I am downloading grib2 files from the NWS NOMADS GFS service details here
The files are provided on a 4x per day cycle and the date format is YYYYMMDDHH. I believe that the processing is actually done 4 times per day.
I am a little confused about the naming convention and what time to actually go and get the files.
An example url using the filter service is: http://nomads.ncep.noaa.gov/cgi-bin/filter_gfs.pl?file=gfs.t00z.pgrbf00.grib2&lev_surface=on&var_PRES=on&leftlon=0&rightlon=360&toplat=90&bottomlat=-90&dir=%%2Fgfs.YYYYMMDDHH
My understanding is that he HH can be 00, 06, 12, 18.
- How does this file naming system work?
- Does any one have a script that downloads this data on a scheduled basis and figures out what the file names are?
- does this file have forecast weather available in advance?