Australia’s southern states are bracing for a significant heatwave this week, with temperatures expected to reach the 40s. This is anticipated to be the most intense heatwave since the 2019-20 “black summer.”
Heatwave Sweeps Across the Continent
Heatwave warnings are currently in effect for large areas of Western Australia, New South Wales, Victoria, Queensland, South Australia, Tasmania, and the Australian Capital Territory. A band of severe to extreme heat is moving across the country from west to east.
According to Dean Narramore, a senior meteorologist at the Bureau of Meteorology, Wednesday will mark the beginning of a three-day period of extreme conditions in south-eastern Australia. Temperatures are likely to be 8 to 16C above average in parts of South Australia, Victoria, and New South Wales, potentially reaching the mid-to-high 40s inland and the low 40s closer to the coast.
Initially, the heat will be “baking, searing” without significant wind. However, as winds pick up on Thursday, fire danger is expected to become high to extreme in much of South Australia and Victoria. By midweek, Adelaide and Melbourne could experience peak temperatures in the 40s, with even higher temperatures expected in inland regions.
Some areas of north-west Victoria and eastern South Australia could see temperatures as high as 46 or 47C on Thursday. The heat is expected to persist across the south-east for several days, with many locations anticipating a prolonged period of mid-40s temperatures.
A cool change arriving in South Australia on Friday is forecast to push the heat eastward into New South Wales, where Sydney could reach 39C on Saturday.
Preparing for Extreme Heat
With multiple days of hot temperatures and warm nights anticipated, Dean Narramore urged residents to “stay cool, stay hydrated, stay indoors,” and to be mindful of the elderly, young children, and pets.
The current heatwave is being driven by a “blocking pattern” created by a monsoon trough over northern Queensland and a high-pressure system over the Tasman Sea, which is funneling heat into the country. Rain and storms are continuing in north Queensland, with major flood warnings in place for the Flinders and Western rivers.
Frequently Asked Questions
When will the heatwave begin?
Wednesday is expected to mark the start of a three-day period of extreme conditions for south-eastern Australia.
Which states are most affected?
Heatwave warnings cover large parts of Western Australia, New South Wales, Victoria, Queensland, South Australia, Tasmania and the Australian Capital Territory.
What is the expected temperature range?
Temperatures are likely to be 8 to 16C above average, potentially reaching the mid-to-high 40s inland and the low 40s nearer the coast.
As the heatwave unfolds, will communities be prepared to mitigate the risks associated with extreme temperatures?
