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

A weather warning means that a weather hazard is occurring, imminent, or likely. In other words, severe weather is happening...

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

Jet streams are strong, fast-flowing air currents in the upper levels of the atmosphere. They form when warm air masses meet...

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

The trapping of heat in the Earth's atmosphere due to greenhouse gases, such as carbon dioxide and methane, which allows...

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

Any form of water - liquid or solid - that falls from the atmosphere to the Earth's surface, including rain, snow, sleet,...

A type of cloud consisting mostly of small particles such as ice particles.

The upward movement of air caused by a topographic barrier, such as a mountain, which can lead to cloud formation and precipitation.