ANZ200-311800-
104 AM EDT Fri Jul 31 2026
.Synopsis for Massachusetts and Rhode Island coastal waters...
Rough seas continue through Fri as low pres approaches from the W
and brings periodic chances for showers and perhaps thunderstorms.
Winds turn NW tonight. Rough seas should start to diminish heading
into the weekend.
$$
ANZ254-311800- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 NM- 104 AM EDT Fri Jul 31 2026 REST OF TONIGHT NW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Wave Detail: N 4 ft at 5 seconds and SE 4 ft at 8 seconds. FRI NW winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: N 3 ft at 5 seconds and SE 3 ft at 9 seconds. FRI NIGHT SW winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: SE 3 ft at 9 seconds and NE 2 ft at 6 seconds. Patchy fog after midnight with vsby 1 NM or less. SAT SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 9 seconds and SW 2 ft at 3 seconds. Patchy fog in the morning with vsby 1 NM or less. SAT NIGHT AND SUN S winds around 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 8 seconds and SW 2 ft at 4 seconds. SUN NIGHT S winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds and SW 2 ft at 3 seconds. A chance of showers after midnight. MON AND MON NIGHT SW winds 15 to 20 kt, becoming W 10 to 15 kt. Gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers. TUE AND TUE NIGHT W winds 5 to 10 kt, becoming SW. Seas 2 to 4 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$
ANZ254-311800- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 NM- 104 AM EDT Fri Jul 31 2026 REST OF TONIGHT NW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Wave Detail: N 4 ft at 5 seconds and SE 4 ft at 8 seconds. FRI NW winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: N 3 ft at 5 seconds and SE 3 ft at 9 seconds. FRI NIGHT SW winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: SE 3 ft at 9 seconds and NE 2 ft at 6 seconds. Patchy fog after midnight with vsby 1 NM or less. SAT SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 9 seconds and SW 2 ft at 3 seconds. Patchy fog in the morning with vsby 1 NM or less. SAT NIGHT AND SUN S winds around 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 8 seconds and SW 2 ft at 4 seconds. SUN NIGHT S winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds and SW 2 ft at 3 seconds. A chance of showers after midnight. MON AND MON NIGHT SW winds 15 to 20 kt, becoming W 10 to 15 kt. Gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers. TUE AND TUE NIGHT W winds 5 to 10 kt, becoming SW. 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. $$