4 seconds. A chance of showers. SAT NE winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt in the afternoon. Seas around 2 ft. Wave Detail: N 2 ft at 3 seconds and NE 2 ft at 3 seconds. A chance of showers. SAT NIGHT N winds around 5 kt, becoming S after midnight. Seas around 2 ft. Wave Detail: N 1 foot at 4 seconds and S 1 foot at 5 seconds. Patchy fog. A chance of showers after midnight. SUN E winds 5 to 10 kt, becoming S in the afternoon. Seas around 2 ft. Wave Detail: N 1 foot at 4 seconds and NE 1 foot at 4 seconds. A chance of showers. Patchy fog in the morning with vsby 1 to 3 NM. SUN NIGHT THROUGH MON NIGHT SW winds 5 to 10 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: E 2 ft at 7 seconds and S 1 foot at 2 seconds. TUE THROUGH WED NIGHT SW winds 5 to 10 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: W 2 ft at 6 seconds and W 1 foot at 2 seconds. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$
ANZ231-221500- Cape Cod Bay- 1005 PM EDT Fri Aug 21 2026 OVERNIGHT NE winds 10 to 15 kt. Gusts up to 20 kt. Seas around 2 ft. Wave Detail: NE 2 ft at 3 seconds and N 1 foot at 4 seconds. A chance of showers. SAT NE winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt in the afternoon. Seas around 2 ft. Wave Detail: N 2 ft at 3 seconds and NE 2 ft at 3 seconds. A chance of showers. SAT NIGHT N winds around 5 kt, becoming S after midnight. Seas around 2 ft. Wave Detail: N 1 foot at 4 seconds and S 1 foot at 5 seconds. Patchy fog. A chance of showers after midnight. SUN E winds 5 to 10 kt, becoming S in the afternoon. Seas around 2 ft. Wave Detail: N 1 foot at 4 seconds and NE 1 foot at 4 seconds. A chance of showers. Patchy fog in the morning with vsby 1 to 3 NM. SUN NIGHT THROUGH MON NIGHT SW winds 5 to 10 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: E 2 ft at 7 seconds and S 1 foot at 2 seconds. TUE THROUGH WED NIGHT SW winds 5 to 10 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: W 2 ft at 6 seconds and W 1 foot at 2 seconds. 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. $$