Dark blue cloudy sky

What is Convection?

Convection is the vertical movement of air caused by temperature differences, where warm air rises and cool air sinks. It is a key process in cloud formation and weather dynamics.

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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.

Considerable cloudiness refers to weather conditions where a large portion of the sky is covered with clouds, but some clear...

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

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...

A towering cloud that often reaches great altitudes and is associated with thunderstorms, heavy rain, and sometimes severe...

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

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

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

The amount of water vapor present in the air, which can affect comfort levels and weather conditions.