People in some areas near in Namadgi National Park were told it was too late to leave.
Helicopters are searching for a C-130 Hercules air tanker feared to have crashed while fighting bushfires.
The Monash University report said extreme heat and weather events would have a growing impact on sport in Australia.
Bushfires, Damaging Winds, Flash Flooding, Hail, Smoke Haze, And Landslide Warnings: Australia’s Latest Weather Forecast
Severe storms bring relief but also carry a risk.
The tennis player slumped to her knees, struggling to breathe, and said she had "never experienced something like this before".
"We have a long way to go."
The Fleabag star is the latest in a long line of celebrities to donate to the relief effort.
The event will be at ANZ Stadium next month
"This is my bit towards it, and I love Australia so much.”
Estimate for damages claims was at $700 million on Tuesday while the death toll stood at 25.