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

Observation of the sky from the observer's location where there are no clouds, and there is no obstruction to visibility....

A weather front formed when a cold front overtakes a warm front, lifting the warm air off the ground and resulting in a mix...

An anvil is a cloud mostly composed of ice particles. Otherwise known as a cumulonimbus cloud, an anvil has reached the stratospheric...

Particles such as pollen, grass seeds, or dust in the air that cause allergies and are transported by winds.

Large, fluffy white clouds with flat bases, typically indicating fair weather, though they can develop into storm clouds...

A deviation from the normal or expected value in atmospheric or climatic conditions, often used in meteorology to identify...

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

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

The expected rate of temperature decrease in an adiabatically rising air parcel when there is no heat exchange with the environment....