Thursday's rain was a highly localized event. The highest impact was only felt over a 5-to-10 mile area south of Boston.

Several Massachusetts communities south of Boston received as much as over 5 inches of rain, with flooding closing several streets and parts of Interstate 93.

Boston, Quincy, Brockton, and other South Shore communities are under a flood watch until 9 a.m., according to the National Weather Service.