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

Precipitation in the form of small balls or lumps of ice that form in thunderstorm updrafts and fall to the ground.

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

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

A term used to identify clouds with a base height below 6,000 feet in the observer's direction. Stratiform clouds consist...

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

The lowest level of a given cloud or cloud layer in the atmosphere, relative to the observer's position above the ground.

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

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

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

Local winds that blow from slopes to peaks as a result of the heating of the top slopes without being affected by general...