The Global Forecast System (GFS) is a National Centers for Environmental Prediction (NCEP) weather forecast model that generates data for dozens of atmospheric and land-soil variables, including temperatures, winds, precipitation, soil moisture, and atmospheric ozone concentration., The GFS is run four times a day, producing forecasts up to 16 days in advance. The forecast component uses the Finite Volume Cubed (FV3) model with a resolution of ~13 km, with the atmosphere coupled to the NCEP Global Wave Model., The Global Forecast System (GFS) is a global numerical weather prediction system containing a global computer model and variational analysis run by the U.S. National Weather Service (NWS)., The Global Forecast System is a global numerical computer model run by NOAA. This mathematical model is run four times a day. It is an excellent model in the one- to five-day range. The accuracy drops significantly after day five, and significant long-range forecast changes are noted from run to run., The GFS (Global Forecast System) model produces forecasts out to 16 days, four times per day. The loop time steps are 6 hours from analysis time to 240 hours (10 days), then change to 12-hour time steps out to 384 hours (16 days)., GFS Wave Model Information about the GFS CC is the model cycle runtime (i.e. 00, 06, 12, 18) FFF is the forecast hour of product from 000 - 384 YYYYMMDD is the Year, Month and Day Click on the links under Inventory to see the file's contents. Use as a guide when selecting specific parameters from NOMADS. Click to view what is available..