Attached is the likely forecast map for 9pm tonight Monday 27th December for cities around Australia.
The picture gives only the most likely observing conditions for tonight as per data used by Sydneystargazers.
Our 24 hour forecast charts show the range of cloud you might expect to see around Australia. Two of the charts are added below.
For our forecasts, cloud coverage of less than 30% indicates clear sky while cloud coverage of 60% or more indicates overcast conditions are possible.
For example, if the chart indicates Melbourne will have cloud coverage of 5 to 28%, Melbourne will have good weather for the night. If however the cloud coverage was 69 - 99%, Melbourne can expect overcast conditions.
If there is cloud coverage for example of 15 - 52%, this indicates that there is cloud in proximity to the city so there is 50:50 forecast on clear sky or clouds developing..... depending on wind speed and direction.
A weekly forecast chart is also available.
The charts and maps are available at
http://sydneystargazers.com/ for cities around Australia.
http://sydneystargazers.files.wordpr...alia-map25.jpg
http://sydneystargazers.files.wordpr...forecast25.jpg
http://sydneystargazers.files.wordpr...6-nights25.jpg