What happens if there is a circle around the moon

According to folklore, "A ring around the sun or moon means rain or snow is coming soon. While that can be true, the clouds that caused the ring Wednesday night came from a rain storm across the south.

The ring, or a lunar halo, is caused by the refraction and reflection of light from ice crystals that are suspended in thin, wispy, cirrus or cirrostratus clouds that are at high altitudes. As light passes through the ice crystals, it is bent at a degree angle, creating a halo of 22 degrees.

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Lunar halo with rainbow. Photo credit: Gustav Sanchez. These are located on either side of the lunar ring, parallel to the horizon. In certain conditions, especially in the Arctic, where the ice crystals can be close to the surface, you can get a moon pillar.

The light from the Moon reflects off the ice crystals near the surface, creating a glow near the horizon. Photo credit: Mary Spicer.