Moon Halo

Halo around moon submitted by ESSC 101 student

Seen Friday, November 5th at approximately 11:00 PM in Tecumseh, MI. What is seen is a Lunar Halo; a thin cirrus cloud, called cirrostratus, that produces a halo about 24 hours before precipitation. A lunar halo is the refraction of light off tiny ice crystals in a thin cirrus cloud that produces a halo of light around the moon. Precipitation did occur in the area the following day due to an approaching warm front that also produces these cirrostratus clouds in advance of the front and serves as a reasonably good forecast guide for precipitation.