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

The formation of ice crystals on surfaces when the temperature drops below freezing, typically overnight, causing potential...

Convection is the vertical movement of air caused by temperature differences, where warm air rises and cool air sinks. It...

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

The mass of air surrounding the earth and bound to it more or less permanently by the earth's gravitational attraction.

The term 'cloudy' refers to weather conditions characterized by a significant amount of cloud cover in the sky. This may...

The horizontal transport of any feature within the atmosphere due to the movement of air (wind). This includes phenomena...

A drainage wind that flows downhill due to gravity, often associated with cold air descending from elevated regions.

A condition in which the stratification of the atmosphere depends on both air temperature and pressure, and where surfaces...

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

A tropical cyclone, also called a hurricane, is a severe tropical storm with wind speeds in excess of 74 mph. Known as a...