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 long, narrow region in the atmosphere that transport water vapor, like a river in the sky.

A type of low-altitude cloud that forms in uniform layers, often covering the entire sky and producing overcast conditions.

A polar vortex is a circulating mass of air in the atmosphere, typically found in polar regions. This rotating air mass occurs...

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

Although it is also used for light winds, it is the general name given to the daily cyclical winds that occur mostly between...

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

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

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

Thermodynamic changes occurring within a system without any exchange of heat with the surroundings. In the atmosphere, changes...

The term 'cloudy' refers to weather conditions characterized by a significant amount of cloud cover in the sky. This may...