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 large, organized thunderstorm with a rotating updraft, often producing severe weather such as tornadoes, hail, and heavy...

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

A small, intense downdraft that produces damaging winds at the surface, typically lasting a few minutes and often associated...

A measure of how hot it feels when relative humidity is combined with the actual air temperature, often referred to as the...

A cold core low is a low-pressure system where the coldest temperatures are found near the center. These systems are often...

The situation where there is no advection because the constant pressure surfaces and temperature surfaces in the atmosphere...

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

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

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

In a severe storm, with a swirling motion in its left rear quadrant, a vertically rotating column of air, often seen with...