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

A towering cloud that often reaches great altitudes and is associated with thunderstorms, heavy rain, and sometimes severe...

A narrow band of strong winds in the upper atmosphere, typically flowing from west to east and influencing weather patterns.

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

A thermodynamic change process in the system without any exchange of heat or transfer of energy between systems. This process...

Frozen drizzle is a dangerous type of frozen rain. It’s a light rain that falls in very fine drops, which freezes on contact...

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

The term used for semi-stationary high-pressure centers such as the Azores and North Pacific Highs, which occur in the narrow...

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

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

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