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

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

Nimbostratus clouds are thick, dark, gray clouds associated with rainy and gloomy days that block the Sun. These clouds,...

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

Occurs when centers of high pressure and/or low pressure set up over a region in such a way that they prevent other weather...

Precipitation in the form of small balls or lumps of ice that form in thunderstorm updrafts and fall to the ground.

The large-scale movement of air that distributes heat and moisture around the Earth, influencing weather patterns and climatic...

The term used for turbulence occurring in the absence of clouds or cloud-like elements in the visible area. It is often observed...

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

The decrease in temperature with height in an adiabatically rising air parcel (lapse rate). For dry air, this value is 1...