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

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

The percentage of water vapor in the air relative to the maximum amount of water vapor the air can hold at a given temperature.

A measurement determined by the wave lengths and sea conditions caused by the effect of wind, and by the movement of tree...

Particles such as pollen, grass seeds, or dust in the air that cause allergies and are transported by winds.

The measure of the water vapor or moisture content in the air, expressed as the mass of water vapor per unit volume of air....

A middle cloud type within the B family in the international cloud classification. These clouds consist of water droplets...

The upward movement of air caused by a topographic barrier, such as a mountain, which can lead to cloud formation and precipitation.

The jet stream forming the boundary between tropical air and sub-tropical air, characterized by isothermal compression and...

Bright and dark rays with changing colors and contrast in the sky. These rays become visible due to the reflection of atmospheric...

A thin, white cloud layer that is intertwined or separate, arranged in regular order, and does not cast a shadow.