Anyway,
The Sydney Dust Storms were the worst in recorded history. Records started in the 70's.
Reminds one of the Sirocco in the Mediterranean.
Aerial view (source: BBC) shows the magnitude of this phenomenon.
A gigantic atmospheric phenomenon measuring minimum 1000 kilometers in diameter, such dust storms definitely have wide-ranging long-term effects.
One had heard of the wildfires in this part of Australia in the past, of course. I remember one that threatened many households within city limits.