Los Angeles Mayor Eric Garcetti says some homes have burned in a wildfire on the city's west side but so far there have not been extensive losses.
The fire erupted early Monday morning in Sepulveda Pass, which carries Interstate 405 through the Santa Monica Mountains.
The mayor says the fire is believed to have grown to about 400 acres (162 hectares), pushed by winds from 15-20 mph (24-32 kph).
Fire Department Capt. Erik Scott says about 3,300 homes are threatened in the Mountaingate and Mandeville Canyon areas but mandator evacuation orders have expanded southwestward.
Millions of people in Northern California are on track to have lights come back on, but some may not be restored before another round of strong winds threaten to damage power lines and spark fires.
Electricity is expected to begin being restored by Monday, though Pacific Gas & Electric Co. warned it might cut power again as soon as Tuesday with a forecast of strong winds expected to last until Wednesday.
The utility notified more than 1.2 million people that they may have their electricity shut off for what could be the third time in a week.
Nearly 200,000 people are under evacuation orders as crews grapple with a wildfire in wine country that fire officials say was 85 square miles (220 square kilometers), destroyed 94 buildings and was threatening 80,000 buildings Sunday night.