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 bomb cyclone is a large mid-latitude storm that forms when a storm’s central pressure drops (i.e. “bombs out”), resulting...

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

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

A tropical cyclone with sustained winds of at least 74 miles per hour, characterized by a central eye, strong winds, and...

The amount of radiation, heat, or light passing through or flowing from a unit area of a surface.

The term 'cloudy' refers to weather conditions characterized by a significant amount of cloud cover in the sky. This may...

Indicates the amount of water the soil can absorb/retain through percolation. This capacity is around 7% in sandy soil and...

Conduction is the transfer of heat or electricity through a material without the material itself moving. This occurs when...

The expected rate of temperature decrease in an adiabatically rising air parcel when there is no heat exchange with the environment....

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