Mammatus clouds adorned the sky over Wichita, Kansas, on April 30 as a severe storm hit the area. The National Weather Service in Wichita issued several thunderstorm warnings for the area ...

These globular clouds usually form underneath the base of a cumulonimbus cloud and are associated with strong thunderstorms. The globular lobes clump together to form small patches that last only ...

and while they are not necessarily an indication of a severe storm, they do signify unstable air within the storm. Unlike most clouds, which are formed by rising air, mammatus clouds are formed ...

KARE 11's John Zeigler says folks often mistake a shelf cloud for a wall cloud, but knowing the difference could save your ...

Severe weather ... cumulus cloud sitting above the anvil and is positioned directly over the primary storm updraft. This feature signifies a rapid and intense upward motion of air. Wall cloud ...