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 line on a weather map connecting points of equal atmospheric pressure, used to identify high and low-pressure systems.

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

Conduction is the transfer of heat or electricity through a material without the material itself moving. This occurs when...

Confluence refers to the area where two or more air streams or bodies of water meet and combine. In meteorology, it often...

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

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

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

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

A rapidly rotating column of air extending from a thunderstorm to the ground, capable of causing significant damage.

A very cold high pressure that originates over the Arctic Ocean.