here is a summary of our dilemma from a weather watching ski fool here....
Basically, our mountains are not high enough and too far north for our continental setup. They need to be at say, 46° south to get more reliable snow or at least keep our base better preserved. Also, we have a huge southern ocean beneath us which greatly moderates polar air visiting our shores.
For example, in the USA you have the influence of a massive land mass that takes you almost to the north pole. Frigid air pools there over Alaska/Canada and even though it moderates somewhat before it gets to say New York state, its still very cold and quite often snowy, even at sea level.
In Australia we have to rely on so many variables being just right, otherwise we can get rain instead of snow or no snow at all. There is very little room for error. Add to that, the warming scenario of recent decades and it makes it even tougher. Southern Australia is experiencing an exceptionally mild autumn/early winter in many parts, such warmth has to have an effect on winter. Its almost as if we are still in April/May with regard to temps in many places. My town for example has not had one day on average or below in June so far. We are running at 4 to 5° above average for max temps, which effectively means we are still in late April up here.
So to summarise. Australia is a big country with a massive Southern Ocean beneath it that moderates our cold fronts and makes our winter seasons fickle at best. We need our ski fields to be at 46° south, preferably below Perth! We need the climate to cool not warm as this makes our fickle winter weather even more unpredictable.
This is not a negative post as I'm still very hopeful and indeed expecting decent snow this winter but we mustn't put unrealistic expectations on our ski fields. Before you know it, you guys will be goin' off down there. Late June and into July will be kickin' butt