Lightning is a natural phenomenon that can occur with a high frequency at any time of the year and is subject to statistical uncertainty: it is not possible to determine where and when an isolated lightning strike will occur. Because of this, storm detection systems cannot precisely predict the location and timing of a particular discharge1, but they can determine the Discharge Risk Conditions based on the distance of previous lightning strikes (electromagnetic field detectors) or the variation of the atmospheric electrostatic field (electrostatic field sensors).