Cirrus Spissatus
Thick plumes of cirrus—spissatus to denote sufficient density to blur or hide the sun—stream high above cliff-forming Ordovician Bighorn dolomite in Tensleep Canyon, Wyoming. These high clouds formed in an area of strengthening upper level lift, ahead of a trough that would support intercept-worthy severe storms in northeastern Wyoming later that day.
10 ENE Ten Sleep WY (16 Jun 7) Looking WNW
44.1087, -107.275