From Thomas Ashcraft – New Mexico:
Interesting sprite event May 23 2016 0418:30.5588 UTC – west of Oklahoma City, Oklahoma. Not sure, but there may be a sprite element in the cluster that exhibits upward streaming “tendrils”.
VLF-ELF and video document at link below.
Sprite Event May 23 2016 0418:30.5588 UTC over western Oklahoma with VLF radio Emissions from Thomas Ashcraft on Vimeo.
Color image here