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 The GFS superceded the AVN and MRF models, on which it is largely based.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.
11:44 EST With just one week until the start of the 2015 snow season, conditions are looking ripe for some healthy pre-season falls.