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

Large, fluffy white clouds with flat bases, typically indicating fair weather, though they can develop into storm clouds...

Considerable cloudiness refers to weather conditions where a large portion of the sky is covered with clouds, but some clear...

A very cold high pressure that originates over the Arctic Ocean.

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 middle cloud type within the B family in the international cloud classification. These clouds consist of water droplets...

A middle cloud type within the B family in the international cloud classification. These are shaded clouds that can be white...

Temperature scale, abbreviated as °C, found by accepting the freezing point of water at one atmospheric pressure as zero...

Any form of water - liquid or solid - that falls from the atmosphere to the Earth's surface, including rain, snow, sleet,...

Coastal flooding occurs when water from the ocean, sea, or large lakes inundates land areas along the coast, usually due...

The lowest level of a given cloud or cloud layer in the atmosphere, relative to the observer's position above the ground.