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

The lowest level of a given cloud or cloud layer in the atmosphere, relative to the observer's position above the ground.

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

Ball lightning appears during thunderstorms, taking the shape of glowing, electric orbs in the sky. It can appear in a variety...

A type of cloud consisting mostly of small particles such as ice particles.

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

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

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

A periodic warming of sea surface temperatures in the central and eastern Pacific Ocean, significantly influencing global...

A line of severe thunderstorms that can form along or ahead of a cold front, often producing strong winds and heavy rain.

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