Dark blue cloudy sky

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

The process by which a solid changes directly into a gas without first becoming a liquid, such as ice turning into water...

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

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

The measure of the water vapor or moisture content in the air, expressed as the mass of water vapor per unit volume of air....

A bomb cyclone is a large mid-latitude storm that forms when a storm’s central pressure drops (i.e. “bombs out”), resulting...

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

An anvil is a cloud mostly composed of ice particles. Otherwise known as a cumulonimbus cloud, an anvil has reached the stratospheric...

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

A fixed potential temperature line on adiabats, or the process of thermodynamic changes within a system without any exchange...

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