The chances of receiving above median rainfall during autumn are between 60 and 70% over much of SA, western NSW, southwest Queensland and the Pilbara and Gascoyne regions of WA (see map above). Such odds mean that for every ten years with similar ocean patterns to those currently observed, about six or seven years would be expected to be wetter than average over these areas, while about three or four would be drier.
In contrast, the chances of receiving above normal rainfall are between 30 and 40% in southern Victoria, Tasmania and southwest WA. In other words, the chances of below normal rainfall range from 60 to 70%. >> More