Skepthu, I believe that what you see in the picture may have been thought to be rare, but with the overwhelmingly abundant number of cameras, people taking pictures, and internet access, is now shown to be not that rare after all. As close as a century ago (relative, using all scientific observations of the sky prior to 1916), a phenomenon would be viewed, written about, submitted for publication, vetted for scientific accuracy, printed, and distributed to the people who were studying the sky scientifically. Now the majority of the entire planet, which has many more people on it, have a camera at hand, and the vast majority of them are not "scientists." outside a Google/YouTube education. Then these unlearned people post on the internet with an air of authority, and are believed by other people who don't research well. The original photographer is a case in point. He is a professional photographer, yet confuses the phenomenon of haloes (visible when looking at the sun) and rainbows (visible only when looking away from the sun) in a research article which was presented to the EPA. He also continues to believe he resides 7000 miles away from possible sources of aerosols, while living in a large city, in a large, polluted state. If you believe you cannot have winds from more than one directions, nor have local winds from being in an urban island, anything he says is worth thoroughly researching yourself. And the best, most visual source is given above...Atmospheric Optics. It's a great site, and should be used more often.