A powerful atmospheric river is bringing heavy rain to California, prompting evacuation orders in fire-scarred areas. Southern California could see up to 6 inches of rain, raising concerns for flooding and mudslides. Authorities have stepped up emergency measures, including sandbag distribution and evacuation preparations, as many areas remain vulnerable due to recent wildfires. The National Weather Service warns of potential flash flooding and debris flows, putting communities at risk. In Oregon, similar weather conditions are creating dangers as freezing rain and snow threaten power outages and treacherous road conditions.