Anatomy of a heat wave: How a cyclone, humid air and atmospheric waves drove brutal heat in southeastern Australia‎

Australia has always had heat waves. But this week's heat wave in southeastern Australia is something else. Temperatures in some inland towns in South Australia, New South Wales and Victoria were up to 20°C above average for the time of year, which meteorologists described as "incredibly abnormal." Victoria's heat record toppled after Walpeup and Hopetoun hit 48.9°C. The heat is set to continue until Saturday in some areas.