It was a joke, it was meant to be humor.
I have been wondering, though, for a while, “What would the effect be if a large meteor/small asteroid missed the earth by a mile (at its point of nearest approach, it was one mile above the ground)?”
There would be, of course, a heck of a sonic boom; over water it would probably trigger a tsunami, over a built-up area it would probably be as bad as being nuked.
The parts that burned off would probably have the same sun-obscuring effect as a volcanic eruption.
What else?
On the other hand, those Russky building inspectors are pretty lax :)