Dark blue cloudy sky

What is Downburst?

A strong, downward wind caused by a localized column of air sinking rapidly, often resulting in damage similar to that caused by a tornado.

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Glossary

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

The term used for semi-stationary high-pressure centers such as the Azores and North Pacific Highs, which occur in the narrow...

A polar vortex is a circulating mass of air in the atmosphere, typically found in polar regions. This rotating air mass occurs...

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

Ice forms on the surface of highways in a very thin layer that is difficult to distinguish from the color of the asphalt...

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

Weather conditions are the components that comprise the state of the atmosphere. The six main weather conditions are temperature,...

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

The mass of air surrounding the earth and bound to it more or less permanently by the earth's gravitational attraction.