  Proceeding from a stormy day of 22 September 2022, when 7 thunderstorm ground
enhancements occurred (TGEs, 3 of them very large), we perform an analysis of
the most important conditions, on which depend the origination of the large
particle fluxes in the thunderous atmosphere. Among these conditions are the
near-surface electric field (NSEF), graupel fall, and lightning activity. We
estimate the intensity of the largest particle flux of 1,25 mln gamma rays
hitting each square meter of surface on Aragats with energy spectra extended up
to 70 MeV. Only one TGE from 7 meets the conditions to recover the electron
energy spectrum; the fraction of electrons with energies above 10 MeV relative
to the gamma ray flux reaches 45%. By carefully examining the graupel fall, we
demonstrate that the lower dipole, which accelerates electrons, is formed by
the main negative and lower positively charged regions. The lower dipole decays
with a graupel fall that coincides with TGE terminations (usually by a
lightning flash).
