A beautiful and somewhat rare phenomenon has graced the Grand Canyon for the second time this winter.
The fog is formed by a total cloud inversion, which occurs when cold air is trapped in the canyon and topped by a layer of warm air. If the moisture in the cold pool is sufficient, condensation will occur and fog will form.
“While typically a rare event, this is the second cloud inversion at the Grand Canyon in six weeks,” said the Interior Department.
These total inversions are actually a rare event, according to the National Weather Service, who says that the phenomenon typically happens just once every several years. The previous total cloud inversion was in mid-December.