IT'S A SONIC RAIN BOOM! Circumhorizon Arc (aka Fire Rainbow) - an ice halo formed by ice crystals located in cirrus clouds. Light passes through the hexagonal crystals and if seen at the right angle forms a rainbow cloud.
Fire rainbows are not actually rainbows and have no connection with fires. The true name for this exquisitely beautiful optical effect is “circumhorizontal arc”. The phenomenon can only be viewed under certain precise conditions: the cirrus clouds that ac
Cloud Art or Nature's Cloud Symphonies: this multi-coloured cloud phenomenon is called Sundog: rainbow cloud when ice crystals appear in clouds & refract sun's rays. Photographer Robert Arn, here in Heyworth, Illinois, US
13 fenômenos naturais espetaculares pouco conhecidos
Photographer captures rare 'fire rainbow cloud' above Florida as Mother Nature puts on spectacular light show Ken Rotberg spotted unusual phenomenon as sun dropped behind a storm cloud in the early evening Rare sight also known as a 'circumhorizon arc'.