MAMMATUS clouds are most often associated with the anvil cloud & severe thunderstorms. They often extend from the base of a cumulonimbus but may also be found under altocumulus, altostratus, stratocumulus, & cirrus clouds as well as volcanic ash clouds^
Storm chaser Mike Hollingshead from Nebraska has captured incredible photos of ‘bubble clouds’ in the sky (shown). Known as mammatus clouds the amazing structures form behind storms. While most clouds.