Sun dogs are caused by the refraction of sunlight by ice crystals in the atmosphere. Sun dogs typically appear as a pair of colored patches of light, around 22° to the left and right of the Sun, and at the same altitude above the horizon as the Sun. https://t.co/Lz4fD3pDMb pic.twitter.com/yixW1fXKFB
— National Weather Service (@NWS) January 27, 2021