White Rainbows Frequent Only 2 Places in the World

By Elizabeth Armstrong Moore, Newser Staff

January 3, 2017

NewserWaterfalls are among the most reliable places to catch a rainbow, but only two on the planet offer up a regular display of its close cousin, the moonbow: Cumberland Falls in Kentucky and Victoria Falls on the Zambia-Zimbabwe border. Also called a white rainbow, a moonbow appears when moonlight (which is sunlight reflected off the moon) in the days just before, during, and after a full moon hits the mist generated by the falls. 

Because we can't see colors well in low light, a moonbow appears white, reports BBC Travel, though photographers can use long exposures to capture its actual colors. Moonbows are occasionally—but not regularly—seen elsewhere in the world, including at Yosemite Falls in California.

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Photo: Getty Images

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