Unusual Cloud Formation Stock Image

Mammatus Clouds by 3D King Mammatus clouds are some seriously weird looking formations. Also known as mammatocumulus, they often occur in association with severe thunderstorms. Convection and buoyancy of air is the key in understanding how these unusual and scary clouds form. In Mammutus clouds, “evaporation causes pockets of negative buoyancy as it cools the air inside the cloud. This makes the clouds puff downward instead of up like cumulus clouds, and they end up being like upside-down bubbles,”