What is a lunar halo? Under what circumstances will there be a lunar halo? There is a big circle around the moon.

Lunar halo is also called "wind circle". Moonlight is refracted by clouds, forming an aperture around the moon, which can be used as a sign of weather changes.

Possible consequences of certain symptoms.

Before the weather changes, we sometimes see one or more colored or white apertures around the sun or the moon. The sunlight and the moon light look dim.

What's going on here? 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". This is a strange meteorological phenomenon. The color of halo is generally infrared violet.

Halo-the phenomenon that light is refracted by moonlight when it passes through ice crystals in clouds. It turns into a colorful halo with infrared violet inside.

The appearance of solar halo or lunar halo often indicates that the weather will change to some extent. Generally speaking, a solar halo means it may rain, while a lunar halo means it will be windy. Therefore, there is a folk proverb: "It rains in the middle of the night and it is windy at noon." .

In ancient times, the lunar halo was called the hairy moon!