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

The upward movement of air caused by a topographic barrier, such as a mountain, which can lead to cloud formation and precipitation.

The term used for semi-stationary high-pressure centers such as the Azores and North Pacific Highs, which occur in the narrow...

A weather warning means that a weather hazard is occurring, imminent, or likely. In other words, severe weather is happening...

The large-scale movement of air that distributes heat and moisture around the Earth, influencing weather patterns and climatic...

A line of severe thunderstorms that can form along or ahead of a cold front, often producing strong winds and heavy rain.

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

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

A polar vortex is a circulating mass of air in the atmosphere, typically found in polar regions. This rotating air mass occurs...

CONQ is a meteorological abbreviation for significant convection observed in a specific area, often indicating unstable atmospheric...

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