CORRECTION: The phenomena was previously described as an iridescent cloud but is instead a circumhorizon arc.
CLARKSBURG, W.Va. – Have you ever heard of sun halos or circumhorizon arcs? Well, both weather phenomena were observed across north-central West Virginia Monday afternoon.
A sun halo is a ring that forms around the sun (or moon at night) that is caused when ice crystals within upper-level cirrus clouds refract light from the sun.
Circumhorizon arcs occur as a 22 degree halo around the sun and are orientated parallel to the horizon. The arcs become colorful when cirrus clouds act as a prism and refract the light from the sun to display a rainbow like feature in the cloud.
If you have weather photos of your own, email them to firstname.lastname@example.org