Altocumulus lenticularis, Boulder CO, November 5, 2015 at 5:00 pm.

By Devin Sakamoto for Fall 2015 Clouds Second.
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Altocumulus lenticularis, Boulder CO, November 5, 2015 at 5:00 pm.

Mountain wave cloud, Boulder CO, 4:44PM pm 11/05/15.

Shark cumulus, Erie, Colorado, 4:30 pm on November 5th 2015, with a bit of cloud added to make the tail.

Cumulus humilis, 12:30 pm on November 5th, 2015, Boulder CO.

Time lapse of clearing stratus at the end of an upslope event, Boulder CO, Nov. 5, 2015 from 10:25 AM to 12:17 PM

Altostratus, 7:15 AM on November 5, 2015 in Eldrege, CO.

Altocumulus and cirrocumulus undulatus, Boulder CO, November 2, 2015 at 6:50 am.

Cirrostratus, altostratus and stratocumulus, 10:30 am on Sunday November 1st 2015, near Laramie, WY.

Mountain wave clouds, Boulder CO, 6:30 PM on October 31st, 2015

Altocumulus standing lenticularis translucidus, October 31st, 2015 at 4:34 PM, Federal Heights CO.