  We report spectroscopic observations of the $H\alpha$ emission line of the
recurrent nova RS~Oph obtained between 12 and 23 August 2021 during the recent
outburst. On the basis of the sharp P~Cyg profile superimposed onto the strong
H-alpha emission, we estimate that the outflowing velocity of the material
surrounding RS Oph is in the range 32 km/s < V_{out} < 68 km/s. The new GAIA
distance indicates that the red giant should be probably classified in between
II and III luminosity class.
  The spectra are available upon request from the authors and on Zenodo.
