See how rare storm is pummeling California

WATCH: Homes and vehicles buried under mud after flash flooding in California

Video shows aftermath of severe storm in California

Power restored for most after San Francisco outage

Several San Francisco neighborhoods were impacted by a massive power outage on Saturday that left nearly a third of the city without electricity, according to PG&E. During the blackout, Waymo's driverless taxis came to a halt when traffic lights stopped working. #sanfrancisco #waymo #blackout #california

Power has been restored to the homes and businesses of most utility customers affected by a massive outage in San Francisco that darkened the city.