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

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

A middle cloud type within the B family in the international cloud classification. These are shaded clouds that can be white...

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

A low-pressure area with converging winds, rotating counterclockwise in the Northern Hemisphere and clockwise in the Southern...

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

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

A cold core high is a high-pressure system with cold air at its center. These systems are typically associated with clear...

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

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