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

A prefix used in cloud nomenclature to describe middle-altitude clouds that form between 6,500 and 20,000 feet, such as altostratus...

Meteorology is the scientific study of the atmosphere and weather processes. It involves observing, analyzing, and forecasting...

The upward movement of air caused by a topographic barrier, such as a mountain, which can lead to cloud formation and precipitation.

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

A thick cloud of tiny water droplets suspended in the atmosphere near the Earth's surface, significantly reducing visibility.

Frozen drizzle is a dangerous type of frozen rain. It’s a light rain that falls in very fine drops, which freezes on contact...

The percentage of water vapor in the air relative to the maximum amount of water vapor the air can hold at a given temperature.

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 cold front is the leading edge of a cold air mass that replaces a warmer air mass. It is typically associated with sudden...

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