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

The large-scale movement of air that distributes heat and moisture around the Earth, influencing weather patterns and climatic...

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

A middle cloud type within the B family in the international cloud classification. These are shaded clouds that can be white...

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

A measure of how hot it feels when relative humidity is combined with the actual air temperature, often referred to as the...

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

The horizontal transport of any feature within the atmosphere due to the movement of air (wind). This includes phenomena...

A tropical cyclone with sustained winds of at least 74 miles per hour, characterized by a central eye, strong winds, and...

Snow that rises to 8 feet or higher.

A blizzard is a storm that lasts 3 hours or more, with persistent winds/frequent gusts of 35 mph or more along with significant...