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

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

The process by which a solid changes directly into a gas without first becoming a liquid, such as ice turning into water...

The trapping of heat in the Earth's atmosphere due to greenhouse gases, such as carbon dioxide and methane, which allows...

Weather is the day-to-day meteorological conditions that happen in our atmosphere. Weather can change within minutes, which...

A line on a weather map connecting points of equal atmospheric pressure, used to identify high and low-pressure systems.

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

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

The horizontal transport of any feature within the atmosphere due to the movement of air (wind). This includes phenomena...

The large-scale movement of air that distributes heat and moisture around the Earth, influencing weather patterns and climatic...

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