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 term used to identify clouds with a base height below 6,000 feet in the observer's direction. Stratiform clouds consist...

The situation where there is no advection because the constant pressure surfaces and temperature surfaces in the atmosphere...

An instrument that continuously records atmospheric pressure over time. It uses a barometer to measure pressure and creates...

A line on a weather map connecting points of equal atmospheric pressure, used to identify high and low-pressure systems.

An instrument used to measure the speed, force, and sometimes the direction of the wind. It can be cup or pressure tube anemometers....

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

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

Any form of water - liquid or solid - that falls from the atmosphere to the Earth's surface, including rain, snow, sleet,...

A middle cloud type within the B family in the international cloud classification. These are shaded clouds that can be white...

A small, intense downdraft that produces damaging winds at the surface, typically lasting a few minutes and often associated...