Heavy clouds before the storm. (Norfolk, Nebraska)

Lenticular clouds, Grytviken, South Georgia Island.

Mammatus clouds are most often associated with the anvil cloud and severe thunderstorms. They often extend from the base of a cumulonimbus, but may also be found under altocumulus, altostratus, stratocumulus, and cirrus clouds, as well as volcanic ash clouds. When occurring in cumulonimbus, mammatus are often indicative of a particularly strong storm or perhaps even a tornadic storm

This is a rare meteorological phenomenon called a skypunch. When people see these, they think it's the end of the world. Ice crystals form above the high-altitude cirro-cumulo-stratus clouds, then fall downward, punching a hole in the cloud cover. Freakishly weird!

Angel clouds

Stunning and Shocking Thunderstorm Photography

Rare Bubble Clouds

mammatus cloud Nebraska by brettnickeson

The Power of Him by Carlos Gotay, via 500px "In the Beginning, God Created the heavens and the earth. And the Earth(Gaia) was without form and void. And Darkness(Erebus) was upon the face of the Deep(Tethys). And the Spirit of God moved upon the face of the waters." Just sayin'...

awesome clouds

mammatus clouds

I'm a cloud freak.

Fire rainbow cloud: The rare phenomenon appeared behind a storm cloud near Delray Beach, Florida

the storm

Wow. Love storm pictures.

Mjolnir cloud

Cloud spiral in the sky. An Iridescent (Rainbow) Cloud in Himalaya. The phenomenon was observed early am 18 Oct 2009

An All Natural Mushroom Cloud! Woow!

bluepueblo: Darkening Skies, Ancona, Italy photo via adele

Sunset from above the clouds. I love, love, love staring at the sky!!! One of my favorite of God's creation

Wow!