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

Weather is the day-to-day meteorological conditions that happen in our atmosphere. Weather can change within minutes, which...

Weather conditions are the components that comprise the state of the atmosphere. The six main weather conditions are temperature,...

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

An instrument used to measure the speed, force, and sometimes the direction of the wind. It can be cup or pressure tube anemometers....

Conduction is the transfer of heat or electricity through a material without the material itself moving. This occurs when...

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

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

Considerable cloudiness refers to weather conditions where a large portion of the sky is covered with clouds, but some clear...

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

A strong, downward wind caused by a localized column of air sinking rapidly, often resulting in damage similar to that caused...