Bureau of Meteorology, Australia - An exceptionally prolonged heatwave has affected large parts of central and south-eastern Australia during November 2009. Temperatures well above average began to influence much of the region on the weekend of 7-8 November. The hot spell continued largely unbroken, except in some southern and coastal areas, until 15 November. Slightly cooler conditions then prevailed on 16-17 November, particularly in Victoria and southern South Australia, before the heat returned from the 18th, with the highest temperatures of the whole event between November 18 and 20.