Realistically, at 12km, no cloud which is so huge can spawn at 12km. A Nimbocumulus (Castle Bravo) cant even reach this scale - and if it can, its definetly not at that yield. There would be much less than many of them.
It not only ruins the usual beautiful sky at such high altitudes, but its also unrealistic and its annoying when i have to fly through a rain cloud at 23km (this is what happens whenever i fly L-2000)


