One of the problems with BOM and Ozzie Govt spending cutbacks is that there are less local experienced people doing the forecasting.
A lot of present day forecasting is done relying only on historic data modelling and statistics. So, they _will_ get it right more often than not - that's how statistics work!
But when some conditions "outside-the-box" are looming, they will get it wrong as they need LOCAL experience and a window to look out-of to make reasoned forecasts.
Another factor is that the local BOM may not be "local". For Adelaide, they could be outsourced to Sydney, Canberra or Melbourne (or Mumbai). Now that cannot help.