Meteorologist Drew Tuma said that this is the so-called moon ring, winter halo or 22-degree halo. At that time, “ice crystals suspended on thin, thin cirrus clouds refracted the moon’s light into a perfect The circle”.
Tuma added that this is common, “more common than rainbows.”
Related: 2020 Christmas Star: How to see Jupiter and Saturn intersect in the Bay Area
Weather.gov said that the halo around the sun or moon is usually regarded as a bright white ring, which may sometimes be colored.
Tuma suggested that we often miss the lunar halo, because there are very few people overnight.
“In folklore, it is said that the moon ring will warn of an impending storm,”
Ice crystals hanging on the sparse cirrus clouds refract the moon, forming a perfect circle
In folklore, it is said that the moon ring will warn of the approaching storm 🙂 https://t.co/iP4ws6T0r8
-Drew Tuma (@DrewTumaABC7) December 27, 2020
In a year when nothing feels normal, the ring around the moon tonight is very normal. Millions of tiny ice crystals in the cirrus clouds refract the lunar light into a perfect circle. It usually happens before the storm, as we expected tomorrow night.
-Drew Tuma (@DrewTumaABC7) December 27, 2020
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