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Photos, Video: Fog Only Billows Over The Grand Canyon Like This Once In A Decade

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You don't see fog like this everyday. Dense fog covered the Grand Canyon like snowy blankets and cloudy waterfalls in a rare occurrence that happens around once a decade. And it was breathtaking.

At the end of November, there were some factors that led to this "temperature inversion" weather pattern that only happens when cold air on the ground meets the warm air above, reported National Geographic. Although temperature inversions happen once or twice a year, this once-a-decade one was special because of the clear skies.

Higher-than-normal moisture in the air coupled with cold temperatures of 48 degrees Fahrenheit led the moisture to be trapped in the canyon where it didn't evaporate as much, according to A few days before, there was a high-pressure rainstorm that led to clear skies and little wind, cooling the ground quickly. And then, voila, we had ourselves a temperature inversion!

The Grand Canyon National Park captured some stellar images of this rare occurrence, and Paul Lettieri posted this stunning timelapse of this special moment.

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Grand Canyon Timelapse from Paul Lettieri on Vimeo.