Have you seen the rainbow scarf cloud in China, Casper?

Something strange and beautiful happened on August 21, Casper, and I almost missed it.

A massive "rainbow scarf cloud" encircled the city of Haikou, Hainan Province in China.

Apparently there's a rational explanation for the rare phenomenon. Experts call it a pileus cloud, which is formed in the wake of a storm when a cloud sits atop the updraft, and the sun's rays bounce off the billions of teeny ice crystals within said-cloud producing a vivid rainbow.

Pileus clouds are exceptionally rare and short lived, but have been spotted above mountains, ash clouds, pyrocumulus clouds (in the wake of a volcano eruption), and mushroom clouds.