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 reflectance rate of a surface, indicating the amount of electromagnetic radiation reflected from the surface. It depends...

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

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

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

A blizzard is a storm that lasts 3 hours or more, with persistent winds/frequent gusts of 35 mph or more along with significant...

A term used to identify clouds with a base height below 6,000 feet in the observer's direction. Stratiform clouds consist...

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

The term used for turbulence occurring in the absence of clouds or cloud-like elements in the visible area. It is often observed...

An instrument that continuously records atmospheric pressure over time. It uses a barometer to measure pressure and creates...

The formation of fog when warm and moist air passes over a cool or cold surface or, conversely, when cold air passes over...