It is the first sign of cloud building over the tropics a signalling the the approaching end to the dry season.
There is significant cloud rolling in across the Bight into SA as the cut off low is now formed.
A southerly change is making its way up the NSW Coast.
The synoptic chart.
The cut off low will deliver rain to central Australia in the coming days before moving east.
Ahead of it there will a northerly airflow making for another day of warm conditions for most of eastern Australia.
Across the Newcastle, Central coast region it will be overcast tomorrow and much cooler due to tonight’s southerly change.
Tomorrow onshore winds will make for cloudy conditions to develop east of the Dividing Range.
It will remain fine and still very warm to hot inland across the NW.