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

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

A low-pressure area with converging winds, rotating counterclockwise in the Northern Hemisphere and clockwise in the Southern...

The measure of the water vapor or moisture content in the air, expressed as the mass of water vapor per unit volume of air....

Temperature scale, abbreviated as °C, found by accepting the freezing point of water at one atmospheric pressure as zero...

A bomb cyclone is a large mid-latitude storm that forms when a storm’s central pressure drops (i.e. “bombs out”), resulting...

A line of severe thunderstorms that can form along or ahead of a cold front, often producing strong winds and heavy rain.

The jet stream forming the boundary between tropical air and sub-tropical air, characterized by isothermal compression and...

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

Observation of the sky from the observer's location where there are no clouds, and there is no obstruction to visibility....

Considerable cloudiness refers to weather conditions where a large portion of the sky is covered with clouds, but some clear...