Santa Ana winds in Southern California are often-fierce winds that topple power lines and trees and can turn a spark into a raging wildfire.

Red Flag Warnings remain in effect through Friday evening for much of Los Angeles and Ventura Counties, the National Weather Service said.

Fire crews in Los Angeles have gotten a brief reprieve from brutal Santa Ana winds that have been fueling five wildfires. At least three are still raging at zero containment, and nearly 180,00 people are under mandatory evacuation orders,