A variety of clouds east of Boulder CO, 2/16/14 at 10 :56 am: mountain wave clouds, stratocumulus stratiformis opacus undulatus, altocumulus stratiformis perlucidus and cirrus undulatus.
Video at 60 fps, rendered at a 2000% speed increase, showing a mountain wave cloud formation, 2/14, 1:00 pm
Altocumulus lenticularis, mountain wave clouds, were captured at 12:25 pm on February 14, 2014 facing southeast, Boulder CO.
