Figure
1. A pattern of the progress of the storm on Aragats on 23 May. a) The
distance to the cloud base. b) Images of the graupel fall. c)
Disturbances of the NS electric field (blue), count rate of ASNT
spectrometer (black), and distance to lightning (red).
During the second storm that occurred the next day on May 24 and lasted
for 3 hours, the electrification of the atmosphere above the station was
much smaller. The nearby lightning flashes occurred only during the
first hour of the storm terminating a small TGE at the end of its
development. During the large TGE followed 6 minutes later, the nearest
lightning flash was at a distance of more than 15 km, consequently, it
did not disturb smooth evolution of long duration (≈12 minutes) intense
TGE (see Table 1 for more detail). The cloud base height was smaller
than on 22 May, the graupel fall was moderate.