Does the Call Lightning storm follow the caster?

@TheShieldComicsWhen call lightning is cast, does the storm follow the caster when he moves, staying centered directly on him? the storm does not move – stays at its starting point

— Mike Mearls (@mikemearls) December 4, 2015

@TheShieldComicsAs a follow-up, as long as you can see a target within that 60 ft. radius, you can move as far away from the storm as you want? Yes

— Mike Mearls (@mikemearls) December 4, 2015