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 The GFS superceded the AVN and MRF models, on which it is largely based.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.
13:27 EDT A low pressure trough and front have caused widespread rain across New South Wales overnight, with some areas seeing their heaviest 24 hour rain in over a decade.