How would one, lets just say, summon lightning on top of a specified player's position :)

[Christian Lewis]

I'm making a code mod, and one of the commands will be to summon lightning. Any ideas on how to summon lighting on a position? (I know lighting is a lot more dynamic in this game than lets say a certain popular block game, where it's just an entity. Ill be looking through the source code, but if anyone has a answer it would be much appreciated.)