Some snowflakes were still falling as of around 6:45 a.m. Monday, but National Weather Service forecasters expect the precipitation to stop by daybreak. Snow totals during the storm ranged from 8 inches in Ashfield to less than an inch in most of Barnstable County.

A polar vortex is slated to sweep most of the continental US bringing winter storm warnings and a hazardous freeze to millions.

See which towns have the highest snowfall totals as of Sunday night, and where lightning and thundersnow occurred.