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 prefix used in cloud nomenclature to describe middle-altitude clouds that form between 6,500 and 20,000 feet, such as altostratus...

Although it is also used for light winds, it is the general name given to the daily cyclical winds that occur mostly between...

A weather watch means there is a risk of weather hazards in the near future, which could pose a threat to life/property....

A weather warning means that a weather hazard is occurring, imminent, or likely. In other words, severe weather is happening...

Weather conditions are the components that comprise the state of the atmosphere. The six main weather conditions are temperature,...

The decrease in temperature with height in an adiabatically rising air parcel (lapse rate). For dry air, this value is 1...

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

The trapping of heat in the Earth's atmosphere due to greenhouse gases, such as carbon dioxide and methane, which allows...

Thermodynamic changes occurring within a system without any exchange of heat with the surroundings. In the atmosphere, changes...

The situation where there is no advection because the constant pressure surfaces and temperature surfaces in the atmosphere...