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

An instrument used to measure the speed, force, and sometimes the direction of the wind. It can be cup or pressure tube anemometers....

The amount of water vapor present in the air, which can affect comfort levels and weather conditions.

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

In a severe storm, with a swirling motion in its left rear quadrant, a vertically rotating column of air, often seen with...

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

A fixed potential temperature line on adiabats, or the process of thermodynamic changes within a system without any exchange...

A large body of air having similar horizontal temperature and moisture characteristics.

A weather warning means that a weather hazard is occurring, imminent, or likely. In other words, severe weather is happening...

A thermodynamic change process in the system without any exchange of heat or transfer of energy between systems. This process...

A body that has the property of absorbing all electromagnetic radiation falling on it, and therefore is the theoretical body...