weather December 23, 2020 11:54 am What Is Snowpack? Around the country, people rely on these piles of snow for their water supply. What is a snowpack, and how else does it impact you? US & World Videos 2:41 Attack leaves woman brain dead, family demands justice 2:40 Man killed on Metro bus was tourist from Mexico 0:55 Thieves hit convenience stores in Orange County 2:33 Man steals LAPD cruiser with officer inside 2:24 Man steals LAPD patrol SUV in downtown LA