Millions of people across Southern California are under a Red Flag warning as a dangerous windstorm starting Tuesday could bring widespread destruction and extreme fire risk to the area, with emergency services braced to provide a huge response.

Experts warn that Southern California will face the most destructive windstorm on Tuesday in over a decade. In addition to powerful winds, the storm is expected to bring life-threatening conditions, including the potential for wildfires in the affected areas.

Although the strongest wind gusts have passed through the Southern California region, another "traditional Santa Ana wind event" will move in Thursday night.