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Photo by Russ Matteo of the clouds before the Norfolk Nebraska hailstorm! Photo by Russ Matteo of the clouds before the Norfolk Nebraska hailstorm! Photo by Russ Matteo of the clouds before the Norfolk Nebraska hailstorm!

Sometimes very ominous in appearance, mammatus clouds are harmless and do not mean that a tornado is about to form; a commonly held misconception. In fact, mammatus are usually seen after the worst of a thunderstorm has passed.

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^

cloud formations - Yahoo Image Search Results

Cloud types - I remember these from grade science class

mammatus

A rare cloud formation called a mammatus, where clouds take on a bubble-like shape, appeared in the skies above Regina, Saskatchewan in Canada. Love it! So geeky hehe

Volcano at Mt Pinatubo-in the Phillipines on June 15, 1991

Sand storm<----seen this before on tv but its not a sandstorm, thats a pyroclastic cloud from a volcano

A little too close... for comfort. by Sean R. Heavey

"A little to close for comfort" by Sean R. Heavey

Moon. S)

Harvest Moon - in honor of my brother Beachum Bowman. Before he passed away he called me one night and wanted me to go outside to see the harvest moon~it was beautiful!

Vakkert!

A fun image sharing community. Explore amazing art and photography and share your own visual inspiration!

Whoa! Looks cool in a picture, but probably terrifying in person.

This is an awesome picture. Supercell Thunderstorm by Sean Heavey, nationalgeographic: A supercell thunderstorm rolls across the Montana prairie at sunset. This was a winning shot in the 2010 National Geographic Nature Gallery Photo Contest.

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