Gavin Newsom declared a state of emergency in six counties after a massive atmospheric river killed at least three people and forced hundreds to evacuate on Christmas Eve.The powerful winter storm, known as the Pineapple Express, triggered mudslides and debris flows in regions scarred by recent wildfires, leading to dramatic rescues in towns like Wrightwood.Infrastructure damage left over 125,000 customers without power as the NWS warned of potentially the wettest Christmas in years for Southern California.