From the National Weather Service:
Special Weather Statement National Weather Service Boston/Norton MA 342 AM EDT Mon Jun 10 2019 CTZ002>004-MAZ002>024-026-RIZ001>008-101500- 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 342 AM EDT Mon Jun 10 2019 ...HEAVY RAIN AND A LOCALIZED FLOOD THREAT EXISTS THIS EVENING INTO TUESDAY MORNING... Rain will overspread western Massachusetts and northern Connecticut between 3 and 6 pm this evening, reaching eastern Massachusetts and Rhode Island between 6 and 9 pm this evening. Bands of heavy rain and a few embedded thunderstorms are expected to impact the region this evening into Tuesday morning. This will bring the potential for some poor drainage street flooding. In addition...more significant localized flooding is possible if the heavy rain remains over the same areas for several hours. If confidence increases in heavy rain, a flood watch might be issued later today for portions of southern New England. At the very least...motorists should be prepared for bands of heavy rainfall and some poor drainage street flooding this evening into Tuesday morning.