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

Cloud condensation nuclei are tiny particles in the atmosphere, such as dust, salt, or pollutants, that provide surfaces...

Jet streams are strong, fast-flowing air currents in the upper levels of the atmosphere. They form when warm air masses meet...

An image on the weather radar that is convex to the direction of movement and resembles an arc shape, caused by mesoscale...

The large-scale movement of air that distributes heat and moisture around the Earth, influencing weather patterns and climatic...

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

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 formation of fog when warm and moist air passes over a cool or cold surface or, conversely, when cold air passes over...

A weather warning means that a weather hazard is occurring, imminent, or likely. In other words, severe weather is happening...

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