Dark blue cloudy sky

What is Arctic Air?

A mass of very cold, dry air that mostly originates over the Arctic Ocean.

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Glossary

A weather front where two air masses meet but neither is strong enough to move the other, often resulting in prolonged periods...

A rapidly rotating column of air extending from a thunderstorm to the ground, capable of causing significant damage.

Confluence refers to the area where two or more air streams or bodies of water meet and combine. In meteorology, it often...

A towering cloud that often reaches great altitudes and is associated with thunderstorms, heavy rain, and sometimes severe...

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

Nimbostratus clouds are thick, dark, gray clouds associated with rainy and gloomy days that block the Sun. These clouds,...

A cold core high is a high-pressure system with cold air at its center. These systems are typically associated with clear...

A line on a weather map connecting points of equal atmospheric pressure, used to identify high and low-pressure systems.

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

The scientific study of climate, focusing on the analysis of long-term weather patterns and trends over time.