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 periodic cooling of sea surface temperatures in the central and eastern Pacific Ocean, often leading to altered global...

The formation of ice crystals on surfaces when the temperature drops below freezing, typically overnight, causing potential...

Precipitation in the form of small balls or lumps of ice that form in thunderstorm updrafts and fall to the ground.

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

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

An instrument for measuring atmospheric pressure.

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

A strong, downward wind caused by a localized column of air sinking rapidly, often resulting in damage similar to that caused...

Ice forms on the surface of highways in a very thin layer that is difficult to distinguish from the color of the asphalt...

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