It was a partly sunny day, with no rain in sight. But a rare type of colorful cloud formation that resembles a rainbow ...

If you've looked up over Houston lately and noticed bright rainbow-like patches near the sun, fish-scale patterns rippling across the sky, or even what appear to be holes punched clean through cloud ...

MOLINE, Ill — Perhaps one of the strangest appearing things in the sky you'll ever witness, this unique cloud formation comes in different sizes and shapes. It is, however, usually caused by the same ...