California Faces Powerful Winter Storm Threat

Much of California on Monday prepared for a powerful multi-phase winter storm bringing thunderstorms, high winds and heavy mountain snow, officials said. Pacific Gas & Electric said it is using AI- and machine-learning-enhanced weather models to preposition crews and equipment, while state emergency services staged fire and rescue resources; forecasters warned up to 8 feet (2.4 meters) of Sierra snow through late Wednesday. Evacuation warnings targeted some Los Angeles burn-scar neighborhoods at risk of mud and debris flows.