热浪袭击澳大利亚，气温逼近50摄氏度

Core Viewpoint - Australia is experiencing its most severe heatwave since 2009, with record temperatures leading to dangerous conditions and wildfires [1] Group 1: Temperature Records - The Australian Bureau of Meteorology reported that temperatures in South Australia reached 49.6 degrees Celsius, while parts of Victoria recorded temperatures of 48.9 degrees Celsius, marking the highest temperatures since records began in 1901 [1] - The temperature at Melbourne Airport reached 44.1 degrees Celsius in the afternoon [1] Group 2: Impact on Wildfires - The Country Fire Authority of Victoria reported that a bushfire near Melbourne, 160 kilometers southwest, is out of control, resulting in the destruction of three homes [1] - Earlier in the month, the southeastern region of Australia had already experienced a heatwave, with five fire points still burning due to the high temperatures [1] Group 3: Event Disruptions - The ongoing Australian Open tennis tournament had to pause all outdoor matches due to the extreme heat, with several major venues utilizing mobile roofs to continue play [1] Group 4: Historical Context - The current heatwave is noted as the most severe since the 2009 heatwave, which led to one of the deadliest bushfire disasters in Australian history, resulting in 173 fatalities [1]