Tag Archives: Grand Canyon

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Once or twice a year, but almost never with the clear sky backdrop pictured here (last Friday), a temperature inversion phenomenon appears to fill Arizona’s Grand Canyon to the brim with fog – cool air trapped at the bottom of the canyon, held in place by a layer of warm air above, creating low level clouds.

(Video: Paul Lettieri. Pix: Erin Whittaker, Ben Mayberry)