⭐⭐⭐⭐⭐ SCRIPTED LIGHTNING v2

The lightning is a scripted mesh prim. If you want lightning in the sky, check out my Lightning Against A Dark Sky.
Each prim has a dialog box that pops up when clicked. Therefore, I recommend unlinking the prims before using the dialog boxes.
The frames per second of the lightning can either be increased or decreased or reset to the default of 16 fps. The width and height of the lightning can also be adjusted.