Portions of Franklin and Hampshire counties are under a flash flood warning through 6 p.m. Monday as storms producing heavy rain crawl through the region.

A Flash Flood Warning was issued for several cities and towns south of Boston Thursday morning as heavy rain brought traffic to a crawl and clogged streets and highways.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.