Here is a bit more on thunder from wikipedia:

Experimental studies of simulated lightning have produced results largely consistent with this model, though there is continued debate about the precise physical mechanisms of the process.^[4][1] Other causes have also been proposed, relying on electrodynamic effects of the massive current acting on the plasma in the bolt of lightning.^[5] The shockwave in thunder is sufficient to cause injury, such as internal contusion, to individuals nearby.^[6]

Inversion thunder results when lightning strikes between cloud and ground occur during a temperature inversion. In such an inversion, the air near the ground is cooler than the higher air. 

We hope you enjoy the video and learned something about this cool phenomenon!  The full report is on the below link as well.

thanks to Thomas Sumner of ScienceNews.org