Immediately after the impact of each discharge occurs exactly at the point of impact noticeable local micro-earthquake of magnitude 3-4 (does not cause any damage, if it were not thunder, it would be hardly noticeable by human senses).
Agad-agad matapos ang epekto ng bawat naglalabas ng loop nangyayari eksakto sa punto ng kapansin-pansin na epekto lokal micro-lindol ng magnitude 3-4 (ay hindi maging sanhi ng anumang pinsala, kung ito ay hindi kulog, Gusto bahagya halata sa mga tao Senses).