Oscillating charged clouds revealed by the Central Italy Electromagnetic Network as a common atmospheric phenomena.

For more than 13 years, since the Central Italy Electromagnetic Network started to continuously monitor electric fields in the atmosphere, a certain number of electrical phenomena have been repeatedly recorded. Specifically, electric oscillations in the Extremely Low Frequency band with amplitudes of several $\mu$V/m were diffusely recorded, with major intensities during strong seismic and meteorological activities. A model of charged clouds agreed with the electric and magnetic observations satisfying the laws of electrodynamics. Theory and observational measurements contribute to sustain the discovery of a new electrodynamics phenomenon in the atmosphere.