Not really sure if you can help but on the 5/11/12 SA had quiet severe lightning strikes. I live on an isolated rural property North of Adelaide with underground streams. Lightning was striking all around but a point 6 metres from my veranda it seemed to be attracted to most. After the storm this area was submerged and burnt. Indeed the lightning seemed to “emerge” from the ground. The colour of this lightning was purple. I was videoing the storm from 6 metres from this point and until reviewing the video later had no idea that all this local activity was occurring. I have attached a few pics to highlight this “purple” lightning. My question is can lightning travel underground and re-emerge at another point?
The irony is I train people in licence accreditation of 275KV switching as a job so I appreciate the inherent dangers involved with high voltage electricity!
from Stockyard Creek, South Australia