We've all seen a rainbow, but have you ever heard of a phenomenon called a fire rainbow? Scientifically, it's called a circumhorizontal arc, and it's actually an optical effect - a type of halo formed by plate-like ice crystals at high levels of cirrus clouds.

On a sunny day, cumulus clouds rise upward, pushing layers of moist air even higher, where they cool and condense, forming cloud caps.
When these cloud caps form very quickly, their water droplets become roughly the same size, which is the perfect condition for rainbow colors.
Photographer daslasher1 was in the perfect place at the perfect time to capture a fiery rainbow in the sky.
How often you see this "fuzzy rainbow" depends on your location and latitude.
In the United States, for example, this is a relatively common phenomenon that can be observed several times in one summer.
But in northern Europe you don't see this very often.




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