California utility officials are warning that hackers are increasingly targeting utilities with cyber attacks that could leave millions of people without electricity, water and other vital services.
As the latest in a series of storms to hit the Bay Area continued to move south, PG&E worked to restore electricity to more than 20,000 customers who lost power.
More than 2,000 residents of Treasure Island and Yerba Buena Island have endured more than two dozen power outages this year. Now the San Francisco Public Utilities Commission is looking into the problem.
Power was mostly restored to thousands of customers in the East Bay affected by numerous weather-caused outages Friday night and early Saturday.
PG&E crews are having a difficult time getting to some spots because of the terrain they are encountering.
More than 21,000 PG&E customers remained without power in Santa Cruz County as of late Friday morning, as well as hundreds in the Bay Area.
A tornado destroyed a wood and corrugated metal shed at a business in Santa Rosa Friday morning, while hail was reported in parts of East Bay Friday night.
The Bay Area began to dry out Wednesday morning after a night of wind and rain that left thousands of people without power.