ANZ200-210300-
1004 AM EDT Mon Jul 20 2026
.Synopsis for Massachusetts and Rhode Island coastal waters...
High pres and very tranquil boating weather develops for tonight and
Mon. Unsettled weather in the form of showers and thunderstorms
returns to the MA/RI waters late Tue and into Wed. A cold front
should cross the waters by Thu afternoon. A high pres should arrive
for Fri.
$$
ANZ230-210300- Boston Harbor- 1004 AM EDT Mon Jul 20 2026 THIS AFTERNOON SW winds around 5 kt, becoming SE 10 to 15 kt. Waves 1 foot or less, then around 2 ft. TONIGHT S winds 5 to 10 kt. Waves around 2 ft in the evening, then 1 foot or less. TUE S winds 5 to 10 kt, becoming SE 10 to 15 kt with gusts up to 20 kt in the afternoon. Waves 2 to 3 ft. TUE NIGHT S winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. Showers with a chance of tstms. WED SW winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. Showers likely. A chance of tstms in the morning. WED NIGHT W winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Waves around 2 ft in the evening, then 1 foot or less. A chance of showers in the evening. THU THROUGH FRI NIGHT SW winds 5 to 10 kt. Waves 1 foot or less. Winds and waves higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$
ANZ230-210300- Boston Harbor- 1004 AM EDT Mon Jul 20 2026 THIS AFTERNOON SW winds around 5 kt, becoming SE 10 to 15 kt. Waves 1 foot or less, then around 2 ft. TONIGHT S winds 5 to 10 kt. Waves around 2 ft in the evening, then 1 foot or less. TUE S winds 5 to 10 kt, becoming SE 10 to 15 kt with gusts up to 20 kt in the afternoon. Waves 2 to 3 ft. TUE NIGHT S winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. Showers with a chance of tstms. WED SW winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. Showers likely. A chance of tstms in the morning. WED NIGHT W winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Waves around 2 ft in the evening, then 1 foot or less. A chance of showers in the evening. THU THROUGH FRI NIGHT SW winds 5 to 10 kt. Waves 1 foot or less. Winds and waves higher in and near tstms. 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. $$