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

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

The occurrence of storms resulting from the horizontal advection of cold air at high levels or the horizontal advection of...

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

An instrument for measuring atmospheric pressure.

Snow that rises to 8 feet or higher.

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

The term used for semi-stationary high-pressure centers such as the Azores and North Pacific Highs, which occur in the narrow...

A sudden electrostatic discharge during a thunderstorm between electrically charged regions of a cloud, between clouds, or...