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

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

The lowest level of a given cloud or cloud layer in the atmosphere, relative to the observer's position above the ground.

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

Thermodynamic changes occurring within a system without any exchange of heat with the surroundings. In the atmosphere, changes...

A mass of very cold, dry air that mostly originates over the Arctic Ocean.

An instrument for measuring atmospheric pressure.

Temperature scale, abbreviated as °C, found by accepting the freezing point of water at one atmospheric pressure as zero...

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

A weather watch means there is a risk of weather hazards in the near future, which could pose a threat to life/property....

A thin, white cloud layer that is intertwined or separate, arranged in regular order, and does not cast a shadow.