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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 The GFS superceded the AVN and MRF models, on which it is largely based.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.
15:46 EDT The Australian research body the Climate Council has argued in its latest paper that the probability of drought will increase, and it will become more severe, because of climate change.