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 The GFS superceded the AVN and MRF models, on which it is largely based.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.
14:00 EST A cold front is crossing western parts of the country triggering heavy showers, while drawing in a very warm air mass ahead of it over South Australia.