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 cold core high is a high-pressure system with cold air at its center. These systems are typically associated with clear...

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

A large body of air having similar horizontal temperature and moisture characteristics.

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

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

A type of low-altitude cloud that forms in uniform layers, often covering the entire sky and producing overcast conditions.

A cloud that develops from Cirrus, completely or partially covering the sky, creating a halo effect, thin, sheet-like, milky...

A cloud of irregular appearance, composed of irregular cloud fragments.

A tropical cyclone, also called a hurricane, is a severe tropical storm with wind speeds in excess of 74 mph. Known as a...

The amount of radiation, heat, or light passing through or flowing from a unit area of a surface.