Weather Dictionary / Glossary of Terms

Low Pressure System


   Weather TermDescription / Definition
   Low Pressure System An area of a relative pressure minimum that has converging winds and rotates in the same direction as the earth. This is counterclockwise in the Northern Hemisphere and clockwise in the Southern Hemisphere. Also known as an cyclone, it is the opposite of an area of high pressure, or a anticyclone.


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Data courtesy of NOAA - National Oceanic and Atmospheric Administration