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

Cloud or rain droplets containing pollutants, such as oxides of sulfur and nitrogen, to make them acidic.

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

A low-pressure area with converging winds, rotating counterclockwise in the Northern Hemisphere and clockwise in the Southern...

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

The occurrence of storms resulting from the horizontal advection of cold air at high levels or the horizontal advection of...

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

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

A weather warning means that a weather hazard is occurring, imminent, or likely. In other words, severe weather is happening...

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

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