Sierra Wave, Mounts Dana and Gibbs. Yosemite National Park, California. July 15, 2016. © Copyright 2016 G Dan Mitchell – all rights reserved.

Evening Sierra wave clouds build above Mounts Dana and Gibbs along the Sierra crest.

This is how the show began, though I had my suspicions much earlier in the afternoon. When conditions are right, a “Sierra wave” cloud formation can form along and just to the east of the Sierra Nevada crest. It can be a long, undulating cloud formation, sometimes with many stacked layers — think of lenticular clouds that are many tens of miles long. The clouds simply sit above the crest, unmoving (though subtly transitioning in form) for hours. They are very impressive in broad daylight, but in the evening when conditions are right they are lit by the last sun coming from far west of the range, and the colors can be quite nearly unbelievable.

I first saw some interesting potential clouds shortly after noon, and I began to keep an eye on them. As evening approached I thought that perhaps they might dissipate or dissolve enough that the shape would not be compelling, though some sunset color was certainly a possibility. I set out to photograph something else entirely, slowly wandering up to the far end of a subalpine meadow by myself and photographing for perhaps an hour and a half. At this point the clouds looked like they were starting to hold greater potential for something quite special, so with about 45 minutes remaining before sunset I began to head back to the western edge of the meadow, from which this view included the clouds, the Dana Fork of the Tuolumne Meadow, and the summits of Mounts Dana and Gibbs. If you are wondering if the color finally developed… stay tuned!

G Dan Mitchell is a California photographer and visual opportunist. His book, “California’s Fall Color: A Photographer’s Guide to Autumn in the Sierra” is available from Heyday Books and Amazon.
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