Apparently this is for real

[MadamDotty]

A sight as elusive as a Cheshire cat / Photographer spots rare heavenly arc
This circumzenithal arc, photographed in Concord, looks like an upside-down rainbow but is formed differently. Photo by Andrew G. Saffas, special to the Chronicle

 

[sonkie]

omg ........how strange......we saw a rainbow this morning but right way up, then we got lashed by hail and torrential rain mixed together, it looked as if it had been snowing.