Dark blue cloudy sky

What is Cumulonimbus?

A towering cloud that often reaches great altitudes and is associated with thunderstorms, heavy rain, and sometimes severe weather like hail or tornadoes.

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Glossary

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A middle cloud type within the B family in the international cloud classification. These are shaded clouds that can be white...

Cloud or rain droplets containing pollutants, such as oxides of sulfur and nitrogen, to make them acidic.

A long, narrow region in the atmosphere that transport water vapor, like a river in the sky.

A distinct layer in a body of water where the temperature changes rapidly with depth, separating warmer surface water from...

A sudden electrostatic discharge during a thunderstorm between electrically charged regions of a cloud, between clouds, or...

A bomb cyclone is a large mid-latitude storm that forms when a storm’s central pressure drops (i.e. “bombs out”), resulting...

The mass of air surrounding the earth and bound to it more or less permanently by the earth's gravitational attraction.

A sudden and rapid flow of snow masses accumulated on the slopes of mountainous areas under the influence of gravity or a...