California is in full crisis mode as a powerful post-Christmas storm system slams the state with relentless rain, flooding, and mountain snow, triggering evacuations, highway shutdowns, and a statewide emergency declaration from Governor Gavin Newsom. One of the nation’s busiest travel corridors, Interstate 5, is now completely shut down near Penrose Street after floodwaters surged over the roadway and left vehicles stranded in fast-rising water. WATCH