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

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

A mass of very cold, dry air that mostly originates over the Arctic Ocean.

Occurs when centers of high pressure and/or low pressure set up over a region in such a way that they prevent other weather...

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

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

A strong wind typically ranging from 34 to 40 knots (39 to 46 miles per hour) and often associated with rough seas and stormy...

Precipitation in the form of small balls or lumps of ice that form in thunderstorm updrafts and fall to the ground.

Meteorology is the scientific study of the atmosphere and weather processes. It involves observing, analyzing, and forecasting...

A closed low, also known as a cut-off low, is a low-pressure system that is entirely isolated from the main atmospheric circulation...

Convection is the vertical movement of air caused by temperature differences, where warm air rises and cool air sinks. It...