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 The GFS superceded the AVN and MRF models, on which it is largely based.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.
01:13 EDT Parts of Sydney were lashed by a storm on Monday afternoon as the weather bureau warned of further wild weather for parts of regional New South Wales overnight.