This sighting is from April - not sure how I missed it! Anyways, it's a great one. It reminds me of the classic "orb" UFOs you see from time to time - they tend to show up around natural disasters (the Japan tsunami and earthquakes really got "their" attention) and are reminiscent of "earthquake lights." Check out this orb as it swings around the damaging April 3rd tornado in Arlington, TX.
Compare this to the UFOs seen during the Japan tsunami.