High pitch noise does not necessarily mean supersonic. And as someone suggested, you would have seen the flash before you hear the sound because light travel a lot faster than sound, if that bomb travel
SUPER-sonic, it mean it would detonated before you hear the bomb detonate, because it is travel faster than sound. That's what supersonic means
And from his video (which most people show depicting the "bomb" hitting the hospital)
You can clearly hear the sound before the flash, which mean whatever it was exploding is slower than sound.
No, I am saying it is a fuel explosion. It could be anything, it could be fuel leak from car, fuel from a rocket, fuel from a missile. It most likely not a Kinetic Explosion as in conventional bomb attack.
Even Airburst bomb, you will still kick up dust and soil and create cratering, not to mention shrapnel damage, so if that car lot is where the bomb hits, all those are not there in the car park. Kinetic Damage radiate, so you cannot be next to a target of a kinetic strike and have not a single sign.