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 polar vortex is a circulating mass of air in the atmosphere, typically found in polar regions. This rotating air mass occurs...

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

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

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

Bright and dark rays with changing colors and contrast in the sky. These rays become visible due to the reflection of atmospheric...

A large, organized thunderstorm with a rotating updraft, often producing severe weather such as tornadoes, hail, and heavy...

A periodic warming of sea surface temperatures in the central and eastern Pacific Ocean, significantly influencing global...

A thick cloud of tiny water droplets suspended in the atmosphere near the Earth's surface, significantly reducing visibility.

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

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