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 term used to identify clouds with a base height below 6,000 feet in the observer's direction. Stratiform clouds consist...

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

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

Jet streams are strong, fast-flowing air currents in the upper levels of the atmosphere. They form when warm air masses meet...

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

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

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

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

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

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