Bushfires threaten homes in New South Wales and Western Australia as emergency warnings issued

Firefighters are estimating "dozens" of buildings have been destroyed after admitting one of their megafire backburns got away from them.

Bushfires are blazing out of control on opposite sides of the continent with homes threatened outside both Sydney and Perth.

Some residents have been told it's too late to leave as the out-of-control blazes burn closer to their homes.

Here's how Monday's firefighting efforts played out.