National Centers for Environmental Information / National Operational Model Archive and Distribution System Catalog https://www.ncei.noaa.gov/thredds/catalog/model/gfs.html

Dataset Size Last Modified
     Folder  Global Forecast System   --
         Folder  Global Forecast System - Grid 3 - file units/   --
         Folder  Global Forecast System - Grid 3 - historical file units/   --
         Folder  Global Forecast System - Grid 4 - file units/   --
         Folder  Global Forecast System - Grid 4 - historical file units/   --
         Folder  Global Forecast System Grid 3 Analysis Set - file units/   --
         Folder  Global Forecast System Grid 3 Analysis Set - historical file units/   --
         Folder  Global Forecast System Grid 4 Analysis Set - file units/   --
         Folder  Global Forecast System Grid 4 Analysis Set - historical file units/   --
         Folder  Global Forecast System Legacy Grids   --
             Folder  GFS - Legacy Grids/   --

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