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

Bright and dark rays with changing colors and contrast in the sky. These rays become visible due to the reflection of atmospheric...

Conduction is the transfer of heat or electricity through a material without the material itself moving. This occurs when...

The percentage of water vapor in the air relative to the maximum amount of water vapor the air can hold at a given temperature.

Condensation pressure deficit refers to the difference between the actual vapor pressure and the saturation vapor pressure...

Anticyclones are areas of high atmospheric pressure that bring hot, dry weather in the summer and cold fronts in the winter.

A weather system refers to the movement of warm and cold air across the globe, usually in a recurring pattern. Systems can...

Air laden with sand and dust, common in areas devoid of permanent vegetation, especially deserts.

An instrument for measuring atmospheric pressure.

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

A long, narrow region in the atmosphere that transport water vapor, like a river in the sky.