The most powerful heatwave in the history of south-eastern Australia occurred in January 1939. Adelaide (46.1 °C on the 12th), Melbourne (45.6 °C on the 13th) and Sydney (45.3 °C on the 14th) all had record-high temperatures during this period, as did many other central district areas in New South Wales, Victoria and South Australia. The record number of consecutive days in Melbourne over 40 °C is five, with Brisbane and Sydney each having two. Heatwaves usually bring by oppressively warm nights, with Oodnadatta, SA recording an Australian record of nine nights above 30 °C in February 2004. Another extreme event was a prolonged period of extensive heatwaves known as the Angry Summer in early 2013.