Altocumulus floccus illuminated by the moon, Boulder CO, 10:30pm on September 27th, 2015

By Vincent Staverosky for Fall 2015 Clouds First.
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Altocumulus floccus illuminated by the moon, Boulder CO, 10:30pm on September 27th, 2015

Stratocumulus, 9/27/15, 8:40 pm.

Orographic altocumulus stratiformis perlucidus, Boulder CO, 6:18 PM on September 22, 2015

Altocumulus undulatus, 5:30PM on September 22, 2015 in Boulder, Colorado,

Mountain wave clouds, 12:12 pm September 19th in beautiful Crested Butte, Colorado.

Altostratus undulatus and stratocumulus lenticularis undulatus, Boulder CO, September 17th, 2015 at 7:23 PM

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