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

A sudden electrostatic discharge during a thunderstorm between electrically charged regions of a cloud, between clouds, or...

Large, fluffy white clouds with flat bases, typically indicating fair weather, though they can develop into storm clouds...

A weather front where two air masses meet but neither is strong enough to move the other, often resulting in prolonged periods...

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

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

Convection is the vertical movement of air caused by temperature differences, where warm air rises and cool air sinks. It...

Occurs when centers of high pressure and/or low pressure set up over a region in such a way that they prevent other weather...

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

The decrease in temperature with height in an adiabatically rising air parcel (lapse rate). For dry air, this value is 1...

Ice forms on the surface of highways in a very thin layer that is difficult to distinguish from the color of the asphalt...