I downloaded GRIB file from https://nomads.ncep.noaa.gov/gribfilter.php?ds=gfs_0p25_1hr using this url basically (https://nomads.ncep.noaa.gov/cgi-bi...on&lev_90-0_mb_above_ground=on&lev_surface=on) But when I open the file in python it gets no data but when I select some other weather parameter like Temperature (TMP) there is data (https://nomads.ncep.noaa.gov/cgi-bi....0p25.f005&var_TMP=on&lev_2_m_above_ground=on) CAPE is Convective Available Potential Energy btw import xarray as xr ds = xr.open_dataset(file, engine='gribberish') Continue reading...