Heavy rain and strong winds are battering the Bay Area, prompting various weather alerts and power outages. Early Saturday morning, a tornado warning was issued for downtown San Francisco, with wind gusts of up to 70 mph reported. Thousand of people lost power, with over 10,000 in San Francisco alone. Flooding also occurred, with a flood watch issued for the Petaluma area and a flood warning for the North Bay, including Sonoma, Napa, and Marin counties. A high wind warning was also issued for the San Francisco and Peninsula coast, with gusts of up to 55 mph expected. Power companies reported widespread outages throughout the region, with over 1,000 customers in Menlo Park and downtown Burlingame affected. The National Weather Service issued a flood advisory for the Petaluma area and a coastal flood advisory for areas along the San Francisco and San Pablo bays. Residents were advised to take precautions, including staying away from downed power lines and flooded areas.