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

Jet streams are strong, fast-flowing air currents in the upper levels of the atmosphere. They form when warm air masses meet...

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

A term used to identify clouds with a base height below 6,000 feet in the observer's direction. Stratiform clouds consist...

A line on a weather map connecting points of equal atmospheric pressure, used to identify high and low-pressure systems.

A sudden and rapid flow of snow masses accumulated on the slopes of mountainous areas under the influence of gravity or a...

The amount of water vapor present in the air, which can affect comfort levels and weather conditions.

Cloud condensation nuclei are tiny particles in the atmosphere, such as dust, salt, or pollutants, that provide surfaces...

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

The upward movement of air caused by a topographic barrier, such as a mountain, which can lead to cloud formation and precipitation.