Noticed a cloud rainbow in Alpnachstad, near Pilatusbahn. This rainbow was sitting on a cloud for couple minutes and disappeared leaving only the white cloud. As I read it is a very rare event happening with several strict weather conditions.
From wiki
Iridescent clouds are a diffraction phenomenon caused by small water droplets or small ice crystals individually scattering light.
https://i.redd.it/linij73fui6d1.jpeg
Posted by Likich