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 ...

An interesting phenomenon unfolded Monday in the sky over Houston as nearly perfect rows of clouds were spotted. Video submitted to us by a subscriber showed the unmistakable appearance of what are ...

Some on social media speculated that it was a sign of an eruption, however the National Park Service (NPS) and the United States Geological Survey (USGS) quickly put those concerns to rest. Mount ...

Social media sites exploded with activity Monday night as locals posted pictures of a mushroom cloud formation visible from most of Pitkin, Eagle and Garfield counties. Meteorologist Dennis Phillips ...

Over the Florida Keys, these celestial wonders were noticed by NASA and fishermen alike. The sky formations are known as "cavum clouds" or "fallstreak holes." Here we explore unique facts about these ...