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TeachMeFinance.com - explain low or low-pressure system low or low-pressure system The term 'low or low-pressure system' as it applies to the area of Earth observation can be defined as ' A horizontal area where the atmospheric pressure is less than it is in adjacent areas. Since air always moves from areas of high pressure to areas of low pressure, air from these adjacent areas of higher pressure will move toward the low pressure area to equalize the pressure. This inflow of air toward the low will be affected by the Earth's rotation (see Coriolis force) and will cause the air to spiral inward in a counterclockwise direction in the northern hemisphere. The air eventually rises near the center of the low, causing cloudiness and precipitation'. Previous 5 Terms: Low Frequency Low hazard Low head Low Income Home Energy Assistance Program (LIHEAP) Low Level Jet Next 5 Terms: Low population zone (LPZ) low power fm radio (lpfm) low power television (lptv) Low power testing Low Pressure System About the author Mark McCracken Author: Mark McCracken is a corporate trainer and author living in Higashi Osaka, Japan. He is the author of thousands of online articles as well as the Business English textbook, "25 Business Skills in English". Copyright © 2005-2011 by Mark McCracken, All Rights Reserved. TeachMeFinance.com is an informational website, and should not be used as a substitute for professional medical, legal or financial advice. Information presented at TeachMeFinance.com is provided on an "AS-IS" basis. Please read the disclaimer for details.