Global Forecast System. The operational numerical weather forecasting model run by NCEP. The GFS superceded the AVN and MRF models, on which it is largely based. Forecast data from the GFS is available out to 180 hours at full resolution and 16 days at a reduced resolution.
13:01 EST On Friday and Saturday thunderstorms are set to spark up across northern New South Wales and parts of southern Queensland as a low pressure trough deepens.