Electric Rainbow!

A real-estate agent and storm chaser captured a snapshot of a lifetime on Aug. 9, when he photographed a rare duo — an eerie flash of lightning framed by a glorious rainbow — in Tucson, Arizona.
The electrifying image took social media by storm: As of Aug. 14, Greg McCown's photo had garnered more than 1,000 Facebook likes and more than 3,600 retweets.
There's a reason why it went viral: Those types of sightings are incredibly rare. Although 100 lighting bolts strike the Earth every second, the chances of them flashing near a rainbow are slim, said Randall Cerveny, a professor of meteorology at Arizona State University in Tempe.
"Usually, you don't get those two things to line up at the same time," Cerveny said, adding that a desert area like Tucson is more likely to serve up conditions for such a sighting
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