Halo
Luminous ring around the sun or moon
A halo is created by the refraction of light on ice crystals in cirrostratus clouds.
22° ring: Most common halo Significance: Harbinger of a warm front
Luminous ring around the sun or moon
A halo is created by the refraction of light on ice crystals in cirrostratus clouds.
22° ring: Most common halo Significance: Harbinger of a warm front