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 measure of how hot it feels when relative humidity is combined with the actual air temperature, often referred to as the...

The formation of ice crystals on surfaces when the temperature drops below freezing, typically overnight, causing potential...

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

A closed low, also known as a cut-off low, is a low-pressure system that is entirely isolated from the main atmospheric circulation...

The term 'cloudy' refers to weather conditions characterized by a significant amount of cloud cover in the sky. This may...

Observation of the sky from the observer's location where there are no clouds, and there is no obstruction to visibility....

The expected rate of temperature decrease in an adiabatically rising air parcel when there is no heat exchange with the environment....

The occurrence of storms resulting from the horizontal advection of cold air at high levels or the horizontal advection of...

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

A cloud that develops from Cirrus, completely or partially covering the sky, creating a halo effect, thin, sheet-like, milky...