Fire-hit LA faces new peril

Hot, powerful winds Tuesday threatened to rekindle and whip up major fires that have devastated the hills and suburbs of Los Angeles, killing at last 24 people and changing the face of America's second biggest city forever.

A week after blazes erupted and spread uncontained, forecasters predicted "particularly dangerous" dry Santa Ana winds would spike the wildfire threat for already exhausted firefighters.

"Stay aware of your surroundings. Be ready to evacuate. Avoid anything that can spark a fire," the National Weather Service warned.

A large part of Southern California was under a Red Flag warning, indicating that intense dryness and furious winds would make conditions ripe for wildfire.

Part of Los Angeles County and much of neighbouring Ventura County were in a "Particularly Dangerous Situation," according to the NWS, a designation that was also declared before last week's deadly blazes erupted.

Officials insisted they were poised, with Los Angeles city fire chief Kristin Crowley telling reporters a huge firefighting operation was well placed.

"I have strategically pre-positioned engine strike teams and task forces which are dedicated to rapid response for any new fire that breaks out," she said.

The renewed danger comes with 24,000 acres (9,700 hectares) of the upmarket Pacific Palisades in ruins and 14,000 acres of the city of Altadena badly charred.

More than 90,000 evacuees are desperate to get back to their homes -- or even just to see if anything at all survived.