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 The GFS superceded the AVN and MRF models, on which it is largely based.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.
10:56 EDT While ranchers in the US state of South Dakota are still assessing their stock losses from a blizzard in October, their neighbours have rallied to provide support.