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 temperature at which air becomes saturated with moisture and water vapor begins to condense into liquid form, leading...

A cloud of irregular appearance, composed of irregular cloud fragments.

Anticyclones are areas of high atmospheric pressure that bring hot, dry weather in the summer and cold fronts in the winter.

A cold core low is a low-pressure system where the coldest temperatures are found near the center. These systems are often...

A weather front formed when a cold front overtakes a warm front, lifting the warm air off the ground and resulting in a mix...

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...

A long, narrow region in the atmosphere that transport water vapor, like a river in the sky.

A deviation from the normal or expected value in atmospheric or climatic conditions, often used in meteorology to identify...

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