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

An anvil is a cloud mostly composed of ice particles. Otherwise known as a cumulonimbus cloud, an anvil has reached the stratospheric...

A bomb cyclone is a large mid-latitude storm that forms when a storm’s central pressure drops (i.e. “bombs out”), resulting...

Condensation pressure deficit refers to the difference between the actual vapor pressure and the saturation vapor pressure...

A fixed potential temperature line on adiabats, or the process of thermodynamic changes within a system without any exchange...

A line of severe thunderstorms that can form along or ahead of a cold front, often producing strong winds and heavy rain.

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

A middle cloud type within the B family in the international cloud classification. These are shaded clouds that can be white...

A small, intense downdraft that produces damaging winds at the surface, typically lasting a few minutes and often associated...

An elongated area of relatively low atmospheric pressure, often associated with unsettled weather conditions like storms...

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