LOS ANGELES - Southern California braced as an atmospheric river that’s brought heavy rainfall and flooding to the West continued moving down the coast amid the Thanksgiving holiday travel period. PREVIOUS COVERAGE: California rain ramping up as ...

A bomb cyclone occurs when a storm's pressure drops quickly, which intensifies the storm and ramps up wind gusts. Atmospheric rivers are a "long, narrow region in the atmosphere—like rivers in the sky—that transport most of the water vapor outside of the tropics," according to the National Oceanic and Atmospheric Administration.