Originally Posted by havasu
Isn't is possible a meteorite, which often has been known to be extremely radioactive, cause this? Seems more plausible to me.
It is. We need more info on the area though before we can even venture a guess.
The description of the explosion is indicative of a march larger explosion, one reaching out of th Earth's atmosphere.
We also have things like this.
It happens, and this is still unexplained.