Dark blue cloudy sky

What is Hail?

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

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Glossary

A thermodynamic change process in the system without any exchange of heat or transfer of energy between systems. This process...

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

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

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

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

Ice forms on the surface of highways in a very thin layer that is difficult to distinguish from the color of the asphalt...

A large body of air having similar horizontal temperature and moisture characteristics.

A storm characterized by the presence of lightning and its acoustic effect on the Earth's atmosphere known as thunder.

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

The amount of radiation, heat, or light passing through or flowing from a unit area of a surface.