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 reflectance rate of a surface, indicating the amount of electromagnetic radiation reflected from the surface. It depends...

A storm characterized by the presence of lightning and its acoustic effect on the Earth's atmosphere known as thunder.

A line on a weather map connecting points of equal atmospheric pressure, used to identify high and low-pressure systems.

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

A continental air mass is a large body of air that forms over land, characterized by dry conditions due to the lack of moisture...

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

A cold core high is a high-pressure system with cold air at its center. These systems are typically associated with clear...

A tropical cyclone, also called a hurricane, is a severe tropical storm with wind speeds in excess of 74 mph. Known as a...

A scale for estimating wind speed based on observed conditions of the sea or land. It ranges from 0 (calm) to 12 (hurricane)...

The process by which a solid changes directly into a gas without first becoming a liquid, such as ice turning into water...