@StephenK — excellent work! I’m intrigued by your results. On your site is there a video showing a little of how you produce these?
I used to work in meteorology while serving the USAF. I observed many lightning storms. I have to say, the FW3A lightning mode is very convincing! I’m very curious to know what kind of mathematical randomizing formula you came up with for it. Naturally, real thunderstorms can have long gaps between lightning, so yours are shortened a bit for user satisfaction. But it’s nicely done.