Consider the notion of hail: Pieces of ice just start falling from the sky. Scary, right?
Now consider what it would be like if it started hailing on you, but instead of hail it was basically golf balls made of ice because that is what happened when Belgium met Tunisia. An insane hail storm forced the match to be suspended and for good reason -- the hail is frightening.
Once again, Mother Nature 1, Football 0.
That hail would make it through Marouane Fellaini's hair and knock him out.
Suspending the match was definitely a good idea.