Please read about a potential issue if you acquired daily 2m air temperature files between 8/14/2014 and 11/7/2014.
We have transitioned the data files from netCDF3 to netCDF4-classic format (transition date: Aug 14th).

20th Century Reanalysis V2

This plot shows a profile of temperature on May 18 1925 near 37.7N, 270.77E (Tri-State tornado).

Options to produce plot are using the Vertical Profile Page

  • Select: variable: air temperature and dewpoint
  • Select: top level: 100mb
  • Select: date: 1925 May 18 18Z
  • Select: dataset: 20CR
  • Select: latitude: 37.7 (near Jackson Illinois)
  • Select: longitude: 270.77 (near Jackson Illinois)

vertical profile plot