While the penumbral eclipse was difficult to see due to the increasing clouds, the high cirrus did allow a "moon dog" to form Friday evening.

Moon dogs are similar to sun dogs except they form at night. The more official name is "paraselene."

Look for a moon dog when you see high, thin, cirrus clouds near the moon, especially a bright, full moon.

The moon dogs form when light from the moon bounces off the ice crystals from high, cirrus clouds. In some cases it can act like a prism, causing the colors of the rainbow appearing inside the moon dog.

The false moon, as it is sometimes called, can appear on either side of the moon, and sometimes on both sides.