The snow will arrive Saturday between 10 p.m. and midnight. Once it arrives, it will hit the ground running. The majority of the snow accumulation will occur between midnight and 7 a.m. on Sunday. There will be some light snow and flurries between 7 a.m. and noon but very little additional accumulation.

Much of Massachusetts could see as much as a foot of snow fall during Saturday night's snowstorm. Here's when the storm might start and what it means for travel.