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 mass of air surrounding the earth and bound to it more or less permanently by the earth's gravitational attraction.

A periodic cooling of sea surface temperatures in the central and eastern Pacific Ocean, often leading to altered global...

A fixed potential temperature line on adiabats, or the process of thermodynamic changes within a system without any exchange...

A blizzard is a storm that lasts 3 hours or more, with persistent winds/frequent gusts of 35 mph or more along with significant...

The upward movement of air caused by a topographic barrier, such as a mountain, which can lead to cloud formation and precipitation.

A closed low, also known as a cut-off low, is a low-pressure system that is entirely isolated from the main atmospheric circulation...

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

The formation of ice crystals on surfaces when the temperature drops below freezing, typically overnight, causing potential...

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

A bomb cyclone is a large mid-latitude storm that forms when a storm’s central pressure drops (i.e. “bombs out”), resulting...

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