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

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

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

A cold core low is a low-pressure system where the coldest temperatures are found near the center. These systems are often...

Weather conditions are the components that comprise the state of the atmosphere. The six main weather conditions are temperature,...

Although it is also used for light winds, it is the general name given to the daily cyclical winds that occur mostly between...

An image on the weather radar that is convex to the direction of movement and resembles an arc shape, caused by mesoscale...

A periodic cooling of sea surface temperatures in the central and eastern Pacific Ocean, often leading to altered global...

A measurement determined by the wave lengths and sea conditions caused by the effect of wind, and by the movement of tree...

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

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