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

Cloud condensation nuclei are tiny particles in the atmosphere, such as dust, salt, or pollutants, that provide surfaces...

A sudden electrostatic discharge during a thunderstorm between electrically charged regions of a cloud, between clouds, or...

Nor'easter is a meteorological event commonly observed in the Northeastern United States and typically occurs during the...

A line on a weather map connecting points of equal atmospheric pressure, used to identify high and low-pressure systems.

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

Anticyclones are areas of high atmospheric pressure that bring hot, dry weather in the summer and cold fronts in the winter.

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

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

A middle cloud type within the B family in the international cloud classification. These clouds consist of water droplets...

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