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 The GFS superceded the AVN and MRF models, on which it is largely based.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.
19:09 EDT Darwin should be set for some much needed relief from hot and steamy weather, with the Bureau of of Meteorology predicting a monsoon trough would set in over the city on New Year's Eve.