Have been on Kosciuszko but it was cca May, reminded me of some lower mountain ranges back home in central Europe. Met a guy finishing his 2 week hike up there, in fierce winds and clouds, very nice encounter.
It looked like they get their share of snow up there, but these pictures bring much more - never thought you can actually die in avalanche in Australia! Couldn't find any victims by quick googling so hopefully noone yet.
Good to remind me to start packing for the weekend snow camping in similar conditions, forecasts say up to 60cm of fresh snow so better be careful.