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.

Flash floods hit several cities and towns south of Boston Thursday morning as historic rain brought traffic to a crawl and clogged streets and highways during rush hour.With rain coming down so fast,

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