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 scientific study of climate, focusing on the analysis of long-term weather patterns and trends over time.

A scale for estimating wind speed based on observed conditions of the sea or land. It ranges from 0 (calm) to 12 (hurricane)...

The heating of the Earth by the sun causes daily changes in both the direction and speed of the wind. During the day, ground...

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

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

A very cold high pressure that originates over the Arctic Ocean.

A tropical cyclone with sustained winds of at least 74 miles per hour, characterized by a central eye, strong winds, and...

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

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

Large, fluffy white clouds with flat bases, typically indicating fair weather, though they can develop into storm clouds...