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

Snow that rises to 8 feet or higher.

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

The jet stream forming the boundary between tropical air and sub-tropical air, characterized by isothermal compression and...

A prefix used in cloud nomenclature to describe middle-altitude clouds that form between 6,500 and 20,000 feet, such as altostratus...

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

A sudden electrostatic discharge during a thunderstorm between electrically charged regions of a cloud, between clouds, or...

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

Frozen drizzle is a dangerous type of frozen rain. It’s a light rain that falls in very fine drops, which freezes on contact...

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