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 tropical cyclone, also called a hurricane, is a severe tropical storm with wind speeds in excess of 74 mph. Known as a...

The mass of air surrounding the earth and bound to it more or less permanently by the earth's gravitational attraction.

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

The situation where there is no advection because the constant pressure surfaces and temperature surfaces in the atmosphere...

A line of severe thunderstorms that can form along or ahead of a cold front, often producing strong winds and heavy rain.

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

Nor'easter is a meteorological event commonly observed in the Northeastern United States and typically occurs during the...

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

Condensation is the process by which water vapor in the air cools and changes into liquid water. This process is crucial...