A series of storms is set to impact California, particularly the Bay Area and Southern California, leading up to Christmas. The atmospheric river phenomena will bring heavy rainfall, with forecasters predicting as much as 500 mm in some areas, potentially leading to flooding, landslides, and travel disruptions. The Bay Area can expect a prolonged period of wet weather, with multiple days of rain anticipated and storm systems beginning to roll in soon. Southern California is also bracing for a rainy Christmas, with heavy rain expected on Christmas Eve and Christmas Day. Residents are advised to prepare for significant travel impacts as these weather events unfold, affecting holiday plans and increasing the risk of hazardous conditions.