Around 2,300 firefighters in New South Wales state were making the most of relatively benign conditions by frantically consolidating containment lines around more than 110 blazes and patrolling for lightning strikes, state Rural Fire Service Commissioner Shane Fitzsimmons said.
"Unfortunately with lightning strikes, it's not always the next day they pop up," Fitzsimmons told the Australian Broadcasting Corp.
"They can smolder around in trees and in root systems for a couple of days and pop up under drier, hotter conditions, so we are very mindful of that as we head into Friday," he added.
The unprecedented fire crisis in southeast Australia that has killed 25 people, destroyed 2,000 homes and shrouded major cities in smoke has focused many Australians on how the nation adapts to climate change. Prime Minister Scott Morrison has faced fierce criticism both domestically and internationally for downplaying the need for his government to address climate change, which experts say helps supercharge the blazes.
The center-left opposition Labor Party has made political capital from the crisis by promising more ambitious policies than the ruling conservative coalition to tackle climate change. Opposition climate spokesman Mark Butler wants the government to allow a debate on climate change in Parliament when it returns in February.
"Hopefully we could fashion a bipartisan position," Butler told ABC. The two sides last held a bipartisan position on climate change in 2007, and have remained bitterly divided ever since on issues such as making carbon polluters pay for their emissions.
Labor had pledged to reduce Australia's greenhouse gas emissions by 45% below 2005 levels by 2030 and achieve zero emissions by 2050 if it had won last year's elections.
The coalition government has committed to reduce emissions by 26% to 28% by 2030 and warns that Labor's more ambitious target would wreck the economy. The government argues that Australia is responsible for only 1.3% of global emissions and more ambitious targets would not ease the current fire crisis, which follows Australia's hottest and driest year on record.
The unfolding disaster in Australia, which is likely to continue throughout the Southern Hemisphere summer, has galvanized calls for more global action on climate change.
Elton John and actor Chris Hemsworth are among the celebrities donating big bucks to help aid the firefighting efforts. Hemsworth, an Australian who lives in the drought-affected New South Wales town of Byron Bay, wrote on Twitter that he was donating $1 million and asked his followers to show support. "Every penny counts," he wrote.
John announced during his Farewell Yellow Brick Road concert in Sydney on Tuesday that he will also donate $1 million. The singer said he wanted to bring attention to the devastation that wildfires have caused, saying it has reached a "biblical scale."
Hemworth and John joins a growing list of celebrities, including Pink, Nicole Kidman and Keith Urban, who have pledged to donate toward relief efforts.
Prince Charles, who is next in line to become the British monarch and king of Australia, said in a video message from Scotland that he and his wife Camilla had been in despair watching the infernos burn across Australia.
"I fear this is a hopelessly inadequate way of trying to get a message to all of you that both my wife and myself are thinking of you so very much at such an incredibly difficult time and in such impossible and terrifying circumstances," the prince said.