Power was restored on Christmas day to all but about 2,000 of the 21,000 customers who had lost power the night before, according to PG&E.

The atmospheric river will be most severe on Friday, with a flood watch already in effect today through Sunday, a wind advisory today and tomorrow for the entire Bay Area and Gov. Gavin Newsom declaring a state of emergency for Santa Clara and 20 other counties.

Gov. Newsom is considering seeking federal funds to keep Diablo Canyon nuclear power plant open as the state transitions away from fossil fuels. But there are many complications to keeping nuclear power in California.