What is the cause?

[Mystic Wanderer]

But I would contribute this to the Action or Nonaction of our sun and the fact our Poles are Shifting.

I agree. 

I also think the earth is responding to the negative energy emitting from humans right now. The whole world seems to be in an upheaval as people in oppressed countries rise up to demand their freedom, while we here in the U.S. are rising up to keep from losing ours.

The Earth is a living organism that emits energy, and when our human energy emerges together with the earth energies, we see the results in Mother Earth "blowing her stack".