Widespread October bushfires in NSW are unusual, but have happened before, such as in 1991. This year there was an Early start to Australian bushfires, record temperatures in early September.
It is now the 7th time this bushfire season a total fire ban has been declared in Sydney. Very Unusual. If the fire weather is this bad so early in the season, it can get worse over the coming months as Summer heats up, especially if we have extreme summer heatwaves similar to 2013.
Update: Sunday 20 October: Premier Barrie O'Farrell has declared A State of Emergency across NSW for 30 days as weather conditions are now forecast to be worse than anticipated. Indefinite Total fire bans, and increased powers for emergency personnel. The State Mine fire in the Blue Mountains has burnt 38,000 hectares and is burning on a broad front from Lithgow to west of Bilpin.