Rare 'rainbow cloud' seen in Brazil

EMBED </>More Videos

Rainbow clouds occur when light scatters through water droplets or ice crystals. (Jean Oliveira via Storyful)

A rare and mesmerizing rainbow cloud was spotted in the skies above Caxias, Brazil, on Dec. 6.

A video was posted to Facebook of the weather phenomenon known as cloud iridescence.

According to AccuWeather, "cloud iridescence occurs when water droplets or ice crystals scatter light."
Related Topics: