These types of thunderstorms are notable for spawning some of the most severe weather. "What makes a supercell unique from all other thunderstorm types is that it contains a deep and persistent ...

A giant storm system captured on video over Montana looks like a giant spaceship descending on earth. But it’s actually a unique type of severe storm system called a mothership supercell.

The supercell, king of thunderstorms, disruptor of the Great Plains, is a dangerous weather threat wherever it forms. Tornadoes, flooding, enormous hailstones, damaging winds and lightning are some of ...

It began at about noon near Babb. It broke up over the Highwood Mountains. Over its 193-mile, southeasterly journey across northcentral Montana it produced dark and otherworldly-looking skies and left ...