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

The percentage of water vapor in the air relative to the maximum amount of water vapor the air can hold at a given temperature.

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

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

A weather front where two air masses meet but neither is strong enough to move the other, often resulting in prolonged periods...

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

Particles such as pollen, grass seeds, or dust in the air that cause allergies and are transported by winds.

A thermodynamic change process in the system without any exchange of heat or transfer of energy between systems. This process...

Snow that rises to 8 feet or higher.

A continental air mass is a large body of air that forms over land, characterized by dry conditions due to the lack of moisture...

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