Dark blue cloudy sky

What is Polar Vortex?

A polar vortex is a circulating mass of air in the atmosphere, typically found in polar regions. This rotating air mass occurs in both the stratosphere and troposphere at high latitudes, close to the poles. It is formed by the rotation of cold, dense air.

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Glossary

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

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The names given to the winds blowing from the four cardinal directions (north, east, south, and west - N, E, S, W) on a compass.

The formation of fog when warm and moist air passes over a cool or cold surface or, conversely, when cold air passes over...

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

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