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

Condensation is the process by which water vapor in the air cools and changes into liquid water. This process is crucial...

A prefix used in cloud nomenclature to describe middle-altitude clouds that form between 6,500 and 20,000 feet, such as altostratus...

A rapidly rotating column of air extending from a thunderstorm to the ground, capable of causing significant damage.

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

A strong wind typically ranging from 34 to 40 knots (39 to 46 miles per hour) and often associated with rough seas and stormy...

A strong, downward wind caused by a localized column of air sinking rapidly, often resulting in damage similar to that caused...

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

Cloud or rain droplets containing pollutants, such as oxides of sulfur and nitrogen, to make them acidic.

The heating of the Earth by the sun causes daily changes in both the direction and speed of the wind. During the day, ground...

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