BISMARCK, ND (KXNET) — For a brief moment, the sky over Bismarck turned into a series of snow-covered hills. A rare form of clouds blossomed over the city Friday afternoon, creating the illusion ...

The multi-colored clouds are known as polar stratospheric clouds (PSCs) and look similar to auroras blazing in the sky. However ... By usual standards, no clouds of any kind form without our ...