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 names given to the winds blowing from the four cardinal directions (north, east, south, and west - N, E, S, W) on a compass.

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

A tropical cyclone with sustained winds of at least 74 miles per hour, characterized by a central eye, strong winds, and...

A thin, white cloud layer that is intertwined or separate, arranged in regular order, and does not cast a shadow.

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

Precipitation in the form of small balls or lumps of ice that form in thunderstorm updrafts and fall to the ground.

A type of cloud consisting mostly of small particles such as ice particles.

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

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

A distinct layer in a body of water where the temperature changes rapidly with depth, separating warmer surface water from...