Residents of California are bracing for a prolonged period of light to moderate rainfall this weekend, following a powerful atmospheric river event that caused flooding and forced many to flee their homes. The release of water from Lake Oroville is a precautionary measure against possible spillover and flooding, and is the latest in a winter weather whiplash for the state. Saturday is not expected to bring the same torrential rain as Friday, but the Weather Prediction Center has advised residents to take caution and prepare for the incoming rainfall.