  During the multiyear monitoring of particle fluxes and near-surface electric
field (NSEF) on the Aragats research station, no runway relativistic electron
avalanches have been observed in the January-February months. The large peaks
and energies of TGE particles originating from the electron-gamma avalanches in
the thundercloud are observed in the Spring-Autumn months when the electric
field inside the cloud often exceeds the runaway threshold strength. On
February 7, 2023, suddenly, all particle detectors registered 3 TGEs within 10
hours without any unusual local weather conditions. We consider these TGEs as
indirect evidence of the influence of strong earthquakes on the previous day on
the ionosphere and via the ionosphere on the structure and strength of the
intracloud electric field above Aragats mountain. Recovered energy spectra of
TGE electrons and gamma rays prove nearly one hour the strength of the electric
field above Aragats at the heights 3300-5300 m comprises 2.1 kV/cm.
