The best chances of observering are on the nights of Friday, 12th and Saturday, 13th September 2014.
Aurora are notoriosly difficult to predict, but these large events occasionally make it possible to observe auroral activity much further from the north and south pole than is normally possible. For observers south of about Sydney and Perth, look low to the south after dark and before Moon rise on these nights. A long exposure photo may help to discren some reddish colour in the sky (but don't confuse redness from the lingering effects of sunset with aurora).
More information and real-time predicitions of visibility are available from: