Dark blue cloudy sky

What is Mesocyclone?

In a severe storm, with a swirling motion in its left rear quadrant, a vertically rotating column of air, often seen with a funnel cloud or tornado cloud beneath it and detectable on Doppler radar.

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Glossary

Ball lightning appears during thunderstorms, taking the shape of glowing, electric orbs in the sky. It can appear in a variety...

Air laden with sand and dust, common in areas devoid of permanent vegetation, especially deserts.

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

Ice forms on the surface of highways in a very thin layer that is difficult to distinguish from the color of the asphalt...

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

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

A line of severe thunderstorms that can form along or ahead of a cold front, often producing strong winds and heavy rain.

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

A storm characterized by the presence of lightning and its acoustic effect on the Earth's atmosphere known as thunder.

Observation of the sky from the observer's location where there are no clouds, and there is no obstruction to visibility....