Dark blue cloudy sky

What is Ball Lightning?

Ball lightning appears during thunderstorms, taking the shape of glowing, electric orbs in the sky. It can appear in a variety of colors, from blue to orange to yellow, and is sometimes accompanied by a hissing sound and an acrid odor.

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Glossary

The temperature at which air becomes saturated with moisture and water vapor begins to condense into liquid form, leading...

Observation of the sky from the observer's location where there are no clouds, and there is no obstruction to visibility....

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

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

A drainage wind that flows downhill due to gravity, often associated with cold air descending from elevated regions.

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

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

Convection is the vertical movement of air caused by temperature differences, where warm air rises and cool air sinks. It...

Confluence refers to the area where two or more air streams or bodies of water meet and combine. In meteorology, it often...

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