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

Considerable cloudiness refers to weather conditions where a large portion of the sky is covered with clouds, but some clear...

The percentage of water vapor in the air relative to the maximum amount of water vapor the air can hold at a given temperature.

Coastal flooding occurs when water from the ocean, sea, or large lakes inundates land areas along the coast, usually due...

A mass of very cold, dry air that mostly originates over the Arctic Ocean.

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

A condition in which the stratification of the atmosphere depends on both air temperature and pressure, and where surfaces...

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

The temperature at which air becomes saturated with moisture and water vapor begins to condense into liquid form, leading...

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

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