Aurora-Like Phenomenon Recorded Pre-Earthquake in China
According to the YouTuber who posted this, "Bizarre colorful (luminous/glowing) cloud phenomenon in the sky was observed about 30 mins before the May 12, 2008 Sichuan earthquake took place. This was recorded in Tianshui, Gansu province - 450km northeast of epicenter, by someone using a cell phone."
Looks a lot like a rainbow to me, but I'm no expert on geo-magnetic phenomena.
Watch the clip, AFTER THE JUMP...