A wildfire raging in California has nearly tripled in size as high temperatures fuel the flames.

The blaze broke out north-west of Los Angeles yesterday.

Convicts have been brought in to help fight the six huge wildfires which have destroyed homes and caused the Pacific Highway to close.

The blazes stormed back through canyons toward inland neighbourhoods when winds reversed direction.

US Forest service division chief Steve Seltzner says fire crews are up against it: