Dark blue cloudy sky

What is Mesocyclone?

In a severe storm, with a swirling motion in its left rear quadrant, a vertically rotating column of air, often seen with a funnel cloud or tornado cloud beneath it and detectable on Doppler radar.

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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.

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A term used to identify clouds with a base height below 6,000 feet in the observer's direction. Stratiform clouds consist...

The situation where there is no advection because the constant pressure surfaces and temperature surfaces in the atmosphere...

A cold front is the leading edge of a cold air mass that replaces a warmer air mass. It is typically associated with sudden...

Local winds that blow from slopes to peaks as a result of the heating of the top slopes without being affected by general...

A distinct layer in a body of water where the temperature changes rapidly with depth, separating warmer surface water from...

Particles such as pollen, grass seeds, or dust in the air that cause allergies and are transported by winds.