These are video clips I took of cloud lightning South of Merimbula at 10.30pm on 18th December 2014.
The first clip is hand held without any zoom and the last one is on a tripod zoomed 4 times. The still photo I have used here as a background is from the last clip.
The display went on for over an hour and the sky surrounding the huge cloud was cloudless. There was also absolutely no noise at all.