World is full of mysteries, do you like to shiver?

I recently stumbled upon an article which made me think a bit. I made some analysis and this is my conclusion: Perharps a rotating toroidal plasmoid was formed and that induced lot of current which has caused an earthquake due to magnetostrictive force. It also caused a "kick" to the steel constructions of the buildings and induced currents also have done their job. The plasmoid had lasted for 10 seconds during which it has expanded, cooled down and somehow it rapidly disappeared and caused the current flow to be reversed very, very rapidly. This caused the second shock and the very remarkably visible part of the explosion.

Conclusion? Well, just don't do it at home! Neither at your own or your neighbour's! EMP weapons seriously damage all the infrastructure we had built for past 100 years or so.

Plus: do not any nuclear bomb explode higher tnat 500 meters over the ground or you will be very hated... especially don't do it in height of over 100km. PLEASE!