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 strong wind typically ranging from 34 to 40 knots (39 to 46 miles per hour) and often associated with rough seas and stormy...

A cold core low is a low-pressure system where the coldest temperatures are found near the center. These systems are often...

A cloud that develops from Cirrus, completely or partially covering the sky, creating a halo effect, thin, sheet-like, milky...

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

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

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

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

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

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

A distinct layer in a body of water where the temperature changes rapidly with depth, separating warmer surface water from...