Solarized Selenium Storm

Two Strikes, August 24, 2011. My first double. Almost a mirror-image)

This is very strange (to me, at least) 10PM or so, August 24, 2011, Port Credit, Canada. Probably the biggest lightning display of my life. I took 155 shots, manual, focus infinity, f5.6. This shot was totally overexposed (no kidding) and I thought it was trash. I dropped the exposure in LR3 there was this! I did nothing in PS except to convert from raw to psd -after lowering the exposure. If anyone can explain what this is, I`d love to hear it.