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

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

A mass of very cold, dry air that mostly originates over the Arctic Ocean.

The amount of radiation, heat, or light passing through or flowing from a unit area of a surface.

A strong, downward wind caused by a localized column of air sinking rapidly, often resulting in damage similar to that caused...

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

Any form of water - liquid or solid - that falls from the atmosphere to the Earth's surface, including rain, snow, sleet,...

Snow that rises to 8 feet or higher.

In a severe storm, with a swirling motion in its left rear quadrant, a vertically rotating column of air, often seen with...

The lowest level of a given cloud or cloud layer in the atmosphere, relative to the observer's position above the ground.

The narrow region between 35-40 ° N and S latitudes in the Northern and Southern Hemispheres, lying between the tropical...