Definitions In case you missed them…these stunning skies May 28, 2013 Art Rangno Cirrus uncinus. Started out looking like radiating lines of Cirrus, but this look is due to perpspective: 12:14 PM 1:09 PM 1:10 PM. Much later…. Well, in cloud time its much later because these guys will gone in a just a few minutes jetting along at 25,000 feet or so. Note those tufts at the top suggest momentary liquid water followed by ice formation and fall out (in LONG strands).