Powder keg: Australia primed to burn
From 2020 to 2023, Australia experienced a multiyear ‘protracted’ La Niña episode that led to recordbreaking rainfall and flooding along the east coast. These heavy rains led to prolific growth of grass and bushland, including rapid regrowth in areas scorched by the Black Summer bushfires. History shows that grass fires follow floods. There have been three ‘protracted’ La Niña episodes since 1950: 1954 - 1957, 1973 - 1976, and 1998 - 2001.
The report's key findings include:
- Australia’s three years of cooler and wetter than- average conditions, due to a protracted La Niña event, temporarily dampened our bushfire risk. However, this has led to prolific vegetation growth that’s creating powder keg conditions for future fires.
- History shows that grass fires follow floods. Firefighters fear that the spring of 2023 and summer of 2023-2024 could see widespread grass fires, supercharged by climate change.
- Australia’s protracted La Niña episode is giving way to hotter and drier conditions including the possible formation of an El Niño event. As a result, we will almost certainly see a return to normal or above normal fire conditions across most of Australia in coming months.
- Governments must prepare for a potentially devastating fire season ahead, while stepping up efforts to move beyond fossil fuels and ensure greenhouse gas emissions plummet this decade.
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