planes, trains and thunder storms?



I'm no rocket scientist, but i can imagine that people know the difference. These sounds have been heard world wide for around 5 months.

Planes: most people know what a plane sounds like. It's usually accompanied by an actual plane. not the case here.

Thunder: There is no thunder without clouds. a clear and sunny day usually will not produce a thunderous noise like the ones described.


sky quakes? what the hell is a sky quake and why haven't we ever been taught about them???