Jul 31, 2025
Up up and away
seen from Norway
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Up up and away
A pileus iridescent cloud over Ethiopia.
Pictured, behind this darker cloud, is a pileus iridescent cloud, a group of water droplets that have a uniformly similar size and so together diffract different colors of sunlight by different amounts. The featured image was taken last month in Pu'er, Yunnan Province, China. Also captured were unusual cloud ripples above the pileus cloud. The formation of a rare pileus cloud capping a common cumulus cloud is an indication that the lower cloud is expanding upward and might well develop into a storm.
Image Credit & Copyright: Jiaqi Sun （å™å˜‰çªï¼‰
my FIRST EVER capture of an iridescent pileus cloud! plus the first time I’d actually seen one myself 🤩🤩🤩
bonus rainbow as the storm was passing!
Pileus cloud, China
Cumulus cloud wearing a pileus cloud hat, August 23, 2018
An iridescent pileus cloud over China.