Hazardous marine condition(s):
Small Craft Advisory
ANZ200-210300-
1003 AM EDT Sun Sep 20 2026
.Synopsis for Massachusetts and Rhode Island coastal waters...
Low pres system brings the threat of widespread rain, especially the
southern waters tomorrow. High pres builds in from the N early next
week with the distant system off shore, this could provide a period
of strong easterly wind, near gale force, Tue into Wed. There is
potential for a coastal low to track northward late week bringing
strong winds and rough seas but confidence is low in the exact track
and thus impacts.
$$
ANZ254-210300- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 NM- 1003 AM EDT Sun Sep 20 2026 SMALL CRAFT ADVISORY IN EFFECT FROM MONDAY MORNING THROUGH MONDAY EVENING THIS AFTERNOON SE winds around 10 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at 4 seconds and W 1 foot at 4 seconds. Patchy fog. Rain likely. TONIGHT E winds around 10 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 4 seconds and SE 2 ft at 10 seconds. Patchy fog. Rain. Vsby 1 to 3 NM after midnight. MON NE winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft, building to 4 to 5 ft in the afternoon. Wave Detail: NE 3 ft at 4 seconds and SE 2 ft at 9 seconds, becoming N 4 ft at 6 seconds and SE 2 ft at 8 seconds. Patchy fog in the morning. A chance of rain in the morning with vsby 1 to 3 NM. MON NIGHT NE winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: N 4 ft at 5 seconds and SE 2 ft at 8 seconds. TUE NE winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: NE 5 ft at 6 seconds and SE 2 ft at 15 seconds. TUE NIGHT NE winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to 6 ft. Wave Detail: E 6 ft at 8 seconds and E 6 ft at 14 seconds. WED NE winds 20 to 25 kt with gusts up to 30 kt. Seas 6 to 9 ft. WED NIGHT NE winds 25 to 30 kt with gusts up to 35 kt. Seas 8 to 11 ft. THU NE winds 25 to 30 kt with gusts up to 40 kt. Seas 10 to 14 ft. A chance of showers. THU NIGHT NE winds 25 to 35 kt with gusts up to 40 kt. Seas 12 to 16 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$
ANZ254-210300- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 NM- 1003 AM EDT Sun Sep 20 2026 SMALL CRAFT ADVISORY IN EFFECT FROM MONDAY MORNING THROUGH MONDAY EVENING THIS AFTERNOON SE winds around 10 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at 4 seconds and W 1 foot at 4 seconds. Patchy fog. Rain likely. TONIGHT E winds around 10 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 4 seconds and SE 2 ft at 10 seconds. Patchy fog. Rain. Vsby 1 to 3 NM after midnight. MON NE winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft, building to 4 to 5 ft in the afternoon. Wave Detail: NE 3 ft at 4 seconds and SE 2 ft at 9 seconds, becoming N 4 ft at 6 seconds and SE 2 ft at 8 seconds. Patchy fog in the morning. A chance of rain in the morning with vsby 1 to 3 NM. MON NIGHT NE winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: N 4 ft at 5 seconds and SE 2 ft at 8 seconds. TUE NE winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: NE 5 ft at 6 seconds and SE 2 ft at 15 seconds. TUE NIGHT NE winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to 6 ft. Wave Detail: E 6 ft at 8 seconds and E 6 ft at 14 seconds. WED NE winds 20 to 25 kt with gusts up to 30 kt. Seas 6 to 9 ft. WED NIGHT NE winds 25 to 30 kt with gusts up to 35 kt. Seas 8 to 11 ft. THU NE winds 25 to 30 kt with gusts up to 40 kt. Seas 10 to 14 ft. A chance of showers. THU NIGHT NE winds 25 to 35 kt with gusts up to 40 kt. Seas 12 to 16 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. $$