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

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

A weather system refers to the movement of warm and cold air across the globe, usually in a recurring pattern. Systems can...

A periodic cooling of sea surface temperatures in the central and eastern Pacific Ocean, often leading to altered global...

Local winds that blow from slopes to peaks as a result of the heating of the top slopes without being affected by general...

A towering cloud that often reaches great altitudes and is associated with thunderstorms, heavy rain, and sometimes severe...

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

Conduction is the transfer of heat or electricity through a material without the material itself moving. This occurs when...

Anticyclones are areas of high atmospheric pressure that bring hot, dry weather in the summer and cold fronts in the winter.

An instrument for measuring atmospheric pressure.

Confluence refers to the area where two or more air streams or bodies of water meet and combine. In meteorology, it often...