From the National Weather Service:
Special Weather Statement National Weather Service Boston/Norton MA 305 PM EDT Mon Jun 10 2019 CTZ002>004-MAZ002>024-026-RIZ001>008-110330- Hartford CT-Tolland CT-Windham CT-Western Franklin MA- Eastern Franklin MA-Northern Worcester MA-Central Middlesex MA- Western Essex MA-Eastern Essex MA-Western Hampshire MA- Western Hampden MA-Eastern Hampshire MA-Eastern Hampden MA- Southern Worcester MA-Western Norfolk MA-Southeast Middlesex MA- Suffolk MA-Eastern Norfolk MA-Northern Bristol MA- Western Plymouth MA-Eastern Plymouth MA-Southern Bristol MA- Southern Plymouth MA-Barnstable MA-Dukes MA-Nantucket MA- Northern Middlesex MA-Northwest Providence RI- Southeast Providence RI-Western Kent RI-Eastern Kent RI- Bristol RI-Washington RI-Newport RI-Block Island RI- Including the cities of Hartford, Windsor Locks, Union, Vernon, Putnam, Willimantic, Charlemont, Greenfield, Orange, Barre, Fitchburg, Framingham, Lowell, Lawrence, Gloucester, Chesterfield, Blandford, Amherst, Northampton, Springfield, Milford, Worcester, Foxborough, Norwood, Cambridge, Boston, Quincy, Taunton, Brockton, Plymouth, Fall River, New Bedford, Mattapoisett, Chatham, Falmouth, Provincetown, Vineyard Haven, Nantucket, Ayer, Foster, Smithfield, Providence, Coventry, West Greenwich, East Greenwich, Warwick, West Warwick, Bristol, Narragansett, Westerly, Newport, and New Shoreham 305 PM EDT Mon Jun 10 2019 ...HEAVY RAINFALL MAY RESULT IN LOCALIZED FLOODING TONIGHT INTO TUESDAY MORNING... Periods of heavy showers and embedded thunderstorms will bring localized heavy rainfall tonight into Tuesday morning. One period of rain is expected to move through southern New England from southwest to northeast this evening into the early morning hours, then another area of locally heavy rainfall will accompany a cold front Tuesday morning. Rainfall amounts of 0.50 to 1.50 inches are expected. However, localized amounts exceeding 2 inches are possible where heavy showers or thunderstorms move over the same areas. This will bring the potential for localized urban and poor drainage street flooding which may impact the Tuesday morning commute. Where the heaviest rain falls is uncertain and could occur anywhere in southern New England. Motorists should be prepared for periods of heavy rainfall and localized poor drainage street flooding this evening into Tuesday morning.