It was cold today and from late morning on there were sun dogs in the sky. A sun dog is technically a perihelion, a bright circular spot on a solar halo. It is an atmospheric optical phenomenon primarily associated with the reflection or refraction of sunlight by small ice crystals making up cirrus or cirrostratus clouds. We only see them when it is really cold. The first picture is early afternoon then late in the day this sun dog produced a sun pillar as the sun was setting. Shelley took a few pictures. This is one of them.
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