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 bomb cyclone is a large mid-latitude storm that forms when a storm’s central pressure drops (i.e. “bombs out”), resulting...

An elongated area of relatively low atmospheric pressure, often associated with unsettled weather conditions like storms...

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

The state of the atmosphere when it contains the maximum amount of water vapor possible at a given temperature and pressure.

Ball lightning appears during thunderstorms, taking the shape of glowing, electric orbs in the sky. It can appear in a variety...

A rapidly rotating column of air extending from a thunderstorm to the ground, capable of causing significant damage.

Jet streams are strong, fast-flowing air currents in the upper levels of the atmosphere. They form when warm air masses meet...

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

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

Meteorology is the scientific study of the atmosphere and weather processes. It involves observing, analyzing, and forecasting...