"California on High Alert as Massive Storm Threatens Flooding and Mudslides"

Southern California is preparing for heavy rain and potential flooding as an atmospheric river brings moderate to heavy rain later this week, with the heaviest rainfall expected on Thursday and Friday. This storm, influenced by El-Niño, will be the region's largest rainstorm since Hurricane Hilary in August. Mudslides, power outages, and wet snow in higher elevation areas are also possible. A flood watch is in effect for an area where approximately 22 million people reside, including Los Angeles and San Diego.