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

A thin, white cloud layer that is intertwined or separate, arranged in regular order, and does not cast a shadow.

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

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

A weather system refers to the movement of warm and cold air across the globe, usually in a recurring pattern. Systems can...

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

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

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

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

Ball lightning appears during thunderstorms, taking the shape of glowing, electric orbs in the sky. It can appear in a variety...

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