Good morning, There is the threat of tropical downpours this evening which could contribute to localized flooding. - Rainfall amounts of 1 to 2 inches in roughly a 3 to 6 hour window are possible. - Rainfall developing around 8 pm, the heaviest occurring around 10 pm to 2 am, concluding around 4 am. We've attached a document which highlights the upper-end and lower-end of rainfall possibilities along with our expected forecast. Should you have any additional questions, comments and/or concerns, please don't hesitate to reach out to us. Respectfully, Benjamin Sipprell Meteorologist NWS Boston / Norton 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>