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,

I-93 was essentially a river Thursday morning as torrential downpours dumped up to six inches of rain across eastern Massachusetts. As you probably heard from your phone's alert system screaming at you,

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.