ORLANDO, Fla. – Several communities that saw storms Tuesday night caught a glimpse of a rare and beautiful optical phenomenon ...

Tuesday evening, if you happened to be looking up, you may have seen some rainbow-esqe clouds high in the sky.

A beautiful and relatively rare sight was captured Wednesday evening over Palm Beach County as a rainbow cloud formed.

The technical term for this is an iridescence cloud. This happens when sunlight hits tiny ice crystals or water droplets near ...

Nacreous clouds also known as polar stratospheric clouds have been appearing across northern skies. We've rounded up some of the best photos of these rare 'rainbow clouds'.

And while the clouds were visible in the sky all day, one photographer in the area says that the bright colors “really exploded just before sunset”. We saw similar photos of rainbow-like ...

Portlanders may have noticed rainbow-colored clouds floating overhead Sunday afternoon. Viewers Hanna and Emma Buckingham provided these photos of the clouds, which they said were visible ...

Well these rainbow clouds around Spokane have a few of us wondering how they form and what makes them different from the traditional rainbow. It all has to do with refraction.

Arctic observers got a rare festive treat when rainbow-colored clouds appeared in the skies. So-called polar stratospheric clouds were seen over Norway, Sweden, Finland, Alaska, and Scotland. Some ...

Scientists call the spectacle “rainbow clouds” or “iridescent clouds.” The video, credited to Orawan Thongchinda and shared on social media, noted the phenomenon wowed onlookers near Mount ...