The weather in the Australian states of New South Wales and Queensland on Tuesday is similar to the conditions which led to the 2009 Black Saturday wildfires, an emergency expert said.
The Black Saturday blazes in the state of Victoria were the most devastating in the country's history, killing 173 people and destroying more than a million animals over 450,000 hectares (1,111,974 acres).
Stuart Ellis, chief executive of the Australasian Fire and Emergency Service Authorities Council, told the ABC that Tuesday's fires had the potential to be even worse than the 2009 blazes.
"The concerning thing about today in NSW in particular, but also in Queensland, is that there is already significant fire in the landscape. On Black Saturday there was a very small number of fires in Victoria, but in NSW today we already have a large number," he said.
"The only safe place to be is somewhere else. And I'm an ex-SAS officer, I feel pretty capable but I would not consider staying at my home today."