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 cloud of irregular appearance, composed of irregular cloud fragments.

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

A strong, downward wind caused by a localized column of air sinking rapidly, often resulting in damage similar to that caused...

Thermodynamic changes occurring within a system without any exchange of heat with the surroundings. In the atmosphere, changes...

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

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

A tropical cyclone, also called a hurricane, is a severe tropical storm with wind speeds in excess of 74 mph. Known as a...

A polar vortex is a circulating mass of air in the atmosphere, typically found in polar regions. This rotating air mass occurs...

A line of severe thunderstorms that can form along or ahead of a cold front, often producing strong winds and heavy rain.

The temperature at which air becomes saturated with moisture and water vapor begins to condense into liquid form, leading...