Rainbow Cloud_1
© Fox12 Oregon/KPTV
Did you see a strange rainbow-like cloud in the sky on Friday? You weren't alone. A number of FOX 12 viewers shared their photos of the rainbow cloud. Most of the reports centered in the Wilsonville area.

FOX 12 meteorologist Stephanie Kralevich said it's a fragment of a circumhorizontal arc, which is an optical phenomenon formed by plate-shaped ice crystals in high cirrus clouds. The clouds are common this time of year when the sun is high in the sky and high, thin clouds move by.
Rainbow Cloud_2
© Fox12 Oregon/KPTV
More photos here.