The first one is HAARP (or any plasma heating device). Same thing was filmed just before the earthquakes in China and Japan. It doesn't mean HAARP was used to provoke a earthquake in Chicago. It could be used to improve radio transmission among other things. It works better if there are aluminum and barium particles in the air (chemtrails). It's described in some documentaries about HAARP.
More similar effects:
http://www.disclose.tv/action/viewvi...done_by_HAARP/
http://www.metacafe.com/watch/312069...plasma_weapon/