Why is there a halo? What omen does it represent?

Lunar halo is an optical phenomenon that appears in the aperture around the moon at night. Do you know why this happened? Does the appearance of the lunar halo represent anything? Then let's use constellation knowledge to reveal the secret in detail! Let's have a look!

Why is there a halo?

We call this aperture around the sun or moon "halo". The aperture around the sun is called solar halo, and the aperture around the moon is called lunar halo, which is a common meteorological phenomenon. The color of the halo is generally internal infrared violet, forming a colored halo. When the moonlight passes through the ice crystals in the clouds, the refracted light forms an aperture around the moon. Sometimes it has a silver hole. These "halos" are actually cirrostratus. When cold air meets warm and humid air, it will form rain clouds. At this time, the sky is very cold, and the water droplets are frozen into hexagonal ice crystals. When the moonlight shines on these ice crystals at night, a lunar halo is formed. There are large and small circles in the lunar halo, which only appears at the edge of the moon.

What omen does the halo represent?

The sign of lunar halo is generally windy, usually at noon. The proverb "It rains at noon and it is windy at noon" indicates that there will be a strong wind when the moon is dizzy.

The appearance of solar halo or lunar halo often indicates that the weather will change to a certain extent. Generally, a solar halo means it may rain, and a lunar halo means it will be windy. Sometimes there is a gap in the lunar halo, and the direction of the gap is the direction of the wind. Therefore, there is a folk proverb: "It rains at night when the sun is dizzy, and it is windy at noon when the moon is dizzy" and "It rains when the moon is dizzy".

It doesn't rain in cirrostratus itself, but it may rain in the middle and low clouds, and there is a lot of water, so we say "the sun is dizzy at night and it rains, and the moon is dizzy at noon". The appearance of "halo" indicates that it will be windy and rainy soon. Will it be windy and rainy if you have dizziness? Not necessarily. Whether it is windy or rainy depends on how the low and middle clouds develop in cirrostratus.

If they continue to develop, the clouds will increase and thicken, and it will be windy and rainy. Whether it is "halo" for several days in a row or "halo" for a short time, it depends on the development speed of low and medium clouds after "halo". The development of middle and low clouds moves in quickly, and precipitation comes quickly; If the development is slow, the precipitation will come late; If you don't move in, there will be no precipitation.