Expires:202101220400;;265559 FZUS51 KBOX 211516 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 1016 AM EST Thu Jan 21 2021 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-220400- 1016 AM EST Thu Jan 21 2021 .Synopsis for Massachusetts and Rhode Island coastal waters... Weak high pres gives way to weak low pres which approaches the waters tonight. Cold front crosses the waters on Fri before high pres builds in from the Great Lakes for the weekend. For additional information on possible hazardous weather for the week ahead, please visit www.weather.gov/boston/ehwo. $$