First Alert Forecast January 4, 2023 3:43 pm What is a Bomb Cyclone or Atmospheric River? Here's What to Know With SoCal’s storm weather, you might be wondering what these terms mean. Shanna Mendiola explains Wednesday, Jan. 4, 2023. US & World Videos 3:18 USC's commencement preparation includes increased security patrol 1:56 1 person killed after car crashes into South LA church 3:30 Protest on USC campus continues ahead of graduation 0:43 LA County releases sterile mosquitoes as warmer weather nears 2:42 Days before USC commencement, protesters still camped out on campus