As temperatures began to plummet back into single digits Friday afternoon, Willmar residents got a lasting light show as a massive sundog lit up the sky just as the sun started to set.
According to almanac.com, sundogs are a rare phenomena that form when sunlight hits clouds of ice crystals and the ice acts as prisms. If the ice crystals are falling flat, then you see a bright point of light on either side of the sun, according to the website.
