Many of our viewers have noticed rainbow clouds over the past few days. This is actually a rare phenomenon called "cloud iridescence". This happens when sunlight is diffracted off of tiny water ...

FARGO — Sometimes, you may look up to the sky and see a rainbow in a cloud, but there is no rain around. Likely what you are seeing is a type of atmospheric optical phenomenon known as cloud ...

PORTLAND, Ore. (KOIN) — Stormy weather is on the way for much of the Pacific Northwest this weekend, leading to rare sight appearing over the skies of Vancouver. A rare cloud iridescence briefly ...

PALM BEACH COUNTY, Fla. — A beautiful and relatively rare sight was captured Wednesday evening over Palm Beach County as a rainbow cloud formed. Cloud iridescence is also called a rainbow cloud or a ...

The ghost catfish transforms from glassy to glam when white light passes through its mostly transparent body. Now, scientists know why. The fish’s iridescence comes from light bending as it travels ...

Look carefully at these photos from Mollie Holleman. Shot from Hallandale, you can see the silky streaks of what appears to be a rainbow visible high above. It’s cloud iridescence, and it’s often ...

Happy Monday and welcome to another edition of the Beyond The Forecast newsletter! We’re coming off a beautiful weekend in the Commonwealth, which included reports of an uncommon sight in Sunday’s ...