Dark blue cloudy sky

What is Squall Line?

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

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Glossary

Ball lightning appears during thunderstorms, taking the shape of glowing, electric orbs in the sky. It can appear in a variety...

A low-pressure area with converging winds, rotating counterclockwise in the Northern Hemisphere and clockwise in the Southern...

The measure of the water vapor or moisture content in the air, expressed as the mass of water vapor per unit volume of air....

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

A closed low, also known as a cut-off low, is a low-pressure system that is entirely isolated from the main atmospheric circulation...

Bright and dark rays with changing colors and contrast in the sky. These rays become visible due to the reflection of atmospheric...

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

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

An instrument for measuring atmospheric pressure.

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