Millions of people across Southern California are under a Red Flag warning as a dangerous windstorm fanned blazes in the Los Angeles area, including the Palisades Fire, which has triggered evacuations and burned hundreds of acres.

For the third time since early November, parts of Southern California’s Los Angeles and Ventura counties are under a red flag warning for extreme fire danger.

The region’s utility company said it was prepared to cut power to more than 400,000 customers to try to prevent more blazes.