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

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

The state of the atmosphere when it contains the maximum amount of water vapor possible at a given temperature and pressure.

The decrease in temperature with height in an adiabatically rising air parcel (lapse rate). For dry air, this value is 1...

A measurement determined by the wave lengths and sea conditions caused by the effect of wind, and by the movement of tree...

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

Frozen drizzle is a dangerous type of frozen rain. It’s a light rain that falls in very fine drops, which freezes on contact...

Meteorology is the scientific study of the atmosphere and weather processes. It involves observing, analyzing, and forecasting...

A tropical cyclone, also called a hurricane, is a severe tropical storm with wind speeds in excess of 74 mph. Known as a...

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

Condensation pressure deficit refers to the difference between the actual vapor pressure and the saturation vapor pressure...