Dark blue cloudy sky

What is Lightning?

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

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Glossary

A prefix used in cloud nomenclature to describe middle-altitude clouds that form between 6,500 and 20,000 feet, such as altostratus...

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

The temperature at which air becomes saturated with moisture and water vapor begins to condense into liquid form, leading...

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

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

The measure of the water vapor or moisture content in the air, expressed as the mass of water vapor per unit volume of air....

An elongated area of relatively low atmospheric pressure, often associated with unsettled weather conditions like storms...

Confluence refers to the area where two or more air streams or bodies of water meet and combine. In meteorology, it often...

A closed low, also known as a cut-off low, is a low-pressure system that is entirely isolated from the main atmospheric circulation...

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