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What is Trough?

An elongated area of relatively low atmospheric pressure, often associated with unsettled weather conditions like storms and rain.

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Glossary

A sudden and rapid flow of snow masses accumulated on the slopes of mountainous areas under the influence of gravity or a...

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 branch of science dealing with the laws of motion of air or other gases.

A prefix used in cloud nomenclature to describe middle-altitude clouds that form between 6,500 and 20,000 feet, such as altostratus...

Cloud or rain droplets containing pollutants, such as oxides of sulfur and nitrogen, to make them acidic.

CONQ is a meteorological abbreviation for significant convection observed in a specific area, often indicating unstable atmospheric...

Indicates the amount of water the soil can absorb/retain through percolation. This capacity is around 7% in sandy soil and...

An instrument that continuously records atmospheric pressure over time. It uses a barometer to measure pressure and creates...

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