cloud iridescence ©

High cirrus clouds (and there have been a lot of them racing above us recently) are composed of tiny ice crystals or water droplets. When the sunlight travels through the ice crystals there is sometimes a rainbow-like effect creating iridescent clouds.

Technical: automatic iPhone Pro Max image taken at 1:15 pm, June 25, 2024: ISO 32, 1/2050 sec, aperture f/2.8