No, it would never consume the Earth. The radiation pressure (mainly from the Hawking radiation at that size but possibly also form some residual rotation) would prevent any mass-energy from crossing the event horizon. A micro-black hole is basically a runaway bomb directly converting its mass into radiation. That’s why even a very small micro-black hole could cause such a large explosion.
The problem is that it would have to be at the right moment in it’s evaporation to make it as far as Earth’s atmosphere and release its final energy exactly as it approached the surface in Siberia. To say the odds are against this is a cosmic understatement.
And moreover, for it to have been a natural black hole, it would have had to have been one of the primordial black holes left over from the early universe - which aside from being still highly hypothetical, are poorly understood even if they do or did exist. Any stellar black hole won’t be reaching that point its evaporation for trillions of years.
But it’s still a fun idea!
