Dark blue cloudy sky

What is Low Pressure System?

A low-pressure area with converging winds, rotating counterclockwise in the Northern Hemisphere and clockwise in the Southern Hemisphere. Also known as a cyclone. It is the opposite of high pressure (anticyclone).

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Glossary

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

Nimbostratus clouds are thick, dark, gray clouds associated with rainy and gloomy days that block the Sun. These clouds,...

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

Condensation pressure deficit refers to the difference between the actual vapor pressure and the saturation vapor pressure...

An elongated area of relatively low atmospheric pressure, often associated with unsettled weather conditions like storms...

Cloud condensation nuclei are tiny particles in the atmosphere, such as dust, salt, or pollutants, that provide surfaces...

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

A weather warning means that a weather hazard is occurring, imminent, or likely. In other words, severe weather is happening...

A thermodynamic change process in the system without any exchange of heat or transfer of energy between systems. This process...

A long, narrow region in the atmosphere that transport water vapor, like a river in the sky.