Prior to severe thunderstorms in Cumberland and Sampson counties Sunday evening, some of you saw a unique cloud formation.

Have you ever seen a ceiling of clouds with bumpy, pouch-like formations hanging down? Those are called "mammatus clouds." FOX Weather Meteorologist Ari Sarsalari explains how they form and whether ...

Artist Statement: Mammatus clousds boil over the Oklahoma countryside as a spring thunderstorm rolls in. As the clouds flow like waves in the ocean, a bold of lightening illuminates the sky above the ...