South Carolinians near Charleston were surprised on Sunday by one of nature's rarer, and more beautiful, phenomenas: iridescent, prismatic clouds forming a fire rainbow.
Pictures of the incredible rainbow quickly spread around the internet.
The scientific term is "circumhorizontal arc."
Firstly, the rainbows only appear in cirrus clouds made up of ice crystals at high altitudes. But there's also some geometry involved.
"To produce the rainbow colors the sun's rays must enter the ice crystals at a precise angle to give the prism effect of the color spectrum," Lock explained to WCSC.
The effect of ice crystals and that precise angle of light is astonishing...
Amazing, right? Keep your eyes on the skies.
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