|Above: Jupiter - still owning it.|
Well, I guess that makes sense.
Jupiter's bolts are ten times more powerful than terrestrial bolts. With no surface they simply strike within the clouds, like sheet lightening on Earth - so you'd seldom see the whole bolt, just a diffuse flash. They spring from Jupiter's water cloud layer, below its clouds of ammonia.
Below the clouds the hydrogen atmosphere gets hotter and thicker, becoming an ocean of ‘supercritical fluid’. Over that 'ocean' the clouds form an immense roof, punctuated by the lightening...