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

Particles such as pollen, grass seeds, or dust in the air that cause allergies and are transported by winds.

A sudden electrostatic discharge during a thunderstorm between electrically charged regions of a cloud, between clouds, or...

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

A thin, white cloud layer that is intertwined or separate, arranged in regular order, and does not cast a shadow.

A cold core high is a high-pressure system with cold air at its center. These systems are typically associated with clear...

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

The horizontal transport of any feature within the atmosphere due to the movement of air (wind). This includes phenomena...

Air laden with sand and dust, common in areas devoid of permanent vegetation, especially deserts.

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

Nor'easter is a meteorological event commonly observed in the Northeastern United States and typically occurs during the...