What is a low -pressure system?

This capital "L" on the weather means a low -pressure system and usually means that it is cloudy or stormy weather. This type of system is the weather area in which barometric pressure is lower than the ambient air.

When the barometric pressure is reduced and creates a low -pressure system, it brings air, usually from the cold front to the north. Circulation anti -clockwise brings air and as the chilled air rises, forms clouds and precipitation. The system is based on the interaction between the atmosphere and large water formations.

This type of system generally comes in conjunction with or as a crossroads for the front or area of ​​significantly warmer or colder air. The air near the system often becomes unstable and, if other conditions are favorable, serious weather may result from low pressure and passage of the cold front.

Tornadoes, in fact, they always have low air pressure in their travels. A strong low -pressure system in winter can bring snow and ice to the areas it covers. TheThis type of weather system is often considered to be a comma -shaped cloud mass on satellite photography due to a cyclonic cloud flow. A tight, well -defined comma usually denotes a well -organized storm system.

When low pressure is built on warm water, it can begin to organize and can form a tropical wave that can turn into a hurricane. Hurricane usually has an extremely low barometric pressure and the lower the pressure, the more intense the storm. When the hurricane moves inland, it actually loses its tropical properties and ends up as a wet, windy low -pressure system.

Meteorologists use computer programs specially designed to map weather systems to help them predict the weather. One of the functions of these programs is to estimate how low pressure moves throughout the country and what kind of urgent it can bring. Even a one -day announcement of bad weathercan help save lives and property.