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 long, narrow region in the atmosphere that transport water vapor, like a river in the sky.

In a severe storm, with a swirling motion in its left rear quadrant, a vertically rotating column of air, often seen with...

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

A scale for estimating wind speed based on observed conditions of the sea or land. It ranges from 0 (calm) to 12 (hurricane)...

Condensation is the process by which water vapor in the air cools and changes into liquid water. This process is crucial...

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

The jet stream forming the boundary between tropical air and sub-tropical air, characterized by isothermal compression and...

The branch of science dealing with the laws of motion of air or other gases.

A strong wind typically ranging from 34 to 40 knots (39 to 46 miles per hour) and often associated with rough seas and stormy...

A measurement determined by the wave lengths and sea conditions caused by the effect of wind, and by the movement of tree...