Good afternoon, Following is an updated briefing regarding the expected periods of heavy rainfall for tonight into early Tuesday morning. *Significant Changes Since Last Briefing*: - *Flood Watch Expanded into Much of Rhode Island, In Effect Monday Morning to Tuesday Morning.* - *Increased Storm Total Rain Amounts, especially into western MA and CT.* - *Expansion of WPC's Moderate Risk Excessive Rain Outlook valid for Monday into portions of Rhode Island.* Showers and thunderstorms producing heavy rain are ongoing across eastern NY and into western sections of CT and MA. These rains will shift northeast this evening and overnight with the greatest risk for excessive rainfall capable of flash flooding tonight mainly into the Berkshires and into western sections of CT and MA, and will be ongoing into Monday night. Heavy to locally excessive rains capable of flash flooding are then expected to develop eastward into central MA and RI on Monday, with a more limited risk for flooding of urban and poor drainage areas into eastern MA. The greatest risk for SIGNIFICANT flooding is in interior western sections of MA and CT. Larger rivers and smaller streams are expected to rise in the face of heavy rains tonight into Tuesday. The most significant rises are anticipated in interior western New England, and river levels may remain elevated after cessation of heavy rains. Rivers that are potentially at risk of reaching or exceeding bankfull include the Connecticut, Housatonic, Hoosic, Westfield, Deerfield and Farmington River basins. River Observations and Forecasts can be monitored at the Northeast River Forecast Center webpage linked here: Northeast River Forecast Center <https://www.weather.gov/nerfc/> Expect our next update by 600 AM Monday. Thank You! Meteorologists: Andrew Loconto, Bill Leatham and Kyle Pederson If you have any questions or would like more information, don't hesitate to contact us via this email address, on NWSChat <https://nwschat.weather.gov/>, or at the following: National Weather Service Boston/Norton, MA 46 Commerce Way Norton, MA 02766 508.622.3280 Website <http://www.weather.gov/boston> | Facebook <http://www.facebook.com/NWSBoston> | Twitter <http://www.twitter.com/NWSBoston>
